./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec5_product37.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d0a0e-4273-4a77-8933-96bedf698b69/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d0a0e-4273-4a77-8933-96bedf698b69/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d0a0e-4273-4a77-8933-96bedf698b69/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d0a0e-4273-4a77-8933-96bedf698b69/bin/uautomizer-tBqnrhUYjU/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec5_product37.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d0a0e-4273-4a77-8933-96bedf698b69/bin/uautomizer-tBqnrhUYjU/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d0a0e-4273-4a77-8933-96bedf698b69/bin/uautomizer-tBqnrhUYjU --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3ab30b3db91b0e47e6f9b2ed9ba465facc49148e5cdc1cad78e4808ba0c7de84 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:36:36,486 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:36:36,488 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:36:36,527 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:36:36,528 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:36:36,529 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:36:36,531 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:36:36,534 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:36:36,536 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:36:36,537 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:36:36,539 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:36:36,540 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:36:36,541 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:36:36,542 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:36:36,544 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:36:36,545 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:36:36,547 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:36:36,548 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:36:36,551 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:36:36,554 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:36:36,556 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:36:36,557 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:36:36,559 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:36:36,560 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:36:36,564 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:36:36,565 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:36:36,565 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:36:36,566 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:36:36,567 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:36:36,568 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:36:36,569 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:36:36,570 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:36:36,571 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:36:36,572 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:36:36,573 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:36:36,573 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:36:36,574 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:36:36,575 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:36:36,575 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:36:36,576 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:36:36,577 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:36:36,579 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d0a0e-4273-4a77-8933-96bedf698b69/bin/uautomizer-tBqnrhUYjU/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-11-02 22:36:36,611 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:36:36,611 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:36:36,615 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:36:36,616 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:36:36,617 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:36:36,617 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:36:36,618 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:36:36,618 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-11-02 22:36:36,618 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-11-02 22:36:36,619 INFO L138 SettingsManager]: * Use old map elimination=false [2021-11-02 22:36:36,619 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-11-02 22:36:36,620 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-11-02 22:36:36,620 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-11-02 22:36:36,620 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:36:36,621 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 22:36:36,621 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-02 22:36:36,621 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:36:36,622 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 22:36:36,622 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:36:36,622 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-11-02 22:36:36,623 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-11-02 22:36:36,623 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-11-02 22:36:36,623 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 22:36:36,624 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 22:36:36,624 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-11-02 22:36:36,625 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:36:36,625 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-11-02 22:36:36,625 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:36:36,626 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:36:36,626 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:36:36,626 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 22:36:36,627 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:36:36,628 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-11-02 22:36:36,628 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_870d0a0e-4273-4a77-8933-96bedf698b69/bin/uautomizer-tBqnrhUYjU/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d0a0e-4273-4a77-8933-96bedf698b69/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3ab30b3db91b0e47e6f9b2ed9ba465facc49148e5cdc1cad78e4808ba0c7de84 [2021-11-02 22:36:36,857 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:36:36,881 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:36:36,884 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:36:36,885 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:36:36,886 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:36:36,887 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d0a0e-4273-4a77-8933-96bedf698b69/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/product-lines/minepump_spec5_product37.cil.c [2021-11-02 22:36:36,957 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d0a0e-4273-4a77-8933-96bedf698b69/bin/uautomizer-tBqnrhUYjU/data/5e29b2dc2/ea0330a4b54a4c72b412a146107b0ede/FLAG132f1ae60 [2021-11-02 22:36:37,470 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:36:37,471 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d0a0e-4273-4a77-8933-96bedf698b69/sv-benchmarks/c/product-lines/minepump_spec5_product37.cil.c [2021-11-02 22:36:37,492 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d0a0e-4273-4a77-8933-96bedf698b69/bin/uautomizer-tBqnrhUYjU/data/5e29b2dc2/ea0330a4b54a4c72b412a146107b0ede/FLAG132f1ae60 [2021-11-02 22:36:37,980 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d0a0e-4273-4a77-8933-96bedf698b69/bin/uautomizer-tBqnrhUYjU/data/5e29b2dc2/ea0330a4b54a4c72b412a146107b0ede [2021-11-02 22:36:37,985 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:36:37,987 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 22:36:37,989 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:36:37,990 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:36:37,993 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:36:37,994 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:36:37" (1/1) ... [2021-11-02 22:36:37,995 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66bda7ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:36:37, skipping insertion in model container [2021-11-02 22:36:37,996 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:36:37" (1/1) ... [2021-11-02 22:36:38,005 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:36:38,057 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:36:38,259 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_870d0a0e-4273-4a77-8933-96bedf698b69/sv-benchmarks/c/product-lines/minepump_spec5_product37.cil.c[5071,5084] [2021-11-02 22:36:38,351 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:36:38,372 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:36:38,417 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_870d0a0e-4273-4a77-8933-96bedf698b69/sv-benchmarks/c/product-lines/minepump_spec5_product37.cil.c[5071,5084] [2021-11-02 22:36:38,483 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:36:38,511 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:36:38,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:36:38 WrapperNode [2021-11-02 22:36:38,512 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:36:38,513 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 22:36:38,513 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 22:36:38,514 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 22:36:38,521 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:36:38" (1/1) ... [2021-11-02 22:36:38,548 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:36:38" (1/1) ... [2021-11-02 22:36:38,599 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 22:36:38,600 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:36:38,600 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:36:38,600 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:36:38,608 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:36:38" (1/1) ... [2021-11-02 22:36:38,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:36:38" (1/1) ... [2021-11-02 22:36:38,613 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:36:38" (1/1) ... [2021-11-02 22:36:38,627 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:36:38" (1/1) ... [2021-11-02 22:36:38,640 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:36:38" (1/1) ... [2021-11-02 22:36:38,648 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:36:38" (1/1) ... [2021-11-02 22:36:38,661 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:36:38" (1/1) ... [2021-11-02 22:36:38,665 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:36:38,666 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:36:38,666 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:36:38,666 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:36:38,674 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:36:38" (1/1) ... [2021-11-02 22:36:38,680 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:36:38,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d0a0e-4273-4a77-8933-96bedf698b69/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:36:38,701 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d0a0e-4273-4a77-8933-96bedf698b69/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-02 22:36:38,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d0a0e-4273-4a77-8933-96bedf698b69/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-11-02 22:36:38,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 22:36:38,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 22:36:38,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:36:38,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:36:39,666 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:36:39,671 INFO L299 CfgBuilder]: Removed 170 assume(true) statements. [2021-11-02 22:36:39,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:36:39 BoogieIcfgContainer [2021-11-02 22:36:39,674 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:36:39,677 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-11-02 22:36:39,678 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-11-02 22:36:39,686 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-11-02 22:36:39,687 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-02 22:36:39,687 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 02.11 10:36:37" (1/3) ... [2021-11-02 22:36:39,688 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@16f57714 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 02.11 10:36:39, skipping insertion in model container [2021-11-02 22:36:39,689 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-02 22:36:39,689 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:36:38" (2/3) ... [2021-11-02 22:36:39,690 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@16f57714 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 02.11 10:36:39, skipping insertion in model container [2021-11-02 22:36:39,690 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-02 22:36:39,691 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:36:39" (3/3) ... [2021-11-02 22:36:39,692 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec5_product37.cil.c [2021-11-02 22:36:39,745 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-11-02 22:36:39,745 INFO L360 BuchiCegarLoop]: Hoare is false [2021-11-02 22:36:39,745 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-11-02 22:36:39,745 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-11-02 22:36:39,745 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-11-02 22:36:39,745 INFO L364 BuchiCegarLoop]: Difference is false [2021-11-02 22:36:39,745 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-11-02 22:36:39,745 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-11-02 22:36:39,760 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 117 states, 116 states have (on average 1.5258620689655173) internal successors, (177), 116 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:36:39,785 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 75 [2021-11-02 22:36:39,785 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-02 22:36:39,785 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-02 22:36:39,792 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:36:39,793 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:36:39,793 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-11-02 22:36:39,794 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 117 states, 116 states have (on average 1.5258620689655173) internal successors, (177), 116 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:36:39,802 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 75 [2021-11-02 22:36:39,802 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-02 22:36:39,802 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-02 22:36:39,803 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:36:39,804 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:36:39,808 INFO L791 eck$LassoCheckResult]: Stem: 108#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(13);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(110, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 2 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string29.base, #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 2 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 3 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string31.base, #t~string31.offset, 1);call write~init~int(80, #t~string31.base, 1 + #t~string31.offset, 1);call write~init~int(117, #t~string31.base, 2 + #t~string31.offset, 1);call write~init~int(109, #t~string31.base, 3 + #t~string31.offset, 1);call write~init~int(112, #t~string31.base, 4 + #t~string31.offset, 1);call write~init~int(58, #t~string31.base, 5 + #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 6 + #t~string31.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string33.base, #t~string33.offset, 1);call write~init~int(110, #t~string33.base, 1 + #t~string33.offset, 1);call write~init~int(0, #t~string33.base, 2 + #t~string33.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string35.base, #t~string35.offset, 1);call write~init~int(102, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(102, #t~string35.base, 2 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 3 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string37.base, #t~string37.offset, 1);call write~init~int(32, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 2 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string39.base, #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 1 + #t~string39.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(21);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(21);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(30);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(9);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(25);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(30);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(9);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~switchedOnBeforeTS~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 34#L-1true havoc main_#res;havoc main_#t~ret20, main_~retValue_acc~3, main_~tmp~1;havoc main_~retValue_acc~3;havoc main_~tmp~1; 57#L584true havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 18#L592true main_#t~ret20 := valid_product_#res;main_~tmp~1 := main_#t~ret20;havoc main_#t~ret20; 78#L291true assume 0 != main_~tmp~1; 112#L263true ~switchedOnBeforeTS~0 := 0; 75#L159true havoc test_#t~nondet41, test_#t~nondet42, test_#t~nondet43, test_#t~nondet44, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 88#L180-1true [2021-11-02 22:36:39,809 INFO L793 eck$LassoCheckResult]: Loop: 88#L180-1true assume !false; 29#L508true assume test_~splverifierCounter~0 < 4; 44#L509true test_~tmp~5 := test_#t~nondet41;havoc test_#t~nondet41; 84#L517true assume !(0 != test_~tmp~5); 23#L517-1true test_~tmp___0~2 := test_#t~nondet42;havoc test_#t~nondet42; 89#L527true assume !(0 != test_~tmp___0~2); 96#L527-1true test_~tmp___2~0 := test_#t~nondet43;havoc test_#t~nondet43; 85#L537true assume 0 != test_~tmp___2~0; 113#L543-2true havoc __utac_acc__Specification5_spec__2_#t~ret17;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~5;havoc isPumpRunning_~retValue_acc~5;isPumpRunning_~retValue_acc~5 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~5; 7#L437true __utac_acc__Specification5_spec__2_#t~ret17 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret17;havoc __utac_acc__Specification5_spec__2_#t~ret17; 62#L169true assume !(0 != ~pumpRunning~0); 26#L326true assume !(0 != ~systemActive~0); 64#L333true havoc __utac_acc__Specification5_spec__3_#t~ret18, __utac_acc__Specification5_spec__3_#t~ret19, __utac_acc__Specification5_spec__3_~tmp~0, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~0;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 110#L132true __utac_acc__Specification5_spec__3_#t~ret18 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~0 := __utac_acc__Specification5_spec__3_#t~ret18;havoc __utac_acc__Specification5_spec__3_#t~ret18; 5#L180true assume !(2 != __utac_acc__Specification5_spec__3_~tmp~0); 88#L180-1true [2021-11-02 22:36:39,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:36:39,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-11-02 22:36:39,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:36:39,823 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500465053] [2021-11-02 22:36:39,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:36:39,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:36:40,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:36:40,068 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 22:36:40,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:36:40,252 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-02 22:36:40,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:36:40,255 INFO L85 PathProgramCache]: Analyzing trace with hash 95890028, now seen corresponding path program 1 times [2021-11-02 22:36:40,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:36:40,256 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254568846] [2021-11-02 22:36:40,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:36:40,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:36:40,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:36:40,263 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 22:36:40,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:36:40,281 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-02 22:36:40,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:36:40,282 INFO L85 PathProgramCache]: Analyzing trace with hash 2029915238, now seen corresponding path program 1 times [2021-11-02 22:36:40,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:36:40,283 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715857456] [2021-11-02 22:36:40,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:36:40,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:36:40,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:36:40,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:36:40,424 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:36:40,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715857456] [2021-11-02 22:36:40,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715857456] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:36:40,426 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:36:40,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 22:36:40,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122214338] [2021-11-02 22:36:40,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:36:40,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:36:40,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:36:40,575 INFO L87 Difference]: Start difference. First operand has 117 states, 116 states have (on average 1.5258620689655173) internal successors, (177), 116 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) 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) [2021-11-02 22:36:40,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:36:40,884 INFO L93 Difference]: Finished difference Result 117 states and 166 transitions. [2021-11-02 22:36:40,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:36:40,886 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 117 states and 166 transitions. [2021-11-02 22:36:40,891 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 73 [2021-11-02 22:36:40,897 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 117 states to 110 states and 159 transitions. [2021-11-02 22:36:40,898 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 110 [2021-11-02 22:36:40,899 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 110 [2021-11-02 22:36:40,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 110 states and 159 transitions. [2021-11-02 22:36:40,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:36:40,900 INFO L681 BuchiCegarLoop]: Abstraction has 110 states and 159 transitions. [2021-11-02 22:36:40,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states and 159 transitions. [2021-11-02 22:36:40,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2021-11-02 22:36:40,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 110 states have (on average 1.4454545454545455) internal successors, (159), 109 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:36:40,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 159 transitions. [2021-11-02 22:36:40,933 INFO L704 BuchiCegarLoop]: Abstraction has 110 states and 159 transitions. [2021-11-02 22:36:40,933 INFO L587 BuchiCegarLoop]: Abstraction has 110 states and 159 transitions. [2021-11-02 22:36:40,933 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-11-02 22:36:40,933 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 110 states and 159 transitions. [2021-11-02 22:36:40,936 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 73 [2021-11-02 22:36:40,936 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-02 22:36:40,936 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-02 22:36:40,937 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:36:40,937 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:36:40,937 INFO L791 eck$LassoCheckResult]: Stem: 361#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(13);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(110, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 2 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string29.base, #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 2 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 3 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string31.base, #t~string31.offset, 1);call write~init~int(80, #t~string31.base, 1 + #t~string31.offset, 1);call write~init~int(117, #t~string31.base, 2 + #t~string31.offset, 1);call write~init~int(109, #t~string31.base, 3 + #t~string31.offset, 1);call write~init~int(112, #t~string31.base, 4 + #t~string31.offset, 1);call write~init~int(58, #t~string31.base, 5 + #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 6 + #t~string31.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string33.base, #t~string33.offset, 1);call write~init~int(110, #t~string33.base, 1 + #t~string33.offset, 1);call write~init~int(0, #t~string33.base, 2 + #t~string33.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string35.base, #t~string35.offset, 1);call write~init~int(102, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(102, #t~string35.base, 2 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 3 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string37.base, #t~string37.offset, 1);call write~init~int(32, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 2 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string39.base, #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 1 + #t~string39.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(21);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(21);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(30);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(9);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(25);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(30);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(9);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~switchedOnBeforeTS~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 307#L-1 havoc main_#res;havoc main_#t~ret20, main_~retValue_acc~3, main_~tmp~1;havoc main_~retValue_acc~3;havoc main_~tmp~1; 308#L584 havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 283#L592 main_#t~ret20 := valid_product_#res;main_~tmp~1 := main_#t~ret20;havoc main_#t~ret20; 284#L291 assume 0 != main_~tmp~1; 349#L263 ~switchedOnBeforeTS~0 := 0; 348#L159 havoc test_#t~nondet41, test_#t~nondet42, test_#t~nondet43, test_#t~nondet44, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 256#L180-1 [2021-11-02 22:36:40,938 INFO L793 eck$LassoCheckResult]: Loop: 256#L180-1 assume !false; 301#L508 assume test_~splverifierCounter~0 < 4; 302#L509 test_~tmp~5 := test_#t~nondet41;havoc test_#t~nondet41; 320#L517 assume !(0 != test_~tmp~5); 289#L517-1 test_~tmp___0~2 := test_#t~nondet42;havoc test_#t~nondet42; 290#L527 assume !(0 != test_~tmp___0~2); 333#L527-1 test_~tmp___2~0 := test_#t~nondet43;havoc test_#t~nondet43; 352#L537 assume 0 != test_~tmp___2~0; 323#L543-2 havoc __utac_acc__Specification5_spec__2_#t~ret17;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~5;havoc isPumpRunning_~retValue_acc~5;isPumpRunning_~retValue_acc~5 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~5; 259#L437 __utac_acc__Specification5_spec__2_#t~ret17 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret17;havoc __utac_acc__Specification5_spec__2_#t~ret17; 260#L169 assume !(0 != ~pumpRunning~0); 258#L326 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret22, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 296#L384 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret21, processEnvironment__wrappee__highWaterSensor_~tmp~2;havoc processEnvironment__wrappee__highWaterSensor_~tmp~2; 326#L358-1 assume !(0 == ~pumpRunning~0); 275#L333 havoc __utac_acc__Specification5_spec__3_#t~ret18, __utac_acc__Specification5_spec__3_#t~ret19, __utac_acc__Specification5_spec__3_~tmp~0, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~0;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 339#L132 __utac_acc__Specification5_spec__3_#t~ret18 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~0 := __utac_acc__Specification5_spec__3_#t~ret18;havoc __utac_acc__Specification5_spec__3_#t~ret18; 254#L180 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~0); 256#L180-1 [2021-11-02 22:36:40,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:36:40,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-11-02 22:36:40,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:36:40,939 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893439984] [2021-11-02 22:36:40,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:36:40,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:36:40,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:36:40,989 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 22:36:41,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:36:41,089 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-02 22:36:41,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:36:41,096 INFO L85 PathProgramCache]: Analyzing trace with hash -484283837, now seen corresponding path program 1 times [2021-11-02 22:36:41,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:36:41,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470859958] [2021-11-02 22:36:41,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:36:41,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:36:41,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:36:41,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:36:41,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:36:41,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470859958] [2021-11-02 22:36:41,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470859958] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:36:41,140 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:36:41,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:36:41,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438870463] [2021-11-02 22:36:41,141 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-02 22:36:41,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:36:41,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:36:41,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:36:41,142 INFO L87 Difference]: Start difference. First operand 110 states and 159 transitions. cyclomatic complexity: 51 Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:36:41,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:36:41,246 INFO L93 Difference]: Finished difference Result 159 states and 218 transitions. [2021-11-02 22:36:41,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:36:41,247 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 159 states and 218 transitions. [2021-11-02 22:36:41,257 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 110 [2021-11-02 22:36:41,264 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 159 states to 159 states and 218 transitions. [2021-11-02 22:36:41,264 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 159 [2021-11-02 22:36:41,266 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 159 [2021-11-02 22:36:41,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 159 states and 218 transitions. [2021-11-02 22:36:41,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:36:41,269 INFO L681 BuchiCegarLoop]: Abstraction has 159 states and 218 transitions. [2021-11-02 22:36:41,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states and 218 transitions. [2021-11-02 22:36:41,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2021-11-02 22:36:41,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 159 states have (on average 1.371069182389937) internal successors, (218), 158 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:36:41,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 218 transitions. [2021-11-02 22:36:41,282 INFO L704 BuchiCegarLoop]: Abstraction has 159 states and 218 transitions. [2021-11-02 22:36:41,283 INFO L587 BuchiCegarLoop]: Abstraction has 159 states and 218 transitions. [2021-11-02 22:36:41,283 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-11-02 22:36:41,283 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 159 states and 218 transitions. [2021-11-02 22:36:41,285 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 110 [2021-11-02 22:36:41,285 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-02 22:36:41,285 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-02 22:36:41,288 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:36:41,288 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] [2021-11-02 22:36:41,288 INFO L791 eck$LassoCheckResult]: Stem: 642#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(13);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(110, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 2 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string29.base, #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 2 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 3 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string31.base, #t~string31.offset, 1);call write~init~int(80, #t~string31.base, 1 + #t~string31.offset, 1);call write~init~int(117, #t~string31.base, 2 + #t~string31.offset, 1);call write~init~int(109, #t~string31.base, 3 + #t~string31.offset, 1);call write~init~int(112, #t~string31.base, 4 + #t~string31.offset, 1);call write~init~int(58, #t~string31.base, 5 + #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 6 + #t~string31.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string33.base, #t~string33.offset, 1);call write~init~int(110, #t~string33.base, 1 + #t~string33.offset, 1);call write~init~int(0, #t~string33.base, 2 + #t~string33.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string35.base, #t~string35.offset, 1);call write~init~int(102, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(102, #t~string35.base, 2 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 3 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string37.base, #t~string37.offset, 1);call write~init~int(32, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 2 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string39.base, #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 1 + #t~string39.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(21);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(21);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(30);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(9);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(25);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(30);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(9);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~switchedOnBeforeTS~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 584#L-1 havoc main_#res;havoc main_#t~ret20, main_~retValue_acc~3, main_~tmp~1;havoc main_~retValue_acc~3;havoc main_~tmp~1; 585#L584 havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 558#L592 main_#t~ret20 := valid_product_#res;main_~tmp~1 := main_#t~ret20;havoc main_#t~ret20; 559#L291 assume 0 != main_~tmp~1; 627#L263 ~switchedOnBeforeTS~0 := 0; 626#L159 havoc test_#t~nondet41, test_#t~nondet42, test_#t~nondet43, test_#t~nondet44, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 531#L180-1 [2021-11-02 22:36:41,288 INFO L793 eck$LassoCheckResult]: Loop: 531#L180-1 assume !false; 577#L508 assume test_~splverifierCounter~0 < 4; 578#L509 test_~tmp~5 := test_#t~nondet41;havoc test_#t~nondet41; 598#L517 assume !(0 != test_~tmp~5); 565#L517-1 test_~tmp___0~2 := test_#t~nondet42;havoc test_#t~nondet42; 566#L527 assume !(0 != test_~tmp___0~2); 610#L527-1 test_~tmp___2~0 := test_#t~nondet43;havoc test_#t~nondet43; 630#L537 assume 0 != test_~tmp___2~0; 601#L543-2 havoc __utac_acc__Specification5_spec__2_#t~ret17;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~5;havoc isPumpRunning_~retValue_acc~5;isPumpRunning_~retValue_acc~5 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~5; 534#L437 __utac_acc__Specification5_spec__2_#t~ret17 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret17;havoc __utac_acc__Specification5_spec__2_#t~ret17; 535#L169 assume !(0 != ~pumpRunning~0); 572#L326 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret22, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 573#L384 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret21, processEnvironment__wrappee__highWaterSensor_~tmp~2;havoc processEnvironment__wrappee__highWaterSensor_~tmp~2; 604#L358-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret40, isHighWaterLevel_~retValue_acc~6, isHighWaterLevel_~tmp~4, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~6;havoc isHighWaterLevel_~tmp~4;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~2;havoc isHighWaterSensorDry_~retValue_acc~2; 595#L140-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 596#L145-1 isHighWaterLevel_#t~ret40 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~4 := isHighWaterLevel_#t~ret40;havoc isHighWaterLevel_#t~ret40; 618#L486-3 assume 0 != isHighWaterLevel_~tmp~4;isHighWaterLevel_~tmp___0~1 := 0; 621#L486-5 isHighWaterLevel_~retValue_acc~6 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~6; 628#L492-1 processEnvironment__wrappee__highWaterSensor_#t~ret21 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~2 := processEnvironment__wrappee__highWaterSensor_#t~ret21;havoc processEnvironment__wrappee__highWaterSensor_#t~ret21; 571#L362-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~2); 564#L333 havoc __utac_acc__Specification5_spec__3_#t~ret18, __utac_acc__Specification5_spec__3_#t~ret19, __utac_acc__Specification5_spec__3_~tmp~0, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~0;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 616#L132 __utac_acc__Specification5_spec__3_#t~ret18 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~0 := __utac_acc__Specification5_spec__3_#t~ret18;havoc __utac_acc__Specification5_spec__3_#t~ret18; 529#L180 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~0); 531#L180-1 [2021-11-02 22:36:41,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:36:41,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2021-11-02 22:36:41,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:36:41,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380528882] [2021-11-02 22:36:41,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:36:41,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:36:41,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:36:41,355 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 22:36:41,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:36:41,431 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-02 22:36:41,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:36:41,432 INFO L85 PathProgramCache]: Analyzing trace with hash 459590415, now seen corresponding path program 1 times [2021-11-02 22:36:41,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:36:41,433 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690250326] [2021-11-02 22:36:41,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:36:41,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:36:41,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:36:41,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:36:41,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:36:41,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690250326] [2021-11-02 22:36:41,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690250326] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:36:41,464 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:36:41,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:36:41,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741347546] [2021-11-02 22:36:41,464 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-02 22:36:41,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:36:41,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:36:41,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:36:41,466 INFO L87 Difference]: Start difference. First operand 159 states and 218 transitions. cyclomatic complexity: 61 Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:36:41,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:36:41,615 INFO L93 Difference]: Finished difference Result 437 states and 587 transitions. [2021-11-02 22:36:41,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 22:36:41,616 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 437 states and 587 transitions. [2021-11-02 22:36:41,622 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 283 [2021-11-02 22:36:41,626 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 437 states to 437 states and 587 transitions. [2021-11-02 22:36:41,626 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 437 [2021-11-02 22:36:41,627 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 437 [2021-11-02 22:36:41,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 437 states and 587 transitions. [2021-11-02 22:36:41,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:36:41,633 INFO L681 BuchiCegarLoop]: Abstraction has 437 states and 587 transitions. [2021-11-02 22:36:41,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states and 587 transitions. [2021-11-02 22:36:41,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 311. [2021-11-02 22:36:41,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 311 states have (on average 1.3344051446945338) internal successors, (415), 310 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:36:41,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 415 transitions. [2021-11-02 22:36:41,665 INFO L704 BuchiCegarLoop]: Abstraction has 311 states and 415 transitions. [2021-11-02 22:36:41,665 INFO L587 BuchiCegarLoop]: Abstraction has 311 states and 415 transitions. [2021-11-02 22:36:41,665 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-11-02 22:36:41,665 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 311 states and 415 transitions. [2021-11-02 22:36:41,667 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 220 [2021-11-02 22:36:41,667 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-02 22:36:41,668 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-02 22:36:41,668 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:36:41,668 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:36:41,669 INFO L791 eck$LassoCheckResult]: Stem: 1261#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(13);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(110, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 2 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string29.base, #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 2 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 3 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string31.base, #t~string31.offset, 1);call write~init~int(80, #t~string31.base, 1 + #t~string31.offset, 1);call write~init~int(117, #t~string31.base, 2 + #t~string31.offset, 1);call write~init~int(109, #t~string31.base, 3 + #t~string31.offset, 1);call write~init~int(112, #t~string31.base, 4 + #t~string31.offset, 1);call write~init~int(58, #t~string31.base, 5 + #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 6 + #t~string31.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string33.base, #t~string33.offset, 1);call write~init~int(110, #t~string33.base, 1 + #t~string33.offset, 1);call write~init~int(0, #t~string33.base, 2 + #t~string33.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string35.base, #t~string35.offset, 1);call write~init~int(102, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(102, #t~string35.base, 2 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 3 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string37.base, #t~string37.offset, 1);call write~init~int(32, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 2 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string39.base, #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 1 + #t~string39.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(21);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(21);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(30);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(9);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(25);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(30);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(9);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~switchedOnBeforeTS~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 1196#L-1 havoc main_#res;havoc main_#t~ret20, main_~retValue_acc~3, main_~tmp~1;havoc main_~retValue_acc~3;havoc main_~tmp~1; 1197#L584 havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 1169#L592 main_#t~ret20 := valid_product_#res;main_~tmp~1 := main_#t~ret20;havoc main_#t~ret20; 1170#L291 assume 0 != main_~tmp~1; 1242#L263 ~switchedOnBeforeTS~0 := 0; 1239#L159 havoc test_#t~nondet41, test_#t~nondet42, test_#t~nondet43, test_#t~nondet44, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1240#L180-1 [2021-11-02 22:36:41,669 INFO L793 eck$LassoCheckResult]: Loop: 1240#L180-1 assume !false; 1188#L508 assume test_~splverifierCounter~0 < 4; 1189#L509 test_~tmp~5 := test_#t~nondet41;havoc test_#t~nondet41; 1210#L517 assume !(0 != test_~tmp~5); 1443#L517-1 test_~tmp___0~2 := test_#t~nondet42;havoc test_#t~nondet42; 1449#L527 assume !(0 != test_~tmp___0~2); 1447#L527-1 test_~tmp___2~0 := test_#t~nondet43;havoc test_#t~nondet43; 1446#L537 assume 0 != test_~tmp___2~0; 1444#L543-2 havoc __utac_acc__Specification5_spec__2_#t~ret17;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~5;havoc isPumpRunning_~retValue_acc~5;isPumpRunning_~retValue_acc~5 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~5; 1145#L437 __utac_acc__Specification5_spec__2_#t~ret17 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret17;havoc __utac_acc__Specification5_spec__2_#t~ret17; 1146#L169 assume !(0 != ~pumpRunning~0); 1185#L326 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret22, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 1186#L384 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret21, processEnvironment__wrappee__highWaterSensor_~tmp~2;havoc processEnvironment__wrappee__highWaterSensor_~tmp~2; 1217#L358-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret40, isHighWaterLevel_~retValue_acc~6, isHighWaterLevel_~tmp~4, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~6;havoc isHighWaterLevel_~tmp~4;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~2;havoc isHighWaterSensorDry_~retValue_acc~2; 1205#L140-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 1206#L145-1 isHighWaterLevel_#t~ret40 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~4 := isHighWaterLevel_#t~ret40;havoc isHighWaterLevel_#t~ret40; 1231#L486-3 assume 0 != isHighWaterLevel_~tmp~4;isHighWaterLevel_~tmp___0~1 := 0; 1234#L486-5 isHighWaterLevel_~retValue_acc~6 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~6; 1241#L492-1 processEnvironment__wrappee__highWaterSensor_#t~ret21 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~2 := processEnvironment__wrappee__highWaterSensor_#t~ret21;havoc processEnvironment__wrappee__highWaterSensor_#t~ret21; 1182#L362-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~2); 1175#L333 havoc __utac_acc__Specification5_spec__3_#t~ret18, __utac_acc__Specification5_spec__3_#t~ret19, __utac_acc__Specification5_spec__3_~tmp~0, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~0;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 1229#L132 __utac_acc__Specification5_spec__3_#t~ret18 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~0 := __utac_acc__Specification5_spec__3_#t~ret18;havoc __utac_acc__Specification5_spec__3_#t~ret18; 1141#L180 assume 2 != __utac_acc__Specification5_spec__3_~tmp~0;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~5;havoc isPumpRunning_~retValue_acc~5;isPumpRunning_~retValue_acc~5 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~5; 1142#L437-1 __utac_acc__Specification5_spec__3_#t~ret19 := isPumpRunning_#res;__utac_acc__Specification5_spec__3_~tmp___0~0 := __utac_acc__Specification5_spec__3_#t~ret19;havoc __utac_acc__Specification5_spec__3_#t~ret19; 1191#L184 assume !(0 != __utac_acc__Specification5_spec__3_~tmp___0~0); 1240#L180-1 [2021-11-02 22:36:41,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:36:41,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 4 times [2021-11-02 22:36:41,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:36:41,670 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81427878] [2021-11-02 22:36:41,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:36:41,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:36:41,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:36:41,695 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 22:36:41,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:36:41,762 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-02 22:36:41,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:36:41,764 INFO L85 PathProgramCache]: Analyzing trace with hash -715255062, now seen corresponding path program 1 times [2021-11-02 22:36:41,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:36:41,766 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177082044] [2021-11-02 22:36:41,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:36:41,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:36:41,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:36:41,778 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 22:36:41,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:36:41,790 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-02 22:36:41,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:36:41,791 INFO L85 PathProgramCache]: Analyzing trace with hash -778681244, now seen corresponding path program 1 times [2021-11-02 22:36:41,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:36:41,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778512254] [2021-11-02 22:36:41,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:36:41,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:36:41,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:36:41,835 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 22:36:41,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:36:41,918 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-02 22:37:32,386 WARN L207 SmtUtils]: Spent 50.12 s on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-11-02 22:38:25,194 WARN L207 SmtUtils]: Spent 25.67 s on a formula simplification that was a NOOP. DAG size: 435 [2021-11-02 22:38:25,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 02.11 10:38:25 BoogieIcfgContainer [2021-11-02 22:38:25,326 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-11-02 22:38:25,326 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-02 22:38:25,326 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-02 22:38:25,327 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-02 22:38:25,327 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:36:39" (3/4) ... [2021-11-02 22:38:25,329 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-11-02 22:38:25,393 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d0a0e-4273-4a77-8933-96bedf698b69/bin/uautomizer-tBqnrhUYjU/witness.graphml [2021-11-02 22:38:25,394 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-02 22:38:25,395 INFO L168 Benchmark]: Toolchain (without parser) took 107407.25 ms. Allocated memory was 96.5 MB in the beginning and 148.9 MB in the end (delta: 52.4 MB). Free memory was 60.2 MB in the beginning and 102.7 MB in the end (delta: -42.5 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. [2021-11-02 22:38:25,395 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 96.5 MB. Free memory was 68.1 MB in the beginning and 68.1 MB in the end (delta: 29.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 22:38:25,395 INFO L168 Benchmark]: CACSL2BoogieTranslator took 523.07 ms. Allocated memory is still 96.5 MB. Free memory was 60.0 MB in the beginning and 62.0 MB in the end (delta: -2.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-11-02 22:38:25,399 INFO L168 Benchmark]: Boogie Procedure Inliner took 85.89 ms. Allocated memory is still 96.5 MB. Free memory was 62.0 MB in the beginning and 58.4 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-02 22:38:25,399 INFO L168 Benchmark]: Boogie Preprocessor took 65.73 ms. Allocated memory is still 96.5 MB. Free memory was 58.4 MB in the beginning and 55.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-02 22:38:25,405 INFO L168 Benchmark]: RCFGBuilder took 1008.18 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 55.8 MB in the beginning and 71.3 MB in the end (delta: -15.5 MB). Peak memory consumption was 29.5 MB. Max. memory is 16.1 GB. [2021-11-02 22:38:25,405 INFO L168 Benchmark]: BuchiAutomizer took 105648.41 ms. Allocated memory was 117.4 MB in the beginning and 148.9 MB in the end (delta: 31.5 MB). Free memory was 71.3 MB in the beginning and 105.7 MB in the end (delta: -34.4 MB). Peak memory consumption was 77.5 MB. Max. memory is 16.1 GB. [2021-11-02 22:38:25,406 INFO L168 Benchmark]: Witness Printer took 67.40 ms. Allocated memory is still 148.9 MB. Free memory was 104.8 MB in the beginning and 102.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-02 22:38:25,408 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 96.5 MB. Free memory was 68.1 MB in the beginning and 68.1 MB in the end (delta: 29.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 523.07 ms. Allocated memory is still 96.5 MB. Free memory was 60.0 MB in the beginning and 62.0 MB in the end (delta: -2.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 85.89 ms. Allocated memory is still 96.5 MB. Free memory was 62.0 MB in the beginning and 58.4 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 65.73 ms. Allocated memory is still 96.5 MB. Free memory was 58.4 MB in the beginning and 55.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1008.18 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 55.8 MB in the beginning and 71.3 MB in the end (delta: -15.5 MB). Peak memory consumption was 29.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 105648.41 ms. Allocated memory was 117.4 MB in the beginning and 148.9 MB in the end (delta: 31.5 MB). Free memory was 71.3 MB in the beginning and 105.7 MB in the end (delta: -34.4 MB). Peak memory consumption was 77.5 MB. Max. memory is 16.1 GB. * Witness Printer took 67.40 ms. Allocated memory is still 148.9 MB. Free memory was 104.8 MB in the beginning and 102.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 311 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 105.5s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 104.7s. Construction of modules took 0.3s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 126 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 311 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 553 SDtfs, 1260 SDslu, 565 SDs, 0 SdLazy, 127 SolverSat, 61 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 507]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=31835} State at position 1 is {NULL=0, NULL=0, NULL=31855, NULL=31835, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4f0cc553=0, NULL=31848, NULL=31858, methaneLevelCritical=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1789f81=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@fa6f1b3=0, tmp=0, NULL=0, NULL=31861, NULL=31838, NULL=0, tmp___1=0, NULL=31853, retValue_acc=0, NULL=0, NULL=31859, cleanupTimeShifts=4, NULL=31843, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@604ff236=61, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@56e1062a=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@28ca597c=0, waterLevel=1, NULL=0, \result=1, retValue_acc=1, head=0, pumpRunning=0, NULL=31847, tmp=1, retValue_acc=1, NULL=0, NULL=0, \result=1, NULL=0, tmp=1, NULL=0, NULL=31860, NULL=0, NULL=0, NULL=0, NULL=0, tmp___0=0, NULL=31846, NULL=31851, tmp=0, head=0, NULL=31845, NULL=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@789f6444=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@29418043=0, retValue_acc=0, NULL=31854, NULL=31857, tmp___0=0, NULL=0, NULL=0, NULL=31839, NULL=0, tmp=1, NULL=0, NULL=0, switchedOnBeforeTS=0, NULL=31863, NULL=31841, tmp=0, \result=0, NULL=0, NULL=0, NULL=0, systemActive=1, NULL=31852, \result=1, NULL=0, NULL=31856, \result=0, NULL=0, NULL=31842, tmp___0=0, \result=0, NULL=31850, NULL=0, NULL=31862, NULL=31837, retValue_acc=1, NULL=31849, tmp___2=61, splverifierCounter=0, NULL=0, NULL=31844, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7ed1922d=0, NULL=31836, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@63b34516=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3b4a008=0, NULL=31840, retValue_acc=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L57] int waterLevel = 1; [L58] int methaneLevelCritical = 0; [L153] int switchedOnBeforeTS ; [L202] int cleanupTimeShifts = 4; [L316] int pumpRunning = 0; [L317] int systemActive = 1; [L766] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L282] int retValue_acc ; [L283] int tmp ; [L588] int retValue_acc ; [L591] retValue_acc = 1 [L592] return (retValue_acc); [L289] tmp = valid_product() [L291] COND TRUE \read(tmp) [L158] switchedOnBeforeTS = 0 [L498] int splverifierCounter ; [L499] int tmp ; [L500] int tmp___0 ; [L501] int tmp___1 ; [L502] int tmp___2 ; [L505] splverifierCounter = 0 Loop: [L507] COND TRUE 1 [L509] COND TRUE splverifierCounter < 4 [L515] tmp = __VERIFIER_nondet_int() [L517] COND FALSE !(\read(tmp)) [L525] tmp___0 = __VERIFIER_nondet_int() [L527] COND FALSE !(\read(tmp___0)) [L535] tmp___2 = __VERIFIER_nondet_int() [L537] COND TRUE \read(tmp___2) [L433] int retValue_acc ; [L436] retValue_acc = pumpRunning [L437] return (retValue_acc); [L167] switchedOnBeforeTS = isPumpRunning() [L326] COND FALSE !(\read(pumpRunning)) [L333] COND TRUE \read(systemActive) [L381] int tmp ; [L384] COND FALSE !(\read(pumpRunning)) [L355] int tmp ; [L358] COND TRUE ! pumpRunning [L478] int retValue_acc ; [L479] int tmp ; [L480] int tmp___0 ; [L137] int retValue_acc ; [L140] COND TRUE waterLevel < 2 [L141] retValue_acc = 1 [L142] return (retValue_acc); [L484] tmp = isHighWaterSensorDry() [L486] COND TRUE \read(tmp) [L487] tmp___0 = 0 [L491] retValue_acc = tmp___0 [L492] return (retValue_acc); [L360] tmp = isHighWaterLevel() [L362] COND FALSE !(\read(tmp)) [L173] int tmp ; [L174] int tmp___0 ; [L128] int retValue_acc ; [L131] retValue_acc = waterLevel [L132] return (retValue_acc); [L178] tmp = getWaterLevel() [L180] COND TRUE tmp != 2 [L433] int retValue_acc ; [L436] retValue_acc = pumpRunning [L437] return (retValue_acc); [L182] tmp___0 = isPumpRunning() [L184] COND FALSE !(\read(tmp___0)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-11-02 22:38:25,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d0a0e-4273-4a77-8933-96bedf698b69/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)