./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_product58.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_a0c8b126-2794-41d1-90f6-d23952616c46/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0c8b126-2794-41d1-90f6-d23952616c46/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0c8b126-2794-41d1-90f6-d23952616c46/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0c8b126-2794-41d1-90f6-d23952616c46/bin/uautomizer-UnR33cPsHg/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product58.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0c8b126-2794-41d1-90f6-d23952616c46/bin/uautomizer-UnR33cPsHg/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0c8b126-2794-41d1-90f6-d23952616c46/bin/uautomizer-UnR33cPsHg --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 ae631a30e0cfb00652c35b082fd4038988aa5f3b2e1b026ceeb94d0624c45642 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 09:44:32,608 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:44:32,610 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:44:32,665 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:44:32,666 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:44:32,672 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:44:32,674 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:44:32,677 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:44:32,679 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:44:32,680 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:44:32,682 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:44:32,683 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:44:32,684 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:44:32,685 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:44:32,687 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:44:32,689 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:44:32,690 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:44:32,691 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:44:32,693 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:44:32,696 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:44:32,698 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:44:32,700 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:44:32,702 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:44:32,703 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:44:32,707 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:44:32,708 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:44:32,708 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:44:32,709 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:44:32,710 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:44:32,711 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:44:32,712 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:44:32,713 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:44:32,714 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:44:32,715 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:44:32,716 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:44:32,717 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:44:32,718 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:44:32,718 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:44:32,718 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:44:32,720 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:44:32,721 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:44:32,722 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0c8b126-2794-41d1-90f6-d23952616c46/bin/uautomizer-UnR33cPsHg/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-28 09:44:32,749 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:44:32,749 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:44:32,750 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:44:32,750 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:44:32,751 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:44:32,752 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:44:32,752 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:44:32,753 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 09:44:32,753 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 09:44:32,753 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 09:44:32,754 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 09:44:32,754 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 09:44:32,755 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 09:44:32,755 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:44:32,755 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:44:32,756 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 09:44:32,756 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:44:32,757 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:44:32,757 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:44:32,757 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 09:44:32,758 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 09:44:32,758 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 09:44:32,758 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:44:32,759 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:44:32,759 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 09:44:32,760 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:44:32,760 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 09:44:32,760 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:44:32,761 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:44:32,761 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:44:32,762 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:44:32,762 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:44:32,763 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 09:44:32,764 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_a0c8b126-2794-41d1-90f6-d23952616c46/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0c8b126-2794-41d1-90f6-d23952616c46/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ae631a30e0cfb00652c35b082fd4038988aa5f3b2e1b026ceeb94d0624c45642 [2021-10-28 09:44:33,004 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:44:33,025 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:44:33,028 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:44:33,030 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:44:33,030 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:44:33,032 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0c8b126-2794-41d1-90f6-d23952616c46/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/product-lines/minepump_spec3_product58.cil.c [2021-10-28 09:44:33,098 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0c8b126-2794-41d1-90f6-d23952616c46/bin/uautomizer-UnR33cPsHg/data/63302a772/0ae0b6320e0b4e8d9c91d94fd7206995/FLAGf2ebedaed [2021-10-28 09:44:33,809 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:44:33,810 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0c8b126-2794-41d1-90f6-d23952616c46/sv-benchmarks/c/product-lines/minepump_spec3_product58.cil.c [2021-10-28 09:44:33,830 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0c8b126-2794-41d1-90f6-d23952616c46/bin/uautomizer-UnR33cPsHg/data/63302a772/0ae0b6320e0b4e8d9c91d94fd7206995/FLAGf2ebedaed [2021-10-28 09:44:34,051 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0c8b126-2794-41d1-90f6-d23952616c46/bin/uautomizer-UnR33cPsHg/data/63302a772/0ae0b6320e0b4e8d9c91d94fd7206995 [2021-10-28 09:44:34,056 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:44:34,059 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:44:34,061 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:44:34,061 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:44:34,065 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:44:34,066 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:44:34" (1/1) ... [2021-10-28 09:44:34,069 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@94c736 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:44:34, skipping insertion in model container [2021-10-28 09:44:34,069 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:44:34" (1/1) ... [2021-10-28 09:44:34,080 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:44:34,145 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:44:34,454 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_a0c8b126-2794-41d1-90f6-d23952616c46/sv-benchmarks/c/product-lines/minepump_spec3_product58.cil.c[13037,13050] [2021-10-28 09:44:34,523 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:44:34,535 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:44:34,589 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_a0c8b126-2794-41d1-90f6-d23952616c46/sv-benchmarks/c/product-lines/minepump_spec3_product58.cil.c[13037,13050] [2021-10-28 09:44:34,619 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:44:34,645 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:44:34,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:44:34 WrapperNode [2021-10-28 09:44:34,647 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:44:34,649 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:44:34,649 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:44:34,649 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:44:34,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:44:34" (1/1) ... [2021-10-28 09:44:34,693 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:44:34" (1/1) ... [2021-10-28 09:44:34,770 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:44:34,777 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:44:34,778 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:44:34,778 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:44:34,787 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:44:34" (1/1) ... [2021-10-28 09:44:34,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:44:34" (1/1) ... [2021-10-28 09:44:34,807 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:44:34" (1/1) ... [2021-10-28 09:44:34,808 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:44:34" (1/1) ... [2021-10-28 09:44:34,847 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:44:34" (1/1) ... [2021-10-28 09:44:34,855 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:44:34" (1/1) ... [2021-10-28 09:44:34,871 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:44:34" (1/1) ... [2021-10-28 09:44:34,881 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:44:34,882 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:44:34,882 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:44:34,883 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:44:34,884 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:44:34" (1/1) ... [2021-10-28 09:44:34,892 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:44:34,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0c8b126-2794-41d1-90f6-d23952616c46/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:44:34,916 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0c8b126-2794-41d1-90f6-d23952616c46/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:44:34,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0c8b126-2794-41d1-90f6-d23952616c46/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 09:44:34,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:44:34,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:44:34,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:44:34,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:44:35,821 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:44:35,821 INFO L299 CfgBuilder]: Removed 200 assume(true) statements. [2021-10-28 09:44:35,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:44:35 BoogieIcfgContainer [2021-10-28 09:44:35,824 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:44:35,825 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 09:44:35,825 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 09:44:35,830 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 09:44:35,845 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:44:35,845 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 09:44:34" (1/3) ... [2021-10-28 09:44:35,847 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3a847d94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 09:44:35, skipping insertion in model container [2021-10-28 09:44:35,847 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:44:35,847 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:44:34" (2/3) ... [2021-10-28 09:44:35,847 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3a847d94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 09:44:35, skipping insertion in model container [2021-10-28 09:44:35,848 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:44:35,848 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:44:35" (3/3) ... [2021-10-28 09:44:35,849 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product58.cil.c [2021-10-28 09:44:35,903 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 09:44:35,903 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 09:44:35,903 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 09:44:35,903 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 09:44:35,903 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 09:44:35,903 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 09:44:35,904 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 09:44:35,904 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 09:44:35,933 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 138 states, 137 states have (on average 1.510948905109489) internal successors, (207), 137 states have internal predecessors, (207), 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 09:44:35,960 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 89 [2021-10-28 09:44:35,961 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:44:35,961 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:44:35,969 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-28 09:44:35,969 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:44:35,970 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 09:44:35,970 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 138 states, 137 states have (on average 1.510948905109489) internal successors, (207), 137 states have internal predecessors, (207), 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 09:44:35,979 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 89 [2021-10-28 09:44:35,980 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:44:35,980 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:44:35,981 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-28 09:44:35,981 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:44:35,986 INFO L791 eck$LassoCheckResult]: Stem: 124#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~string27.base, #t~string27.offset := #Ultimate.allocOnStack(30);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(9);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(21);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(30);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(9);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(21);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(30);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(9);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(25);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(30);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(9);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(25);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(13);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string47.base, #t~string47.offset, 1);call write~init~int(77, #t~string47.base, 1 + #t~string47.offset, 1);call write~init~int(101, #t~string47.base, 2 + #t~string47.offset, 1);call write~init~int(116, #t~string47.base, 3 + #t~string47.offset, 1);call write~init~int(104, #t~string47.base, 4 + #t~string47.offset, 1);call write~init~int(58, #t~string47.base, 5 + #t~string47.offset, 1);call write~init~int(0, #t~string47.base, 6 + #t~string47.offset, 1);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string49.base, #t~string49.offset, 1);call write~init~int(82, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(73, #t~string49.base, 2 + #t~string49.offset, 1);call write~init~int(84, #t~string49.base, 3 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 4 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string51.base, #t~string51.offset, 1);call write~init~int(75, #t~string51.base, 1 + #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 2 + #t~string51.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string53.base, #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 1 + #t~string53.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(13);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(110, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 3 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string72.base, #t~string72.offset, 1);call write~init~int(80, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(117, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(109, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(112, #t~string72.base, 4 + #t~string72.offset, 1);call write~init~int(58, #t~string72.base, 5 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 6 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string74.base, #t~string74.offset, 1);call write~init~int(110, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string76.base, #t~string76.offset, 1);call write~init~int(102, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(102, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 3 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string78.base, #t~string78.offset, 1);call write~init~int(32, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 47#L-1true havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 50#L176true havoc valid_product_#res;havoc valid_product_~retValue_acc~2;havoc valid_product_~retValue_acc~2;valid_product_~retValue_acc~2 := 1;valid_product_#res := valid_product_~retValue_acc~2; 91#L184true main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 61#L140true assume 0 != main_~tmp~0; 113#L113true havoc test_#t~nondet57, test_#t~nondet58, test_#t~nondet59, test_#t~nondet60, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 95#L689-1true [2021-10-28 09:44:35,987 INFO L793 eck$LassoCheckResult]: Loop: 95#L689-1true assume !false; 32#L720true assume test_~splverifierCounter~0 < 4; 92#L721true test_~tmp~5 := test_#t~nondet57;havoc test_#t~nondet57; 42#L729true assume !(0 != test_~tmp~5); 54#L729-1true test_~tmp___0~1 := test_#t~nondet58;havoc test_#t~nondet58; 4#L739true assume !(0 != test_~tmp___0~1); 118#L739-1true test_~tmp___2~0 := test_#t~nondet59;havoc test_#t~nondet59; 9#L749true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 60#L757-2true assume !(0 != ~pumpRunning~0); 135#L785true assume !(0 != ~systemActive~0); 19#L792true havoc __utac_acc__Specification3_spec__1_#t~ret54, __utac_acc__Specification3_spec__1_#t~ret55, __utac_acc__Specification3_spec__1_#t~ret56, __utac_acc__Specification3_spec__1_~tmp~4, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~4;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;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; 93#L613-2true __utac_acc__Specification3_spec__1_#t~ret54 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~4 := __utac_acc__Specification3_spec__1_#t~ret54;havoc __utac_acc__Specification3_spec__1_#t~ret54; 86#L683true assume 0 != __utac_acc__Specification3_spec__1_~tmp~4; 95#L689-1true [2021-10-28 09:44:35,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:44:35,993 INFO L85 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-10-28 09:44:36,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:44:36,004 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444847671] [2021-10-28 09:44:36,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:44:36,005 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:44:36,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:44:36,211 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:44:36,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:44:36,408 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:44:36,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:44:36,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1678143626, now seen corresponding path program 1 times [2021-10-28 09:44:36,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:44:36,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732028429] [2021-10-28 09:44:36,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:44:36,429 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:44:36,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:44:36,535 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 09:44:36,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:44:36,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732028429] [2021-10-28 09:44:36,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732028429] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:44:36,538 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:44:36,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:44:36,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566730528] [2021-10-28 09:44:36,548 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:44:36,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:44:36,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:44:36,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:44:36,577 INFO L87 Difference]: Start difference. First operand has 138 states, 137 states have (on average 1.510948905109489) internal successors, (207), 137 states have internal predecessors, (207), 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 09:44:36,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:44:36,621 INFO L93 Difference]: Finished difference Result 138 states and 197 transitions. [2021-10-28 09:44:36,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:44:36,623 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 138 states and 197 transitions. [2021-10-28 09:44:36,628 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 87 [2021-10-28 09:44:36,634 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 138 states to 131 states and 189 transitions. [2021-10-28 09:44:36,636 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 131 [2021-10-28 09:44:36,637 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 131 [2021-10-28 09:44:36,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 131 states and 189 transitions. [2021-10-28 09:44:36,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:44:36,643 INFO L681 BuchiCegarLoop]: Abstraction has 131 states and 189 transitions. [2021-10-28 09:44:36,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states and 189 transitions. [2021-10-28 09:44:36,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2021-10-28 09:44:36,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 131 states have (on average 1.4427480916030535) internal successors, (189), 130 states have internal predecessors, (189), 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 09:44:36,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 189 transitions. [2021-10-28 09:44:36,703 INFO L704 BuchiCegarLoop]: Abstraction has 131 states and 189 transitions. [2021-10-28 09:44:36,703 INFO L587 BuchiCegarLoop]: Abstraction has 131 states and 189 transitions. [2021-10-28 09:44:36,703 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 09:44:36,703 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 131 states and 189 transitions. [2021-10-28 09:44:36,706 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 87 [2021-10-28 09:44:36,707 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:44:36,707 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:44:36,708 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-28 09:44:36,708 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:44:36,708 INFO L791 eck$LassoCheckResult]: Stem: 413#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~string27.base, #t~string27.offset := #Ultimate.allocOnStack(30);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(9);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(21);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(30);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(9);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(21);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(30);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(9);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(25);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(30);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(9);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(25);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(13);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string47.base, #t~string47.offset, 1);call write~init~int(77, #t~string47.base, 1 + #t~string47.offset, 1);call write~init~int(101, #t~string47.base, 2 + #t~string47.offset, 1);call write~init~int(116, #t~string47.base, 3 + #t~string47.offset, 1);call write~init~int(104, #t~string47.base, 4 + #t~string47.offset, 1);call write~init~int(58, #t~string47.base, 5 + #t~string47.offset, 1);call write~init~int(0, #t~string47.base, 6 + #t~string47.offset, 1);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string49.base, #t~string49.offset, 1);call write~init~int(82, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(73, #t~string49.base, 2 + #t~string49.offset, 1);call write~init~int(84, #t~string49.base, 3 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 4 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string51.base, #t~string51.offset, 1);call write~init~int(75, #t~string51.base, 1 + #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 2 + #t~string51.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string53.base, #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 1 + #t~string53.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(13);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(110, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 3 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string72.base, #t~string72.offset, 1);call write~init~int(80, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(117, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(109, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(112, #t~string72.base, 4 + #t~string72.offset, 1);call write~init~int(58, #t~string72.base, 5 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 6 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string74.base, #t~string74.offset, 1);call write~init~int(110, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string76.base, #t~string76.offset, 1);call write~init~int(102, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(102, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 3 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string78.base, #t~string78.offset, 1);call write~init~int(32, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 358#L-1 havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 359#L176 havoc valid_product_#res;havoc valid_product_~retValue_acc~2;havoc valid_product_~retValue_acc~2;valid_product_~retValue_acc~2 := 1;valid_product_#res := valid_product_~retValue_acc~2; 364#L184 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 374#L140 assume 0 != main_~tmp~0; 375#L113 havoc test_#t~nondet57, test_#t~nondet58, test_#t~nondet59, test_#t~nondet60, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 398#L689-1 [2021-10-28 09:44:36,708 INFO L793 eck$LassoCheckResult]: Loop: 398#L689-1 assume !false; 336#L720 assume test_~splverifierCounter~0 < 4; 337#L721 test_~tmp~5 := test_#t~nondet57;havoc test_#t~nondet57; 349#L729 assume !(0 != test_~tmp~5); 351#L729-1 test_~tmp___0~1 := test_#t~nondet58;havoc test_#t~nondet58; 285#L739 assume !(0 != test_~tmp___0~1); 286#L739-1 test_~tmp___2~0 := test_#t~nondet59;havoc test_#t~nondet59; 296#L749 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 297#L757-2 assume !(0 != ~pumpRunning~0); 372#L785 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret62, processEnvironment_~tmp~7;havoc processEnvironment_~tmp~7; 392#L843 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret61, processEnvironment__wrappee__highWaterSensor_~tmp~6;havoc processEnvironment__wrappee__highWaterSensor_~tmp~6; 393#L817-1 assume !(0 == ~pumpRunning~0); 315#L792 havoc __utac_acc__Specification3_spec__1_#t~ret54, __utac_acc__Specification3_spec__1_#t~ret55, __utac_acc__Specification3_spec__1_#t~ret56, __utac_acc__Specification3_spec__1_~tmp~4, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~4;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;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; 316#L613-2 __utac_acc__Specification3_spec__1_#t~ret54 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~4 := __utac_acc__Specification3_spec__1_#t~ret54;havoc __utac_acc__Specification3_spec__1_#t~ret54; 397#L683 assume 0 != __utac_acc__Specification3_spec__1_~tmp~4; 398#L689-1 [2021-10-28 09:44:36,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:44:36,709 INFO L85 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-10-28 09:44:36,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:44:36,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460094611] [2021-10-28 09:44:36,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:44:36,710 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:44:36,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:44:36,776 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:44:36,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:44:36,848 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:44:36,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:44:36,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1068993921, now seen corresponding path program 1 times [2021-10-28 09:44:36,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:44:36,850 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345298508] [2021-10-28 09:44:36,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:44:36,850 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:44:36,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:44:36,868 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 09:44:36,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:44:36,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345298508] [2021-10-28 09:44:36,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345298508] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:44:36,869 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:44:36,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:44:36,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326291133] [2021-10-28 09:44:36,870 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:44:36,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:44:36,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:44:36,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:44:36,871 INFO L87 Difference]: Start difference. First operand 131 states and 189 transitions. cyclomatic complexity: 60 Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:44:36,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:44:36,950 INFO L93 Difference]: Finished difference Result 178 states and 246 transitions. [2021-10-28 09:44:36,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:44:36,951 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 178 states and 246 transitions. [2021-10-28 09:44:36,954 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 122 [2021-10-28 09:44:36,956 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 178 states to 178 states and 246 transitions. [2021-10-28 09:44:36,956 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 178 [2021-10-28 09:44:36,957 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 178 [2021-10-28 09:44:36,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 178 states and 246 transitions. [2021-10-28 09:44:36,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:44:36,958 INFO L681 BuchiCegarLoop]: Abstraction has 178 states and 246 transitions. [2021-10-28 09:44:36,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states and 246 transitions. [2021-10-28 09:44:36,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2021-10-28 09:44:36,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 178 states have (on average 1.3820224719101124) internal successors, (246), 177 states have internal predecessors, (246), 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 09:44:36,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 246 transitions. [2021-10-28 09:44:36,985 INFO L704 BuchiCegarLoop]: Abstraction has 178 states and 246 transitions. [2021-10-28 09:44:36,985 INFO L587 BuchiCegarLoop]: Abstraction has 178 states and 246 transitions. [2021-10-28 09:44:36,985 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 09:44:36,985 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 178 states and 246 transitions. [2021-10-28 09:44:36,987 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 122 [2021-10-28 09:44:36,987 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:44:36,987 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:44:36,988 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-28 09:44:36,988 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] [2021-10-28 09:44:36,988 INFO L791 eck$LassoCheckResult]: Stem: 733#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~string27.base, #t~string27.offset := #Ultimate.allocOnStack(30);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(9);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(21);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(30);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(9);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(21);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(30);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(9);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(25);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(30);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(9);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(25);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(13);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string47.base, #t~string47.offset, 1);call write~init~int(77, #t~string47.base, 1 + #t~string47.offset, 1);call write~init~int(101, #t~string47.base, 2 + #t~string47.offset, 1);call write~init~int(116, #t~string47.base, 3 + #t~string47.offset, 1);call write~init~int(104, #t~string47.base, 4 + #t~string47.offset, 1);call write~init~int(58, #t~string47.base, 5 + #t~string47.offset, 1);call write~init~int(0, #t~string47.base, 6 + #t~string47.offset, 1);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string49.base, #t~string49.offset, 1);call write~init~int(82, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(73, #t~string49.base, 2 + #t~string49.offset, 1);call write~init~int(84, #t~string49.base, 3 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 4 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string51.base, #t~string51.offset, 1);call write~init~int(75, #t~string51.base, 1 + #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 2 + #t~string51.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string53.base, #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 1 + #t~string53.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(13);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(110, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 3 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string72.base, #t~string72.offset, 1);call write~init~int(80, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(117, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(109, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(112, #t~string72.base, 4 + #t~string72.offset, 1);call write~init~int(58, #t~string72.base, 5 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 6 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string74.base, #t~string74.offset, 1);call write~init~int(110, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string76.base, #t~string76.offset, 1);call write~init~int(102, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(102, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 3 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string78.base, #t~string78.offset, 1);call write~init~int(32, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 673#L-1 havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 674#L176 havoc valid_product_#res;havoc valid_product_~retValue_acc~2;havoc valid_product_~retValue_acc~2;valid_product_~retValue_acc~2 := 1;valid_product_#res := valid_product_~retValue_acc~2; 679#L184 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 688#L140 assume 0 != main_~tmp~0; 689#L113 havoc test_#t~nondet57, test_#t~nondet58, test_#t~nondet59, test_#t~nondet60, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 713#L689-1 [2021-10-28 09:44:36,989 INFO L793 eck$LassoCheckResult]: Loop: 713#L689-1 assume !false; 651#L720 assume test_~splverifierCounter~0 < 4; 652#L721 test_~tmp~5 := test_#t~nondet57;havoc test_#t~nondet57; 664#L729 assume !(0 != test_~tmp~5); 666#L729-1 test_~tmp___0~1 := test_#t~nondet58;havoc test_#t~nondet58; 600#L739 assume !(0 != test_~tmp___0~1); 601#L739-1 test_~tmp___2~0 := test_#t~nondet59;havoc test_#t~nondet59; 612#L749 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 613#L757-2 assume !(0 != ~pumpRunning~0); 687#L785 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret62, processEnvironment_~tmp~7;havoc processEnvironment_~tmp~7; 707#L843 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret61, processEnvironment__wrappee__highWaterSensor_~tmp~6;havoc processEnvironment__wrappee__highWaterSensor_~tmp~6; 708#L817-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret81, isHighWaterLevel_~retValue_acc~12, isHighWaterLevel_~tmp~9, isHighWaterLevel_~tmp___0~2;havoc isHighWaterLevel_~retValue_acc~12;havoc isHighWaterLevel_~tmp~9;havoc isHighWaterLevel_~tmp___0~2;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~8;havoc isHighWaterSensorDry_~retValue_acc~8; 682#L653-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~8 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~8; 619#L658-1 isHighWaterLevel_#t~ret81 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~9 := isHighWaterLevel_#t~ret81;havoc isHighWaterLevel_#t~ret81; 620#L963-3 assume 0 != isHighWaterLevel_~tmp~9;isHighWaterLevel_~tmp___0~2 := 0; 635#L963-5 isHighWaterLevel_~retValue_acc~12 := isHighWaterLevel_~tmp___0~2;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~12; 636#L969-1 processEnvironment__wrappee__highWaterSensor_#t~ret61 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~6 := processEnvironment__wrappee__highWaterSensor_#t~ret61;havoc processEnvironment__wrappee__highWaterSensor_#t~ret61; 681#L821-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~6); 633#L792 havoc __utac_acc__Specification3_spec__1_#t~ret54, __utac_acc__Specification3_spec__1_#t~ret55, __utac_acc__Specification3_spec__1_#t~ret56, __utac_acc__Specification3_spec__1_~tmp~4, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~4;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;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; 634#L613-2 __utac_acc__Specification3_spec__1_#t~ret54 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~4 := __utac_acc__Specification3_spec__1_#t~ret54;havoc __utac_acc__Specification3_spec__1_#t~ret54; 712#L683 assume 0 != __utac_acc__Specification3_spec__1_~tmp~4; 713#L689-1 [2021-10-28 09:44:36,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:44:36,989 INFO L85 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-10-28 09:44:36,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:44:36,990 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082732574] [2021-10-28 09:44:36,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:44:36,990 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:44:37,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:44:37,102 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:44:37,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:44:37,190 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:44:37,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:44:37,191 INFO L85 PathProgramCache]: Analyzing trace with hash 87587051, now seen corresponding path program 1 times [2021-10-28 09:44:37,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:44:37,192 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351083588] [2021-10-28 09:44:37,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:44:37,192 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:44:37,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:44:37,201 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:44:37,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:44:37,223 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:44:37,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:44:37,224 INFO L85 PathProgramCache]: Analyzing trace with hash 543658245, now seen corresponding path program 1 times [2021-10-28 09:44:37,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:44:37,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89554919] [2021-10-28 09:44:37,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:44:37,224 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:44:37,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:44:37,306 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 09:44:37,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:44:37,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89554919] [2021-10-28 09:44:37,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89554919] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:44:37,307 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:44:37,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:44:37,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145315638] [2021-10-28 09:44:37,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:44:37,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:44:37,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:44:37,576 INFO L87 Difference]: Start difference. First operand 178 states and 246 transitions. cyclomatic complexity: 70 Second operand has 5 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:44:37,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:44:37,791 INFO L93 Difference]: Finished difference Result 621 states and 863 transitions. [2021-10-28 09:44:37,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:44:37,792 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 621 states and 863 transitions. [2021-10-28 09:44:37,801 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 452 [2021-10-28 09:44:37,811 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 621 states to 621 states and 863 transitions. [2021-10-28 09:44:37,811 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 621 [2021-10-28 09:44:37,813 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 621 [2021-10-28 09:44:37,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 621 states and 863 transitions. [2021-10-28 09:44:37,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:44:37,821 INFO L681 BuchiCegarLoop]: Abstraction has 621 states and 863 transitions. [2021-10-28 09:44:37,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states and 863 transitions. [2021-10-28 09:44:37,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 350. [2021-10-28 09:44:37,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 350 states have (on average 1.3657142857142857) internal successors, (478), 349 states have internal predecessors, (478), 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 09:44:37,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 478 transitions. [2021-10-28 09:44:37,864 INFO L704 BuchiCegarLoop]: Abstraction has 350 states and 478 transitions. [2021-10-28 09:44:37,864 INFO L587 BuchiCegarLoop]: Abstraction has 350 states and 478 transitions. [2021-10-28 09:44:37,864 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-28 09:44:37,864 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 350 states and 478 transitions. [2021-10-28 09:44:37,868 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 244 [2021-10-28 09:44:37,869 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:44:37,869 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:44:37,871 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-28 09:44:37,871 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:44:37,872 INFO L791 eck$LassoCheckResult]: Stem: 1572#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~string27.base, #t~string27.offset := #Ultimate.allocOnStack(30);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(9);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(21);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(30);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(9);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(21);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(30);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(9);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(25);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(30);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(9);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(25);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(13);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string47.base, #t~string47.offset, 1);call write~init~int(77, #t~string47.base, 1 + #t~string47.offset, 1);call write~init~int(101, #t~string47.base, 2 + #t~string47.offset, 1);call write~init~int(116, #t~string47.base, 3 + #t~string47.offset, 1);call write~init~int(104, #t~string47.base, 4 + #t~string47.offset, 1);call write~init~int(58, #t~string47.base, 5 + #t~string47.offset, 1);call write~init~int(0, #t~string47.base, 6 + #t~string47.offset, 1);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string49.base, #t~string49.offset, 1);call write~init~int(82, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(73, #t~string49.base, 2 + #t~string49.offset, 1);call write~init~int(84, #t~string49.base, 3 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 4 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string51.base, #t~string51.offset, 1);call write~init~int(75, #t~string51.base, 1 + #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 2 + #t~string51.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string53.base, #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 1 + #t~string53.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(13);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(110, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 3 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string72.base, #t~string72.offset, 1);call write~init~int(80, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(117, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(109, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(112, #t~string72.base, 4 + #t~string72.offset, 1);call write~init~int(58, #t~string72.base, 5 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 6 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string74.base, #t~string74.offset, 1);call write~init~int(110, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string76.base, #t~string76.offset, 1);call write~init~int(102, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(102, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 3 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string78.base, #t~string78.offset, 1);call write~init~int(32, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 1495#L-1 havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 1496#L176 havoc valid_product_#res;havoc valid_product_~retValue_acc~2;havoc valid_product_~retValue_acc~2;valid_product_~retValue_acc~2 := 1;valid_product_#res := valid_product_~retValue_acc~2; 1501#L184 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 1512#L140 assume 0 != main_~tmp~0; 1513#L113 havoc test_#t~nondet57, test_#t~nondet58, test_#t~nondet59, test_#t~nondet60, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1561#L689-1 [2021-10-28 09:44:37,872 INFO L793 eck$LassoCheckResult]: Loop: 1561#L689-1 assume !false; 1721#L720 assume test_~splverifierCounter~0 < 4; 1547#L721 test_~tmp~5 := test_#t~nondet57;havoc test_#t~nondet57; 1486#L729 assume !(0 != test_~tmp~5); 1488#L729-1 test_~tmp___0~1 := test_#t~nondet58;havoc test_#t~nondet58; 1764#L739 assume !(0 != test_~tmp___0~1); 1763#L739-1 test_~tmp___2~0 := test_#t~nondet59;havoc test_#t~nondet59; 1762#L749 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 1760#L757-2 assume !(0 != ~pumpRunning~0); 1741#L785 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret62, processEnvironment_~tmp~7;havoc processEnvironment_~tmp~7; 1736#L843 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret61, processEnvironment__wrappee__highWaterSensor_~tmp~6;havoc processEnvironment__wrappee__highWaterSensor_~tmp~6; 1735#L817-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret81, isHighWaterLevel_~retValue_acc~12, isHighWaterLevel_~tmp~9, isHighWaterLevel_~tmp___0~2;havoc isHighWaterLevel_~retValue_acc~12;havoc isHighWaterLevel_~tmp~9;havoc isHighWaterLevel_~tmp___0~2;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~8;havoc isHighWaterSensorDry_~retValue_acc~8; 1734#L653-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~8 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~8; 1733#L658-1 isHighWaterLevel_#t~ret81 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~9 := isHighWaterLevel_#t~ret81;havoc isHighWaterLevel_#t~ret81; 1731#L963-3 assume 0 != isHighWaterLevel_~tmp~9;isHighWaterLevel_~tmp___0~2 := 0; 1729#L963-5 isHighWaterLevel_~retValue_acc~12 := isHighWaterLevel_~tmp___0~2;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~12; 1728#L969-1 processEnvironment__wrappee__highWaterSensor_#t~ret61 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~6 := processEnvironment__wrappee__highWaterSensor_#t~ret61;havoc processEnvironment__wrappee__highWaterSensor_#t~ret61; 1722#L821-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~6); 1484#L792 havoc __utac_acc__Specification3_spec__1_#t~ret54, __utac_acc__Specification3_spec__1_#t~ret55, __utac_acc__Specification3_spec__1_#t~ret56, __utac_acc__Specification3_spec__1_~tmp~4, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~4;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;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; 1548#L613-2 __utac_acc__Specification3_spec__1_#t~ret54 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~4 := __utac_acc__Specification3_spec__1_#t~ret54;havoc __utac_acc__Specification3_spec__1_#t~ret54; 1549#L683 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~4);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; 1579#L645 __utac_acc__Specification3_spec__1_#t~ret55 := getWaterLevel_#res;__utac_acc__Specification3_spec__1_~tmp___0~0 := __utac_acc__Specification3_spec__1_#t~ret55;havoc __utac_acc__Specification3_spec__1_#t~ret55; 1580#L689 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~0); 1561#L689-1 [2021-10-28 09:44:37,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:44:37,873 INFO L85 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 4 times [2021-10-28 09:44:37,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:44:37,873 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106885253] [2021-10-28 09:44:37,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:44:37,874 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:44:37,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:44:37,943 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:44:37,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:44:38,017 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:44:38,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:44:38,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1728181283, now seen corresponding path program 1 times [2021-10-28 09:44:38,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:44:38,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138344476] [2021-10-28 09:44:38,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:44:38,020 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:44:38,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:44:38,031 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:44:38,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:44:38,051 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:44:38,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:44:38,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1530428041, now seen corresponding path program 1 times [2021-10-28 09:44:38,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:44:38,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436322455] [2021-10-28 09:44:38,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:44:38,053 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:44:38,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:44:38,117 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:44:38,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:44:38,196 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:45:40,839 WARN L207 SmtUtils]: Spent 1.04 m on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-10-28 09:46:42,114 WARN L207 SmtUtils]: Spent 31.19 s on a formula simplification that was a NOOP. DAG size: 433 [2021-10-28 09:46:42,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 09:46:42 BoogieIcfgContainer [2021-10-28 09:46:42,278 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 09:46:42,279 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:46:42,279 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:46:42,279 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:46:42,280 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:44:35" (3/4) ... [2021-10-28 09:46:42,283 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-28 09:46:42,354 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0c8b126-2794-41d1-90f6-d23952616c46/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:46:42,359 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:46:42,360 INFO L168 Benchmark]: Toolchain (without parser) took 128301.25 ms. Allocated memory was 88.1 MB in the beginning and 140.5 MB in the end (delta: 52.4 MB). Free memory was 59.8 MB in the beginning and 99.6 MB in the end (delta: -39.8 MB). Peak memory consumption was 12.3 MB. Max. memory is 16.1 GB. [2021-10-28 09:46:42,361 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 88.1 MB. Free memory is still 43.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:46:42,362 INFO L168 Benchmark]: CACSL2BoogieTranslator took 587.18 ms. Allocated memory was 88.1 MB in the beginning and 113.2 MB in the end (delta: 25.2 MB). Free memory was 59.5 MB in the beginning and 82.3 MB in the end (delta: -22.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:46:42,362 INFO L168 Benchmark]: Boogie Procedure Inliner took 124.64 ms. Allocated memory is still 113.2 MB. Free memory was 82.3 MB in the beginning and 78.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:46:42,363 INFO L168 Benchmark]: Boogie Preprocessor took 103.88 ms. Allocated memory is still 113.2 MB. Free memory was 78.1 MB in the beginning and 75.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:46:42,363 INFO L168 Benchmark]: RCFGBuilder took 942.12 ms. Allocated memory is still 113.2 MB. Free memory was 75.0 MB in the beginning and 68.3 MB in the end (delta: 6.7 MB). Peak memory consumption was 31.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:46:42,364 INFO L168 Benchmark]: BuchiAutomizer took 126452.90 ms. Allocated memory was 113.2 MB in the beginning and 140.5 MB in the end (delta: 27.3 MB). Free memory was 68.3 MB in the beginning and 101.7 MB in the end (delta: -33.4 MB). Peak memory consumption was 66.7 MB. Max. memory is 16.1 GB. [2021-10-28 09:46:42,365 INFO L168 Benchmark]: Witness Printer took 80.52 ms. Allocated memory is still 140.5 MB. Free memory was 101.7 MB in the beginning and 99.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:46:42,367 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 88.1 MB. Free memory is still 43.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 587.18 ms. Allocated memory was 88.1 MB in the beginning and 113.2 MB in the end (delta: 25.2 MB). Free memory was 59.5 MB in the beginning and 82.3 MB in the end (delta: -22.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 124.64 ms. Allocated memory is still 113.2 MB. Free memory was 82.3 MB in the beginning and 78.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 103.88 ms. Allocated memory is still 113.2 MB. Free memory was 78.1 MB in the beginning and 75.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 942.12 ms. Allocated memory is still 113.2 MB. Free memory was 75.0 MB in the beginning and 68.3 MB in the end (delta: 6.7 MB). Peak memory consumption was 31.1 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 126452.90 ms. Allocated memory was 113.2 MB in the beginning and 140.5 MB in the end (delta: 27.3 MB). Free memory was 68.3 MB in the beginning and 101.7 MB in the end (delta: -33.4 MB). Peak memory consumption was 66.7 MB. Max. memory is 16.1 GB. * Witness Printer took 80.52 ms. Allocated memory is still 140.5 MB. Free memory was 101.7 MB in the beginning and 99.6 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 350 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 126.3s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 125.6s. Construction of modules took 0.1s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 271 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 350 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 632 SDtfs, 1088 SDslu, 934 SDs, 0 SdLazy, 138 SolverSat, 54 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: 719]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=3275} State at position 1 is {NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@24db75fb=0, NULL=3275, NULL=0, NULL=0, methaneLevelCritical=0, NULL=3276, tmp=0, NULL=0, NULL=3289, tmp___1=0, NULL=3284, NULL=0, NULL=3288, NULL=3281, cleanupTimeShifts=4, tmp=0, NULL=3291, NULL=0, waterLevel=1, NULL=0, NULL=0, NULL=0, \result=1, head=0, pumpRunning=0, retValue_acc=1, tmp=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@553d9b76=0, NULL=3277, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5a0f204=0, \result=1, NULL=0, NULL=0, retValue_acc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@26d83a52=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4ee6af4d=0, NULL=0, NULL=0, retValue_acc=1, NULL=3286, tmp___0=0, tmp=1, NULL=3300, head=0, NULL=0, NULL=3285, NULL=3296, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4287bd30=0, NULL=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@22d1a4f3=0, NULL=0, retValue_acc=0, NULL=0, NULL=3282, NULL=3278, NULL=3287, tmp___0=0, NULL=0, NULL=3290, NULL=3283, NULL=0, NULL=0, tmp___0=1, NULL=3293, NULL=3298, tmp=0, NULL=3299, NULL=0, NULL=0, systemActive=1, \result=1, NULL=0, retValue_acc=0, \result=0, NULL=3292, NULL=0, NULL=3302, NULL=3280, \result=0, NULL=3303, NULL=0, NULL=3297, retValue_acc=1, tmp___2=66, splverifierCounter=0, NULL=0, \result=0, NULL=3295, NULL=3279, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@25ed8765=66, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@501f9749=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5ca42579=0, tmp___1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4206a6a5=0, NULL=3294, NULL=3301} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L50] int cleanupTimeShifts = 4; [L358] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L570] int waterLevel = 1; [L571] int methaneLevelCritical = 0; [L778] int pumpRunning = 0; [L779] int systemActive = 1; [L131] int retValue_acc ; [L132] int tmp ; [L180] int retValue_acc ; [L183] retValue_acc = 1 [L184] return (retValue_acc); [L138] tmp = valid_product() [L140] COND TRUE \read(tmp) [L710] int splverifierCounter ; [L711] int tmp ; [L712] int tmp___0 ; [L713] int tmp___1 ; [L714] int tmp___2 ; [L717] splverifierCounter = 0 Loop: [L719] COND TRUE 1 [L721] COND TRUE splverifierCounter < 4 [L727] tmp = __VERIFIER_nondet_int() [L729] COND FALSE !(\read(tmp)) [L737] tmp___0 = __VERIFIER_nondet_int() [L739] COND FALSE !(\read(tmp___0)) [L747] tmp___2 = __VERIFIER_nondet_int() [L749] COND TRUE \read(tmp___2) [L996] systemActive = 1 [L785] COND FALSE !(\read(pumpRunning)) [L792] COND TRUE \read(systemActive) [L840] int tmp ; [L843] COND FALSE !(\read(pumpRunning)) [L814] int tmp ; [L817] COND TRUE ! pumpRunning [L955] int retValue_acc ; [L956] int tmp ; [L957] int tmp___0 ; [L650] int retValue_acc ; [L653] COND TRUE waterLevel < 2 [L654] retValue_acc = 1 [L655] return (retValue_acc); [L961] tmp = isHighWaterSensorDry() [L963] COND TRUE \read(tmp) [L964] tmp___0 = 0 [L968] retValue_acc = tmp___0 [L969] return (retValue_acc); [L819] tmp = isHighWaterLevel() [L821] COND FALSE !(\read(tmp)) [L675] int tmp ; [L676] int tmp___0 ; [L677] int tmp___1 ; [L609] int retValue_acc ; [L612] retValue_acc = methaneLevelCritical [L613] return (retValue_acc); [L681] tmp = isMethaneLevelCritical() [L683] COND FALSE !(\read(tmp)) [L641] int retValue_acc ; [L644] retValue_acc = waterLevel [L645] return (retValue_acc); [L687] tmp___0 = getWaterLevel() [L689] COND FALSE !(tmp___0 == 2) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-28 09:46:42,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0c8b126-2794-41d1-90f6-d23952616c46/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...