./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_product36.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_574928c5-075b-49b9-8c31-a839375475b6/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_574928c5-075b-49b9-8c31-a839375475b6/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_574928c5-075b-49b9-8c31-a839375475b6/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_574928c5-075b-49b9-8c31-a839375475b6/bin/uautomizer-GMMbpWq8iD/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product36.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_574928c5-075b-49b9-8c31-a839375475b6/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_574928c5-075b-49b9-8c31-a839375475b6/bin/uautomizer-GMMbpWq8iD --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 a02c09de3ac56c41127e71d631df699be80ebdf5846a7586536864de14f59a0e .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:50:37,063 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:50:37,066 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:50:37,103 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:50:37,105 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:50:37,106 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:50:37,108 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:50:37,111 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:50:37,114 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:50:37,116 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:50:37,117 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:50:37,119 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:50:37,120 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:50:37,126 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:50:37,130 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:50:37,132 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:50:37,134 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:50:37,141 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:50:37,147 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:50:37,157 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:50:37,161 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:50:37,163 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:50:37,168 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:50:37,169 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:50:37,180 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:50:37,181 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:50:37,182 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:50:37,183 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:50:37,184 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:50:37,185 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:50:37,186 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:50:37,187 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:50:37,188 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:50:37,195 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:50:37,198 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:50:37,198 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:50:37,199 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:50:37,199 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:50:37,200 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:50:37,201 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:50:37,202 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:50:37,203 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_574928c5-075b-49b9-8c31-a839375475b6/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-28 23:50:37,260 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:50:37,261 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:50:37,265 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:50:37,265 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:50:37,266 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:50:37,267 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:50:37,267 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:50:37,267 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 23:50:37,267 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 23:50:37,267 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 23:50:37,267 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 23:50:37,267 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 23:50:37,268 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 23:50:37,268 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:50:37,268 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:50:37,268 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 23:50:37,268 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:50:37,268 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:50:37,269 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:50:37,273 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 23:50:37,273 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 23:50:37,273 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 23:50:37,274 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:50:37,281 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:50:37,282 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 23:50:37,282 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:50:37,282 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 23:50:37,283 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:50:37,283 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:50:37,283 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:50:37,283 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:50:37,284 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:50:37,285 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 23:50:37,285 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_574928c5-075b-49b9-8c31-a839375475b6/bin/uautomizer-GMMbpWq8iD/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_574928c5-075b-49b9-8c31-a839375475b6/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a02c09de3ac56c41127e71d631df699be80ebdf5846a7586536864de14f59a0e [2021-10-28 23:50:37,681 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:50:37,706 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:50:37,710 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:50:37,711 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:50:37,712 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:50:37,714 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_574928c5-075b-49b9-8c31-a839375475b6/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/product-lines/minepump_spec3_product36.cil.c [2021-10-28 23:50:37,800 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_574928c5-075b-49b9-8c31-a839375475b6/bin/uautomizer-GMMbpWq8iD/data/4d0c7d253/ff22651b0f7d468fb776819de89ada98/FLAG47f4c0825 [2021-10-28 23:50:38,487 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:50:38,488 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_574928c5-075b-49b9-8c31-a839375475b6/sv-benchmarks/c/product-lines/minepump_spec3_product36.cil.c [2021-10-28 23:50:38,503 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_574928c5-075b-49b9-8c31-a839375475b6/bin/uautomizer-GMMbpWq8iD/data/4d0c7d253/ff22651b0f7d468fb776819de89ada98/FLAG47f4c0825 [2021-10-28 23:50:38,702 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_574928c5-075b-49b9-8c31-a839375475b6/bin/uautomizer-GMMbpWq8iD/data/4d0c7d253/ff22651b0f7d468fb776819de89ada98 [2021-10-28 23:50:38,705 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:50:38,707 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:50:38,711 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:50:38,711 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:50:38,714 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:50:38,715 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:50:38" (1/1) ... [2021-10-28 23:50:38,716 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74d903df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:50:38, skipping insertion in model container [2021-10-28 23:50:38,717 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:50:38" (1/1) ... [2021-10-28 23:50:38,724 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:50:38,795 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:50:39,023 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_574928c5-075b-49b9-8c31-a839375475b6/sv-benchmarks/c/product-lines/minepump_spec3_product36.cil.c[1605,1618] [2021-10-28 23:50:39,212 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:50:39,225 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:50:39,242 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_574928c5-075b-49b9-8c31-a839375475b6/sv-benchmarks/c/product-lines/minepump_spec3_product36.cil.c[1605,1618] [2021-10-28 23:50:39,346 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:50:39,379 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:50:39,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:50:39 WrapperNode [2021-10-28 23:50:39,380 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:50:39,382 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:50:39,382 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:50:39,382 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:50:39,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:50:39" (1/1) ... [2021-10-28 23:50:39,413 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:50:39" (1/1) ... [2021-10-28 23:50:39,469 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:50:39,470 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:50:39,470 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:50:39,470 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:50:39,481 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:50:39" (1/1) ... [2021-10-28 23:50:39,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:50:39" (1/1) ... [2021-10-28 23:50:39,487 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:50:39" (1/1) ... [2021-10-28 23:50:39,488 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:50:39" (1/1) ... [2021-10-28 23:50:39,504 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:50:39" (1/1) ... [2021-10-28 23:50:39,529 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:50:39" (1/1) ... [2021-10-28 23:50:39,531 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:50:39" (1/1) ... [2021-10-28 23:50:39,536 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:50:39,538 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:50:39,547 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:50:39,548 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:50:39,549 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:50:39" (1/1) ... [2021-10-28 23:50:39,556 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:50:39,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_574928c5-075b-49b9-8c31-a839375475b6/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:50:39,588 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_574928c5-075b-49b9-8c31-a839375475b6/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:50:39,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_574928c5-075b-49b9-8c31-a839375475b6/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 23:50:39,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:50:39,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:50:39,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:50:39,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:50:40,733 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:50:40,737 INFO L299 CfgBuilder]: Removed 108 assume(true) statements. [2021-10-28 23:50:40,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:50:40 BoogieIcfgContainer [2021-10-28 23:50:40,740 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:50:40,742 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 23:50:40,742 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 23:50:40,748 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 23:50:40,749 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:50:40,749 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 11:50:38" (1/3) ... [2021-10-28 23:50:40,751 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@77c7cb7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 11:50:40, skipping insertion in model container [2021-10-28 23:50:40,751 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:50:40,752 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:50:39" (2/3) ... [2021-10-28 23:50:40,752 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@77c7cb7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 11:50:40, skipping insertion in model container [2021-10-28 23:50:40,753 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:50:40,753 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:50:40" (3/3) ... [2021-10-28 23:50:40,755 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product36.cil.c [2021-10-28 23:50:40,825 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 23:50:40,826 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 23:50:40,826 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 23:50:40,826 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 23:50:40,826 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 23:50:40,827 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 23:50:40,827 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 23:50:40,827 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 23:50:40,846 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 83 states, 82 states have (on average 1.5365853658536586) internal successors, (126), 82 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:50:40,872 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 53 [2021-10-28 23:50:40,872 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:50:40,872 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:50:40,881 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-28 23:50:40,881 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:50:40,881 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 23:50:40,882 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 83 states, 82 states have (on average 1.5365853658536586) internal successors, (126), 82 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:50:40,890 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 53 [2021-10-28 23:50:40,890 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:50:40,891 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:50:40,892 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-28 23:50:40,892 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:50:40,898 INFO L791 eck$LassoCheckResult]: Stem: 59#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(13);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string47.base, #t~string47.offset, 1);call write~init~int(110, #t~string47.base, 1 + #t~string47.offset, 1);call write~init~int(0, #t~string47.base, 2 + #t~string47.offset, 1);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string49.base, #t~string49.offset, 1);call write~init~int(102, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(102, #t~string49.base, 2 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 3 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string51.base, #t~string51.offset, 1);call write~init~int(80, #t~string51.base, 1 + #t~string51.offset, 1);call write~init~int(117, #t~string51.base, 2 + #t~string51.offset, 1);call write~init~int(109, #t~string51.base, 3 + #t~string51.offset, 1);call write~init~int(112, #t~string51.base, 4 + #t~string51.offset, 1);call write~init~int(58, #t~string51.base, 5 + #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 6 + #t~string51.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string53.base, #t~string53.offset, 1);call write~init~int(110, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 2 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string55.base, #t~string55.offset, 1);call write~init~int(102, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(102, #t~string55.base, 2 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 3 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string57.base, #t~string57.offset, 1);call write~init~int(32, #t~string57.base, 1 + #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 2 + #t~string57.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string59.base, #t~string59.offset, 1);call write~init~int(0, #t~string59.base, 1 + #t~string59.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(13);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string68.base, #t~string68.offset, 1);call write~init~int(77, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(101, #t~string68.base, 2 + #t~string68.offset, 1);call write~init~int(116, #t~string68.base, 3 + #t~string68.offset, 1);call write~init~int(104, #t~string68.base, 4 + #t~string68.offset, 1);call write~init~int(58, #t~string68.base, 5 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 6 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string70.base, #t~string70.offset, 1);call write~init~int(82, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(73, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(84, #t~string70.base, 3 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 4 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string72.base, #t~string72.offset, 1);call write~init~int(75, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 2 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string74.base, #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 1 + #t~string74.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4; 44#L-1true havoc main_#res;havoc main_#t~ret75, main_~retValue_acc~9, main_~tmp~6;havoc main_~retValue_acc~9;havoc main_~tmp~6; 24#L900true havoc valid_product_#res;havoc valid_product_~retValue_acc~11;havoc valid_product_~retValue_acc~11;valid_product_~retValue_acc~11 := 1;valid_product_#res := valid_product_~retValue_acc~11; 7#L908true main_#t~ret75 := valid_product_#res;main_~tmp~6 := main_#t~ret75;havoc main_#t~ret75; 50#L864true assume 0 != main_~tmp~6; 34#L838true havoc test_#t~nondet61, test_#t~nondet62, test_#t~nondet63, test_#t~nondet64, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 40#L928-1true [2021-10-28 23:50:40,899 INFO L793 eck$LassoCheckResult]: Loop: 40#L928-1true assume !false; 5#L626true assume test_~splverifierCounter~0 < 4; 61#L627true test_~tmp~5 := test_#t~nondet61;havoc test_#t~nondet61; 30#L635true assume !(0 != test_~tmp~5); 79#L635-1true test_~tmp___0~1 := test_#t~nondet62;havoc test_#t~nondet62; 85#L645true assume !(0 != test_~tmp___0~1); 49#L645-1true test_~tmp___2~0 := test_#t~nondet63;havoc test_#t~nondet63; 38#L655true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 48#L663-1true assume !(0 != ~pumpRunning~0); 33#L444true assume !(0 != ~systemActive~0); 83#L451true havoc __utac_acc__Specification3_spec__1_#t~ret77, __utac_acc__Specification3_spec__1_#t~ret78, __utac_acc__Specification3_spec__1_#t~ret79, __utac_acc__Specification3_spec__1_~tmp~7, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~7;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~6;havoc isMethaneLevelCritical_~retValue_acc~6;isMethaneLevelCritical_~retValue_acc~6 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~6; 76#L728true __utac_acc__Specification3_spec__1_#t~ret77 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~7 := __utac_acc__Specification3_spec__1_#t~ret77;havoc __utac_acc__Specification3_spec__1_#t~ret77; 64#L922true assume 0 != __utac_acc__Specification3_spec__1_~tmp~7; 40#L928-1true [2021-10-28 23:50:40,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:50:40,907 INFO L85 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-10-28 23:50:40,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:50:40,919 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763482036] [2021-10-28 23:50:40,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:50:40,921 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:50:41,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:50:41,248 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:50:41,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:50:41,497 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:50:41,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:50:41,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1671986817, now seen corresponding path program 1 times [2021-10-28 23:50:41,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:50:41,502 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860218526] [2021-10-28 23:50:41,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:50:41,502 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:50:41,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:50:41,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:50:41,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:50:41,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860218526] [2021-10-28 23:50:41,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860218526] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:50:41,584 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:50:41,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:50:41,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230220427] [2021-10-28 23:50:41,591 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 23:50:41,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:50:41,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:50:41,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:50:41,627 INFO L87 Difference]: Start difference. First operand has 83 states, 82 states have (on average 1.5365853658536586) internal successors, (126), 82 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:50:41,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:50:41,745 INFO L93 Difference]: Finished difference Result 160 states and 228 transitions. [2021-10-28 23:50:41,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:50:41,748 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 160 states and 228 transitions. [2021-10-28 23:50:41,766 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 102 [2021-10-28 23:50:41,774 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 160 states to 146 states and 213 transitions. [2021-10-28 23:50:41,776 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 146 [2021-10-28 23:50:41,777 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 146 [2021-10-28 23:50:41,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 146 states and 213 transitions. [2021-10-28 23:50:41,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:50:41,780 INFO L681 BuchiCegarLoop]: Abstraction has 146 states and 213 transitions. [2021-10-28 23:50:41,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states and 213 transitions. [2021-10-28 23:50:41,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 144. [2021-10-28 23:50:41,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 144 states have (on average 1.4583333333333333) internal successors, (210), 143 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:50:41,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 210 transitions. [2021-10-28 23:50:41,829 INFO L704 BuchiCegarLoop]: Abstraction has 144 states and 210 transitions. [2021-10-28 23:50:41,829 INFO L587 BuchiCegarLoop]: Abstraction has 144 states and 210 transitions. [2021-10-28 23:50:41,829 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 23:50:41,829 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 144 states and 210 transitions. [2021-10-28 23:50:41,835 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 100 [2021-10-28 23:50:41,836 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:50:41,836 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:50:41,837 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-28 23:50:41,837 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:50:41,838 INFO L791 eck$LassoCheckResult]: Stem: 319#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(13);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string47.base, #t~string47.offset, 1);call write~init~int(110, #t~string47.base, 1 + #t~string47.offset, 1);call write~init~int(0, #t~string47.base, 2 + #t~string47.offset, 1);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string49.base, #t~string49.offset, 1);call write~init~int(102, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(102, #t~string49.base, 2 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 3 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string51.base, #t~string51.offset, 1);call write~init~int(80, #t~string51.base, 1 + #t~string51.offset, 1);call write~init~int(117, #t~string51.base, 2 + #t~string51.offset, 1);call write~init~int(109, #t~string51.base, 3 + #t~string51.offset, 1);call write~init~int(112, #t~string51.base, 4 + #t~string51.offset, 1);call write~init~int(58, #t~string51.base, 5 + #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 6 + #t~string51.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string53.base, #t~string53.offset, 1);call write~init~int(110, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 2 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string55.base, #t~string55.offset, 1);call write~init~int(102, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(102, #t~string55.base, 2 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 3 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string57.base, #t~string57.offset, 1);call write~init~int(32, #t~string57.base, 1 + #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 2 + #t~string57.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string59.base, #t~string59.offset, 1);call write~init~int(0, #t~string59.base, 1 + #t~string59.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(13);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string68.base, #t~string68.offset, 1);call write~init~int(77, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(101, #t~string68.base, 2 + #t~string68.offset, 1);call write~init~int(116, #t~string68.base, 3 + #t~string68.offset, 1);call write~init~int(104, #t~string68.base, 4 + #t~string68.offset, 1);call write~init~int(58, #t~string68.base, 5 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 6 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string70.base, #t~string70.offset, 1);call write~init~int(82, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(73, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(84, #t~string70.base, 3 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 4 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string72.base, #t~string72.offset, 1);call write~init~int(75, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 2 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string74.base, #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 1 + #t~string74.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4; 309#L-1 havoc main_#res;havoc main_#t~ret75, main_~retValue_acc~9, main_~tmp~6;havoc main_~retValue_acc~9;havoc main_~tmp~6; 288#L900 havoc valid_product_#res;havoc valid_product_~retValue_acc~11;havoc valid_product_~retValue_acc~11;valid_product_~retValue_acc~11 := 1;valid_product_#res := valid_product_~retValue_acc~11; 257#L908 main_#t~ret75 := valid_product_#res;main_~tmp~6 := main_#t~ret75;havoc main_#t~ret75; 258#L864 assume 0 != main_~tmp~6; 300#L838 havoc test_#t~nondet61, test_#t~nondet62, test_#t~nondet63, test_#t~nondet64, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 274#L928-1 [2021-10-28 23:50:41,838 INFO L793 eck$LassoCheckResult]: Loop: 274#L928-1 assume !false; 252#L626 assume test_~splverifierCounter~0 < 4; 253#L627 test_~tmp~5 := test_#t~nondet61;havoc test_#t~nondet61; 295#L635 assume !(0 != test_~tmp~5); 270#L635-1 test_~tmp___0~1 := test_#t~nondet62;havoc test_#t~nondet62; 331#L645 assume !(0 != test_~tmp___0~1); 272#L645-1 test_~tmp___2~0 := test_#t~nondet63;havoc test_#t~nondet63; 305#L655 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 279#L663-1 assume !(0 != ~pumpRunning~0); 298#L444 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret42, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 299#L476 assume !(0 == ~pumpRunning~0); 310#L451 havoc __utac_acc__Specification3_spec__1_#t~ret77, __utac_acc__Specification3_spec__1_#t~ret78, __utac_acc__Specification3_spec__1_#t~ret79, __utac_acc__Specification3_spec__1_~tmp~7, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~7;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~6;havoc isMethaneLevelCritical_~retValue_acc~6;isMethaneLevelCritical_~retValue_acc~6 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~6; 330#L728 __utac_acc__Specification3_spec__1_#t~ret77 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~7 := __utac_acc__Specification3_spec__1_#t~ret77;havoc __utac_acc__Specification3_spec__1_#t~ret77; 323#L922 assume 0 != __utac_acc__Specification3_spec__1_~tmp~7; 274#L928-1 [2021-10-28 23:50:41,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:50:41,840 INFO L85 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-10-28 23:50:41,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:50:41,840 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063038727] [2021-10-28 23:50:41,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:50:41,841 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:50:41,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:50:41,933 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:50:41,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:50:42,016 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:50:42,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:50:42,018 INFO L85 PathProgramCache]: Analyzing trace with hash -323593906, now seen corresponding path program 1 times [2021-10-28 23:50:42,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:50:42,018 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817115688] [2021-10-28 23:50:42,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:50:42,019 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:50:42,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:50:42,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:50:42,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:50:42,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817115688] [2021-10-28 23:50:42,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817115688] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:50:42,043 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:50:42,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:50:42,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974229474] [2021-10-28 23:50:42,044 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 23:50:42,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:50:42,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:50:42,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:50:42,046 INFO L87 Difference]: Start difference. First operand 144 states and 210 transitions. cyclomatic complexity: 69 Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:50:42,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:50:42,166 INFO L93 Difference]: Finished difference Result 239 states and 334 transitions. [2021-10-28 23:50:42,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:50:42,167 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 239 states and 334 transitions. [2021-10-28 23:50:42,173 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 171 [2021-10-28 23:50:42,178 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 239 states to 239 states and 334 transitions. [2021-10-28 23:50:42,178 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 239 [2021-10-28 23:50:42,179 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 239 [2021-10-28 23:50:42,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 239 states and 334 transitions. [2021-10-28 23:50:42,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:50:42,182 INFO L681 BuchiCegarLoop]: Abstraction has 239 states and 334 transitions. [2021-10-28 23:50:42,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states and 334 transitions. [2021-10-28 23:50:42,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2021-10-28 23:50:42,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 239 states have (on average 1.397489539748954) internal successors, (334), 238 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:50:42,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 334 transitions. [2021-10-28 23:50:42,205 INFO L704 BuchiCegarLoop]: Abstraction has 239 states and 334 transitions. [2021-10-28 23:50:42,205 INFO L587 BuchiCegarLoop]: Abstraction has 239 states and 334 transitions. [2021-10-28 23:50:42,205 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 23:50:42,205 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 239 states and 334 transitions. [2021-10-28 23:50:42,209 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 171 [2021-10-28 23:50:42,210 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:50:42,210 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:50:42,211 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-28 23:50:42,211 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] [2021-10-28 23:50:42,211 INFO L791 eck$LassoCheckResult]: Stem: 716#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(13);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string47.base, #t~string47.offset, 1);call write~init~int(110, #t~string47.base, 1 + #t~string47.offset, 1);call write~init~int(0, #t~string47.base, 2 + #t~string47.offset, 1);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string49.base, #t~string49.offset, 1);call write~init~int(102, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(102, #t~string49.base, 2 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 3 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string51.base, #t~string51.offset, 1);call write~init~int(80, #t~string51.base, 1 + #t~string51.offset, 1);call write~init~int(117, #t~string51.base, 2 + #t~string51.offset, 1);call write~init~int(109, #t~string51.base, 3 + #t~string51.offset, 1);call write~init~int(112, #t~string51.base, 4 + #t~string51.offset, 1);call write~init~int(58, #t~string51.base, 5 + #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 6 + #t~string51.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string53.base, #t~string53.offset, 1);call write~init~int(110, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 2 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string55.base, #t~string55.offset, 1);call write~init~int(102, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(102, #t~string55.base, 2 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 3 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string57.base, #t~string57.offset, 1);call write~init~int(32, #t~string57.base, 1 + #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 2 + #t~string57.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string59.base, #t~string59.offset, 1);call write~init~int(0, #t~string59.base, 1 + #t~string59.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(13);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string68.base, #t~string68.offset, 1);call write~init~int(77, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(101, #t~string68.base, 2 + #t~string68.offset, 1);call write~init~int(116, #t~string68.base, 3 + #t~string68.offset, 1);call write~init~int(104, #t~string68.base, 4 + #t~string68.offset, 1);call write~init~int(58, #t~string68.base, 5 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 6 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string70.base, #t~string70.offset, 1);call write~init~int(82, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(73, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(84, #t~string70.base, 3 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 4 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string72.base, #t~string72.offset, 1);call write~init~int(75, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 2 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string74.base, #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 1 + #t~string74.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4; 701#L-1 havoc main_#res;havoc main_#t~ret75, main_~retValue_acc~9, main_~tmp~6;havoc main_~retValue_acc~9;havoc main_~tmp~6; 678#L900 havoc valid_product_#res;havoc valid_product_~retValue_acc~11;havoc valid_product_~retValue_acc~11;valid_product_~retValue_acc~11 := 1;valid_product_#res := valid_product_~retValue_acc~11; 646#L908 main_#t~ret75 := valid_product_#res;main_~tmp~6 := main_#t~ret75;havoc main_#t~ret75; 647#L864 assume 0 != main_~tmp~6; 693#L838 havoc test_#t~nondet61, test_#t~nondet62, test_#t~nondet63, test_#t~nondet64, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 694#L928-1 [2021-10-28 23:50:42,212 INFO L793 eck$LassoCheckResult]: Loop: 694#L928-1 assume !false; 641#L626 assume test_~splverifierCounter~0 < 4; 642#L627 test_~tmp~5 := test_#t~nondet61;havoc test_#t~nondet61; 879#L635 assume !(0 != test_~tmp~5); 877#L635-1 test_~tmp___0~1 := test_#t~nondet62;havoc test_#t~nondet62; 876#L645 assume !(0 != test_~tmp___0~1); 874#L645-1 test_~tmp___2~0 := test_#t~nondet63;havoc test_#t~nondet63; 873#L655 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 696#L663-1 assume !(0 != ~pumpRunning~0); 812#L444 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret42, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 811#L476 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret60, isHighWaterLevel_~retValue_acc~5, isHighWaterLevel_~tmp~4, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~5;havoc isHighWaterLevel_~tmp~4;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~8;havoc isHighWaterSensorDry_~retValue_acc~8; 764#L768 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~8 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~8; 706#L773 isHighWaterLevel_#t~ret60 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~4 := isHighWaterLevel_#t~ret60;havoc isHighWaterLevel_#t~ret60; 704#L578 assume 0 != isHighWaterLevel_~tmp~4;isHighWaterLevel_~tmp___0~0 := 0; 705#L578-2 isHighWaterLevel_~retValue_acc~5 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~5; 717#L584 processEnvironment_#t~ret42 := isHighWaterLevel_#res;processEnvironment_~tmp~3 := processEnvironment_#t~ret42;havoc processEnvironment_#t~ret42; 707#L480 assume !(0 != processEnvironment_~tmp~3); 709#L451 havoc __utac_acc__Specification3_spec__1_#t~ret77, __utac_acc__Specification3_spec__1_#t~ret78, __utac_acc__Specification3_spec__1_#t~ret79, __utac_acc__Specification3_spec__1_~tmp~7, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~7;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~6;havoc isMethaneLevelCritical_~retValue_acc~6;isMethaneLevelCritical_~retValue_acc~6 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~6; 871#L728 __utac_acc__Specification3_spec__1_#t~ret77 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~7 := __utac_acc__Specification3_spec__1_#t~ret77;havoc __utac_acc__Specification3_spec__1_#t~ret77; 867#L922 assume 0 != __utac_acc__Specification3_spec__1_~tmp~7; 694#L928-1 [2021-10-28 23:50:42,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:50:42,213 INFO L85 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-10-28 23:50:42,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:50:42,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274992271] [2021-10-28 23:50:42,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:50:42,214 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:50:42,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:50:42,266 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:50:42,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:50:42,401 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:50:42,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:50:42,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1551490662, now seen corresponding path program 1 times [2021-10-28 23:50:42,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:50:42,405 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063458166] [2021-10-28 23:50:42,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:50:42,407 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:50:42,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:50:42,417 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:50:42,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:50:42,437 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:50:42,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:50:42,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1536778688, now seen corresponding path program 1 times [2021-10-28 23:50:42,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:50:42,439 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833558429] [2021-10-28 23:50:42,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:50:42,439 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:50:42,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:50:42,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:50:42,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:50:42,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833558429] [2021-10-28 23:50:42,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833558429] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:50:42,590 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:50:42,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:50:42,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495157076] [2021-10-28 23:50:42,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:50:42,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:50:42,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:50:42,938 INFO L87 Difference]: Start difference. First operand 239 states and 334 transitions. cyclomatic complexity: 98 Second operand has 5 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:50:43,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:50:43,085 INFO L93 Difference]: Finished difference Result 788 states and 1109 transitions. [2021-10-28 23:50:43,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:50:43,086 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 788 states and 1109 transitions. [2021-10-28 23:50:43,100 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 600 [2021-10-28 23:50:43,112 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 788 states to 788 states and 1109 transitions. [2021-10-28 23:50:43,113 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 788 [2021-10-28 23:50:43,115 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 788 [2021-10-28 23:50:43,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 788 states and 1109 transitions. [2021-10-28 23:50:43,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:50:43,126 INFO L681 BuchiCegarLoop]: Abstraction has 788 states and 1109 transitions. [2021-10-28 23:50:43,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states and 1109 transitions. [2021-10-28 23:50:43,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 472. [2021-10-28 23:50:43,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 472 states have (on average 1.36864406779661) internal successors, (646), 471 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:50:43,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 646 transitions. [2021-10-28 23:50:43,191 INFO L704 BuchiCegarLoop]: Abstraction has 472 states and 646 transitions. [2021-10-28 23:50:43,191 INFO L587 BuchiCegarLoop]: Abstraction has 472 states and 646 transitions. [2021-10-28 23:50:43,192 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-28 23:50:43,192 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 472 states and 646 transitions. [2021-10-28 23:50:43,198 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 342 [2021-10-28 23:50:43,198 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:50:43,199 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:50:43,201 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-28 23:50:43,202 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:50:43,202 INFO L791 eck$LassoCheckResult]: Stem: 1762#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(13);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string47.base, #t~string47.offset, 1);call write~init~int(110, #t~string47.base, 1 + #t~string47.offset, 1);call write~init~int(0, #t~string47.base, 2 + #t~string47.offset, 1);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string49.base, #t~string49.offset, 1);call write~init~int(102, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(102, #t~string49.base, 2 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 3 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string51.base, #t~string51.offset, 1);call write~init~int(80, #t~string51.base, 1 + #t~string51.offset, 1);call write~init~int(117, #t~string51.base, 2 + #t~string51.offset, 1);call write~init~int(109, #t~string51.base, 3 + #t~string51.offset, 1);call write~init~int(112, #t~string51.base, 4 + #t~string51.offset, 1);call write~init~int(58, #t~string51.base, 5 + #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 6 + #t~string51.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string53.base, #t~string53.offset, 1);call write~init~int(110, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 2 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string55.base, #t~string55.offset, 1);call write~init~int(102, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(102, #t~string55.base, 2 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 3 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string57.base, #t~string57.offset, 1);call write~init~int(32, #t~string57.base, 1 + #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 2 + #t~string57.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string59.base, #t~string59.offset, 1);call write~init~int(0, #t~string59.base, 1 + #t~string59.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(13);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string68.base, #t~string68.offset, 1);call write~init~int(77, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(101, #t~string68.base, 2 + #t~string68.offset, 1);call write~init~int(116, #t~string68.base, 3 + #t~string68.offset, 1);call write~init~int(104, #t~string68.base, 4 + #t~string68.offset, 1);call write~init~int(58, #t~string68.base, 5 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 6 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string70.base, #t~string70.offset, 1);call write~init~int(82, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(73, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(84, #t~string70.base, 3 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 4 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string72.base, #t~string72.offset, 1);call write~init~int(75, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 2 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string74.base, #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 1 + #t~string74.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4; 1744#L-1 havoc main_#res;havoc main_#t~ret75, main_~retValue_acc~9, main_~tmp~6;havoc main_~retValue_acc~9;havoc main_~tmp~6; 1720#L900 havoc valid_product_#res;havoc valid_product_~retValue_acc~11;havoc valid_product_~retValue_acc~11;valid_product_~retValue_acc~11 := 1;valid_product_#res := valid_product_~retValue_acc~11; 1691#L908 main_#t~ret75 := valid_product_#res;main_~tmp~6 := main_#t~ret75;havoc main_#t~ret75; 1692#L864 assume 0 != main_~tmp~6; 1733#L838 havoc test_#t~nondet61, test_#t~nondet62, test_#t~nondet63, test_#t~nondet64, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1706#L928-1 [2021-10-28 23:50:43,204 INFO L793 eck$LassoCheckResult]: Loop: 1706#L928-1 assume !false; 1686#L626 assume test_~splverifierCounter~0 < 4; 1687#L627 test_~tmp~5 := test_#t~nondet61;havoc test_#t~nondet61; 1727#L635 assume !(0 != test_~tmp~5); 1702#L635-1 test_~tmp___0~1 := test_#t~nondet62;havoc test_#t~nondet62; 1781#L645 assume !(0 != test_~tmp___0~1); 1747#L645-1 test_~tmp___2~0 := test_#t~nondet63;havoc test_#t~nondet63; 1739#L655 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 1711#L663-1 assume !(0 != ~pumpRunning~0); 1731#L444 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret42, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 1732#L476 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret60, isHighWaterLevel_~retValue_acc~5, isHighWaterLevel_~tmp~4, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~5;havoc isHighWaterLevel_~tmp~4;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~8;havoc isHighWaterSensorDry_~retValue_acc~8; 1695#L768 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~8 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~8; 1696#L773 isHighWaterLevel_#t~ret60 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~4 := isHighWaterLevel_#t~ret60;havoc isHighWaterLevel_#t~ret60; 1748#L578 assume 0 != isHighWaterLevel_~tmp~4;isHighWaterLevel_~tmp___0~0 := 0; 1749#L578-2 isHighWaterLevel_~retValue_acc~5 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~5; 1763#L584 processEnvironment_#t~ret42 := isHighWaterLevel_#res;processEnvironment_~tmp~3 := processEnvironment_#t~ret42;havoc processEnvironment_#t~ret42; 1750#L480 assume !(0 != processEnvironment_~tmp~3); 1752#L451 havoc __utac_acc__Specification3_spec__1_#t~ret77, __utac_acc__Specification3_spec__1_#t~ret78, __utac_acc__Specification3_spec__1_#t~ret79, __utac_acc__Specification3_spec__1_~tmp~7, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~7;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~6;havoc isMethaneLevelCritical_~retValue_acc~6;isMethaneLevelCritical_~retValue_acc~6 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~6; 1780#L728 __utac_acc__Specification3_spec__1_#t~ret77 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~7 := __utac_acc__Specification3_spec__1_#t~ret77;havoc __utac_acc__Specification3_spec__1_#t~ret77; 1766#L922 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~7);havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~7;havoc getWaterLevel_~retValue_acc~7;getWaterLevel_~retValue_acc~7 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~7; 1767#L760 __utac_acc__Specification3_spec__1_#t~ret78 := getWaterLevel_#res;__utac_acc__Specification3_spec__1_~tmp___0~2 := __utac_acc__Specification3_spec__1_#t~ret78;havoc __utac_acc__Specification3_spec__1_#t~ret78; 1768#L928 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~2); 1706#L928-1 [2021-10-28 23:50:43,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:50:43,204 INFO L85 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 4 times [2021-10-28 23:50:43,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:50:43,205 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797351966] [2021-10-28 23:50:43,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:50:43,206 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:50:43,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:50:43,256 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:50:43,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:50:43,345 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:50:43,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:50:43,346 INFO L85 PathProgramCache]: Analyzing trace with hash -628868084, now seen corresponding path program 1 times [2021-10-28 23:50:43,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:50:43,347 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531973344] [2021-10-28 23:50:43,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:50:43,348 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:50:43,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:50:43,357 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:50:43,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:50:43,369 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:50:43,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:50:43,370 INFO L85 PathProgramCache]: Analyzing trace with hash 624437042, now seen corresponding path program 1 times [2021-10-28 23:50:43,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:50:43,371 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313738528] [2021-10-28 23:50:43,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:50:43,372 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:50:43,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:50:43,436 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:50:43,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:50:43,519 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:52:02,484 WARN L207 SmtUtils]: Spent 1.31 m on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-10-28 23:53:22,968 WARN L207 SmtUtils]: Spent 37.03 s on a formula simplification that was a NOOP. DAG size: 433 [2021-10-28 23:53:23,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 11:53:23 BoogieIcfgContainer [2021-10-28 23:53:23,139 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 23:53:23,140 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:53:23,140 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:53:23,140 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:53:23,141 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:50:40" (3/4) ... [2021-10-28 23:53:23,149 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-28 23:53:23,251 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_574928c5-075b-49b9-8c31-a839375475b6/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:53:23,257 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:53:23,258 INFO L168 Benchmark]: Toolchain (without parser) took 164550.50 ms. Allocated memory was 117.4 MB in the beginning and 180.4 MB in the end (delta: 62.9 MB). Free memory was 75.4 MB in the beginning and 129.2 MB in the end (delta: -53.8 MB). Peak memory consumption was 8.6 MB. Max. memory is 16.1 GB. [2021-10-28 23:53:23,259 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 117.4 MB. Free memory is still 92.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:53:23,260 INFO L168 Benchmark]: CACSL2BoogieTranslator took 670.10 ms. Allocated memory is still 117.4 MB. Free memory was 75.2 MB in the beginning and 83.1 MB in the end (delta: -7.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:53:23,261 INFO L168 Benchmark]: Boogie Procedure Inliner took 87.41 ms. Allocated memory is still 117.4 MB. Free memory was 83.1 MB in the beginning and 79.9 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:53:23,262 INFO L168 Benchmark]: Boogie Preprocessor took 66.67 ms. Allocated memory is still 117.4 MB. Free memory was 79.9 MB in the beginning and 77.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:53:23,262 INFO L168 Benchmark]: RCFGBuilder took 1202.24 ms. Allocated memory was 117.4 MB in the beginning and 180.4 MB in the end (delta: 62.9 MB). Free memory was 77.8 MB in the beginning and 147.9 MB in the end (delta: -70.1 MB). Peak memory consumption was 40.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:53:23,263 INFO L168 Benchmark]: BuchiAutomizer took 162397.33 ms. Allocated memory is still 180.4 MB. Free memory was 147.9 MB in the beginning and 131.3 MB in the end (delta: 16.6 MB). Peak memory consumption was 105.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:53:23,268 INFO L168 Benchmark]: Witness Printer took 117.04 ms. Allocated memory is still 180.4 MB. Free memory was 131.3 MB in the beginning and 129.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:53:23,273 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 117.4 MB. Free memory is still 92.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 670.10 ms. Allocated memory is still 117.4 MB. Free memory was 75.2 MB in the beginning and 83.1 MB in the end (delta: -7.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 87.41 ms. Allocated memory is still 117.4 MB. Free memory was 83.1 MB in the beginning and 79.9 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 66.67 ms. Allocated memory is still 117.4 MB. Free memory was 79.9 MB in the beginning and 77.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1202.24 ms. Allocated memory was 117.4 MB in the beginning and 180.4 MB in the end (delta: 62.9 MB). Free memory was 77.8 MB in the beginning and 147.9 MB in the end (delta: -70.1 MB). Peak memory consumption was 40.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 162397.33 ms. Allocated memory is still 180.4 MB. Free memory was 147.9 MB in the beginning and 131.3 MB in the end (delta: 16.6 MB). Peak memory consumption was 105.4 MB. Max. memory is 16.1 GB. * Witness Printer took 117.04 ms. Allocated memory is still 180.4 MB. Free memory was 131.3 MB in the beginning and 129.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 472 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 162.2s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 161.5s. 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, 318 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 472 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 399 SDtfs, 623 SDslu, 640 SDs, 0 SdLazy, 75 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 625]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=23248} State at position 1 is {NULL=0, NULL=36978, NULL=23248, NULL=0, methaneLevelCritical=0, retValue_acc=1, retValue_acc=0, tmp=0, NULL=0, NULL=36981, tmp___1=0, NULL=36990, NULL=0, NULL=36971, NULL=36976, cleanupTimeShifts=4, NULL=36979, tmp=0, NULL=0, waterLevel=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@71a55b02=0, NULL=0, NULL=0, \result=1, head=0, pumpRunning=0, retValue_acc=1, NULL=36989, NULL=36966, NULL=0, NULL=0, NULL=0, NULL=0, tmp=1, \result=1, NULL=0, tmp=1, NULL=0, retValue_acc=1, NULL=23250, tmp___0=0, NULL=36973, NULL=36988, tmp=0, head=0, NULL=0, NULL=0, NULL=36985, NULL=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5257c833=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@48d1968=0, NULL=36974, retValue_acc=0, NULL=36968, NULL=36972, tmp___0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5f1974c3=0, NULL=0, NULL=0, NULL=23249, NULL=36967, NULL=36984, NULL=36987, tmp___0=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2e88e544=0, NULL=0, NULL=0, systemActive=1, \result=1, retValue_acc=0, \result=0, NULL=36982, NULL=0, NULL=0, NULL=0, NULL=36975, NULL=36983, \result=0, NULL=36991, NULL=0, NULL=36970, NULL=36977, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4b2bbec0=0, tmp___2=69, splverifierCounter=0, NULL=0, NULL=0, \result=0, NULL=36980, NULL=36969, tmp___1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@38346af2=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@634072e2=69, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@520f354=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6359e4c3=0, NULL=36986} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L228] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L436] int pumpRunning = 0; [L437] int systemActive = 1; [L685] int waterLevel = 1; [L686] int methaneLevelCritical = 0; [L779] int cleanupTimeShifts = 4; [L855] int retValue_acc ; [L856] int tmp ; [L904] int retValue_acc ; [L907] retValue_acc = 1 [L908] return (retValue_acc); [L862] tmp = valid_product() [L864] COND TRUE \read(tmp) [L616] int splverifierCounter ; [L617] int tmp ; [L618] int tmp___0 ; [L619] int tmp___1 ; [L620] int tmp___2 ; [L623] splverifierCounter = 0 Loop: [L625] COND TRUE 1 [L627] COND TRUE splverifierCounter < 4 [L633] tmp = __VERIFIER_nondet_int() [L635] COND FALSE !(\read(tmp)) [L643] tmp___0 = __VERIFIER_nondet_int() [L645] COND FALSE !(\read(tmp___0)) [L653] tmp___2 = __VERIFIER_nondet_int() [L655] COND TRUE \read(tmp___2) [L607] systemActive = 1 [L444] COND FALSE !(\read(pumpRunning)) [L451] COND TRUE \read(systemActive) [L473] int tmp ; [L476] COND TRUE ! pumpRunning [L570] int retValue_acc ; [L571] int tmp ; [L572] int tmp___0 ; [L765] int retValue_acc ; [L768] COND TRUE waterLevel < 2 [L769] retValue_acc = 1 [L770] return (retValue_acc); [L576] tmp = isHighWaterSensorDry() [L578] COND TRUE \read(tmp) [L579] tmp___0 = 0 [L583] retValue_acc = tmp___0 [L584] return (retValue_acc); [L478] tmp = isHighWaterLevel() [L480] COND FALSE !(\read(tmp)) [L914] int tmp ; [L915] int tmp___0 ; [L916] int tmp___1 ; [L724] int retValue_acc ; [L727] retValue_acc = methaneLevelCritical [L728] return (retValue_acc); [L920] tmp = isMethaneLevelCritical() [L922] COND FALSE !(\read(tmp)) [L756] int retValue_acc ; [L759] retValue_acc = waterLevel [L760] return (retValue_acc); [L926] tmp___0 = getWaterLevel() [L928] COND FALSE !(tmp___0 == 2) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-28 23:53:23,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_574928c5-075b-49b9-8c31-a839375475b6/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...