./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_product22.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f30985-eee6-47ad-adab-eb5f6daa0721/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f30985-eee6-47ad-adab-eb5f6daa0721/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f30985-eee6-47ad-adab-eb5f6daa0721/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f30985-eee6-47ad-adab-eb5f6daa0721/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product22.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f30985-eee6-47ad-adab-eb5f6daa0721/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f30985-eee6-47ad-adab-eb5f6daa0721/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6f5537df08751fc2a74719abc7c5b127397286d2c5902c5d863d2b34b0e39614 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 18:50:15,190 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 18:50:15,192 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 18:50:15,222 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 18:50:15,222 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 18:50:15,224 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 18:50:15,225 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 18:50:15,227 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 18:50:15,229 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 18:50:15,230 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 18:50:15,231 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 18:50:15,232 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 18:50:15,233 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 18:50:15,234 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 18:50:15,235 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 18:50:15,237 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 18:50:15,238 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 18:50:15,239 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 18:50:15,241 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 18:50:15,243 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 18:50:15,245 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 18:50:15,246 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 18:50:15,248 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 18:50:15,248 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 18:50:15,252 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 18:50:15,252 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 18:50:15,253 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 18:50:15,254 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 18:50:15,254 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 18:50:15,256 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 18:50:15,256 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 18:50:15,257 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 18:50:15,258 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 18:50:15,258 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 18:50:15,259 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 18:50:15,260 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 18:50:15,260 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 18:50:15,260 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 18:50:15,261 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 18:50:15,261 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 18:50:15,262 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 18:50:15,263 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f30985-eee6-47ad-adab-eb5f6daa0721/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 18:50:15,286 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 18:50:15,286 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 18:50:15,286 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 18:50:15,287 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 18:50:15,287 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 18:50:15,287 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 18:50:15,288 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 18:50:15,288 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 18:50:15,288 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 18:50:15,288 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 18:50:15,288 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 18:50:15,288 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 18:50:15,288 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 18:50:15,289 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 18:50:15,289 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 18:50:15,289 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 18:50:15,289 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 18:50:15,289 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 18:50:15,289 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 18:50:15,289 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 18:50:15,289 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 18:50:15,290 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 18:50:15,290 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 18:50:15,290 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 18:50:15,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:50:15,290 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 18:50:15,290 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 18:50:15,290 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 18:50:15,291 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 18:50:15,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 18:50:15,291 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 18:50:15,291 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 18:50:15,291 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 18:50:15,291 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 18:50:15,291 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_90f30985-eee6-47ad-adab-eb5f6daa0721/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f30985-eee6-47ad-adab-eb5f6daa0721/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6f5537df08751fc2a74719abc7c5b127397286d2c5902c5d863d2b34b0e39614 [2021-12-06 18:50:15,485 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 18:50:15,500 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 18:50:15,502 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 18:50:15,502 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 18:50:15,503 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 18:50:15,504 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f30985-eee6-47ad-adab-eb5f6daa0721/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/product-lines/minepump_spec3_product22.cil.c [2021-12-06 18:50:15,546 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f30985-eee6-47ad-adab-eb5f6daa0721/bin/uautomizer-DrprNOufMa/data/da1f9b364/4323d0461a7f48faa1d3d58c4aa6f846/FLAGa76e60716 [2021-12-06 18:50:16,000 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 18:50:16,001 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f30985-eee6-47ad-adab-eb5f6daa0721/sv-benchmarks/c/product-lines/minepump_spec3_product22.cil.c [2021-12-06 18:50:16,015 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f30985-eee6-47ad-adab-eb5f6daa0721/bin/uautomizer-DrprNOufMa/data/da1f9b364/4323d0461a7f48faa1d3d58c4aa6f846/FLAGa76e60716 [2021-12-06 18:50:16,528 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f30985-eee6-47ad-adab-eb5f6daa0721/bin/uautomizer-DrprNOufMa/data/da1f9b364/4323d0461a7f48faa1d3d58c4aa6f846 [2021-12-06 18:50:16,531 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 18:50:16,532 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 18:50:16,533 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 18:50:16,534 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 18:50:16,536 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 18:50:16,537 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:50:16" (1/1) ... [2021-12-06 18:50:16,538 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62cea1c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:50:16, skipping insertion in model container [2021-12-06 18:50:16,538 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:50:16" (1/1) ... [2021-12-06 18:50:16,545 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 18:50:16,574 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 18:50:16,688 WARN L230 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_90f30985-eee6-47ad-adab-eb5f6daa0721/sv-benchmarks/c/product-lines/minepump_spec3_product22.cil.c[2984,2997] [2021-12-06 18:50:16,749 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:50:16,756 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 18:50:16,770 WARN L230 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_90f30985-eee6-47ad-adab-eb5f6daa0721/sv-benchmarks/c/product-lines/minepump_spec3_product22.cil.c[2984,2997] [2021-12-06 18:50:16,822 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:50:16,834 INFO L208 MainTranslator]: Completed translation [2021-12-06 18:50:16,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:50:16 WrapperNode [2021-12-06 18:50:16,835 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 18:50:16,836 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 18:50:16,836 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 18:50:16,836 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 18:50:16,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:50:16" (1/1) ... [2021-12-06 18:50:16,852 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:50:16" (1/1) ... [2021-12-06 18:50:16,870 INFO L137 Inliner]: procedures = 54, calls = 155, calls flagged for inlining = 21, calls inlined = 18, statements flattened = 246 [2021-12-06 18:50:16,870 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 18:50:16,871 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 18:50:16,871 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 18:50:16,871 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 18:50:16,877 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:50:16" (1/1) ... [2021-12-06 18:50:16,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:50:16" (1/1) ... [2021-12-06 18:50:16,880 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:50:16" (1/1) ... [2021-12-06 18:50:16,880 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:50:16" (1/1) ... [2021-12-06 18:50:16,884 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:50:16" (1/1) ... [2021-12-06 18:50:16,888 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:50:16" (1/1) ... [2021-12-06 18:50:16,889 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:50:16" (1/1) ... [2021-12-06 18:50:16,891 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 18:50:16,892 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 18:50:16,892 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 18:50:16,892 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 18:50:16,893 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:50:16" (1/1) ... [2021-12-06 18:50:16,899 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:50:16,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f30985-eee6-47ad-adab-eb5f6daa0721/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:50:16,917 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f30985-eee6-47ad-adab-eb5f6daa0721/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 18:50:16,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f30985-eee6-47ad-adab-eb5f6daa0721/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 18:50:16,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 18:50:16,953 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-12-06 18:50:16,953 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-12-06 18:50:16,953 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-12-06 18:50:16,953 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-12-06 18:50:16,954 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-12-06 18:50:16,954 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-12-06 18:50:16,954 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-12-06 18:50:16,954 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-12-06 18:50:16,954 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-12-06 18:50:16,954 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-12-06 18:50:16,954 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2021-12-06 18:50:16,955 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2021-12-06 18:50:16,955 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-12-06 18:50:16,955 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-12-06 18:50:16,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 18:50:16,955 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-12-06 18:50:16,955 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-12-06 18:50:16,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 18:50:16,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 18:50:17,020 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 18:50:17,022 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 18:50:17,233 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 18:50:17,241 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 18:50:17,241 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-06 18:50:17,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:50:17 BoogieIcfgContainer [2021-12-06 18:50:17,243 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 18:50:17,245 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 18:50:17,245 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 18:50:17,248 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 18:50:17,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 06:50:16" (1/3) ... [2021-12-06 18:50:17,249 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42d06c33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:50:17, skipping insertion in model container [2021-12-06 18:50:17,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:50:16" (2/3) ... [2021-12-06 18:50:17,249 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42d06c33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:50:17, skipping insertion in model container [2021-12-06 18:50:17,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:50:17" (3/3) ... [2021-12-06 18:50:17,251 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product22.cil.c [2021-12-06 18:50:17,255 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 18:50:17,256 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 18:50:17,292 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 18:50:17,297 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 18:50:17,297 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 18:50:17,313 INFO L276 IsEmpty]: Start isEmpty. Operand has 90 states, 66 states have (on average 1.378787878787879) internal successors, (91), 74 states have internal predecessors, (91), 14 states have call successors, (14), 8 states have call predecessors, (14), 8 states have return successors, (14), 10 states have call predecessors, (14), 14 states have call successors, (14) [2021-12-06 18:50:17,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-06 18:50:17,321 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:50:17,321 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:50:17,322 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:50:17,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:50:17,328 INFO L85 PathProgramCache]: Analyzing trace with hash -789886213, now seen corresponding path program 1 times [2021-12-06 18:50:17,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:50:17,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274574158] [2021-12-06 18:50:17,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:50:17,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:50:17,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:50:17,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 18:50:17,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:50:17,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:50:17,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:50:17,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274574158] [2021-12-06 18:50:17,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274574158] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:50:17,501 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:50:17,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 18:50:17,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564075987] [2021-12-06 18:50:17,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:50:17,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 18:50:17,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:50:17,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 18:50:17,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 18:50:17,536 INFO L87 Difference]: Start difference. First operand has 90 states, 66 states have (on average 1.378787878787879) internal successors, (91), 74 states have internal predecessors, (91), 14 states have call successors, (14), 8 states have call predecessors, (14), 8 states have return successors, (14), 10 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 18:50:17,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:50:17,563 INFO L93 Difference]: Finished difference Result 172 states and 233 transitions. [2021-12-06 18:50:17,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 18:50:17,565 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2021-12-06 18:50:17,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:50:17,574 INFO L225 Difference]: With dead ends: 172 [2021-12-06 18:50:17,574 INFO L226 Difference]: Without dead ends: 81 [2021-12-06 18:50:17,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 18:50:17,581 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:50:17,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:50:17,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-12-06 18:50:17,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2021-12-06 18:50:17,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 59 states have (on average 1.305084745762712) internal successors, (77), 66 states have internal predecessors, (77), 14 states have call successors, (14), 8 states have call predecessors, (14), 7 states have return successors, (13), 9 states have call predecessors, (13), 13 states have call successors, (13) [2021-12-06 18:50:17,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 104 transitions. [2021-12-06 18:50:17,614 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 104 transitions. Word has length 25 [2021-12-06 18:50:17,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:50:17,614 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 104 transitions. [2021-12-06 18:50:17,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 18:50:17,615 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 104 transitions. [2021-12-06 18:50:17,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-06 18:50:17,617 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:50:17,617 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:50:17,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 18:50:17,617 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:50:17,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:50:17,618 INFO L85 PathProgramCache]: Analyzing trace with hash -871661424, now seen corresponding path program 1 times [2021-12-06 18:50:17,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:50:17,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595918424] [2021-12-06 18:50:17,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:50:17,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:50:17,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:50:17,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 18:50:17,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:50:17,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:50:17,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:50:17,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595918424] [2021-12-06 18:50:17,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595918424] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:50:17,680 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:50:17,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:50:17,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079985421] [2021-12-06 18:50:17,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:50:17,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:50:17,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:50:17,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:50:17,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:50:17,683 INFO L87 Difference]: Start difference. First operand 81 states and 104 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 18:50:17,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:50:17,700 INFO L93 Difference]: Finished difference Result 127 states and 163 transitions. [2021-12-06 18:50:17,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:50:17,701 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2021-12-06 18:50:17,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:50:17,703 INFO L225 Difference]: With dead ends: 127 [2021-12-06 18:50:17,703 INFO L226 Difference]: Without dead ends: 72 [2021-12-06 18:50:17,704 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:50:17,706 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 13 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:50:17,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 165 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:50:17,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-12-06 18:50:17,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2021-12-06 18:50:17,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 53 states have (on average 1.320754716981132) internal successors, (70), 60 states have internal predecessors, (70), 11 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-06 18:50:17,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 92 transitions. [2021-12-06 18:50:17,718 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 92 transitions. Word has length 26 [2021-12-06 18:50:17,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:50:17,719 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 92 transitions. [2021-12-06 18:50:17,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 18:50:17,719 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 92 transitions. [2021-12-06 18:50:17,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-06 18:50:17,720 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:50:17,721 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:50:17,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 18:50:17,721 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:50:17,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:50:17,722 INFO L85 PathProgramCache]: Analyzing trace with hash 2116675096, now seen corresponding path program 1 times [2021-12-06 18:50:17,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:50:17,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535727695] [2021-12-06 18:50:17,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:50:17,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:50:17,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:50:17,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 18:50:17,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:50:17,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:50:17,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:50:17,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535727695] [2021-12-06 18:50:17,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535727695] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:50:17,770 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:50:17,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:50:17,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028346978] [2021-12-06 18:50:17,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:50:17,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:50:17,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:50:17,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:50:17,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:50:17,772 INFO L87 Difference]: Start difference. First operand 72 states and 92 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 18:50:17,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:50:17,790 INFO L93 Difference]: Finished difference Result 137 states and 178 transitions. [2021-12-06 18:50:17,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:50:17,791 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2021-12-06 18:50:17,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:50:17,792 INFO L225 Difference]: With dead ends: 137 [2021-12-06 18:50:17,792 INFO L226 Difference]: Without dead ends: 72 [2021-12-06 18:50:17,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:50:17,794 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 86 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:50:17,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 90 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:50:17,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-12-06 18:50:17,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2021-12-06 18:50:17,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 53 states have (on average 1.3018867924528301) internal successors, (69), 60 states have internal predecessors, (69), 11 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-06 18:50:17,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 91 transitions. [2021-12-06 18:50:17,802 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 91 transitions. Word has length 31 [2021-12-06 18:50:17,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:50:17,802 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 91 transitions. [2021-12-06 18:50:17,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 18:50:17,803 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 91 transitions. [2021-12-06 18:50:17,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-06 18:50:17,804 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:50:17,804 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:50:17,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 18:50:17,804 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:50:17,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:50:17,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1591959082, now seen corresponding path program 1 times [2021-12-06 18:50:17,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:50:17,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611680206] [2021-12-06 18:50:17,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:50:17,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:50:17,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:50:17,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 18:50:17,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:50:17,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 18:50:17,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:50:17,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 18:50:17,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:50:17,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:50:17,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:50:17,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611680206] [2021-12-06 18:50:17,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611680206] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:50:17,872 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:50:17,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 18:50:17,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84550637] [2021-12-06 18:50:17,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:50:17,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 18:50:17,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:50:17,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 18:50:17,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:50:17,873 INFO L87 Difference]: Start difference. First operand 72 states and 91 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 18:50:18,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:50:18,048 INFO L93 Difference]: Finished difference Result 229 states and 299 transitions. [2021-12-06 18:50:18,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 18:50:18,048 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 41 [2021-12-06 18:50:18,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:50:18,052 INFO L225 Difference]: With dead ends: 229 [2021-12-06 18:50:18,052 INFO L226 Difference]: Without dead ends: 164 [2021-12-06 18:50:18,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:50:18,055 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 132 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:50:18,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 341 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:50:18,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-12-06 18:50:18,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 130. [2021-12-06 18:50:18,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 94 states have (on average 1.297872340425532) internal successors, (122), 106 states have internal predecessors, (122), 22 states have call successors, (22), 14 states have call predecessors, (22), 13 states have return successors, (23), 13 states have call predecessors, (23), 22 states have call successors, (23) [2021-12-06 18:50:18,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 167 transitions. [2021-12-06 18:50:18,082 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 167 transitions. Word has length 41 [2021-12-06 18:50:18,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:50:18,082 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 167 transitions. [2021-12-06 18:50:18,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 18:50:18,083 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 167 transitions. [2021-12-06 18:50:18,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-06 18:50:18,085 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:50:18,086 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:50:18,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 18:50:18,086 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:50:18,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:50:18,087 INFO L85 PathProgramCache]: Analyzing trace with hash -355131473, now seen corresponding path program 1 times [2021-12-06 18:50:18,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:50:18,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449164197] [2021-12-06 18:50:18,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:50:18,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:50:18,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:50:18,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 18:50:18,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:50:18,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 18:50:18,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:50:18,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 18:50:18,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:50:18,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:50:18,145 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:50:18,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449164197] [2021-12-06 18:50:18,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449164197] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:50:18,146 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:50:18,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:50:18,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363043019] [2021-12-06 18:50:18,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:50:18,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 18:50:18,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:50:18,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 18:50:18,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:50:18,148 INFO L87 Difference]: Start difference. First operand 130 states and 167 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 18:50:18,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:50:18,190 INFO L93 Difference]: Finished difference Result 218 states and 281 transitions. [2021-12-06 18:50:18,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 18:50:18,190 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 43 [2021-12-06 18:50:18,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:50:18,192 INFO L225 Difference]: With dead ends: 218 [2021-12-06 18:50:18,192 INFO L226 Difference]: Without dead ends: 95 [2021-12-06 18:50:18,193 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:50:18,195 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 65 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:50:18,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 72 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:50:18,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-12-06 18:50:18,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2021-12-06 18:50:18,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 71 states have (on average 1.2112676056338028) internal successors, (86), 75 states have internal predecessors, (86), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2021-12-06 18:50:18,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 110 transitions. [2021-12-06 18:50:18,207 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 110 transitions. Word has length 43 [2021-12-06 18:50:18,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:50:18,208 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 110 transitions. [2021-12-06 18:50:18,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 18:50:18,208 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 110 transitions. [2021-12-06 18:50:18,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-06 18:50:18,210 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:50:18,210 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:50:18,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 18:50:18,210 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:50:18,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:50:18,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1452696708, now seen corresponding path program 1 times [2021-12-06 18:50:18,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:50:18,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849731141] [2021-12-06 18:50:18,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:50:18,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:50:18,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 18:50:18,232 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 18:50:18,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 18:50:18,271 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 18:50:18,271 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-06 18:50:18,272 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-06 18:50:18,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 18:50:18,277 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-12-06 18:50:18,279 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 18:50:18,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 06:50:18 BoogieIcfgContainer [2021-12-06 18:50:18,324 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 18:50:18,324 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 18:50:18,325 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 18:50:18,325 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 18:50:18,325 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:50:17" (3/4) ... [2021-12-06 18:50:18,327 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-06 18:50:18,386 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f30985-eee6-47ad-adab-eb5f6daa0721/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-06 18:50:18,386 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 18:50:18,387 INFO L158 Benchmark]: Toolchain (without parser) took 1854.89ms. Allocated memory is still 113.2MB. Free memory was 73.9MB in the beginning and 66.6MB in the end (delta: 7.3MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. [2021-12-06 18:50:18,387 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 113.2MB. Free memory was 91.2MB in the beginning and 91.1MB in the end (delta: 90.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 18:50:18,388 INFO L158 Benchmark]: CACSL2BoogieTranslator took 301.74ms. Allocated memory is still 113.2MB. Free memory was 73.7MB in the beginning and 86.9MB in the end (delta: -13.2MB). Peak memory consumption was 17.9MB. Max. memory is 16.1GB. [2021-12-06 18:50:18,388 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.87ms. Allocated memory is still 113.2MB. Free memory was 86.9MB in the beginning and 84.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 18:50:18,389 INFO L158 Benchmark]: Boogie Preprocessor took 20.52ms. Allocated memory is still 113.2MB. Free memory was 84.8MB in the beginning and 83.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 18:50:18,389 INFO L158 Benchmark]: RCFGBuilder took 351.15ms. Allocated memory is still 113.2MB. Free memory was 83.2MB in the beginning and 66.9MB in the end (delta: 16.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-12-06 18:50:18,389 INFO L158 Benchmark]: TraceAbstraction took 1079.18ms. Allocated memory is still 113.2MB. Free memory was 66.4MB in the beginning and 72.1MB in the end (delta: -5.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 18:50:18,390 INFO L158 Benchmark]: Witness Printer took 62.03ms. Allocated memory is still 113.2MB. Free memory was 71.6MB in the beginning and 66.6MB in the end (delta: 5.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-06 18:50:18,391 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 113.2MB. Free memory was 91.2MB in the beginning and 91.1MB in the end (delta: 90.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 301.74ms. Allocated memory is still 113.2MB. Free memory was 73.7MB in the beginning and 86.9MB in the end (delta: -13.2MB). Peak memory consumption was 17.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.87ms. Allocated memory is still 113.2MB. Free memory was 86.9MB in the beginning and 84.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.52ms. Allocated memory is still 113.2MB. Free memory was 84.8MB in the beginning and 83.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 351.15ms. Allocated memory is still 113.2MB. Free memory was 83.2MB in the beginning and 66.9MB in the end (delta: 16.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 1079.18ms. Allocated memory is still 113.2MB. Free memory was 66.4MB in the beginning and 72.1MB in the end (delta: -5.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 62.03ms. Allocated memory is still 113.2MB. Free memory was 71.6MB in the beginning and 66.6MB in the end (delta: 5.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 150]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L57] int waterLevel = 1; [L58] int methaneLevelCritical = 0; [L155] int cleanupTimeShifts = 4; [L296] int pumpRunning = 0; [L297] int systemActive = 1; [L719] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L234] int retValue_acc ; [L235] int tmp ; [L239] FCALL select_helpers() [L240] FCALL select_features() [L241] CALL, EXPR valid_product() [L283] int retValue_acc ; [L286] retValue_acc = 1 [L287] return (retValue_acc); VAL [\result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L241] RET, EXPR valid_product() [L241] tmp = valid_product() [L243] COND TRUE \read(tmp) [L245] FCALL setup() [L246] CALL runTest() [L225] CALL test() [L484] int splverifierCounter ; [L485] int tmp ; [L486] int tmp___0 ; [L487] int tmp___1 ; [L488] int tmp___2 ; [L491] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L493] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L495] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L501] tmp = __VERIFIER_nondet_int() [L503] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L505] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L75] COND TRUE waterLevel < 2 [L76] waterLevel = waterLevel + 1 VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L505] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L511] tmp___0 = __VERIFIER_nondet_int() [L513] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, waterLevel=2] [L521] tmp___2 = __VERIFIER_nondet_int() [L523] COND TRUE \read(tmp___2) [L525] CALL startSystem() [L478] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L525] RET startSystem() [L538] CALL timeShift() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L304] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L311] COND TRUE \read(systemActive) [L313] CALL processEnvironment() [L359] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L362] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L377] CALL processEnvironment__wrappee__lowWaterSensor() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L333] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L336] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L351] FCALL processEnvironment__wrappee__base() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L377] RET processEnvironment__wrappee__lowWaterSensor() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L313] RET processEnvironment() [L319] CALL __utac_acc__Specification3_spec__1() [L917] int tmp ; [L918] int tmp___0 ; [L919] int tmp___1 ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L923] CALL, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L96] int retValue_acc ; [L99] retValue_acc = methaneLevelCritical [L100] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L923] RET, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L923] tmp = isMethaneLevelCritical() [L925] COND FALSE !(\read(tmp)) [L929] CALL, EXPR getWaterLevel() [L128] int retValue_acc ; [L131] retValue_acc = waterLevel [L132] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=2, systemActive=1, waterLevel=2] [L929] RET, EXPR getWaterLevel() [L929] tmp___0 = getWaterLevel() [L931] COND TRUE tmp___0 == 2 [L933] CALL, EXPR isPumpRunning() [L411] int retValue_acc ; [L414] retValue_acc = pumpRunning [L415] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L933] RET, EXPR isPumpRunning() [L933] tmp___1 = isPumpRunning() [L935] COND FALSE !(\read(tmp___1)) [L939] CALL __automaton_fail() [L150] reach_error() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 90 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 306 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 296 mSDsluCounter, 781 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 346 mSDsCounter, 66 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 162 IncrementalHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 66 mSolverCounterUnsat, 435 mSDtfsCounter, 162 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=130occurred in iteration=4, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 34 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 211 NumberOfCodeBlocks, 211 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 161 ConstructedInterpolants, 0 QuantifiedInterpolants, 265 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-12-06 18:50:18,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f30985-eee6-47ad-adab-eb5f6daa0721/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE