./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec5_product50.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/product-lines/minepump_spec5_product50.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 9cfe95aaca007f6467395901a9efc89e5ad27f0fc32ae7ae8a1fe4e27a1f35c1 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 23:40:05,969 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 23:40:05,971 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 23:40:06,023 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 23:40:06,024 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 23:40:06,028 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 23:40:06,029 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 23:40:06,033 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 23:40:06,035 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 23:40:06,036 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 23:40:06,037 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 23:40:06,039 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 23:40:06,039 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 23:40:06,045 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 23:40:06,046 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 23:40:06,048 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 23:40:06,049 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 23:40:06,050 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 23:40:06,052 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 23:40:06,053 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 23:40:06,054 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 23:40:06,057 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 23:40:06,057 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 23:40:06,059 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 23:40:06,062 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 23:40:06,063 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 23:40:06,064 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 23:40:06,064 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 23:40:06,066 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 23:40:06,066 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 23:40:06,067 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 23:40:06,067 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 23:40:06,068 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 23:40:06,069 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 23:40:06,070 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 23:40:06,070 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 23:40:06,071 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 23:40:06,072 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 23:40:06,072 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 23:40:06,072 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 23:40:06,073 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 23:40:06,074 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-14 23:40:06,099 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 23:40:06,103 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 23:40:06,103 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 23:40:06,103 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 23:40:06,105 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 23:40:06,105 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 23:40:06,105 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 23:40:06,106 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-14 23:40:06,106 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-14 23:40:06,106 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-14 23:40:06,107 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-14 23:40:06,107 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-14 23:40:06,107 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-14 23:40:06,107 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 23:40:06,108 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 23:40:06,108 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-14 23:40:06,108 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 23:40:06,108 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 23:40:06,108 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 23:40:06,108 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-14 23:40:06,109 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-14 23:40:06,109 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-14 23:40:06,109 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 23:40:06,109 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 23:40:06,110 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-14 23:40:06,110 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 23:40:06,110 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-14 23:40:06,111 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 23:40:06,111 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 23:40:06,111 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 23:40:06,111 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 23:40:06,112 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 23:40:06,112 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-14 23:40:06,112 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9cfe95aaca007f6467395901a9efc89e5ad27f0fc32ae7ae8a1fe4e27a1f35c1 [2021-12-14 23:40:06,299 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 23:40:06,318 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 23:40:06,320 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 23:40:06,322 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 23:40:06,322 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 23:40:06,323 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec5_product50.cil.c [2021-12-14 23:40:06,377 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3b4fbe91/11effb24279e441c88cc4955a07a20cf/FLAG8a206f234 [2021-12-14 23:40:06,818 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 23:40:06,818 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_product50.cil.c [2021-12-14 23:40:06,839 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3b4fbe91/11effb24279e441c88cc4955a07a20cf/FLAG8a206f234 [2021-12-14 23:40:06,850 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3b4fbe91/11effb24279e441c88cc4955a07a20cf [2021-12-14 23:40:06,852 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 23:40:06,853 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 23:40:06,854 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 23:40:06,854 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 23:40:06,857 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 23:40:06,858 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:40:06" (1/1) ... [2021-12-14 23:40:06,858 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ee565cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:06, skipping insertion in model container [2021-12-14 23:40:06,859 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:40:06" (1/1) ... [2021-12-14 23:40:06,864 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 23:40:06,895 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 23:40:07,028 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_product50.cil.c[1605,1618] [2021-12-14 23:40:07,112 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 23:40:07,125 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 23:40:07,142 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_product50.cil.c[1605,1618] [2021-12-14 23:40:07,221 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 23:40:07,242 INFO L208 MainTranslator]: Completed translation [2021-12-14 23:40:07,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:07 WrapperNode [2021-12-14 23:40:07,245 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 23:40:07,246 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 23:40:07,246 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 23:40:07,247 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 23:40:07,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:07" (1/1) ... [2021-12-14 23:40:07,265 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:07" (1/1) ... [2021-12-14 23:40:07,297 INFO L137 Inliner]: procedures = 58, calls = 158, calls flagged for inlining = 55, calls inlined = 85, statements flattened = 642 [2021-12-14 23:40:07,298 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 23:40:07,298 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 23:40:07,298 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 23:40:07,298 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 23:40:07,307 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:07" (1/1) ... [2021-12-14 23:40:07,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:07" (1/1) ... [2021-12-14 23:40:07,311 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:07" (1/1) ... [2021-12-14 23:40:07,311 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:07" (1/1) ... [2021-12-14 23:40:07,321 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:07" (1/1) ... [2021-12-14 23:40:07,326 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:07" (1/1) ... [2021-12-14 23:40:07,336 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:07" (1/1) ... [2021-12-14 23:40:07,354 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 23:40:07,355 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 23:40:07,355 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 23:40:07,356 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 23:40:07,356 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:07" (1/1) ... [2021-12-14 23:40:07,368 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:40:07,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:40:07,393 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:40:07,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-12-14 23:40:07,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 23:40:07,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 23:40:07,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 23:40:07,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 23:40:07,479 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 23:40:07,480 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 23:40:07,876 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 23:40:07,884 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 23:40:07,887 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-14 23:40:07,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:40:07 BoogieIcfgContainer [2021-12-14 23:40:07,889 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 23:40:07,891 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-14 23:40:07,891 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-14 23:40:07,894 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-14 23:40:07,895 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-14 23:40:07,895 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 14.12 11:40:06" (1/3) ... [2021-12-14 23:40:07,896 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4c8715ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.12 11:40:07, skipping insertion in model container [2021-12-14 23:40:07,896 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-14 23:40:07,896 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:07" (2/3) ... [2021-12-14 23:40:07,897 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4c8715ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.12 11:40:07, skipping insertion in model container [2021-12-14 23:40:07,897 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-14 23:40:07,897 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:40:07" (3/3) ... [2021-12-14 23:40:07,898 INFO L388 chiAutomizerObserver]: Analyzing ICFG minepump_spec5_product50.cil.c [2021-12-14 23:40:07,937 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-14 23:40:07,937 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-14 23:40:07,937 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-14 23:40:07,938 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-14 23:40:07,938 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-14 23:40:07,938 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-14 23:40:07,938 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-14 23:40:07,938 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-14 23:40:07,958 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 173 states, 172 states have (on average 1.372093023255814) internal successors, (236), 172 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:40:07,985 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 111 [2021-12-14 23:40:07,986 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:40:07,986 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:40:07,991 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:40:07,992 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] [2021-12-14 23:40:07,992 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-14 23:40:07,993 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 173 states, 172 states have (on average 1.372093023255814) internal successors, (236), 172 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:40:08,000 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 111 [2021-12-14 23:40:08,001 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:40:08,001 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:40:08,002 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:40:08,002 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] [2021-12-14 23:40:08,007 INFO L791 eck$LassoCheckResult]: Stem: 156#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(13, 4);call #Ultimate.allocInit(3, 5);call write~init~int(79, 5, 0, 1);call write~init~int(110, 5, 1, 1);call write~init~int(0, 5, 2, 1);call #Ultimate.allocInit(4, 6);call write~init~int(79, 6, 0, 1);call write~init~int(102, 6, 1, 1);call write~init~int(102, 6, 2, 1);call write~init~int(0, 6, 3, 1);call #Ultimate.allocInit(7, 7);call write~init~int(44, 7, 0, 1);call write~init~int(80, 7, 1, 1);call write~init~int(117, 7, 2, 1);call write~init~int(109, 7, 3, 1);call write~init~int(112, 7, 4, 1);call write~init~int(58, 7, 5, 1);call write~init~int(0, 7, 6, 1);call #Ultimate.allocInit(3, 8);call write~init~int(79, 8, 0, 1);call write~init~int(110, 8, 1, 1);call write~init~int(0, 8, 2, 1);call #Ultimate.allocInit(4, 9);call write~init~int(79, 9, 0, 1);call write~init~int(102, 9, 1, 1);call write~init~int(102, 9, 2, 1);call write~init~int(0, 9, 3, 1);call #Ultimate.allocInit(3, 10);call write~init~int(41, 10, 0, 1);call write~init~int(32, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(2, 11);call write~init~int(10, 11, 0, 1);call write~init~int(0, 11, 1, 1);call #Ultimate.allocInit(13, 12);call #Ultimate.allocInit(7, 13);call write~init~int(44, 13, 0, 1);call write~init~int(77, 13, 1, 1);call write~init~int(101, 13, 2, 1);call write~init~int(116, 13, 3, 1);call write~init~int(104, 13, 4, 1);call write~init~int(58, 13, 5, 1);call write~init~int(0, 13, 6, 1);call #Ultimate.allocInit(5, 14);call write~init~int(67, 14, 0, 1);call write~init~int(82, 14, 1, 1);call write~init~int(73, 14, 2, 1);call write~init~int(84, 14, 3, 1);call write~init~int(0, 14, 4, 1);call #Ultimate.allocInit(3, 15);call write~init~int(79, 15, 0, 1);call write~init~int(75, 15, 1, 1);call write~init~int(0, 15, 2, 1);call #Ultimate.allocInit(2, 16);call write~init~int(41, 16, 0, 1);call write~init~int(0, 16, 1, 1);call #Ultimate.allocInit(30, 17);call #Ultimate.allocInit(9, 18);call #Ultimate.allocInit(21, 19);call #Ultimate.allocInit(30, 20);call #Ultimate.allocInit(9, 21);call #Ultimate.allocInit(21, 22);call #Ultimate.allocInit(30, 23);call #Ultimate.allocInit(9, 24);call #Ultimate.allocInit(25, 25);call #Ultimate.allocInit(30, 26);call #Ultimate.allocInit(9, 27);call #Ultimate.allocInit(25, 28);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~switchedOnBeforeTS~0 := 0;~cleanupTimeShifts~0 := 4; 54#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret53#1, main_~retValue_acc~13#1, main_~tmp~9#1;havoc main_~retValue_acc~13#1;havoc main_~tmp~9#1;assume { :begin_inline_select_helpers } true; 44#L894true assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 162#L887true assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~12#1;havoc valid_product_~retValue_acc~12#1;valid_product_~retValue_acc~12#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~12#1; 131#L902true main_#t~ret53#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~9#1 := main_#t~ret53#1;havoc main_#t~ret53#1; 128#L990true assume 0 != main_~tmp~9#1;assume { :begin_inline_setup } true; 9#L966true assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline___utac_acc__Specification5_spec__1 } true;~switchedOnBeforeTS~0 := 0; 69#L826true assume { :end_inline___utac_acc__Specification5_spec__1 } true;assume { :begin_inline_test } true;havoc test_#t~nondet17#1, test_#t~nondet18#1, test_#t~nondet19#1, test_#t~nondet20#1, test_~splverifierCounter~0#1, test_~tmp~4#1, test_~tmp___0~2#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~4#1;havoc test_~tmp___0~2#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 3#L293-2true [2021-12-14 23:40:08,008 INFO L793 eck$LassoCheckResult]: Loop: 3#L293-2true assume !false; 145#L294true assume test_~splverifierCounter~0#1 < 4; 10#L295true test_~tmp~4#1 := test_#t~nondet17#1;havoc test_#t~nondet17#1; 163#L303true assume !(0 != test_~tmp~4#1); 126#L303-2true test_~tmp___0~2#1 := test_#t~nondet18#1;havoc test_#t~nondet18#1; 34#L313true assume !(0 != test_~tmp___0~2#1); 135#L313-2true test_~tmp___2~0#1 := test_#t~nondet19#1;havoc test_#t~nondet19#1; 8#L323true assume !(0 != test_~tmp___2~0#1);test_~tmp___1~0#1 := test_#t~nondet20#1;havoc test_#t~nondet20#1; 16#L331true assume 0 != test_~tmp___1~0#1; 161#L331-2true assume { :begin_inline_timeShift } true;assume { :begin_inline___utac_acc__Specification5_spec__2 } true;havoc __utac_acc__Specification5_spec__2_#t~ret49#1;assume { :begin_inline_isPumpRunning } true;havoc isPumpRunning_#res#1;havoc isPumpRunning_~retValue_acc~1#1;havoc isPumpRunning_~retValue_acc~1#1;isPumpRunning_~retValue_acc~1#1 := ~pumpRunning~0;isPumpRunning_#res#1 := isPumpRunning_~retValue_acc~1#1; 81#L193true __utac_acc__Specification5_spec__2_#t~ret49#1 := isPumpRunning_#res#1;assume { :end_inline_isPumpRunning } true;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret49#1;havoc __utac_acc__Specification5_spec__2_#t~ret49#1; 23#L836true assume { :end_inline___utac_acc__Specification5_spec__2 } true; 123#L82true assume !(0 != ~pumpRunning~0); 169#L82-2true assume !(0 != ~systemActive~0); 72#L89-1true assume { :begin_inline___utac_acc__Specification5_spec__3 } true;havoc __utac_acc__Specification5_spec__3_#t~ret50#1, __utac_acc__Specification5_spec__3_#t~ret51#1, __utac_acc__Specification5_spec__3_~tmp~8#1, __utac_acc__Specification5_spec__3_~tmp___0~3#1;havoc __utac_acc__Specification5_spec__3_~tmp~8#1;havoc __utac_acc__Specification5_spec__3_~tmp___0~3#1;assume { :begin_inline_getWaterLevel } true;havoc getWaterLevel_#res#1;havoc getWaterLevel_~retValue_acc~5#1;havoc getWaterLevel_~retValue_acc~5#1;getWaterLevel_~retValue_acc~5#1 := ~waterLevel~0;getWaterLevel_#res#1 := getWaterLevel_~retValue_acc~5#1; 152#L426true __utac_acc__Specification5_spec__3_#t~ret50#1 := getWaterLevel_#res#1;assume { :end_inline_getWaterLevel } true;__utac_acc__Specification5_spec__3_~tmp~8#1 := __utac_acc__Specification5_spec__3_#t~ret50#1;havoc __utac_acc__Specification5_spec__3_#t~ret50#1; 138#L847true assume !(2 != __utac_acc__Specification5_spec__3_~tmp~8#1); 49#L847-1true assume { :end_inline___utac_acc__Specification5_spec__3 } true; 143#L99true assume { :end_inline_timeShift } true; 3#L293-2true [2021-12-14 23:40:08,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:40:08,013 INFO L85 PathProgramCache]: Analyzing trace with hash 87859946, now seen corresponding path program 1 times [2021-12-14 23:40:08,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:40:08,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371390487] [2021-12-14 23:40:08,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:40:08,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:40:08,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:40:08,157 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:40:08,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:40:08,209 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:40:08,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:40:08,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1334625068, now seen corresponding path program 1 times [2021-12-14 23:40:08,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:40:08,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873271800] [2021-12-14 23:40:08,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:40:08,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:40:08,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:40:08,240 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:40:08,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:40:08,249 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:40:08,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:40:08,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1530593885, now seen corresponding path program 1 times [2021-12-14 23:40:08,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:40:08,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221601668] [2021-12-14 23:40:08,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:40:08,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:40:08,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:08,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:40:08,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:40:08,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221601668] [2021-12-14 23:40:08,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221601668] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 23:40:08,420 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 23:40:08,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 23:40:08,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132638687] [2021-12-14 23:40:08,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 23:40:08,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 23:40:08,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 23:40:08,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-14 23:40:08,644 INFO L87 Difference]: Start difference. First operand has 173 states, 172 states have (on average 1.372093023255814) internal successors, (236), 172 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 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) [2021-12-14 23:40:08,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 23:40:08,744 INFO L93 Difference]: Finished difference Result 170 states and 222 transitions. [2021-12-14 23:40:08,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 23:40:08,751 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 170 states and 222 transitions. [2021-12-14 23:40:08,761 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 107 [2021-12-14 23:40:08,767 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 170 states to 160 states and 212 transitions. [2021-12-14 23:40:08,768 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 160 [2021-12-14 23:40:08,771 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 160 [2021-12-14 23:40:08,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 160 states and 212 transitions. [2021-12-14 23:40:08,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 23:40:08,773 INFO L681 BuchiCegarLoop]: Abstraction has 160 states and 212 transitions. [2021-12-14 23:40:08,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states and 212 transitions. [2021-12-14 23:40:08,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2021-12-14 23:40:08,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 160 states have (on average 1.325) internal successors, (212), 159 states have internal predecessors, (212), 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) [2021-12-14 23:40:08,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 212 transitions. [2021-12-14 23:40:08,804 INFO L704 BuchiCegarLoop]: Abstraction has 160 states and 212 transitions. [2021-12-14 23:40:08,804 INFO L587 BuchiCegarLoop]: Abstraction has 160 states and 212 transitions. [2021-12-14 23:40:08,805 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-14 23:40:08,805 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 160 states and 212 transitions. [2021-12-14 23:40:08,808 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 107 [2021-12-14 23:40:08,808 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:40:08,808 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:40:08,810 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:40:08,810 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] [2021-12-14 23:40:08,810 INFO L791 eck$LassoCheckResult]: Stem: 520#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(13, 4);call #Ultimate.allocInit(3, 5);call write~init~int(79, 5, 0, 1);call write~init~int(110, 5, 1, 1);call write~init~int(0, 5, 2, 1);call #Ultimate.allocInit(4, 6);call write~init~int(79, 6, 0, 1);call write~init~int(102, 6, 1, 1);call write~init~int(102, 6, 2, 1);call write~init~int(0, 6, 3, 1);call #Ultimate.allocInit(7, 7);call write~init~int(44, 7, 0, 1);call write~init~int(80, 7, 1, 1);call write~init~int(117, 7, 2, 1);call write~init~int(109, 7, 3, 1);call write~init~int(112, 7, 4, 1);call write~init~int(58, 7, 5, 1);call write~init~int(0, 7, 6, 1);call #Ultimate.allocInit(3, 8);call write~init~int(79, 8, 0, 1);call write~init~int(110, 8, 1, 1);call write~init~int(0, 8, 2, 1);call #Ultimate.allocInit(4, 9);call write~init~int(79, 9, 0, 1);call write~init~int(102, 9, 1, 1);call write~init~int(102, 9, 2, 1);call write~init~int(0, 9, 3, 1);call #Ultimate.allocInit(3, 10);call write~init~int(41, 10, 0, 1);call write~init~int(32, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(2, 11);call write~init~int(10, 11, 0, 1);call write~init~int(0, 11, 1, 1);call #Ultimate.allocInit(13, 12);call #Ultimate.allocInit(7, 13);call write~init~int(44, 13, 0, 1);call write~init~int(77, 13, 1, 1);call write~init~int(101, 13, 2, 1);call write~init~int(116, 13, 3, 1);call write~init~int(104, 13, 4, 1);call write~init~int(58, 13, 5, 1);call write~init~int(0, 13, 6, 1);call #Ultimate.allocInit(5, 14);call write~init~int(67, 14, 0, 1);call write~init~int(82, 14, 1, 1);call write~init~int(73, 14, 2, 1);call write~init~int(84, 14, 3, 1);call write~init~int(0, 14, 4, 1);call #Ultimate.allocInit(3, 15);call write~init~int(79, 15, 0, 1);call write~init~int(75, 15, 1, 1);call write~init~int(0, 15, 2, 1);call #Ultimate.allocInit(2, 16);call write~init~int(41, 16, 0, 1);call write~init~int(0, 16, 1, 1);call #Ultimate.allocInit(30, 17);call #Ultimate.allocInit(9, 18);call #Ultimate.allocInit(21, 19);call #Ultimate.allocInit(30, 20);call #Ultimate.allocInit(9, 21);call #Ultimate.allocInit(21, 22);call #Ultimate.allocInit(30, 23);call #Ultimate.allocInit(9, 24);call #Ultimate.allocInit(25, 25);call #Ultimate.allocInit(30, 26);call #Ultimate.allocInit(9, 27);call #Ultimate.allocInit(25, 28);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~switchedOnBeforeTS~0 := 0;~cleanupTimeShifts~0 := 4; 446#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret53#1, main_~retValue_acc~13#1, main_~tmp~9#1;havoc main_~retValue_acc~13#1;havoc main_~tmp~9#1;assume { :begin_inline_select_helpers } true; 432#L894 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 433#L887 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~12#1;havoc valid_product_~retValue_acc~12#1;valid_product_~retValue_acc~12#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~12#1; 512#L902 main_#t~ret53#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~9#1 := main_#t~ret53#1;havoc main_#t~ret53#1; 510#L990 assume 0 != main_~tmp~9#1;assume { :begin_inline_setup } true; 371#L966 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline___utac_acc__Specification5_spec__1 } true;~switchedOnBeforeTS~0 := 0; 372#L826 assume { :end_inline___utac_acc__Specification5_spec__1 } true;assume { :begin_inline_test } true;havoc test_#t~nondet17#1, test_#t~nondet18#1, test_#t~nondet19#1, test_#t~nondet20#1, test_~splverifierCounter~0#1, test_~tmp~4#1, test_~tmp___0~2#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~4#1;havoc test_~tmp___0~2#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 363#L293-2 [2021-12-14 23:40:08,810 INFO L793 eck$LassoCheckResult]: Loop: 363#L293-2 assume !false; 364#L294 assume test_~splverifierCounter~0#1 < 4; 375#L295 test_~tmp~4#1 := test_#t~nondet17#1;havoc test_#t~nondet17#1; 376#L303 assume !(0 != test_~tmp~4#1); 495#L303-2 test_~tmp___0~2#1 := test_#t~nondet18#1;havoc test_#t~nondet18#1; 417#L313 assume !(0 != test_~tmp___0~2#1); 419#L313-2 test_~tmp___2~0#1 := test_#t~nondet19#1;havoc test_#t~nondet19#1; 369#L323 assume !(0 != test_~tmp___2~0#1);test_~tmp___1~0#1 := test_#t~nondet20#1;havoc test_#t~nondet20#1; 370#L331 assume 0 != test_~tmp___1~0#1; 366#L331-2 assume { :begin_inline_timeShift } true;assume { :begin_inline___utac_acc__Specification5_spec__2 } true;havoc __utac_acc__Specification5_spec__2_#t~ret49#1;assume { :begin_inline_isPumpRunning } true;havoc isPumpRunning_#res#1;havoc isPumpRunning_~retValue_acc~1#1;havoc isPumpRunning_~retValue_acc~1#1;isPumpRunning_~retValue_acc~1#1 := ~pumpRunning~0;isPumpRunning_#res#1 := isPumpRunning_~retValue_acc~1#1; 473#L193 __utac_acc__Specification5_spec__2_#t~ret49#1 := isPumpRunning_#res#1;assume { :end_inline_isPumpRunning } true;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret49#1;havoc __utac_acc__Specification5_spec__2_#t~ret49#1; 399#L836 assume { :end_inline___utac_acc__Specification5_spec__2 } true; 400#L82 assume !(0 != ~pumpRunning~0); 505#L82-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret5#1, processEnvironment_~tmp~1#1;havoc processEnvironment_~tmp~1#1; 470#L140 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__highWaterSensor } true;havoc processEnvironment__wrappee__highWaterSensor_#t~ret4#1, processEnvironment__wrappee__highWaterSensor_~tmp~0#1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0#1; 448#L114-2 assume !(0 == ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__base } true; 373#L106-3 assume { :end_inline_processEnvironment__wrappee__base } true; 374#L114-3 assume { :end_inline_processEnvironment__wrappee__highWaterSensor } true; 452#L140-1 assume { :end_inline_processEnvironment } true; 453#L89-1 assume { :begin_inline___utac_acc__Specification5_spec__3 } true;havoc __utac_acc__Specification5_spec__3_#t~ret50#1, __utac_acc__Specification5_spec__3_#t~ret51#1, __utac_acc__Specification5_spec__3_~tmp~8#1, __utac_acc__Specification5_spec__3_~tmp___0~3#1;havoc __utac_acc__Specification5_spec__3_~tmp~8#1;havoc __utac_acc__Specification5_spec__3_~tmp___0~3#1;assume { :begin_inline_getWaterLevel } true;havoc getWaterLevel_#res#1;havoc getWaterLevel_~retValue_acc~5#1;havoc getWaterLevel_~retValue_acc~5#1;getWaterLevel_~retValue_acc~5#1 := ~waterLevel~0;getWaterLevel_#res#1 := getWaterLevel_~retValue_acc~5#1; 460#L426 __utac_acc__Specification5_spec__3_#t~ret50#1 := getWaterLevel_#res#1;assume { :end_inline_getWaterLevel } true;__utac_acc__Specification5_spec__3_~tmp~8#1 := __utac_acc__Specification5_spec__3_#t~ret50#1;havoc __utac_acc__Specification5_spec__3_#t~ret50#1; 515#L847 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~8#1); 398#L847-1 assume { :end_inline___utac_acc__Specification5_spec__3 } true; 437#L99 assume { :end_inline_timeShift } true; 363#L293-2 [2021-12-14 23:40:08,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:40:08,811 INFO L85 PathProgramCache]: Analyzing trace with hash 87859946, now seen corresponding path program 2 times [2021-12-14 23:40:08,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:40:08,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101303030] [2021-12-14 23:40:08,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:40:08,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:40:08,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:40:08,839 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:40:08,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:40:08,859 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:40:08,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:40:08,862 INFO L85 PathProgramCache]: Analyzing trace with hash 332748623, now seen corresponding path program 1 times [2021-12-14 23:40:08,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:40:08,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095848730] [2021-12-14 23:40:08,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:40:08,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:40:08,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:08,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:40:08,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:40:08,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095848730] [2021-12-14 23:40:08,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095848730] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 23:40:08,890 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 23:40:08,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 23:40:08,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991016414] [2021-12-14 23:40:08,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 23:40:08,891 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-14 23:40:08,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 23:40:08,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 23:40:08,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 23:40:08,893 INFO L87 Difference]: Start difference. First operand 160 states and 212 transitions. cyclomatic complexity: 54 Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 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) [2021-12-14 23:40:08,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 23:40:08,975 INFO L93 Difference]: Finished difference Result 225 states and 287 transitions. [2021-12-14 23:40:08,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 23:40:08,976 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 225 states and 287 transitions. [2021-12-14 23:40:08,978 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 156 [2021-12-14 23:40:08,982 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 225 states to 225 states and 287 transitions. [2021-12-14 23:40:08,982 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 225 [2021-12-14 23:40:08,983 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 225 [2021-12-14 23:40:08,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 225 states and 287 transitions. [2021-12-14 23:40:08,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 23:40:08,989 INFO L681 BuchiCegarLoop]: Abstraction has 225 states and 287 transitions. [2021-12-14 23:40:08,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states and 287 transitions. [2021-12-14 23:40:09,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2021-12-14 23:40:09,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 225 states have (on average 1.2755555555555556) internal successors, (287), 224 states have internal predecessors, (287), 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) [2021-12-14 23:40:09,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 287 transitions. [2021-12-14 23:40:09,012 INFO L704 BuchiCegarLoop]: Abstraction has 225 states and 287 transitions. [2021-12-14 23:40:09,012 INFO L587 BuchiCegarLoop]: Abstraction has 225 states and 287 transitions. [2021-12-14 23:40:09,012 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-14 23:40:09,013 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 225 states and 287 transitions. [2021-12-14 23:40:09,015 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 156 [2021-12-14 23:40:09,015 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:40:09,016 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:40:09,018 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:40:09,018 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, 1, 1, 1, 1] [2021-12-14 23:40:09,018 INFO L791 eck$LassoCheckResult]: Stem: 920#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(13, 4);call #Ultimate.allocInit(3, 5);call write~init~int(79, 5, 0, 1);call write~init~int(110, 5, 1, 1);call write~init~int(0, 5, 2, 1);call #Ultimate.allocInit(4, 6);call write~init~int(79, 6, 0, 1);call write~init~int(102, 6, 1, 1);call write~init~int(102, 6, 2, 1);call write~init~int(0, 6, 3, 1);call #Ultimate.allocInit(7, 7);call write~init~int(44, 7, 0, 1);call write~init~int(80, 7, 1, 1);call write~init~int(117, 7, 2, 1);call write~init~int(109, 7, 3, 1);call write~init~int(112, 7, 4, 1);call write~init~int(58, 7, 5, 1);call write~init~int(0, 7, 6, 1);call #Ultimate.allocInit(3, 8);call write~init~int(79, 8, 0, 1);call write~init~int(110, 8, 1, 1);call write~init~int(0, 8, 2, 1);call #Ultimate.allocInit(4, 9);call write~init~int(79, 9, 0, 1);call write~init~int(102, 9, 1, 1);call write~init~int(102, 9, 2, 1);call write~init~int(0, 9, 3, 1);call #Ultimate.allocInit(3, 10);call write~init~int(41, 10, 0, 1);call write~init~int(32, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(2, 11);call write~init~int(10, 11, 0, 1);call write~init~int(0, 11, 1, 1);call #Ultimate.allocInit(13, 12);call #Ultimate.allocInit(7, 13);call write~init~int(44, 13, 0, 1);call write~init~int(77, 13, 1, 1);call write~init~int(101, 13, 2, 1);call write~init~int(116, 13, 3, 1);call write~init~int(104, 13, 4, 1);call write~init~int(58, 13, 5, 1);call write~init~int(0, 13, 6, 1);call #Ultimate.allocInit(5, 14);call write~init~int(67, 14, 0, 1);call write~init~int(82, 14, 1, 1);call write~init~int(73, 14, 2, 1);call write~init~int(84, 14, 3, 1);call write~init~int(0, 14, 4, 1);call #Ultimate.allocInit(3, 15);call write~init~int(79, 15, 0, 1);call write~init~int(75, 15, 1, 1);call write~init~int(0, 15, 2, 1);call #Ultimate.allocInit(2, 16);call write~init~int(41, 16, 0, 1);call write~init~int(0, 16, 1, 1);call #Ultimate.allocInit(30, 17);call #Ultimate.allocInit(9, 18);call #Ultimate.allocInit(21, 19);call #Ultimate.allocInit(30, 20);call #Ultimate.allocInit(9, 21);call #Ultimate.allocInit(21, 22);call #Ultimate.allocInit(30, 23);call #Ultimate.allocInit(9, 24);call #Ultimate.allocInit(25, 25);call #Ultimate.allocInit(30, 26);call #Ultimate.allocInit(9, 27);call #Ultimate.allocInit(25, 28);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~switchedOnBeforeTS~0 := 0;~cleanupTimeShifts~0 := 4; 833#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret53#1, main_~retValue_acc~13#1, main_~tmp~9#1;havoc main_~retValue_acc~13#1;havoc main_~tmp~9#1;assume { :begin_inline_select_helpers } true; 820#L894 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 821#L887 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~12#1;havoc valid_product_~retValue_acc~12#1;valid_product_~retValue_acc~12#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~12#1; 908#L902 main_#t~ret53#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~9#1 := main_#t~ret53#1;havoc main_#t~ret53#1; 905#L990 assume 0 != main_~tmp~9#1;assume { :begin_inline_setup } true; 762#L966 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline___utac_acc__Specification5_spec__1 } true;~switchedOnBeforeTS~0 := 0; 763#L826 assume { :end_inline___utac_acc__Specification5_spec__1 } true;assume { :begin_inline_test } true;havoc test_#t~nondet17#1, test_#t~nondet18#1, test_#t~nondet19#1, test_#t~nondet20#1, test_~splverifierCounter~0#1, test_~tmp~4#1, test_~tmp___0~2#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~4#1;havoc test_~tmp___0~2#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 850#L293-2 [2021-12-14 23:40:09,019 INFO L793 eck$LassoCheckResult]: Loop: 850#L293-2 assume !false; 952#L294 assume test_~splverifierCounter~0#1 < 4; 950#L295 test_~tmp~4#1 := test_#t~nondet17#1;havoc test_#t~nondet17#1; 944#L303 assume !(0 != test_~tmp~4#1); 941#L303-2 test_~tmp___0~2#1 := test_#t~nondet18#1;havoc test_#t~nondet18#1; 937#L313 assume !(0 != test_~tmp___0~2#1); 910#L313-2 test_~tmp___2~0#1 := test_#t~nondet19#1;havoc test_#t~nondet19#1; 760#L323 assume 0 != test_~tmp___2~0#1;assume { :begin_inline_startSystem } true;~systemActive~0 := 1; 756#L276 assume { :end_inline_startSystem } true; 757#L331-2 assume { :begin_inline_timeShift } true;assume { :begin_inline___utac_acc__Specification5_spec__2 } true;havoc __utac_acc__Specification5_spec__2_#t~ret49#1;assume { :begin_inline_isPumpRunning } true;havoc isPumpRunning_#res#1;havoc isPumpRunning_~retValue_acc~1#1;havoc isPumpRunning_~retValue_acc~1#1;isPumpRunning_~retValue_acc~1#1 := ~pumpRunning~0;isPumpRunning_#res#1 := isPumpRunning_~retValue_acc~1#1; 863#L193 __utac_acc__Specification5_spec__2_#t~ret49#1 := isPumpRunning_#res#1;assume { :end_inline_isPumpRunning } true;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret49#1;havoc __utac_acc__Specification5_spec__2_#t~ret49#1; 785#L836 assume { :end_inline___utac_acc__Specification5_spec__2 } true; 786#L82 assume !(0 != ~pumpRunning~0); 900#L82-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret5#1, processEnvironment_~tmp~1#1;havoc processEnvironment_~tmp~1#1; 860#L140 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__highWaterSensor } true;havoc processEnvironment__wrappee__highWaterSensor_#t~ret4#1, processEnvironment__wrappee__highWaterSensor_~tmp~0#1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0#1; 835#L114-2 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret15#1, isHighWaterLevel_~retValue_acc~2#1, isHighWaterLevel_~tmp~2#1, isHighWaterLevel_~tmp___0~0#1;havoc isHighWaterLevel_~retValue_acc~2#1;havoc isHighWaterLevel_~tmp~2#1;havoc isHighWaterLevel_~tmp___0~0#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~6#1;havoc isHighWaterSensorDry_~retValue_acc~6#1; 836#L434-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~6#1 := 1;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~6#1; 839#L439-1 isHighWaterLevel_#t~ret15#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~2#1 := isHighWaterLevel_#t~ret15#1;havoc isHighWaterLevel_#t~ret15#1; 840#L242-3 assume 0 != isHighWaterLevel_~tmp~2#1;isHighWaterLevel_~tmp___0~0#1 := 0; 837#L242-5 isHighWaterLevel_~retValue_acc~2#1 := isHighWaterLevel_~tmp___0~0#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~2#1; 838#L248-1 processEnvironment__wrappee__highWaterSensor_#t~ret4#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment__wrappee__highWaterSensor_~tmp~0#1 := processEnvironment__wrappee__highWaterSensor_#t~ret4#1;havoc processEnvironment__wrappee__highWaterSensor_#t~ret4#1; 886#L118-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 855#L106-2 assume { :end_inline_processEnvironment__wrappee__base } true; 856#L114-3 assume { :end_inline_processEnvironment__wrappee__highWaterSensor } true; 921#L140-1 assume { :end_inline_processEnvironment } true; 962#L89-1 assume { :begin_inline___utac_acc__Specification5_spec__3 } true;havoc __utac_acc__Specification5_spec__3_#t~ret50#1, __utac_acc__Specification5_spec__3_#t~ret51#1, __utac_acc__Specification5_spec__3_~tmp~8#1, __utac_acc__Specification5_spec__3_~tmp___0~3#1;havoc __utac_acc__Specification5_spec__3_~tmp~8#1;havoc __utac_acc__Specification5_spec__3_~tmp___0~3#1;assume { :begin_inline_getWaterLevel } true;havoc getWaterLevel_#res#1;havoc getWaterLevel_~retValue_acc~5#1;havoc getWaterLevel_~retValue_acc~5#1;getWaterLevel_~retValue_acc~5#1 := ~waterLevel~0;getWaterLevel_#res#1 := getWaterLevel_~retValue_acc~5#1; 961#L426 __utac_acc__Specification5_spec__3_#t~ret50#1 := getWaterLevel_#res#1;assume { :end_inline_getWaterLevel } true;__utac_acc__Specification5_spec__3_~tmp~8#1 := __utac_acc__Specification5_spec__3_#t~ret50#1;havoc __utac_acc__Specification5_spec__3_#t~ret50#1; 957#L847 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~8#1); 956#L847-1 assume { :end_inline___utac_acc__Specification5_spec__3 } true; 955#L99 assume { :end_inline_timeShift } true; 850#L293-2 [2021-12-14 23:40:09,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:40:09,020 INFO L85 PathProgramCache]: Analyzing trace with hash 87859946, now seen corresponding path program 3 times [2021-12-14 23:40:09,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:40:09,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163440390] [2021-12-14 23:40:09,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:40:09,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:40:09,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:40:09,036 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:40:09,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:40:09,056 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:40:09,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:40:09,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1073249320, now seen corresponding path program 1 times [2021-12-14 23:40:09,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:40:09,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046277169] [2021-12-14 23:40:09,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:40:09,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:40:09,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:09,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:40:09,104 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:40:09,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046277169] [2021-12-14 23:40:09,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046277169] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 23:40:09,104 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 23:40:09,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 23:40:09,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867017393] [2021-12-14 23:40:09,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 23:40:09,105 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-14 23:40:09,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 23:40:09,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 23:40:09,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 23:40:09,106 INFO L87 Difference]: Start difference. First operand 225 states and 287 transitions. cyclomatic complexity: 64 Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 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) [2021-12-14 23:40:09,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 23:40:09,236 INFO L93 Difference]: Finished difference Result 638 states and 798 transitions. [2021-12-14 23:40:09,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 23:40:09,237 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 638 states and 798 transitions. [2021-12-14 23:40:09,241 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 411 [2021-12-14 23:40:09,244 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 638 states to 638 states and 798 transitions. [2021-12-14 23:40:09,244 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 638 [2021-12-14 23:40:09,244 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 638 [2021-12-14 23:40:09,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 638 states and 798 transitions. [2021-12-14 23:40:09,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 23:40:09,245 INFO L681 BuchiCegarLoop]: Abstraction has 638 states and 798 transitions. [2021-12-14 23:40:09,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states and 798 transitions. [2021-12-14 23:40:09,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 440. [2021-12-14 23:40:09,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 440 states have (on average 1.25) internal successors, (550), 439 states have internal predecessors, (550), 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) [2021-12-14 23:40:09,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 550 transitions. [2021-12-14 23:40:09,257 INFO L704 BuchiCegarLoop]: Abstraction has 440 states and 550 transitions. [2021-12-14 23:40:09,257 INFO L587 BuchiCegarLoop]: Abstraction has 440 states and 550 transitions. [2021-12-14 23:40:09,257 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-14 23:40:09,257 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 440 states and 550 transitions. [2021-12-14 23:40:09,259 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 310 [2021-12-14 23:40:09,259 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:40:09,259 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:40:09,260 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:40:09,260 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, 1, 1, 1, 1, 1, 1] [2021-12-14 23:40:09,260 INFO L791 eck$LassoCheckResult]: Stem: 1803#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(13, 4);call #Ultimate.allocInit(3, 5);call write~init~int(79, 5, 0, 1);call write~init~int(110, 5, 1, 1);call write~init~int(0, 5, 2, 1);call #Ultimate.allocInit(4, 6);call write~init~int(79, 6, 0, 1);call write~init~int(102, 6, 1, 1);call write~init~int(102, 6, 2, 1);call write~init~int(0, 6, 3, 1);call #Ultimate.allocInit(7, 7);call write~init~int(44, 7, 0, 1);call write~init~int(80, 7, 1, 1);call write~init~int(117, 7, 2, 1);call write~init~int(109, 7, 3, 1);call write~init~int(112, 7, 4, 1);call write~init~int(58, 7, 5, 1);call write~init~int(0, 7, 6, 1);call #Ultimate.allocInit(3, 8);call write~init~int(79, 8, 0, 1);call write~init~int(110, 8, 1, 1);call write~init~int(0, 8, 2, 1);call #Ultimate.allocInit(4, 9);call write~init~int(79, 9, 0, 1);call write~init~int(102, 9, 1, 1);call write~init~int(102, 9, 2, 1);call write~init~int(0, 9, 3, 1);call #Ultimate.allocInit(3, 10);call write~init~int(41, 10, 0, 1);call write~init~int(32, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(2, 11);call write~init~int(10, 11, 0, 1);call write~init~int(0, 11, 1, 1);call #Ultimate.allocInit(13, 12);call #Ultimate.allocInit(7, 13);call write~init~int(44, 13, 0, 1);call write~init~int(77, 13, 1, 1);call write~init~int(101, 13, 2, 1);call write~init~int(116, 13, 3, 1);call write~init~int(104, 13, 4, 1);call write~init~int(58, 13, 5, 1);call write~init~int(0, 13, 6, 1);call #Ultimate.allocInit(5, 14);call write~init~int(67, 14, 0, 1);call write~init~int(82, 14, 1, 1);call write~init~int(73, 14, 2, 1);call write~init~int(84, 14, 3, 1);call write~init~int(0, 14, 4, 1);call #Ultimate.allocInit(3, 15);call write~init~int(79, 15, 0, 1);call write~init~int(75, 15, 1, 1);call write~init~int(0, 15, 2, 1);call #Ultimate.allocInit(2, 16);call write~init~int(41, 16, 0, 1);call write~init~int(0, 16, 1, 1);call #Ultimate.allocInit(30, 17);call #Ultimate.allocInit(9, 18);call #Ultimate.allocInit(21, 19);call #Ultimate.allocInit(30, 20);call #Ultimate.allocInit(9, 21);call #Ultimate.allocInit(21, 22);call #Ultimate.allocInit(30, 23);call #Ultimate.allocInit(9, 24);call #Ultimate.allocInit(25, 25);call #Ultimate.allocInit(30, 26);call #Ultimate.allocInit(9, 27);call #Ultimate.allocInit(25, 28);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~switchedOnBeforeTS~0 := 0;~cleanupTimeShifts~0 := 4; 1717#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret53#1, main_~retValue_acc~13#1, main_~tmp~9#1;havoc main_~retValue_acc~13#1;havoc main_~tmp~9#1;assume { :begin_inline_select_helpers } true; 1700#L894 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 1701#L887 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~12#1;havoc valid_product_~retValue_acc~12#1;valid_product_~retValue_acc~12#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~12#1; 1789#L902 main_#t~ret53#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~9#1 := main_#t~ret53#1;havoc main_#t~ret53#1; 1788#L990 assume 0 != main_~tmp~9#1;assume { :begin_inline_setup } true; 1641#L966 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline___utac_acc__Specification5_spec__1 } true;~switchedOnBeforeTS~0 := 0; 1642#L826 assume { :end_inline___utac_acc__Specification5_spec__1 } true;assume { :begin_inline_test } true;havoc test_#t~nondet17#1, test_#t~nondet18#1, test_#t~nondet19#1, test_#t~nondet20#1, test_~splverifierCounter~0#1, test_~tmp~4#1, test_~tmp___0~2#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~4#1;havoc test_~tmp___0~2#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 1631#L293-2 [2021-12-14 23:40:09,261 INFO L793 eck$LassoCheckResult]: Loop: 1631#L293-2 assume !false; 1632#L294 assume test_~splverifierCounter~0#1 < 4; 1798#L295 test_~tmp~4#1 := test_#t~nondet17#1;havoc test_#t~nondet17#1; 2057#L303 assume !(0 != test_~tmp~4#1); 2056#L303-2 test_~tmp___0~2#1 := test_#t~nondet18#1;havoc test_#t~nondet18#1; 2054#L313 assume !(0 != test_~tmp___0~2#1); 2052#L313-2 test_~tmp___2~0#1 := test_#t~nondet19#1;havoc test_#t~nondet19#1; 2051#L323 assume 0 != test_~tmp___2~0#1;assume { :begin_inline_startSystem } true;~systemActive~0 := 1; 2049#L276 assume { :end_inline_startSystem } true; 2048#L331-2 assume { :begin_inline_timeShift } true;assume { :begin_inline___utac_acc__Specification5_spec__2 } true;havoc __utac_acc__Specification5_spec__2_#t~ret49#1;assume { :begin_inline_isPumpRunning } true;havoc isPumpRunning_#res#1;havoc isPumpRunning_~retValue_acc~1#1;havoc isPumpRunning_~retValue_acc~1#1;isPumpRunning_~retValue_acc~1#1 := ~pumpRunning~0;isPumpRunning_#res#1 := isPumpRunning_~retValue_acc~1#1; 2044#L193 __utac_acc__Specification5_spec__2_#t~ret49#1 := isPumpRunning_#res#1;assume { :end_inline_isPumpRunning } true;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret49#1;havoc __utac_acc__Specification5_spec__2_#t~ret49#1; 2043#L836 assume { :end_inline___utac_acc__Specification5_spec__2 } true; 2042#L82 assume !(0 != ~pumpRunning~0); 2027#L82-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret5#1, processEnvironment_~tmp~1#1;havoc processEnvironment_~tmp~1#1; 1740#L140 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__highWaterSensor } true;havoc processEnvironment__wrappee__highWaterSensor_#t~ret4#1, processEnvironment__wrappee__highWaterSensor_~tmp~0#1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0#1; 1713#L114-2 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret15#1, isHighWaterLevel_~retValue_acc~2#1, isHighWaterLevel_~tmp~2#1, isHighWaterLevel_~tmp___0~0#1;havoc isHighWaterLevel_~retValue_acc~2#1;havoc isHighWaterLevel_~tmp~2#1;havoc isHighWaterLevel_~tmp___0~0#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~6#1;havoc isHighWaterSensorDry_~retValue_acc~6#1; 1714#L434-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~6#1 := 1;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~6#1; 1718#L439-1 isHighWaterLevel_#t~ret15#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~2#1 := isHighWaterLevel_#t~ret15#1;havoc isHighWaterLevel_#t~ret15#1; 1719#L242-3 assume 0 != isHighWaterLevel_~tmp~2#1;isHighWaterLevel_~tmp___0~0#1 := 0; 1715#L242-5 isHighWaterLevel_~retValue_acc~2#1 := isHighWaterLevel_~tmp___0~0#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~2#1; 1716#L248-1 processEnvironment__wrappee__highWaterSensor_#t~ret4#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment__wrappee__highWaterSensor_~tmp~0#1 := processEnvironment__wrappee__highWaterSensor_#t~ret4#1;havoc processEnvironment__wrappee__highWaterSensor_#t~ret4#1; 1766#L118-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 1735#L106-2 assume { :end_inline_processEnvironment__wrappee__base } true; 1736#L114-3 assume { :end_inline_processEnvironment__wrappee__highWaterSensor } true; 1806#L140-1 assume { :end_inline_processEnvironment } true; 1993#L89-1 assume { :begin_inline___utac_acc__Specification5_spec__3 } true;havoc __utac_acc__Specification5_spec__3_#t~ret50#1, __utac_acc__Specification5_spec__3_#t~ret51#1, __utac_acc__Specification5_spec__3_~tmp~8#1, __utac_acc__Specification5_spec__3_~tmp___0~3#1;havoc __utac_acc__Specification5_spec__3_~tmp~8#1;havoc __utac_acc__Specification5_spec__3_~tmp___0~3#1;assume { :begin_inline_getWaterLevel } true;havoc getWaterLevel_#res#1;havoc getWaterLevel_~retValue_acc~5#1;havoc getWaterLevel_~retValue_acc~5#1;getWaterLevel_~retValue_acc~5#1 := ~waterLevel~0;getWaterLevel_#res#1 := getWaterLevel_~retValue_acc~5#1; 1992#L426 __utac_acc__Specification5_spec__3_#t~ret50#1 := getWaterLevel_#res#1;assume { :end_inline_getWaterLevel } true;__utac_acc__Specification5_spec__3_~tmp~8#1 := __utac_acc__Specification5_spec__3_#t~ret50#1;havoc __utac_acc__Specification5_spec__3_#t~ret50#1; 1991#L847 assume 2 != __utac_acc__Specification5_spec__3_~tmp~8#1;assume { :begin_inline_isPumpRunning } true;havoc isPumpRunning_#res#1;havoc isPumpRunning_~retValue_acc~1#1;havoc isPumpRunning_~retValue_acc~1#1;isPumpRunning_~retValue_acc~1#1 := ~pumpRunning~0;isPumpRunning_#res#1 := isPumpRunning_~retValue_acc~1#1; 1990#L193-1 __utac_acc__Specification5_spec__3_#t~ret51#1 := isPumpRunning_#res#1;assume { :end_inline_isPumpRunning } true;__utac_acc__Specification5_spec__3_~tmp___0~3#1 := __utac_acc__Specification5_spec__3_#t~ret51#1;havoc __utac_acc__Specification5_spec__3_#t~ret51#1; 1989#L851 assume !(0 != __utac_acc__Specification5_spec__3_~tmp___0~3#1); 1987#L847-1 assume { :end_inline___utac_acc__Specification5_spec__3 } true; 1796#L99 assume { :end_inline_timeShift } true; 1631#L293-2 [2021-12-14 23:40:09,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:40:09,261 INFO L85 PathProgramCache]: Analyzing trace with hash 87859946, now seen corresponding path program 4 times [2021-12-14 23:40:09,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:40:09,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233829160] [2021-12-14 23:40:09,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:40:09,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:40:09,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:40:09,267 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:40:09,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:40:09,275 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:40:09,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:40:09,275 INFO L85 PathProgramCache]: Analyzing trace with hash 581349059, now seen corresponding path program 1 times [2021-12-14 23:40:09,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:40:09,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882731210] [2021-12-14 23:40:09,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:40:09,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:40:09,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:40:09,280 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:40:09,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:40:09,287 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:40:09,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:40:09,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1177906604, now seen corresponding path program 1 times [2021-12-14 23:40:09,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:40:09,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505211724] [2021-12-14 23:40:09,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:40:09,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:40:09,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:40:09,296 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:40:09,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:40:09,308 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:40:12,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 14.12 11:40:12 BoogieIcfgContainer [2021-12-14 23:40:12,216 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-14 23:40:12,216 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-14 23:40:12,216 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-14 23:40:12,217 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-14 23:40:12,217 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:40:07" (3/4) ... [2021-12-14 23:40:12,219 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-12-14 23:40:12,302 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-14 23:40:12,303 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-14 23:40:12,303 INFO L158 Benchmark]: Toolchain (without parser) took 5450.21ms. Allocated memory was 88.1MB in the beginning and 146.8MB in the end (delta: 58.7MB). Free memory was 59.3MB in the beginning and 76.5MB in the end (delta: -17.3MB). Peak memory consumption was 42.3MB. Max. memory is 16.1GB. [2021-12-14 23:40:12,304 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 73.4MB. Free memory is still 36.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 23:40:12,304 INFO L158 Benchmark]: CACSL2BoogieTranslator took 391.03ms. Allocated memory is still 88.1MB. Free memory was 59.1MB in the beginning and 56.5MB in the end (delta: 2.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-14 23:40:12,304 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.67ms. Allocated memory is still 88.1MB. Free memory was 56.5MB in the beginning and 53.0MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-14 23:40:12,305 INFO L158 Benchmark]: Boogie Preprocessor took 56.43ms. Allocated memory is still 88.1MB. Free memory was 53.0MB in the beginning and 50.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 23:40:12,305 INFO L158 Benchmark]: RCFGBuilder took 533.87ms. Allocated memory is still 88.1MB. Free memory was 50.5MB in the beginning and 54.1MB in the end (delta: -3.7MB). Peak memory consumption was 18.0MB. Max. memory is 16.1GB. [2021-12-14 23:40:12,306 INFO L158 Benchmark]: BuchiAutomizer took 4325.08ms. Allocated memory was 88.1MB in the beginning and 146.8MB in the end (delta: 58.7MB). Free memory was 54.1MB in the beginning and 79.7MB in the end (delta: -25.5MB). Peak memory consumption was 70.5MB. Max. memory is 16.1GB. [2021-12-14 23:40:12,306 INFO L158 Benchmark]: Witness Printer took 86.56ms. Allocated memory is still 146.8MB. Free memory was 79.7MB in the beginning and 76.5MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-14 23:40:12,307 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 73.4MB. Free memory is still 36.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 391.03ms. Allocated memory is still 88.1MB. Free memory was 59.1MB in the beginning and 56.5MB in the end (delta: 2.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.67ms. Allocated memory is still 88.1MB. Free memory was 56.5MB in the beginning and 53.0MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.43ms. Allocated memory is still 88.1MB. Free memory was 53.0MB in the beginning and 50.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 533.87ms. Allocated memory is still 88.1MB. Free memory was 50.5MB in the beginning and 54.1MB in the end (delta: -3.7MB). Peak memory consumption was 18.0MB. Max. memory is 16.1GB. * BuchiAutomizer took 4325.08ms. Allocated memory was 88.1MB in the beginning and 146.8MB in the end (delta: 58.7MB). Free memory was 54.1MB in the beginning and 79.7MB in the end (delta: -25.5MB). Peak memory consumption was 70.5MB. Max. memory is 16.1GB. * Witness Printer took 86.56ms. Allocated memory is still 146.8MB. Free memory was 79.7MB in the beginning and 76.5MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 440 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.2s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 3.6s. Construction of modules took 0.1s. 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 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 198 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 440 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1490 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1490 mSDsluCounter, 1569 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 807 mSDsCounter, 64 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 142 IncrementalHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 64 mSolverCounterUnsat, 762 mSDtfsCounter, 142 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 293]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {splverifierCounter=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4602f668=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@53dc426f=0, tmp___0=0, NULL=0, head=0, pumpRunning=0, tmp___0=0, NULL=1, retValue_acc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1608011d=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@752fe1b=0, methaneLevelCritical=0, retValue_acc=1, tmp=1, tmp=1, retValue_acc=1, retValue_acc=0, \result=1, \result=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6bb385b3=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@c4d1829=29, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@58854c62=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7417b349=0, tmp___2=29, tmp=1, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7fd15bcd=0, cleanupTimeShifts=4, switchedOnBeforeTS=0, \result=0, tmp=0, tmp___0=0, head=0, \result=1, tmp___1=0, retValue_acc=1, NULL=0, waterLevel=1, systemActive=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@f83c647=0, tmp=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@54bfd049=0, tmp=0, retValue_acc=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 293]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L70] int pumpRunning = 0; [L71] int systemActive = 1; [L351] int waterLevel = 1; [L352] int methaneLevelCritical = 0; [L623] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L820] int switchedOnBeforeTS ; [L907] int cleanupTimeShifts = 4; [L981] int retValue_acc ; [L982] int tmp ; [L986] FCALL select_helpers() [L987] FCALL select_features() [L988] CALL, EXPR valid_product() [L898] int retValue_acc ; [L901] retValue_acc = 1 [L902] return (retValue_acc); [L988] RET, EXPR valid_product() [L988] tmp = valid_product() [L990] COND TRUE \read(tmp) [L992] FCALL setup() [L993] CALL runTest() [L974] CALL __utac_acc__Specification5_spec__1() [L825] switchedOnBeforeTS = 0 [L974] RET __utac_acc__Specification5_spec__1() [L975] CALL test() [L284] int splverifierCounter ; [L285] int tmp ; [L286] int tmp___0 ; [L287] int tmp___1 ; [L288] int tmp___2 ; [L291] splverifierCounter = 0 Loop: [L293] COND TRUE 1 [L295] COND TRUE splverifierCounter < 4 [L301] tmp = __VERIFIER_nondet_int() [L303] COND FALSE !(\read(tmp)) [L311] tmp___0 = __VERIFIER_nondet_int() [L313] COND FALSE !(\read(tmp___0)) [L321] tmp___2 = __VERIFIER_nondet_int() [L323] COND TRUE \read(tmp___2) [L325] CALL startSystem() [L275] systemActive = 1 [L325] RET startSystem() [L338] CALL timeShift() [L80] CALL __utac_acc__Specification5_spec__2() [L834] CALL, EXPR isPumpRunning() [L189] int retValue_acc ; [L192] retValue_acc = pumpRunning [L193] return (retValue_acc); [L834] RET, EXPR isPumpRunning() [L834] switchedOnBeforeTS = isPumpRunning() [L80] RET __utac_acc__Specification5_spec__2() [L82] COND FALSE !(\read(pumpRunning)) [L89] COND TRUE \read(systemActive) [L91] CALL processEnvironment() [L137] int tmp ; [L140] COND FALSE !(\read(pumpRunning)) [L155] CALL processEnvironment__wrappee__highWaterSensor() [L111] int tmp ; [L114] COND TRUE ! pumpRunning [L116] CALL, EXPR isHighWaterLevel() [L234] int retValue_acc ; [L235] int tmp ; [L236] int tmp___0 ; [L240] CALL, EXPR isHighWaterSensorDry() [L431] int retValue_acc ; [L434] COND TRUE waterLevel < 2 [L435] retValue_acc = 1 [L436] return (retValue_acc); [L240] RET, EXPR isHighWaterSensorDry() [L240] tmp = isHighWaterSensorDry() [L242] COND TRUE \read(tmp) [L243] tmp___0 = 0 [L247] retValue_acc = tmp___0 [L248] return (retValue_acc); [L116] RET, EXPR isHighWaterLevel() [L116] tmp = isHighWaterLevel() [L118] COND FALSE !(\read(tmp)) [L124] FCALL processEnvironment__wrappee__base() [L155] RET processEnvironment__wrappee__highWaterSensor() [L91] RET processEnvironment() [L97] CALL __utac_acc__Specification5_spec__3() [L840] int tmp ; [L841] int tmp___0 ; [L845] CALL, EXPR getWaterLevel() [L422] int retValue_acc ; [L425] retValue_acc = waterLevel [L426] return (retValue_acc); [L845] RET, EXPR getWaterLevel() [L845] tmp = getWaterLevel() [L847] COND TRUE tmp != 2 [L849] CALL, EXPR isPumpRunning() [L189] int retValue_acc ; [L192] retValue_acc = pumpRunning [L193] return (retValue_acc); [L849] RET, EXPR isPumpRunning() [L849] tmp___0 = isPumpRunning() [L851] COND FALSE !(\read(tmp___0)) [L97] RET __utac_acc__Specification5_spec__3() [L338] RET timeShift() End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-12-14 23:40:12,352 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)