./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/minepump_spec1_productSimulator.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5fbdf5bf Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/minepump_spec1_productSimulator.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b1532eb84511f08efccba1f71db5d8156ba5c802 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 16:14:27,210 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 16:14:27,212 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 16:14:27,254 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 16:14:27,255 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 16:14:27,258 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 16:14:27,260 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 16:14:27,266 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 16:14:27,269 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 16:14:27,273 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 16:14:27,274 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 16:14:27,278 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 16:14:27,278 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 16:14:27,281 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 16:14:27,282 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 16:14:27,284 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 16:14:27,285 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 16:14:27,286 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 16:14:27,290 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 16:14:27,298 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 16:14:27,299 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 16:14:27,300 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 16:14:27,302 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 16:14:27,303 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 16:14:27,309 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 16:14:27,310 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 16:14:27,310 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 16:14:27,312 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 16:14:27,313 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 16:14:27,313 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 16:14:27,314 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 16:14:27,314 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 16:14:27,316 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 16:14:27,316 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 16:14:27,317 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 16:14:27,318 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 16:14:27,318 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 16:14:27,319 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 16:14:27,319 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 16:14:27,320 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 16:14:27,321 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 16:14:27,325 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 16:14:27,365 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 16:14:27,366 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 16:14:27,367 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 16:14:27,367 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 16:14:27,369 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 16:14:27,369 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 16:14:27,370 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 16:14:27,370 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 16:14:27,370 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 16:14:27,370 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 16:14:27,371 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 16:14:27,371 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 16:14:27,372 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 16:14:27,372 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 16:14:27,372 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 16:14:27,372 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 16:14:27,372 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 16:14:27,372 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 16:14:27,373 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 16:14:27,373 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 16:14:27,373 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 16:14:27,373 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 16:14:27,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 16:14:27,373 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 16:14:27,374 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 16:14:27,374 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 16:14:27,374 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 16:14:27,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 16:14:27,374 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 16:14:27,375 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 16:14:27,375 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1532eb84511f08efccba1f71db5d8156ba5c802 [2021-08-29 16:14:27,652 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 16:14:27,672 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 16:14:27,674 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 16:14:27,675 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 16:14:27,677 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 16:14:27,678 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec1_productSimulator.cil.c [2021-08-29 16:14:27,735 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b68478b20/41d0d44eec754cb2adcd34e99504000f/FLAGed4f8a9c9 [2021-08-29 16:14:28,140 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 16:14:28,140 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_productSimulator.cil.c [2021-08-29 16:14:28,151 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b68478b20/41d0d44eec754cb2adcd34e99504000f/FLAGed4f8a9c9 [2021-08-29 16:14:28,527 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b68478b20/41d0d44eec754cb2adcd34e99504000f [2021-08-29 16:14:28,530 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 16:14:28,531 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 16:14:28,533 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 16:14:28,533 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 16:14:28,536 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 16:14:28,536 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 04:14:28" (1/1) ... [2021-08-29 16:14:28,538 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b37a354 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 04:14:28, skipping insertion in model container [2021-08-29 16:14:28,538 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 04:14:28" (1/1) ... [2021-08-29 16:14:28,544 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 16:14:28,592 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 16:14:28,880 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_productSimulator.cil.c[19893,19906] [2021-08-29 16:14:28,894 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 16:14:28,907 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 16:14:28,957 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_productSimulator.cil.c[19893,19906] [2021-08-29 16:14:28,959 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 16:14:28,976 INFO L208 MainTranslator]: Completed translation [2021-08-29 16:14:28,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 04:14:28 WrapperNode [2021-08-29 16:14:28,976 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 16:14:28,977 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 16:14:28,978 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 16:14:28,978 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 16:14:28,983 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 04:14:28" (1/1) ... [2021-08-29 16:14:29,004 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 04:14:28" (1/1) ... [2021-08-29 16:14:29,118 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 16:14:29,120 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 16:14:29,120 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 16:14:29,120 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 16:14:29,127 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 04:14:28" (1/1) ... [2021-08-29 16:14:29,127 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 04:14:28" (1/1) ... [2021-08-29 16:14:29,160 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 04:14:28" (1/1) ... [2021-08-29 16:14:29,161 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 04:14:28" (1/1) ... [2021-08-29 16:14:29,204 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 04:14:28" (1/1) ... [2021-08-29 16:14:29,229 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 04:14:28" (1/1) ... [2021-08-29 16:14:29,236 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 04:14:28" (1/1) ... [2021-08-29 16:14:29,247 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 16:14:29,249 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 16:14:29,250 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 16:14:29,250 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 16:14:29,251 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 04:14:28" (1/1) ... [2021-08-29 16:14:29,256 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 16:14:29,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 16:14:29,278 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-29 16:14:29,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-29 16:14:29,324 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 16:14:29,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 16:14:29,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 16:14:29,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 16:14:30,108 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 16:14:30,108 INFO L299 CfgBuilder]: Removed 900 assume(true) statements. [2021-08-29 16:14:30,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 04:14:30 BoogieIcfgContainer [2021-08-29 16:14:30,112 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 16:14:30,113 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 16:14:30,113 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 16:14:30,116 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 16:14:30,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 04:14:28" (1/3) ... [2021-08-29 16:14:30,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f77f632 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 04:14:30, skipping insertion in model container [2021-08-29 16:14:30,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 04:14:28" (2/3) ... [2021-08-29 16:14:30,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f77f632 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 04:14:30, skipping insertion in model container [2021-08-29 16:14:30,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 04:14:30" (3/3) ... [2021-08-29 16:14:30,122 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_productSimulator.cil.c [2021-08-29 16:14:30,126 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 16:14:30,126 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-08-29 16:14:30,169 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 16:14:30,175 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, mConcurrency=FINITE_AUTOMATA, 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 [2021-08-29 16:14:30,175 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-08-29 16:14:30,205 INFO L276 IsEmpty]: Start isEmpty. Operand has 470 states, 466 states have (on average 1.5751072961373391) internal successors, (734), 469 states have internal predecessors, (734), 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) [2021-08-29 16:14:30,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-29 16:14:30,218 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 16:14:30,218 INFO L513 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] [2021-08-29 16:14:30,220 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 16:14:30,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 16:14:30,224 INFO L82 PathProgramCache]: Analyzing trace with hash -1535705576, now seen corresponding path program 1 times [2021-08-29 16:14:30,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 16:14:30,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891636481] [2021-08-29 16:14:30,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 16:14:30,234 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 16:14:30,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 16:14:30,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 16:14:30,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 16:14:30,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891636481] [2021-08-29 16:14:30,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891636481] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 16:14:30,467 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 16:14:30,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 16:14:30,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872232189] [2021-08-29 16:14:30,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-29 16:14:30,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 16:14:30,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-29 16:14:30,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 16:14:30,500 INFO L87 Difference]: Start difference. First operand has 470 states, 466 states have (on average 1.5751072961373391) internal successors, (734), 469 states have internal predecessors, (734), 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 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 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) [2021-08-29 16:14:31,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 16:14:31,378 INFO L93 Difference]: Finished difference Result 927 states and 1454 transitions. [2021-08-29 16:14:31,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-29 16:14:31,382 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 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) Word has length 23 [2021-08-29 16:14:31,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 16:14:31,403 INFO L225 Difference]: With dead ends: 927 [2021-08-29 16:14:31,403 INFO L226 Difference]: Without dead ends: 466 [2021-08-29 16:14:31,412 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 16:14:31,417 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 564.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.82ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 767.96ms IncrementalHoareTripleChecker+Time [2021-08-29 16:14:31,418 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 727 Unknown, 0 Unchecked, 6.82ms Time], IncrementalHoareTripleChecker [0 Valid, 727 Invalid, 0 Unknown, 0 Unchecked, 767.96ms Time] [2021-08-29 16:14:31,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2021-08-29 16:14:31,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 466. [2021-08-29 16:14:31,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 463 states have (on average 1.5593952483801297) internal successors, (722), 465 states have internal predecessors, (722), 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) [2021-08-29 16:14:31,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 722 transitions. [2021-08-29 16:14:31,473 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 722 transitions. Word has length 23 [2021-08-29 16:14:31,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 16:14:31,473 INFO L470 AbstractCegarLoop]: Abstraction has 466 states and 722 transitions. [2021-08-29 16:14:31,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 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) [2021-08-29 16:14:31,474 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 722 transitions. [2021-08-29 16:14:31,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-08-29 16:14:31,475 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 16:14:31,475 INFO L513 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] [2021-08-29 16:14:31,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 16:14:31,476 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 16:14:31,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 16:14:31,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1882100476, now seen corresponding path program 1 times [2021-08-29 16:14:31,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 16:14:31,477 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372645344] [2021-08-29 16:14:31,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 16:14:31,477 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 16:14:31,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 16:14:31,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 16:14:31,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 16:14:31,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372645344] [2021-08-29 16:14:31,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372645344] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 16:14:31,581 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 16:14:31,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 16:14:31,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128787220] [2021-08-29 16:14:31,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 16:14:31,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 16:14:31,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 16:14:31,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 16:14:31,585 INFO L87 Difference]: Start difference. First operand 466 states and 722 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 16:14:31,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 16:14:31,968 INFO L93 Difference]: Finished difference Result 466 states and 722 transitions. [2021-08-29 16:14:31,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 16:14:31,968 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-08-29 16:14:31,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 16:14:31,969 INFO L225 Difference]: With dead ends: 466 [2021-08-29 16:14:31,970 INFO L226 Difference]: Without dead ends: 172 [2021-08-29 16:14:31,970 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.00ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 16:14:31,971 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 249 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 267.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.65ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 360.09ms IncrementalHoareTripleChecker+Time [2021-08-29 16:14:31,972 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [249 Valid, 0 Invalid, 275 Unknown, 0 Unchecked, 1.65ms Time], IncrementalHoareTripleChecker [0 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 360.09ms Time] [2021-08-29 16:14:31,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-08-29 16:14:31,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2021-08-29 16:14:31,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 1.5380116959064327) internal successors, (263), 171 states have internal predecessors, (263), 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) [2021-08-29 16:14:31,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 263 transitions. [2021-08-29 16:14:31,991 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 263 transitions. Word has length 24 [2021-08-29 16:14:31,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 16:14:32,004 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 263 transitions. [2021-08-29 16:14:32,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 16:14:32,005 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 263 transitions. [2021-08-29 16:14:32,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-08-29 16:14:32,006 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 16:14:32,006 INFO L513 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] [2021-08-29 16:14:32,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-29 16:14:32,007 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 16:14:32,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 16:14:32,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1978143563, now seen corresponding path program 1 times [2021-08-29 16:14:32,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 16:14:32,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119865851] [2021-08-29 16:14:32,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 16:14:32,009 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 16:14:32,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 16:14:32,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 16:14:32,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 16:14:32,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119865851] [2021-08-29 16:14:32,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119865851] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 16:14:32,159 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 16:14:32,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-29 16:14:32,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884676648] [2021-08-29 16:14:32,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-29 16:14:32,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 16:14:32,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-29 16:14:32,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-29 16:14:32,161 INFO L87 Difference]: Start difference. First operand 172 states and 263 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 16:14:33,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 16:14:33,473 INFO L93 Difference]: Finished difference Result 674 states and 1051 transitions. [2021-08-29 16:14:33,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-29 16:14:33,473 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-08-29 16:14:33,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 16:14:33,476 INFO L225 Difference]: With dead ends: 674 [2021-08-29 16:14:33,476 INFO L226 Difference]: Without dead ends: 515 [2021-08-29 16:14:33,477 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.79ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-08-29 16:14:33,478 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 1741 mSDsluCounter, 1862 mSDsCounter, 0 mSdLazyCounter, 2163 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 933.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1741 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.85ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1192.04ms IncrementalHoareTripleChecker+Time [2021-08-29 16:14:33,480 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [1741 Valid, 0 Invalid, 2172 Unknown, 0 Unchecked, 11.85ms Time], IncrementalHoareTripleChecker [9 Valid, 2163 Invalid, 0 Unknown, 0 Unchecked, 1192.04ms Time] [2021-08-29 16:14:33,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2021-08-29 16:14:33,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 193. [2021-08-29 16:14:33,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 192 states have (on average 1.5416666666666667) internal successors, (296), 192 states have internal predecessors, (296), 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) [2021-08-29 16:14:33,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 296 transitions. [2021-08-29 16:14:33,511 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 296 transitions. Word has length 30 [2021-08-29 16:14:33,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 16:14:33,511 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 296 transitions. [2021-08-29 16:14:33,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 16:14:33,512 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 296 transitions. [2021-08-29 16:14:33,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-29 16:14:33,517 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 16:14:33,517 INFO L513 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] [2021-08-29 16:14:33,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-29 16:14:33,518 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 16:14:33,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 16:14:33,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1554604317, now seen corresponding path program 1 times [2021-08-29 16:14:33,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 16:14:33,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127380126] [2021-08-29 16:14:33,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 16:14:33,529 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 16:14:33,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 16:14:33,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 16:14:33,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 16:14:33,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127380126] [2021-08-29 16:14:33,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127380126] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 16:14:33,631 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 16:14:33,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 16:14:33,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011105589] [2021-08-29 16:14:33,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 16:14:33,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 16:14:33,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 16:14:33,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 16:14:33,634 INFO L87 Difference]: Start difference. First operand 193 states and 296 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 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) [2021-08-29 16:14:33,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 16:14:33,919 INFO L93 Difference]: Finished difference Result 384 states and 597 transitions. [2021-08-29 16:14:33,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 16:14:33,919 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 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) Word has length 33 [2021-08-29 16:14:33,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 16:14:33,920 INFO L225 Difference]: With dead ends: 384 [2021-08-29 16:14:33,921 INFO L226 Difference]: Without dead ends: 204 [2021-08-29 16:14:33,921 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.66ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 16:14:33,922 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 152 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 189.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.96ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 261.90ms IncrementalHoareTripleChecker+Time [2021-08-29 16:14:33,923 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 0 Invalid, 339 Unknown, 0 Unchecked, 0.96ms Time], IncrementalHoareTripleChecker [22 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 261.90ms Time] [2021-08-29 16:14:33,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-08-29 16:14:33,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 202. [2021-08-29 16:14:33,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 201 states have (on average 1.5024875621890548) internal successors, (302), 201 states have internal predecessors, (302), 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) [2021-08-29 16:14:33,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 302 transitions. [2021-08-29 16:14:33,940 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 302 transitions. Word has length 33 [2021-08-29 16:14:33,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 16:14:33,941 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 302 transitions. [2021-08-29 16:14:33,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 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) [2021-08-29 16:14:33,942 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 302 transitions. [2021-08-29 16:14:33,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-29 16:14:33,945 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 16:14:33,945 INFO L513 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] [2021-08-29 16:14:33,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-29 16:14:33,946 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 16:14:33,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 16:14:33,948 INFO L82 PathProgramCache]: Analyzing trace with hash 965063802, now seen corresponding path program 1 times [2021-08-29 16:14:33,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 16:14:33,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035963374] [2021-08-29 16:14:33,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 16:14:33,948 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 16:14:33,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 16:14:34,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 16:14:34,041 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 16:14:34,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035963374] [2021-08-29 16:14:34,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035963374] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 16:14:34,042 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 16:14:34,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 16:14:34,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050427646] [2021-08-29 16:14:34,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-29 16:14:34,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 16:14:34,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-29 16:14:34,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-29 16:14:34,045 INFO L87 Difference]: Start difference. First operand 202 states and 302 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 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) [2021-08-29 16:14:35,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 16:14:35,180 INFO L93 Difference]: Finished difference Result 1088 states and 1674 transitions. [2021-08-29 16:14:35,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-29 16:14:35,181 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 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) Word has length 33 [2021-08-29 16:14:35,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 16:14:35,184 INFO L225 Difference]: With dead ends: 1088 [2021-08-29 16:14:35,184 INFO L226 Difference]: Without dead ends: 899 [2021-08-29 16:14:35,185 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 24.92ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-08-29 16:14:35,185 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 1219 mSDsluCounter, 1022 mSDsCounter, 0 mSdLazyCounter, 1433 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 794.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1219 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.12ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1015.47ms IncrementalHoareTripleChecker+Time [2021-08-29 16:14:35,186 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [1219 Valid, 0 Invalid, 1472 Unknown, 0 Unchecked, 7.12ms Time], IncrementalHoareTripleChecker [39 Valid, 1433 Invalid, 0 Unknown, 0 Unchecked, 1015.47ms Time] [2021-08-29 16:14:35,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 899 states. [2021-08-29 16:14:35,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 899 to 383. [2021-08-29 16:14:35,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 1.5052356020942408) internal successors, (575), 382 states have internal predecessors, (575), 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) [2021-08-29 16:14:35,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 575 transitions. [2021-08-29 16:14:35,212 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 575 transitions. Word has length 33 [2021-08-29 16:14:35,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 16:14:35,212 INFO L470 AbstractCegarLoop]: Abstraction has 383 states and 575 transitions. [2021-08-29 16:14:35,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 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) [2021-08-29 16:14:35,213 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 575 transitions. [2021-08-29 16:14:35,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-08-29 16:14:35,214 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 16:14:35,214 INFO L513 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] [2021-08-29 16:14:35,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-29 16:14:35,214 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 16:14:35,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 16:14:35,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1927811083, now seen corresponding path program 1 times [2021-08-29 16:14:35,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 16:14:35,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99846230] [2021-08-29 16:14:35,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 16:14:35,215 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 16:14:35,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 16:14:35,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 16:14:35,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 16:14:35,277 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99846230] [2021-08-29 16:14:35,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99846230] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 16:14:35,277 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 16:14:35,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 16:14:35,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944301622] [2021-08-29 16:14:35,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-29 16:14:35,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 16:14:35,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-29 16:14:35,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-29 16:14:35,280 INFO L87 Difference]: Start difference. First operand 383 states and 575 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 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) [2021-08-29 16:14:36,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 16:14:36,395 INFO L93 Difference]: Finished difference Result 1195 states and 1810 transitions. [2021-08-29 16:14:36,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-29 16:14:36,395 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 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) Word has length 34 [2021-08-29 16:14:36,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 16:14:36,399 INFO L225 Difference]: With dead ends: 1195 [2021-08-29 16:14:36,399 INFO L226 Difference]: Without dead ends: 1193 [2021-08-29 16:14:36,400 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 25.93ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-08-29 16:14:36,400 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 833 mSDsluCounter, 1013 mSDsCounter, 0 mSdLazyCounter, 1678 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 784.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 833 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.17ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 990.68ms IncrementalHoareTripleChecker+Time [2021-08-29 16:14:36,401 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [833 Valid, 0 Invalid, 1692 Unknown, 0 Unchecked, 7.17ms Time], IncrementalHoareTripleChecker [14 Valid, 1678 Invalid, 0 Unknown, 0 Unchecked, 990.68ms Time] [2021-08-29 16:14:36,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1193 states. [2021-08-29 16:14:36,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1193 to 383. [2021-08-29 16:14:36,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 1.5) internal successors, (573), 382 states have internal predecessors, (573), 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) [2021-08-29 16:14:36,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 573 transitions. [2021-08-29 16:14:36,424 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 573 transitions. Word has length 34 [2021-08-29 16:14:36,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 16:14:36,425 INFO L470 AbstractCegarLoop]: Abstraction has 383 states and 573 transitions. [2021-08-29 16:14:36,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 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) [2021-08-29 16:14:36,425 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 573 transitions. [2021-08-29 16:14:36,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-08-29 16:14:36,426 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 16:14:36,426 INFO L513 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] [2021-08-29 16:14:36,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-29 16:14:36,426 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 16:14:36,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 16:14:36,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1912385192, now seen corresponding path program 1 times [2021-08-29 16:14:36,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 16:14:36,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347827500] [2021-08-29 16:14:36,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 16:14:36,428 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 16:14:36,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 16:14:36,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 16:14:36,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 16:14:36,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347827500] [2021-08-29 16:14:36,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347827500] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 16:14:36,469 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 16:14:36,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-29 16:14:36,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177732476] [2021-08-29 16:14:36,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-29 16:14:36,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 16:14:36,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-29 16:14:36,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-29 16:14:36,470 INFO L87 Difference]: Start difference. First operand 383 states and 573 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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) [2021-08-29 16:14:37,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 16:14:37,082 INFO L93 Difference]: Finished difference Result 1009 states and 1501 transitions. [2021-08-29 16:14:37,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-29 16:14:37,083 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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) Word has length 42 [2021-08-29 16:14:37,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 16:14:37,085 INFO L225 Difference]: With dead ends: 1009 [2021-08-29 16:14:37,086 INFO L226 Difference]: Without dead ends: 639 [2021-08-29 16:14:37,086 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.44ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-29 16:14:37,087 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 235 mSDsluCounter, 703 mSDsCounter, 0 mSdLazyCounter, 1083 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 418.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.95ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 550.89ms IncrementalHoareTripleChecker+Time [2021-08-29 16:14:37,087 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 0 Invalid, 1119 Unknown, 0 Unchecked, 2.95ms Time], IncrementalHoareTripleChecker [36 Valid, 1083 Invalid, 0 Unknown, 0 Unchecked, 550.89ms Time] [2021-08-29 16:14:37,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2021-08-29 16:14:37,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 431. [2021-08-29 16:14:37,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 430 states have (on average 1.4441860465116279) internal successors, (621), 430 states have internal predecessors, (621), 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) [2021-08-29 16:14:37,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 621 transitions. [2021-08-29 16:14:37,111 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 621 transitions. Word has length 42 [2021-08-29 16:14:37,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 16:14:37,112 INFO L470 AbstractCegarLoop]: Abstraction has 431 states and 621 transitions. [2021-08-29 16:14:37,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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) [2021-08-29 16:14:37,112 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 621 transitions. [2021-08-29 16:14:37,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-08-29 16:14:37,113 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 16:14:37,113 INFO L513 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] [2021-08-29 16:14:37,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-29 16:14:37,113 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 16:14:37,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 16:14:37,114 INFO L82 PathProgramCache]: Analyzing trace with hash -1681517526, now seen corresponding path program 1 times [2021-08-29 16:14:37,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 16:14:37,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757275305] [2021-08-29 16:14:37,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 16:14:37,115 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 16:14:37,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 16:14:37,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 16:14:37,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 16:14:37,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757275305] [2021-08-29 16:14:37,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757275305] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 16:14:37,167 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 16:14:37,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-29 16:14:37,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206924733] [2021-08-29 16:14:37,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-29 16:14:37,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 16:14:37,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-29 16:14:37,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-29 16:14:37,169 INFO L87 Difference]: Start difference. First operand 431 states and 621 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 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) [2021-08-29 16:14:37,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 16:14:37,828 INFO L93 Difference]: Finished difference Result 1145 states and 1637 transitions. [2021-08-29 16:14:37,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-29 16:14:37,829 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 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) Word has length 42 [2021-08-29 16:14:37,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 16:14:37,831 INFO L225 Difference]: With dead ends: 1145 [2021-08-29 16:14:37,831 INFO L226 Difference]: Without dead ends: 727 [2021-08-29 16:14:37,832 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 46.65ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-08-29 16:14:37,833 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 1073 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 819 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 442.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1073 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.33ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 561.06ms IncrementalHoareTripleChecker+Time [2021-08-29 16:14:37,833 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [1073 Valid, 0 Invalid, 848 Unknown, 0 Unchecked, 4.33ms Time], IncrementalHoareTripleChecker [29 Valid, 819 Invalid, 0 Unknown, 0 Unchecked, 561.06ms Time] [2021-08-29 16:14:37,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2021-08-29 16:14:37,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 463. [2021-08-29 16:14:37,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 462 states have (on average 1.4134199134199135) internal successors, (653), 462 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 16:14:37,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 653 transitions. [2021-08-29 16:14:37,861 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 653 transitions. Word has length 42 [2021-08-29 16:14:37,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 16:14:37,862 INFO L470 AbstractCegarLoop]: Abstraction has 463 states and 653 transitions. [2021-08-29 16:14:37,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 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) [2021-08-29 16:14:37,862 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 653 transitions. [2021-08-29 16:14:37,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-08-29 16:14:37,863 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 16:14:37,863 INFO L513 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] [2021-08-29 16:14:37,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-29 16:14:37,864 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 16:14:37,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 16:14:37,864 INFO L82 PathProgramCache]: Analyzing trace with hash 2026643756, now seen corresponding path program 1 times [2021-08-29 16:14:37,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 16:14:37,865 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112798656] [2021-08-29 16:14:37,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 16:14:37,865 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 16:14:37,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 16:14:37,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 16:14:37,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 16:14:37,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112798656] [2021-08-29 16:14:37,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112798656] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 16:14:37,913 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 16:14:37,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 16:14:37,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39152337] [2021-08-29 16:14:37,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 16:14:37,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 16:14:37,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 16:14:37,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 16:14:37,917 INFO L87 Difference]: Start difference. First operand 463 states and 653 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 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) [2021-08-29 16:14:38,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 16:14:38,302 INFO L93 Difference]: Finished difference Result 1187 states and 1693 transitions. [2021-08-29 16:14:38,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 16:14:38,303 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 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) Word has length 42 [2021-08-29 16:14:38,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 16:14:38,306 INFO L225 Difference]: With dead ends: 1187 [2021-08-29 16:14:38,306 INFO L226 Difference]: Without dead ends: 737 [2021-08-29 16:14:38,307 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.50ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 16:14:38,307 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 123 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 254.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.07ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 333.65ms IncrementalHoareTripleChecker+Time [2021-08-29 16:14:38,308 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 0 Invalid, 510 Unknown, 0 Unchecked, 1.07ms Time], IncrementalHoareTripleChecker [18 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 333.65ms Time] [2021-08-29 16:14:38,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2021-08-29 16:14:38,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 735. [2021-08-29 16:14:38,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 735 states, 734 states have (on average 1.4032697547683923) internal successors, (1030), 734 states have internal predecessors, (1030), 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) [2021-08-29 16:14:38,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 1030 transitions. [2021-08-29 16:14:38,359 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 1030 transitions. Word has length 42 [2021-08-29 16:14:38,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 16:14:38,359 INFO L470 AbstractCegarLoop]: Abstraction has 735 states and 1030 transitions. [2021-08-29 16:14:38,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 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) [2021-08-29 16:14:38,359 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 1030 transitions. [2021-08-29 16:14:38,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-08-29 16:14:38,362 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 16:14:38,362 INFO L513 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] [2021-08-29 16:14:38,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-29 16:14:38,363 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 16:14:38,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 16:14:38,363 INFO L82 PathProgramCache]: Analyzing trace with hash -1499020087, now seen corresponding path program 1 times [2021-08-29 16:14:38,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 16:14:38,364 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907148788] [2021-08-29 16:14:38,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 16:14:38,364 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 16:14:38,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 16:14:38,431 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-29 16:14:38,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 16:14:38,548 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-29 16:14:38,548 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-08-29 16:14:38,549 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2021-08-29 16:14:38,550 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2021-08-29 16:14:38,551 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2021-08-29 16:14:38,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-29 16:14:38,565 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 16:14:38,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 04:14:38 BoogieIcfgContainer [2021-08-29 16:14:38,689 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 16:14:38,689 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 16:14:38,689 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 16:14:38,690 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 16:14:38,690 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 04:14:30" (3/4) ... [2021-08-29 16:14:38,692 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-29 16:14:38,792 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 16:14:38,792 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 16:14:38,792 INFO L158 Benchmark]: Toolchain (without parser) took 10261.24ms. Allocated memory was 56.6MB in the beginning and 159.4MB in the end (delta: 102.8MB). Free memory was 34.6MB in the beginning and 59.5MB in the end (delta: -24.9MB). Peak memory consumption was 77.5MB. Max. memory is 16.1GB. [2021-08-29 16:14:38,793 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 56.6MB. Free memory was 38.9MB in the beginning and 38.8MB in the end (delta: 42.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 16:14:38,793 INFO L158 Benchmark]: CACSL2BoogieTranslator took 443.91ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 34.5MB in the beginning and 45.1MB in the end (delta: -10.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-08-29 16:14:38,793 INFO L158 Benchmark]: Boogie Procedure Inliner took 141.77ms. Allocated memory is still 69.2MB. Free memory was 45.0MB in the beginning and 48.2MB in the end (delta: -3.1MB). Peak memory consumption was 18.7MB. Max. memory is 16.1GB. [2021-08-29 16:14:38,794 INFO L158 Benchmark]: Boogie Preprocessor took 128.16ms. Allocated memory is still 69.2MB. Free memory was 48.2MB in the beginning and 40.8MB in the end (delta: 7.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-08-29 16:14:38,794 INFO L158 Benchmark]: RCFGBuilder took 862.46ms. Allocated memory was 69.2MB in the beginning and 90.2MB in the end (delta: 21.0MB). Free memory was 40.8MB in the beginning and 60.5MB in the end (delta: -19.8MB). Peak memory consumption was 22.7MB. Max. memory is 16.1GB. [2021-08-29 16:14:38,795 INFO L158 Benchmark]: TraceAbstraction took 8575.40ms. Allocated memory was 90.2MB in the beginning and 159.4MB in the end (delta: 69.2MB). Free memory was 59.7MB in the beginning and 82.5MB in the end (delta: -22.9MB). Peak memory consumption was 45.6MB. Max. memory is 16.1GB. [2021-08-29 16:14:38,795 INFO L158 Benchmark]: Witness Printer took 102.71ms. Allocated memory is still 159.4MB. Free memory was 82.5MB in the beginning and 59.5MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-08-29 16:14:38,798 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 56.6MB. Free memory was 38.9MB in the beginning and 38.8MB in the end (delta: 42.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 443.91ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 34.5MB in the beginning and 45.1MB in the end (delta: -10.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 141.77ms. Allocated memory is still 69.2MB. Free memory was 45.0MB in the beginning and 48.2MB in the end (delta: -3.1MB). Peak memory consumption was 18.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 128.16ms. Allocated memory is still 69.2MB. Free memory was 48.2MB in the beginning and 40.8MB in the end (delta: 7.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 862.46ms. Allocated memory was 69.2MB in the beginning and 90.2MB in the end (delta: 21.0MB). Free memory was 40.8MB in the beginning and 60.5MB in the end (delta: -19.8MB). Peak memory consumption was 22.7MB. Max. memory is 16.1GB. * TraceAbstraction took 8575.40ms. Allocated memory was 90.2MB in the beginning and 159.4MB in the end (delta: 69.2MB). Free memory was 59.7MB in the beginning and 82.5MB in the end (delta: -22.9MB). Peak memory consumption was 45.6MB. Max. memory is 16.1GB. * Witness Printer took 102.71ms. Allocated memory is still 159.4MB. Free memory was 82.5MB in the beginning and 59.5MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 1023]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L42] int __SELECTED_FEATURE_base ; [L43] int __SELECTED_FEATURE_highWaterSensor ; [L44] int __SELECTED_FEATURE_lowWaterSensor ; [L45] int __SELECTED_FEATURE_methaneQuery ; [L46] int __SELECTED_FEATURE_methaneAlarm ; [L47] int __SELECTED_FEATURE_stopCommand ; [L48] int __SELECTED_FEATURE_startCommand ; [L49] int __GUIDSL_ROOT_PRODUCTION ; [L142] int pumpRunning = 0; [L143] int systemActive = 1; [L643] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L916] int waterLevel = 1; [L917] int methaneLevelCritical = 0; [L1028] int cleanupTimeShifts = 4; VAL [__GUIDSL_ROOT_PRODUCTION=0, __SELECTED_FEATURE_base=0, __SELECTED_FEATURE_highWaterSensor=0, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L1101] int retValue_acc ; [L1102] int tmp ; [L874] __GUIDSL_ROOT_PRODUCTION = 1 VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=0, __SELECTED_FEATURE_highWaterSensor=0, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L859] __SELECTED_FEATURE_base = 1 [L845] int retValue_acc ; [L846] int choice = __VERIFIER_nondet_int(); [L849] retValue_acc = choice [L850] return (retValue_acc); VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=0, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L860] __SELECTED_FEATURE_highWaterSensor = select_one() [L845] int retValue_acc ; [L846] int choice = __VERIFIER_nondet_int(); [L849] retValue_acc = choice [L850] return (retValue_acc); VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=1, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L861] __SELECTED_FEATURE_lowWaterSensor = select_one() [L845] int retValue_acc ; [L846] int choice = __VERIFIER_nondet_int(); [L849] retValue_acc = choice [L850] return (retValue_acc); VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=1, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L862] __SELECTED_FEATURE_methaneQuery = select_one() [L845] int retValue_acc ; [L846] int choice = __VERIFIER_nondet_int(); [L849] retValue_acc = choice [L850] return (retValue_acc); VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=1, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L863] __SELECTED_FEATURE_methaneAlarm = select_one() [L845] int retValue_acc ; [L846] int choice = __VERIFIER_nondet_int(); [L849] retValue_acc = choice [L850] return (retValue_acc); VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=1, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L864] __SELECTED_FEATURE_stopCommand = select_one() [L845] int retValue_acc ; [L846] int choice = __VERIFIER_nondet_int(); [L849] retValue_acc = choice [L850] return (retValue_acc); VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=1, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L865] __SELECTED_FEATURE_startCommand = select_one() [L879] int retValue_acc ; [L882] retValue_acc = __SELECTED_FEATURE_base [L883] return (retValue_acc); VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=1, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L1108] tmp = valid_product() [L1110] COND TRUE \read(tmp) VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=1, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L57] int splverifierCounter ; [L58] int tmp ; [L59] int tmp___0 ; [L60] int tmp___1 ; [L61] int tmp___2 ; [L64] splverifierCounter = 0 VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=1, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L66] COND TRUE 1 VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=1, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L68] COND TRUE splverifierCounter < 4 VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=1, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L74] tmp = __VERIFIER_nondet_int() [L76] COND TRUE \read(tmp) VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=1, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L934] COND TRUE waterLevel < 2 [L935] waterLevel = waterLevel + 1 VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=1, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L84] tmp___0 = __VERIFIER_nondet_int() [L86] COND TRUE \read(tmp___0) VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=1, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L946] COND FALSE !(\read(methaneLevelCritical)) [L949] methaneLevelCritical = 1 VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=1, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L94] tmp___2 = __VERIFIER_nondet_int() [L96] COND FALSE !(\read(tmp___2)) [L106] tmp___1 = __VERIFIER_nondet_int() [L108] COND FALSE !(\read(tmp___1)) VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=1, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L150] COND FALSE !(\read(pumpRunning)) VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=1, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L157] COND TRUE \read(systemActive) VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=1, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L293] COND FALSE !(\read(__SELECTED_FEATURE_methaneAlarm)) VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=1, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L250] COND FALSE !(\read(__SELECTED_FEATURE_lowWaterSensor)) VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=1, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L207] COND TRUE \read(__SELECTED_FEATURE_highWaterSensor) [L179] int tmp ; VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=1, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L182] COND TRUE ! pumpRunning [L413] int retValue_acc ; [L414] int tmp ; [L415] int tmp___0 ; [L996] int retValue_acc ; VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=1, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L999] COND FALSE !(waterLevel < 2) [L1003] retValue_acc = 0 [L1004] return (retValue_acc); VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=1, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L419] tmp = isHighWaterSensorDry() [L421] COND FALSE !(\read(tmp)) [L424] tmp___0 = 1 VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=1, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L426] retValue_acc = tmp___0 [L427] return (retValue_acc); VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=1, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L184] tmp = isHighWaterLevel() [L186] COND TRUE \read(tmp) VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=1, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L335] COND FALSE !(\read(__SELECTED_FEATURE_methaneQuery)) [L310] pumpRunning = 1 VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=1, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L890] int tmp ; [L891] int tmp___0 ; [L955] int retValue_acc ; [L958] retValue_acc = methaneLevelCritical [L959] return (retValue_acc); VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=1, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L895] tmp = isMethaneLevelCritical() [L897] COND TRUE \read(tmp) [L368] int retValue_acc ; [L371] retValue_acc = pumpRunning [L372] return (retValue_acc); VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=1, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L899] tmp___0 = isPumpRunning() [L901] COND TRUE \read(tmp___0) VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=1, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L1023] reach_error() VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=1, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - UnprovableResult [Line: 1023]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1023]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 470 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 8388.83ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 39.06ms, AutomataDifference: 6890.31ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 18.61ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5625 SdHoareTripleChecker+Valid, 6033.75ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5625 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 4649.32ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5333 mSDsCounter, 167 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8987 IncrementalHoareTripleChecker+Invalid, 9154 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 167 mSolverCounterUnsat, 0 mSDtfsCounter, 8987 mSolverCounterSat, 43.91ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 59 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 166.93ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=735occurred in iteration=9, InterpolantAutomatonStates: 49, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 257.38ms AutomataMinimizationTime, 9 MinimizatonAttempts, 2124 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 41.66ms SsaConstructionTime, 328.67ms SatisfiabilityAnalysisTime, 483.56ms InterpolantComputationTime, 346 NumberOfCodeBlocks, 346 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 294 ConstructedInterpolants, 0 QuantifiedInterpolants, 612 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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! [2021-08-29 16:14:38,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...