./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec5_product64.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829c2ed6-2df1-418b-bbdb-63886958a4be/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829c2ed6-2df1-418b-bbdb-63886958a4be/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829c2ed6-2df1-418b-bbdb-63886958a4be/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829c2ed6-2df1-418b-bbdb-63886958a4be/bin/uautomizer-j4sWxH34Be/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec5_product64.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829c2ed6-2df1-418b-bbdb-63886958a4be/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829c2ed6-2df1-418b-bbdb-63886958a4be/bin/uautomizer-j4sWxH34Be --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 323b2112d56f35ec9fc5a7837411d8e54d2d46e3d8981d77e080eaf0dd99497b .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:25:51,652 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:25:51,656 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:25:51,730 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:25:51,731 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:25:51,738 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:25:51,740 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:25:51,746 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:25:51,749 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:25:51,756 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:25:51,757 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:25:51,760 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:25:51,760 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:25:51,764 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:25:51,767 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:25:51,772 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:25:51,775 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:25:51,776 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:25:51,779 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:25:51,792 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:25:51,794 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:25:51,796 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:25:51,803 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:25:51,804 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:25:51,807 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:25:51,808 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:25:51,808 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:25:51,809 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:25:51,810 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:25:51,811 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:25:51,812 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:25:51,813 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:25:51,814 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:25:51,815 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:25:51,816 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:25:51,817 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:25:51,817 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:25:51,818 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:25:51,818 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:25:51,819 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:25:51,820 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:25:51,821 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829c2ed6-2df1-418b-bbdb-63886958a4be/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-21 19:25:51,848 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:25:51,849 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:25:51,849 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:25:51,849 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:25:51,850 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:25:51,851 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:25:51,851 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:25:51,851 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-21 19:25:51,851 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-21 19:25:51,852 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-21 19:25:51,852 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-21 19:25:51,852 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-21 19:25:51,852 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-21 19:25:51,853 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:25:51,853 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:25:51,853 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 19:25:51,853 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:25:51,854 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:25:51,854 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:25:51,854 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-21 19:25:51,854 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-21 19:25:51,855 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-21 19:25:51,855 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:25:51,855 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:25:51,855 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-21 19:25:51,855 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:25:51,856 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-21 19:25:51,856 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:25:51,856 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:25:51,857 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:25:51,857 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:25:51,857 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:25:51,858 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-21 19:25:51,858 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_829c2ed6-2df1-418b-bbdb-63886958a4be/bin/uautomizer-j4sWxH34Be/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829c2ed6-2df1-418b-bbdb-63886958a4be/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 323b2112d56f35ec9fc5a7837411d8e54d2d46e3d8981d77e080eaf0dd99497b [2021-10-21 19:25:52,186 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:25:52,243 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:25:52,246 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:25:52,247 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:25:52,249 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:25:52,250 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829c2ed6-2df1-418b-bbdb-63886958a4be/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/product-lines/minepump_spec5_product64.cil.c [2021-10-21 19:25:52,355 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829c2ed6-2df1-418b-bbdb-63886958a4be/bin/uautomizer-j4sWxH34Be/data/a30989a71/b2c61d9981d042878d064b372c6539e7/FLAG945e7d7e0 [2021-10-21 19:25:53,036 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:25:53,036 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829c2ed6-2df1-418b-bbdb-63886958a4be/sv-benchmarks/c/product-lines/minepump_spec5_product64.cil.c [2021-10-21 19:25:53,051 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829c2ed6-2df1-418b-bbdb-63886958a4be/bin/uautomizer-j4sWxH34Be/data/a30989a71/b2c61d9981d042878d064b372c6539e7/FLAG945e7d7e0 [2021-10-21 19:25:53,284 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829c2ed6-2df1-418b-bbdb-63886958a4be/bin/uautomizer-j4sWxH34Be/data/a30989a71/b2c61d9981d042878d064b372c6539e7 [2021-10-21 19:25:53,287 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:25:53,288 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:25:53,291 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:25:53,291 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:25:53,296 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:25:53,297 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:25:53" (1/1) ... [2021-10-21 19:25:53,298 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39d4a413 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:25:53, skipping insertion in model container [2021-10-21 19:25:53,299 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:25:53" (1/1) ... [2021-10-21 19:25:53,308 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:25:53,361 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:25:53,635 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_829c2ed6-2df1-418b-bbdb-63886958a4be/sv-benchmarks/c/product-lines/minepump_spec5_product64.cil.c[9626,9639] [2021-10-21 19:25:53,689 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:25:53,700 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:25:53,783 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_829c2ed6-2df1-418b-bbdb-63886958a4be/sv-benchmarks/c/product-lines/minepump_spec5_product64.cil.c[9626,9639] [2021-10-21 19:25:53,837 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:25:53,885 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:25:53,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:25:53 WrapperNode [2021-10-21 19:25:53,885 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:25:53,887 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:25:53,887 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:25:53,887 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:25:53,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:25:53" (1/1) ... [2021-10-21 19:25:53,936 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:25:53" (1/1) ... [2021-10-21 19:25:53,998 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:25:53,998 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:25:53,999 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:25:53,999 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:25:54,015 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:25:53" (1/1) ... [2021-10-21 19:25:54,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:25:53" (1/1) ... [2021-10-21 19:25:54,024 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:25:53" (1/1) ... [2021-10-21 19:25:54,024 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:25:53" (1/1) ... [2021-10-21 19:25:54,080 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:25:53" (1/1) ... [2021-10-21 19:25:54,107 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:25:53" (1/1) ... [2021-10-21 19:25:54,111 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:25:53" (1/1) ... [2021-10-21 19:25:54,118 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:25:54,128 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:25:54,143 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:25:54,143 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:25:54,144 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:25:53" (1/1) ... [2021-10-21 19:25:54,153 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:25:54,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829c2ed6-2df1-418b-bbdb-63886958a4be/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:25:54,184 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829c2ed6-2df1-418b-bbdb-63886958a4be/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:25:54,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829c2ed6-2df1-418b-bbdb-63886958a4be/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-21 19:25:54,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:25:54,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:25:54,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:25:54,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:25:55,634 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:25:55,634 INFO L299 CfgBuilder]: Removed 368 assume(true) statements. [2021-10-21 19:25:55,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:25:55 BoogieIcfgContainer [2021-10-21 19:25:55,638 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:25:55,642 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-21 19:25:55,643 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-21 19:25:55,648 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-21 19:25:55,649 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:25:55,650 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.10 07:25:53" (1/3) ... [2021-10-21 19:25:55,652 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2ab9182 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 07:25:55, skipping insertion in model container [2021-10-21 19:25:55,653 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:25:55,653 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:25:53" (2/3) ... [2021-10-21 19:25:55,654 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2ab9182 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 07:25:55, skipping insertion in model container [2021-10-21 19:25:55,654 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:25:55,654 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:25:55" (3/3) ... [2021-10-21 19:25:55,656 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec5_product64.cil.c [2021-10-21 19:25:55,724 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-21 19:25:55,725 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-21 19:25:55,725 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-21 19:25:55,725 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-21 19:25:55,725 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-21 19:25:55,725 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-21 19:25:55,725 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-21 19:25:55,726 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-21 19:25:55,750 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 233 states, 232 states have (on average 1.5) internal successors, (348), 232 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:25:55,785 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 153 [2021-10-21 19:25:55,785 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:25:55,786 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:25:55,796 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:25:55,796 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:25:55,796 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-21 19:25:55,798 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 233 states, 232 states have (on average 1.5) internal successors, (348), 232 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:25:55,812 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 153 [2021-10-21 19:25:55,819 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:25:55,819 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:25:55,820 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:25:55,820 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:25:55,825 INFO L791 eck$LassoCheckResult]: Stem: 225#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~string20.base, #t~string20.offset := #Ultimate.allocOnStack(13);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(110, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 2 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(102, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(102, #t~string24.base, 2 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 3 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string26.base, #t~string26.offset, 1);call write~init~int(80, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(117, #t~string26.base, 2 + #t~string26.offset, 1);call write~init~int(109, #t~string26.base, 3 + #t~string26.offset, 1);call write~init~int(112, #t~string26.base, 4 + #t~string26.offset, 1);call write~init~int(58, #t~string26.base, 5 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 6 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string28.base, #t~string28.offset, 1);call write~init~int(110, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 2 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 2 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 3 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string32.base, #t~string32.offset, 1);call write~init~int(32, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 2 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string34.base, #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 1 + #t~string34.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(13);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string40.base, #t~string40.offset, 1);call write~init~int(77, #t~string40.base, 1 + #t~string40.offset, 1);call write~init~int(101, #t~string40.base, 2 + #t~string40.offset, 1);call write~init~int(116, #t~string40.base, 3 + #t~string40.offset, 1);call write~init~int(104, #t~string40.base, 4 + #t~string40.offset, 1);call write~init~int(58, #t~string40.base, 5 + #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 6 + #t~string40.offset, 1);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string42.base, #t~string42.offset, 1);call write~init~int(82, #t~string42.base, 1 + #t~string42.offset, 1);call write~init~int(73, #t~string42.base, 2 + #t~string42.offset, 1);call write~init~int(84, #t~string42.base, 3 + #t~string42.offset, 1);call write~init~int(0, #t~string42.base, 4 + #t~string42.offset, 1);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string44.base, #t~string44.offset, 1);call write~init~int(75, #t~string44.base, 1 + #t~string44.offset, 1);call write~init~int(0, #t~string44.base, 2 + #t~string44.offset, 1);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string46.base, #t~string46.offset, 1);call write~init~int(0, #t~string46.base, 1 + #t~string46.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(21);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(30);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(9);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(21);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(30);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(9);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(25);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(30);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(9);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(25);~switchedOnBeforeTS~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 157#L-1true havoc main_#res;havoc main_#t~ret47, main_~retValue_acc~8, main_~tmp~8;havoc main_~retValue_acc~8;havoc main_~tmp~8; 74#L685true havoc valid_product_#res;havoc valid_product_~retValue_acc~10;havoc valid_product_~retValue_acc~10;valid_product_~retValue_acc~10 := 1;valid_product_#res := valid_product_~retValue_acc~10; 228#L693true main_#t~ret47 := valid_product_#res;main_~tmp~8 := main_#t~ret47;havoc main_#t~ret47; 25#L640true assume 0 != main_~tmp~8; 33#L613true ~switchedOnBeforeTS~0 := 0; 93#L59true havoc test_#t~nondet10, test_#t~nondet11, test_#t~nondet12, test_#t~nondet13, test_~splverifierCounter~0, test_~tmp~1, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~1;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 222#L80-1true [2021-10-21 19:25:55,826 INFO L793 eck$LassoCheckResult]: Loop: 222#L80-1true assume !false; 226#L119true assume test_~splverifierCounter~0 < 4; 167#L120true test_~tmp~1 := test_#t~nondet10;havoc test_#t~nondet10; 173#L128true assume !(0 != test_~tmp~1); 203#L128-1true test_~tmp___0~1 := test_#t~nondet11;havoc test_#t~nondet11; 181#L138true assume !(0 != test_~tmp___0~1); 155#L138-1true test_~tmp___2~0 := test_#t~nondet12;havoc test_#t~nondet12; 24#L148true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 86#L156-1true havoc __utac_acc__Specification5_spec__2_#t~ret7;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~1;havoc isPumpRunning_~retValue_acc~1;isPumpRunning_~retValue_acc~1 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~1; 77#L349true __utac_acc__Specification5_spec__2_#t~ret7 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret7;havoc __utac_acc__Specification5_spec__2_#t~ret7; 12#L69true assume !(0 != ~pumpRunning~0); 96#L195true assume !(0 != ~systemActive~0); 202#L202true havoc __utac_acc__Specification5_spec__3_#t~ret8, __utac_acc__Specification5_spec__3_#t~ret9, __utac_acc__Specification5_spec__3_~tmp~0, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~0;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~5;havoc getWaterLevel_~retValue_acc~5;getWaterLevel_~retValue_acc~5 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~5; 205#L526true __utac_acc__Specification5_spec__3_#t~ret8 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~0 := __utac_acc__Specification5_spec__3_#t~ret8;havoc __utac_acc__Specification5_spec__3_#t~ret8; 126#L80true assume !(2 != __utac_acc__Specification5_spec__3_~tmp~0); 222#L80-1true [2021-10-21 19:25:55,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:25:55,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-10-21 19:25:55,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:25:55,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522141752] [2021-10-21 19:25:55,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:25:55,849 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:25:56,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:25:56,137 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:25:56,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:25:56,328 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:25:56,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:25:56,331 INFO L82 PathProgramCache]: Analyzing trace with hash 681690678, now seen corresponding path program 1 times [2021-10-21 19:25:56,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:25:56,332 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883187247] [2021-10-21 19:25:56,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:25:56,332 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:25:56,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:25:56,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:25:56,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:25:56,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883187247] [2021-10-21 19:25:56,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883187247] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:25:56,408 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:25:56,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:25:56,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157265641] [2021-10-21 19:25:56,414 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:25:56,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:25:56,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:25:56,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:25:56,438 INFO L87 Difference]: Start difference. First operand has 233 states, 232 states have (on average 1.5) internal successors, (348), 232 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:25:56,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:25:56,544 INFO L93 Difference]: Finished difference Result 459 states and 671 transitions. [2021-10-21 19:25:56,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:25:56,551 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 459 states and 671 transitions. [2021-10-21 19:25:56,566 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 302 [2021-10-21 19:25:56,584 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 459 states to 445 states and 656 transitions. [2021-10-21 19:25:56,586 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 445 [2021-10-21 19:25:56,588 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 445 [2021-10-21 19:25:56,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 445 states and 656 transitions. [2021-10-21 19:25:56,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:25:56,593 INFO L681 BuchiCegarLoop]: Abstraction has 445 states and 656 transitions. [2021-10-21 19:25:56,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states and 656 transitions. [2021-10-21 19:25:56,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 443. [2021-10-21 19:25:56,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 443 states have (on average 1.4740406320541761) internal successors, (653), 442 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:25:56,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 653 transitions. [2021-10-21 19:25:56,664 INFO L704 BuchiCegarLoop]: Abstraction has 443 states and 653 transitions. [2021-10-21 19:25:56,665 INFO L587 BuchiCegarLoop]: Abstraction has 443 states and 653 transitions. [2021-10-21 19:25:56,665 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-21 19:25:56,665 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 443 states and 653 transitions. [2021-10-21 19:25:56,669 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 300 [2021-10-21 19:25:56,670 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:25:56,670 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:25:56,671 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:25:56,671 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:25:56,671 INFO L791 eck$LassoCheckResult]: Stem: 958#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~string20.base, #t~string20.offset := #Ultimate.allocOnStack(13);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(110, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 2 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(102, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(102, #t~string24.base, 2 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 3 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string26.base, #t~string26.offset, 1);call write~init~int(80, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(117, #t~string26.base, 2 + #t~string26.offset, 1);call write~init~int(109, #t~string26.base, 3 + #t~string26.offset, 1);call write~init~int(112, #t~string26.base, 4 + #t~string26.offset, 1);call write~init~int(58, #t~string26.base, 5 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 6 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string28.base, #t~string28.offset, 1);call write~init~int(110, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 2 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 2 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 3 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string32.base, #t~string32.offset, 1);call write~init~int(32, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 2 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string34.base, #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 1 + #t~string34.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(13);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string40.base, #t~string40.offset, 1);call write~init~int(77, #t~string40.base, 1 + #t~string40.offset, 1);call write~init~int(101, #t~string40.base, 2 + #t~string40.offset, 1);call write~init~int(116, #t~string40.base, 3 + #t~string40.offset, 1);call write~init~int(104, #t~string40.base, 4 + #t~string40.offset, 1);call write~init~int(58, #t~string40.base, 5 + #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 6 + #t~string40.offset, 1);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string42.base, #t~string42.offset, 1);call write~init~int(82, #t~string42.base, 1 + #t~string42.offset, 1);call write~init~int(73, #t~string42.base, 2 + #t~string42.offset, 1);call write~init~int(84, #t~string42.base, 3 + #t~string42.offset, 1);call write~init~int(0, #t~string42.base, 4 + #t~string42.offset, 1);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string44.base, #t~string44.offset, 1);call write~init~int(75, #t~string44.base, 1 + #t~string44.offset, 1);call write~init~int(0, #t~string44.base, 2 + #t~string44.offset, 1);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string46.base, #t~string46.offset, 1);call write~init~int(0, #t~string46.base, 1 + #t~string46.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(21);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(30);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(9);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(21);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(30);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(9);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(25);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(30);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(9);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(25);~switchedOnBeforeTS~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 910#L-1 havoc main_#res;havoc main_#t~ret47, main_~retValue_acc~8, main_~tmp~8;havoc main_~retValue_acc~8;havoc main_~tmp~8; 830#L685 havoc valid_product_#res;havoc valid_product_~retValue_acc~10;havoc valid_product_~retValue_acc~10;valid_product_~retValue_acc~10 := 1;valid_product_#res := valid_product_~retValue_acc~10; 831#L693 main_#t~ret47 := valid_product_#res;main_~tmp~8 := main_#t~ret47;havoc main_#t~ret47; 751#L640 assume 0 != main_~tmp~8; 752#L613 ~switchedOnBeforeTS~0 := 0; 766#L59 havoc test_#t~nondet10, test_#t~nondet11, test_#t~nondet12, test_#t~nondet13, test_~splverifierCounter~0, test_~tmp~1, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~1;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 761#L80-1 [2021-10-21 19:25:56,672 INFO L793 eck$LassoCheckResult]: Loop: 761#L80-1 assume !false; 959#L119 assume test_~splverifierCounter~0 < 4; 919#L120 test_~tmp~1 := test_#t~nondet10;havoc test_#t~nondet10; 920#L128 assume !(0 != test_~tmp~1); 717#L128-1 test_~tmp___0~1 := test_#t~nondet11;havoc test_#t~nondet11; 969#L138 assume !(0 != test_~tmp___0~1); 967#L138-1 test_~tmp___2~0 := test_#t~nondet12;havoc test_#t~nondet12; 966#L148 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 750#L156-1 havoc __utac_acc__Specification5_spec__2_#t~ret7;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~1;havoc isPumpRunning_~retValue_acc~1;isPumpRunning_~retValue_acc~1 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~1; 833#L349 __utac_acc__Specification5_spec__2_#t~ret7 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret7;havoc __utac_acc__Specification5_spec__2_#t~ret7; 720#L69 assume !(0 != ~pumpRunning~0); 721#L195 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret16, processEnvironment_~tmp~4;havoc processEnvironment_~tmp~4; 795#L279 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret15, processEnvironment__wrappee__methaneQuery_~tmp~3;havoc processEnvironment__wrappee__methaneQuery_~tmp~3; 741#L253-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret14, processEnvironment__wrappee__highWaterSensor_~tmp~2;havoc processEnvironment__wrappee__highWaterSensor_~tmp~2; 742#L227-3 assume !(0 == ~pumpRunning~0); 704#L202 havoc __utac_acc__Specification5_spec__3_#t~ret8, __utac_acc__Specification5_spec__3_#t~ret9, __utac_acc__Specification5_spec__3_~tmp~0, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~0;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~5;havoc getWaterLevel_~retValue_acc~5;getWaterLevel_~retValue_acc~5 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~5; 944#L526 __utac_acc__Specification5_spec__3_#t~ret8 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~0 := __utac_acc__Specification5_spec__3_#t~ret8;havoc __utac_acc__Specification5_spec__3_#t~ret8; 885#L80 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~0); 761#L80-1 [2021-10-21 19:25:56,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:25:56,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-10-21 19:25:56,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:25:56,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420026018] [2021-10-21 19:25:56,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:25:56,674 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:25:56,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:25:56,796 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:25:56,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:25:56,889 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:25:56,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:25:56,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1785171479, now seen corresponding path program 1 times [2021-10-21 19:25:56,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:25:56,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687931441] [2021-10-21 19:25:56,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:25:56,892 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:25:56,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:25:56,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:25:56,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:25:56,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687931441] [2021-10-21 19:25:56,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687931441] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:25:56,914 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:25:56,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:25:56,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687942459] [2021-10-21 19:25:56,915 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:25:56,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:25:56,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:25:56,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:25:56,916 INFO L87 Difference]: Start difference. First operand 443 states and 653 transitions. cyclomatic complexity: 213 Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:25:57,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:25:57,047 INFO L93 Difference]: Finished difference Result 452 states and 631 transitions. [2021-10-21 19:25:57,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:25:57,048 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 452 states and 631 transitions. [2021-10-21 19:25:57,055 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 315 [2021-10-21 19:25:57,062 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 452 states to 452 states and 631 transitions. [2021-10-21 19:25:57,063 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 452 [2021-10-21 19:25:57,064 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 452 [2021-10-21 19:25:57,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 452 states and 631 transitions. [2021-10-21 19:25:57,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:25:57,069 INFO L681 BuchiCegarLoop]: Abstraction has 452 states and 631 transitions. [2021-10-21 19:25:57,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states and 631 transitions. [2021-10-21 19:25:57,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 452. [2021-10-21 19:25:57,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 452 states have (on average 1.3960176991150441) internal successors, (631), 451 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:25:57,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 631 transitions. [2021-10-21 19:25:57,097 INFO L704 BuchiCegarLoop]: Abstraction has 452 states and 631 transitions. [2021-10-21 19:25:57,097 INFO L587 BuchiCegarLoop]: Abstraction has 452 states and 631 transitions. [2021-10-21 19:25:57,097 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-21 19:25:57,097 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 452 states and 631 transitions. [2021-10-21 19:25:57,103 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 315 [2021-10-21 19:25:57,103 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:25:57,103 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:25:57,105 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:25:57,105 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:25:57,105 INFO L791 eck$LassoCheckResult]: Stem: 1820#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~string20.base, #t~string20.offset := #Ultimate.allocOnStack(13);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(110, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 2 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(102, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(102, #t~string24.base, 2 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 3 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string26.base, #t~string26.offset, 1);call write~init~int(80, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(117, #t~string26.base, 2 + #t~string26.offset, 1);call write~init~int(109, #t~string26.base, 3 + #t~string26.offset, 1);call write~init~int(112, #t~string26.base, 4 + #t~string26.offset, 1);call write~init~int(58, #t~string26.base, 5 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 6 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string28.base, #t~string28.offset, 1);call write~init~int(110, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 2 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 2 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 3 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string32.base, #t~string32.offset, 1);call write~init~int(32, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 2 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string34.base, #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 1 + #t~string34.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(13);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string40.base, #t~string40.offset, 1);call write~init~int(77, #t~string40.base, 1 + #t~string40.offset, 1);call write~init~int(101, #t~string40.base, 2 + #t~string40.offset, 1);call write~init~int(116, #t~string40.base, 3 + #t~string40.offset, 1);call write~init~int(104, #t~string40.base, 4 + #t~string40.offset, 1);call write~init~int(58, #t~string40.base, 5 + #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 6 + #t~string40.offset, 1);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string42.base, #t~string42.offset, 1);call write~init~int(82, #t~string42.base, 1 + #t~string42.offset, 1);call write~init~int(73, #t~string42.base, 2 + #t~string42.offset, 1);call write~init~int(84, #t~string42.base, 3 + #t~string42.offset, 1);call write~init~int(0, #t~string42.base, 4 + #t~string42.offset, 1);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string44.base, #t~string44.offset, 1);call write~init~int(75, #t~string44.base, 1 + #t~string44.offset, 1);call write~init~int(0, #t~string44.base, 2 + #t~string44.offset, 1);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string46.base, #t~string46.offset, 1);call write~init~int(0, #t~string46.base, 1 + #t~string46.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(21);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(30);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(9);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(21);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(30);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(9);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(25);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(30);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(9);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(25);~switchedOnBeforeTS~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 1705#L-1 havoc main_#res;havoc main_#t~ret47, main_~retValue_acc~8, main_~tmp~8;havoc main_~retValue_acc~8;havoc main_~tmp~8; 1706#L685 havoc valid_product_#res;havoc valid_product_~retValue_acc~10;havoc valid_product_~retValue_acc~10;valid_product_~retValue_acc~10 := 1;valid_product_#res := valid_product_~retValue_acc~10; 1789#L693 main_#t~ret47 := valid_product_#res;main_~tmp~8 := main_#t~ret47;havoc main_#t~ret47; 1683#L640 assume 0 != main_~tmp~8; 1684#L613 ~switchedOnBeforeTS~0 := 0; 1701#L59 havoc test_#t~nondet10, test_#t~nondet11, test_#t~nondet12, test_#t~nondet13, test_~splverifierCounter~0, test_~tmp~1, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~1;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1809#L80-1 [2021-10-21 19:25:57,106 INFO L793 eck$LassoCheckResult]: Loop: 1809#L80-1 assume !false; 1855#L119 assume test_~splverifierCounter~0 < 4; 1850#L120 test_~tmp~1 := test_#t~nondet10;havoc test_#t~nondet10; 1851#L128 assume !(0 != test_~tmp~1); 1845#L128-1 test_~tmp___0~1 := test_#t~nondet11;havoc test_#t~nondet11; 1846#L138 assume !(0 != test_~tmp___0~1); 1840#L138-1 test_~tmp___2~0 := test_#t~nondet12;havoc test_#t~nondet12; 1841#L148 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 1832#L156-1 havoc __utac_acc__Specification5_spec__2_#t~ret7;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~1;havoc isPumpRunning_~retValue_acc~1;isPumpRunning_~retValue_acc~1 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~1; 2039#L349 __utac_acc__Specification5_spec__2_#t~ret7 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret7;havoc __utac_acc__Specification5_spec__2_#t~ret7; 1640#L69 assume !(0 != ~pumpRunning~0); 1641#L195 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret16, processEnvironment_~tmp~4;havoc processEnvironment_~tmp~4; 1931#L279 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret15, processEnvironment__wrappee__methaneQuery_~tmp~3;havoc processEnvironment__wrappee__methaneQuery_~tmp~3; 1927#L253-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret14, processEnvironment__wrappee__highWaterSensor_~tmp~2;havoc processEnvironment__wrappee__highWaterSensor_~tmp~2; 1930#L227-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret35, isHighWaterLevel_~retValue_acc~2, isHighWaterLevel_~tmp~6, isHighWaterLevel_~tmp___0~2;havoc isHighWaterLevel_~retValue_acc~2;havoc isHighWaterLevel_~tmp~6;havoc isHighWaterLevel_~tmp___0~2;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~6;havoc isHighWaterSensorDry_~retValue_acc~6; 1790#L534-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~6 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~6; 1614#L539-3 isHighWaterLevel_#t~ret35 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~6 := isHighWaterLevel_#t~ret35;havoc isHighWaterLevel_#t~ret35; 1615#L398-9 assume 0 != isHighWaterLevel_~tmp~6;isHighWaterLevel_~tmp___0~2 := 0; 1928#L398-11 isHighWaterLevel_~retValue_acc~2 := isHighWaterLevel_~tmp___0~2;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~2; 1825#L404-3 processEnvironment__wrappee__highWaterSensor_#t~ret14 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~2 := processEnvironment__wrappee__highWaterSensor_#t~ret14;havoc processEnvironment__wrappee__highWaterSensor_#t~ret14; 1648#L231-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~2); 1649#L202 havoc __utac_acc__Specification5_spec__3_#t~ret8, __utac_acc__Specification5_spec__3_#t~ret9, __utac_acc__Specification5_spec__3_~tmp~0, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~0;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~5;havoc getWaterLevel_~retValue_acc~5;getWaterLevel_~retValue_acc~5 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~5; 1863#L526 __utac_acc__Specification5_spec__3_#t~ret8 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~0 := __utac_acc__Specification5_spec__3_#t~ret8;havoc __utac_acc__Specification5_spec__3_#t~ret8; 1864#L80 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~0); 1809#L80-1 [2021-10-21 19:25:57,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:25:57,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2021-10-21 19:25:57,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:25:57,108 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160098508] [2021-10-21 19:25:57,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:25:57,108 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:25:57,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:25:57,162 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:25:57,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:25:57,236 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:25:57,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:25:57,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1255643605, now seen corresponding path program 1 times [2021-10-21 19:25:57,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:25:57,238 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776500924] [2021-10-21 19:25:57,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:25:57,239 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:25:57,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:25:57,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:25:57,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:25:57,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776500924] [2021-10-21 19:25:57,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776500924] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:25:57,280 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:25:57,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:25:57,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112463723] [2021-10-21 19:25:57,281 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:25:57,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:25:57,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:25:57,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:25:57,283 INFO L87 Difference]: Start difference. First operand 452 states and 631 transitions. cyclomatic complexity: 182 Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:25:57,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:25:57,558 INFO L93 Difference]: Finished difference Result 1322 states and 1805 transitions. [2021-10-21 19:25:57,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:25:57,559 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1322 states and 1805 transitions. [2021-10-21 19:25:57,574 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 851 [2021-10-21 19:25:57,587 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1322 states to 1322 states and 1805 transitions. [2021-10-21 19:25:57,587 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1322 [2021-10-21 19:25:57,589 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1322 [2021-10-21 19:25:57,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1322 states and 1805 transitions. [2021-10-21 19:25:57,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:25:57,594 INFO L681 BuchiCegarLoop]: Abstraction has 1322 states and 1805 transitions. [2021-10-21 19:25:57,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1322 states and 1805 transitions. [2021-10-21 19:25:57,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1322 to 897. [2021-10-21 19:25:57,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 897 states, 897 states have (on average 1.3612040133779264) internal successors, (1221), 896 states have internal predecessors, (1221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:25:57,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1221 transitions. [2021-10-21 19:25:57,627 INFO L704 BuchiCegarLoop]: Abstraction has 897 states and 1221 transitions. [2021-10-21 19:25:57,628 INFO L587 BuchiCegarLoop]: Abstraction has 897 states and 1221 transitions. [2021-10-21 19:25:57,628 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-21 19:25:57,628 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 897 states and 1221 transitions. [2021-10-21 19:25:57,635 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 630 [2021-10-21 19:25:57,636 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:25:57,636 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:25:57,639 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:25:57,639 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:25:57,639 INFO L791 eck$LassoCheckResult]: Stem: 3592#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~string20.base, #t~string20.offset := #Ultimate.allocOnStack(13);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(110, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 2 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(102, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(102, #t~string24.base, 2 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 3 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string26.base, #t~string26.offset, 1);call write~init~int(80, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(117, #t~string26.base, 2 + #t~string26.offset, 1);call write~init~int(109, #t~string26.base, 3 + #t~string26.offset, 1);call write~init~int(112, #t~string26.base, 4 + #t~string26.offset, 1);call write~init~int(58, #t~string26.base, 5 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 6 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string28.base, #t~string28.offset, 1);call write~init~int(110, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 2 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 2 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 3 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string32.base, #t~string32.offset, 1);call write~init~int(32, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 2 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string34.base, #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 1 + #t~string34.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(13);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string40.base, #t~string40.offset, 1);call write~init~int(77, #t~string40.base, 1 + #t~string40.offset, 1);call write~init~int(101, #t~string40.base, 2 + #t~string40.offset, 1);call write~init~int(116, #t~string40.base, 3 + #t~string40.offset, 1);call write~init~int(104, #t~string40.base, 4 + #t~string40.offset, 1);call write~init~int(58, #t~string40.base, 5 + #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 6 + #t~string40.offset, 1);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string42.base, #t~string42.offset, 1);call write~init~int(82, #t~string42.base, 1 + #t~string42.offset, 1);call write~init~int(73, #t~string42.base, 2 + #t~string42.offset, 1);call write~init~int(84, #t~string42.base, 3 + #t~string42.offset, 1);call write~init~int(0, #t~string42.base, 4 + #t~string42.offset, 1);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string44.base, #t~string44.offset, 1);call write~init~int(75, #t~string44.base, 1 + #t~string44.offset, 1);call write~init~int(0, #t~string44.base, 2 + #t~string44.offset, 1);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string46.base, #t~string46.offset, 1);call write~init~int(0, #t~string46.base, 1 + #t~string46.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(21);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(30);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(9);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(21);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(30);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(9);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(25);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(30);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(9);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(25);~switchedOnBeforeTS~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 3493#L-1 havoc main_#res;havoc main_#t~ret47, main_~retValue_acc~8, main_~tmp~8;havoc main_~retValue_acc~8;havoc main_~tmp~8; 3494#L685 havoc valid_product_#res;havoc valid_product_~retValue_acc~10;havoc valid_product_~retValue_acc~10;valid_product_~retValue_acc~10 := 1;valid_product_#res := valid_product_~retValue_acc~10; 3565#L693 main_#t~ret47 := valid_product_#res;main_~tmp~8 := main_#t~ret47;havoc main_#t~ret47; 3471#L640 assume 0 != main_~tmp~8; 3472#L613 ~switchedOnBeforeTS~0 := 0; 3489#L59 havoc test_#t~nondet10, test_#t~nondet11, test_#t~nondet12, test_#t~nondet13, test_~splverifierCounter~0, test_~tmp~1, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~1;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 3485#L80-1 [2021-10-21 19:25:57,647 INFO L793 eck$LassoCheckResult]: Loop: 3485#L80-1 assume !false; 3588#L119 assume test_~splverifierCounter~0 < 4; 3593#L120 test_~tmp~1 := test_#t~nondet10;havoc test_#t~nondet10; 3878#L128 assume !(0 != test_~tmp~1); 3572#L128-1 test_~tmp___0~1 := test_#t~nondet11;havoc test_#t~nondet11; 3573#L138 assume !(0 != test_~tmp___0~1); 3887#L138-1 test_~tmp___2~0 := test_#t~nondet12;havoc test_#t~nondet12; 3885#L148 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 3578#L156-1 havoc __utac_acc__Specification5_spec__2_#t~ret7;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~1;havoc isPumpRunning_~retValue_acc~1;isPumpRunning_~retValue_acc~1 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~1; 3567#L349 __utac_acc__Specification5_spec__2_#t~ret7 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret7;havoc __utac_acc__Specification5_spec__2_#t~ret7; 3428#L69 assume !(0 != ~pumpRunning~0); 3429#L195 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret16, processEnvironment_~tmp~4;havoc processEnvironment_~tmp~4; 3531#L279 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret15, processEnvironment__wrappee__methaneQuery_~tmp~3;havoc processEnvironment__wrappee__methaneQuery_~tmp~3; 3450#L253-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret14, processEnvironment__wrappee__highWaterSensor_~tmp~2;havoc processEnvironment__wrappee__highWaterSensor_~tmp~2; 3451#L227-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret35, isHighWaterLevel_~retValue_acc~2, isHighWaterLevel_~tmp~6, isHighWaterLevel_~tmp___0~2;havoc isHighWaterLevel_~retValue_acc~2;havoc isHighWaterLevel_~tmp~6;havoc isHighWaterLevel_~tmp___0~2;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~6;havoc isHighWaterSensorDry_~retValue_acc~6; 3549#L534-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~6 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~6; 3404#L539-3 isHighWaterLevel_#t~ret35 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~6 := isHighWaterLevel_#t~ret35;havoc isHighWaterLevel_#t~ret35; 3405#L398-9 assume 0 != isHighWaterLevel_~tmp~6;isHighWaterLevel_~tmp___0~2 := 0; 3516#L398-11 isHighWaterLevel_~retValue_acc~2 := isHighWaterLevel_~tmp___0~2;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~2; 3587#L404-3 processEnvironment__wrappee__highWaterSensor_#t~ret14 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~2 := processEnvironment__wrappee__highWaterSensor_#t~ret14;havoc processEnvironment__wrappee__highWaterSensor_#t~ret14; 3436#L231-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~2); 3437#L202 havoc __utac_acc__Specification5_spec__3_#t~ret8, __utac_acc__Specification5_spec__3_#t~ret9, __utac_acc__Specification5_spec__3_~tmp~0, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~0;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~5;havoc getWaterLevel_~retValue_acc~5;getWaterLevel_~retValue_acc~5 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~5; 3570#L526 __utac_acc__Specification5_spec__3_#t~ret8 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~0 := __utac_acc__Specification5_spec__3_#t~ret8;havoc __utac_acc__Specification5_spec__3_#t~ret8; 3408#L80 assume 2 != __utac_acc__Specification5_spec__3_~tmp~0;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~1;havoc isPumpRunning_~retValue_acc~1;isPumpRunning_~retValue_acc~1 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~1; 3409#L349-1 __utac_acc__Specification5_spec__3_#t~ret9 := isPumpRunning_#res;__utac_acc__Specification5_spec__3_~tmp___0~0 := __utac_acc__Specification5_spec__3_#t~ret9;havoc __utac_acc__Specification5_spec__3_#t~ret9; 3458#L84 assume !(0 != __utac_acc__Specification5_spec__3_~tmp___0~0); 3485#L80-1 [2021-10-21 19:25:57,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:25:57,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 4 times [2021-10-21 19:25:57,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:25:57,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658543930] [2021-10-21 19:25:57,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:25:57,656 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:25:57,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:25:57,730 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:25:57,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:25:57,801 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:25:57,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:25:57,802 INFO L82 PathProgramCache]: Analyzing trace with hash -212312784, now seen corresponding path program 1 times [2021-10-21 19:25:57,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:25:57,803 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532834195] [2021-10-21 19:25:57,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:25:57,803 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:25:57,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:25:57,815 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:25:57,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:25:57,828 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:25:57,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:25:57,829 INFO L82 PathProgramCache]: Analyzing trace with hash 2116442870, now seen corresponding path program 1 times [2021-10-21 19:25:57,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:25:57,830 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031363731] [2021-10-21 19:25:57,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:25:57,831 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:25:57,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:25:57,888 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:25:57,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:25:57,957 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:27:00,874 WARN L207 SmtUtils]: Spent 1.04 m on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-10-21 19:27:57,166 WARN L207 SmtUtils]: Spent 26.67 s on a formula simplification that was a NOOP. DAG size: 435 [2021-10-21 19:27:57,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.10 07:27:57 BoogieIcfgContainer [2021-10-21 19:27:57,376 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-21 19:27:57,376 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:27:57,376 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:27:57,377 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:27:57,377 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:25:55" (3/4) ... [2021-10-21 19:27:57,380 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-21 19:27:57,450 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829c2ed6-2df1-418b-bbdb-63886958a4be/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 19:27:57,450 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:27:57,451 INFO L168 Benchmark]: Toolchain (without parser) took 124162.02 ms. Allocated memory was 100.7 MB in the beginning and 163.6 MB in the end (delta: 62.9 MB). Free memory was 64.6 MB in the beginning and 120.0 MB in the end (delta: -55.4 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:27:57,452 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 83.9 MB. Free memory was 54.1 MB in the beginning and 54.1 MB in the end (delta: 28.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:27:57,452 INFO L168 Benchmark]: CACSL2BoogieTranslator took 594.98 ms. Allocated memory is still 100.7 MB. Free memory was 64.3 MB in the beginning and 68.1 MB in the end (delta: -3.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:27:57,453 INFO L168 Benchmark]: Boogie Procedure Inliner took 111.10 ms. Allocated memory is still 100.7 MB. Free memory was 68.1 MB in the beginning and 62.4 MB in the end (delta: 5.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-21 19:27:57,454 INFO L168 Benchmark]: Boogie Preprocessor took 120.05 ms. Allocated memory is still 100.7 MB. Free memory was 62.4 MB in the beginning and 58.6 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:27:57,454 INFO L168 Benchmark]: RCFGBuilder took 1510.79 ms. Allocated memory is still 100.7 MB. Free memory was 58.2 MB in the beginning and 47.1 MB in the end (delta: 11.1 MB). Peak memory consumption was 30.3 MB. Max. memory is 16.1 GB. [2021-10-21 19:27:57,455 INFO L168 Benchmark]: BuchiAutomizer took 121733.34 ms. Allocated memory was 100.7 MB in the beginning and 163.6 MB in the end (delta: 62.9 MB). Free memory was 47.1 MB in the beginning and 123.2 MB in the end (delta: -76.1 MB). Peak memory consumption was 86.8 MB. Max. memory is 16.1 GB. [2021-10-21 19:27:57,456 INFO L168 Benchmark]: Witness Printer took 73.83 ms. Allocated memory is still 163.6 MB. Free memory was 123.2 MB in the beginning and 120.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:27:57,460 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 83.9 MB. Free memory was 54.1 MB in the beginning and 54.1 MB in the end (delta: 28.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 594.98 ms. Allocated memory is still 100.7 MB. Free memory was 64.3 MB in the beginning and 68.1 MB in the end (delta: -3.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 111.10 ms. Allocated memory is still 100.7 MB. Free memory was 68.1 MB in the beginning and 62.4 MB in the end (delta: 5.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 120.05 ms. Allocated memory is still 100.7 MB. Free memory was 62.4 MB in the beginning and 58.6 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1510.79 ms. Allocated memory is still 100.7 MB. Free memory was 58.2 MB in the beginning and 47.1 MB in the end (delta: 11.1 MB). Peak memory consumption was 30.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 121733.34 ms. Allocated memory was 100.7 MB in the beginning and 163.6 MB in the end (delta: 62.9 MB). Free memory was 47.1 MB in the beginning and 123.2 MB in the end (delta: -76.1 MB). Peak memory consumption was 86.8 MB. Max. memory is 16.1 GB. * Witness Printer took 73.83 ms. Allocated memory is still 163.6 MB. Free memory was 123.2 MB in the beginning and 120.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 897 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 121.6s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 120.7s. Construction of modules took 0.2s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 116.2ms AutomataMinimizationTime, 3 MinimizatonAttempts, 427 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 897 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 1013 SDtfs, 1421 SDslu, 1323 SDs, 0 SdLazy, 173 SolverSat, 82 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 265.8ms Time LassoAnalysisResults: nont1 unkn0 SFLI3 SFLT0 conc0 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: 118]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=25495} State at position 1 is {NULL=0, NULL=0, NULL=25495, NULL=25516, NULL=25514, NULL=0, NULL=25523, NULL=0, methaneLevelCritical=0, NULL=25510, retValue_acc=1, NULL=0, retValue_acc=0, NULL=25513, NULL=0, tmp___1=0, NULL=0, NULL=25498, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@38ef55df=0, cleanupTimeShifts=4, tmp=0, NULL=25506, waterLevel=1, NULL=0, NULL=0, NULL=25512, \result=1, head=0, pumpRunning=0, retValue_acc=1, NULL=0, tmp=1, NULL=0, \result=1, NULL=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=25518, tmp___0=0, NULL=25502, tmp=1, retValue_acc=1, NULL=25504, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1f247e9c=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@311678bf=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@10895134=78, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1fbc4daf=0, head=0, tmp=0, NULL=0, NULL=0, NULL=25499, NULL=25503, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@16dc1372=0, NULL=0, NULL=0, NULL=25497, retValue_acc=0, NULL=25508, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@70eee172=0, tmp___0=0, NULL=0, NULL=0, NULL=25522, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@749dad90=0, tmp=1, NULL=0, NULL=25520, NULL=25509, switchedOnBeforeTS=0, tmp=0, \result=0, NULL=0, systemActive=1, NULL=25501, \result=1, NULL=0, \result=0, NULL=25519, tmp___0=0, \result=0, NULL=25517, NULL=25521, NULL=25507, NULL=25500, tmp___2=78, splverifierCounter=0, NULL=0, NULL=25505, NULL=25515, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@18276c19=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@44e9d3b0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4af7e8cd=0, NULL=25511, retValue_acc=0, NULL=0, NULL=0, NULL=0, NULL=25496, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2f8203e6=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L53] int switchedOnBeforeTS ; [L185] int pumpRunning = 0; [L186] int systemActive = 1; [L451] int waterLevel = 1; [L452] int methaneLevelCritical = 0; [L554] int cleanupTimeShifts = 4; [L867] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L631] int retValue_acc ; [L632] int tmp ; [L689] int retValue_acc ; [L692] retValue_acc = 1 [L693] return (retValue_acc); [L638] tmp = valid_product() [L640] COND TRUE \read(tmp) [L58] switchedOnBeforeTS = 0 [L109] int splverifierCounter ; [L110] int tmp ; [L111] int tmp___0 ; [L112] int tmp___1 ; [L113] int tmp___2 ; [L116] splverifierCounter = 0 Loop: [L118] COND TRUE 1 [L120] COND TRUE splverifierCounter < 4 [L126] tmp = __VERIFIER_nondet_int() [L128] COND FALSE !(\read(tmp)) [L136] tmp___0 = __VERIFIER_nondet_int() [L138] COND FALSE !(\read(tmp___0)) [L146] tmp___2 = __VERIFIER_nondet_int() [L148] COND TRUE \read(tmp___2) [L446] systemActive = 1 [L345] int retValue_acc ; [L348] retValue_acc = pumpRunning [L349] return (retValue_acc); [L67] switchedOnBeforeTS = isPumpRunning() [L195] COND FALSE !(\read(pumpRunning)) [L202] COND TRUE \read(systemActive) [L276] int tmp ; [L279] COND FALSE !(\read(pumpRunning)) [L250] int tmp ; [L253] COND FALSE !(\read(pumpRunning)) [L224] int tmp ; [L227] COND TRUE ! pumpRunning [L390] int retValue_acc ; [L391] int tmp ; [L392] int tmp___0 ; [L531] int retValue_acc ; [L534] COND TRUE waterLevel < 2 [L535] retValue_acc = 1 [L536] return (retValue_acc); [L396] tmp = isHighWaterSensorDry() [L398] COND TRUE \read(tmp) [L399] tmp___0 = 0 [L403] retValue_acc = tmp___0 [L404] return (retValue_acc); [L229] tmp = isHighWaterLevel() [L231] COND FALSE !(\read(tmp)) [L73] int tmp ; [L74] int tmp___0 ; [L522] int retValue_acc ; [L525] retValue_acc = waterLevel [L526] return (retValue_acc); [L78] tmp = getWaterLevel() [L80] COND TRUE tmp != 2 [L345] int retValue_acc ; [L348] retValue_acc = pumpRunning [L349] return (retValue_acc); [L82] tmp___0 = isPumpRunning() [L84] COND FALSE !(\read(tmp___0)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-21 19:27:57,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829c2ed6-2df1-418b-bbdb-63886958a4be/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...