./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/minepump_spec3_product36.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54858612 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_spec3_product36.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 99c00eceebadc8c15e4601def9bb17816540a0dc ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.2.0-5485861 [2020-10-25 23:06:26,228 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 23:06:26,231 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 23:06:26,267 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 23:06:26,268 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 23:06:26,270 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 23:06:26,272 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 23:06:26,275 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 23:06:26,277 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 23:06:26,279 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 23:06:26,280 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 23:06:26,282 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 23:06:26,282 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 23:06:26,284 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 23:06:26,285 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 23:06:26,287 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 23:06:26,288 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 23:06:26,289 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 23:06:26,291 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 23:06:26,294 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 23:06:26,296 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 23:06:26,301 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 23:06:26,302 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 23:06:26,303 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 23:06:26,307 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 23:06:26,307 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 23:06:26,308 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 23:06:26,309 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 23:06:26,310 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 23:06:26,311 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 23:06:26,312 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 23:06:26,313 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 23:06:26,314 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 23:06:26,315 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 23:06:26,317 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 23:06:26,317 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 23:06:26,318 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 23:06:26,319 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 23:06:26,319 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 23:06:26,320 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 23:06:26,321 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 23:06:26,323 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 23:06:26,357 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 23:06:26,358 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 23:06:26,360 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 23:06:26,360 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 23:06:26,360 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 23:06:26,361 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 23:06:26,361 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 23:06:26,361 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 23:06:26,362 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 23:06:26,362 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 23:06:26,362 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 23:06:26,362 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 23:06:26,363 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 23:06:26,363 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 23:06:26,363 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 23:06:26,363 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 23:06:26,364 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 23:06:26,364 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 23:06:26,364 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 23:06:26,364 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 23:06:26,365 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 23:06:26,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 23:06:26,365 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 23:06:26,366 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 23:06:26,366 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 23:06:26,366 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 23:06:26,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 23:06:26,367 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 23:06:26,367 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 23:06:26,367 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 99c00eceebadc8c15e4601def9bb17816540a0dc [2020-10-25 23:06:26,755 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 23:06:26,785 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 23:06:26,789 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 23:06:26,790 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 23:06:26,791 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 23:06:26,796 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product36.cil.c [2020-10-25 23:06:26,879 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/083343f85/a4abb101b33f4c6b90d463f66b13fff9/FLAGba1997819 [2020-10-25 23:06:27,557 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 23:06:27,561 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product36.cil.c [2020-10-25 23:06:27,581 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/083343f85/a4abb101b33f4c6b90d463f66b13fff9/FLAGba1997819 [2020-10-25 23:06:27,863 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/083343f85/a4abb101b33f4c6b90d463f66b13fff9 [2020-10-25 23:06:27,868 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 23:06:27,880 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 23:06:27,882 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 23:06:27,882 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 23:06:27,886 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 23:06:27,887 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 11:06:27" (1/1) ... [2020-10-25 23:06:27,891 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67d62d84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:06:27, skipping insertion in model container [2020-10-25 23:06:27,892 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 11:06:27" (1/1) ... [2020-10-25 23:06:27,900 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 23:06:27,940 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 23:06:28,279 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 23:06:28,292 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 23:06:28,388 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 23:06:28,436 INFO L208 MainTranslator]: Completed translation [2020-10-25 23:06:28,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:06:28 WrapperNode [2020-10-25 23:06:28,437 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 23:06:28,439 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 23:06:28,439 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 23:06:28,439 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 23:06:28,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:06:28" (1/1) ... [2020-10-25 23:06:28,494 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:06:28" (1/1) ... [2020-10-25 23:06:28,565 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 23:06:28,567 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 23:06:28,567 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 23:06:28,567 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 23:06:28,577 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:06:28" (1/1) ... [2020-10-25 23:06:28,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:06:28" (1/1) ... [2020-10-25 23:06:28,588 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:06:28" (1/1) ... [2020-10-25 23:06:28,595 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:06:28" (1/1) ... [2020-10-25 23:06:28,621 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:06:28" (1/1) ... [2020-10-25 23:06:28,636 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:06:28" (1/1) ... [2020-10-25 23:06:28,639 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:06:28" (1/1) ... [2020-10-25 23:06:28,651 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 23:06:28,652 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 23:06:28,653 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 23:06:28,654 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 23:06:28,655 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:06:28" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 23:06:28,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 23:06:28,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 23:06:28,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 23:06:28,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 23:06:29,874 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 23:06:29,877 INFO L298 CfgBuilder]: Removed 114 assume(true) statements. [2020-10-25 23:06:29,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 11:06:29 BoogieIcfgContainer [2020-10-25 23:06:29,880 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 23:06:29,885 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 23:06:29,886 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 23:06:29,890 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 23:06:29,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 11:06:27" (1/3) ... [2020-10-25 23:06:29,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5def8d40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 11:06:29, skipping insertion in model container [2020-10-25 23:06:29,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:06:28" (2/3) ... [2020-10-25 23:06:29,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5def8d40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 11:06:29, skipping insertion in model container [2020-10-25 23:06:29,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 11:06:29" (3/3) ... [2020-10-25 23:06:29,895 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product36.cil.c [2020-10-25 23:06:29,909 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 23:06:29,915 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-10-25 23:06:29,929 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-25 23:06:29,971 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 23:06:29,971 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 23:06:29,972 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 23:06:29,972 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 23:06:29,972 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 23:06:29,972 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 23:06:29,973 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 23:06:29,973 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 23:06:30,006 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states. [2020-10-25 23:06:30,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-25 23:06:30,014 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:06:30,015 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 23:06:30,016 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:06:30,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:06:30,024 INFO L82 PathProgramCache]: Analyzing trace with hash 1884756375, now seen corresponding path program 1 times [2020-10-25 23:06:30,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:06:30,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561486016] [2020-10-25 23:06:30,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:06:30,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:06:30,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 23:06:30,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561486016] [2020-10-25 23:06:30,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 23:06:30,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-25 23:06:30,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777472550] [2020-10-25 23:06:30,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-25 23:06:30,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:06:30,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-25 23:06:30,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 23:06:30,439 INFO L87 Difference]: Start difference. First operand 89 states. Second operand 2 states. [2020-10-25 23:06:30,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:06:30,493 INFO L93 Difference]: Finished difference Result 169 states and 254 transitions. [2020-10-25 23:06:30,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-25 23:06:30,495 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2020-10-25 23:06:30,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:06:30,514 INFO L225 Difference]: With dead ends: 169 [2020-10-25 23:06:30,514 INFO L226 Difference]: Without dead ends: 82 [2020-10-25 23:06:30,530 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 23:06:30,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-25 23:06:30,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-10-25 23:06:30,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-25 23:06:30,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 117 transitions. [2020-10-25 23:06:30,575 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 117 transitions. Word has length 18 [2020-10-25 23:06:30,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:06:30,575 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 117 transitions. [2020-10-25 23:06:30,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-25 23:06:30,575 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 117 transitions. [2020-10-25 23:06:30,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-25 23:06:30,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:06:30,577 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 23:06:30,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 23:06:30,578 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:06:30,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:06:30,578 INFO L82 PathProgramCache]: Analyzing trace with hash -434316730, now seen corresponding path program 1 times [2020-10-25 23:06:30,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:06:30,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163918740] [2020-10-25 23:06:30,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:06:30,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:06:30,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 23:06:30,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163918740] [2020-10-25 23:06:30,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 23:06:30,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 23:06:30,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023799863] [2020-10-25 23:06:30,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 23:06:30,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:06:30,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 23:06:30,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 23:06:30,723 INFO L87 Difference]: Start difference. First operand 82 states and 117 transitions. Second operand 3 states. [2020-10-25 23:06:30,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:06:30,745 INFO L93 Difference]: Finished difference Result 82 states and 117 transitions. [2020-10-25 23:06:30,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 23:06:30,753 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-25 23:06:30,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:06:30,755 INFO L225 Difference]: With dead ends: 82 [2020-10-25 23:06:30,757 INFO L226 Difference]: Without dead ends: 38 [2020-10-25 23:06:30,759 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 23:06:30,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-25 23:06:30,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-10-25 23:06:30,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-25 23:06:30,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 54 transitions. [2020-10-25 23:06:30,774 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 54 transitions. Word has length 19 [2020-10-25 23:06:30,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:06:30,775 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 54 transitions. [2020-10-25 23:06:30,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 23:06:30,776 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 54 transitions. [2020-10-25 23:06:30,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-25 23:06:30,779 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:06:30,780 INFO L422 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] [2020-10-25 23:06:30,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-25 23:06:30,782 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:06:30,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:06:30,785 INFO L82 PathProgramCache]: Analyzing trace with hash 2067739700, now seen corresponding path program 1 times [2020-10-25 23:06:30,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:06:30,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851101372] [2020-10-25 23:06:30,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:06:30,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:06:30,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 23:06:30,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851101372] [2020-10-25 23:06:30,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 23:06:30,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-25 23:06:30,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891532262] [2020-10-25 23:06:30,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-25 23:06:30,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:06:30,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-25 23:06:30,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-25 23:06:30,982 INFO L87 Difference]: Start difference. First operand 38 states and 54 transitions. Second operand 5 states. [2020-10-25 23:06:31,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:06:31,091 INFO L93 Difference]: Finished difference Result 95 states and 139 transitions. [2020-10-25 23:06:31,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-25 23:06:31,092 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-10-25 23:06:31,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:06:31,094 INFO L225 Difference]: With dead ends: 95 [2020-10-25 23:06:31,097 INFO L226 Difference]: Without dead ends: 63 [2020-10-25 23:06:31,098 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-25 23:06:31,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-25 23:06:31,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2020-10-25 23:06:31,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-25 23:06:31,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 86 transitions. [2020-10-25 23:06:31,125 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 86 transitions. Word has length 24 [2020-10-25 23:06:31,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:06:31,127 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 86 transitions. [2020-10-25 23:06:31,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-25 23:06:31,127 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 86 transitions. [2020-10-25 23:06:31,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-25 23:06:31,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:06:31,130 INFO L422 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] [2020-10-25 23:06:31,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-25 23:06:31,131 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:06:31,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:06:31,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1859072455, now seen corresponding path program 1 times [2020-10-25 23:06:31,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:06:31,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980926787] [2020-10-25 23:06:31,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:06:31,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:06:31,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 23:06:31,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980926787] [2020-10-25 23:06:31,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 23:06:31,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-25 23:06:31,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112002791] [2020-10-25 23:06:31,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 23:06:31,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:06:31,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 23:06:31,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 23:06:31,250 INFO L87 Difference]: Start difference. First operand 59 states and 86 transitions. Second operand 3 states. [2020-10-25 23:06:31,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:06:31,305 INFO L93 Difference]: Finished difference Result 135 states and 199 transitions. [2020-10-25 23:06:31,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 23:06:31,306 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-10-25 23:06:31,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:06:31,308 INFO L225 Difference]: With dead ends: 135 [2020-10-25 23:06:31,308 INFO L226 Difference]: Without dead ends: 82 [2020-10-25 23:06:31,309 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 23:06:31,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-25 23:06:31,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 80. [2020-10-25 23:06:31,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-25 23:06:31,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 114 transitions. [2020-10-25 23:06:31,330 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 114 transitions. Word has length 25 [2020-10-25 23:06:31,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:06:31,331 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 114 transitions. [2020-10-25 23:06:31,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 23:06:31,332 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 114 transitions. [2020-10-25 23:06:31,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-25 23:06:31,336 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:06:31,336 INFO L422 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] [2020-10-25 23:06:31,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-25 23:06:31,336 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:06:31,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:06:31,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1504399113, now seen corresponding path program 1 times [2020-10-25 23:06:31,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:06:31,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497640705] [2020-10-25 23:06:31,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:06:31,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:06:31,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 23:06:31,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497640705] [2020-10-25 23:06:31,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 23:06:31,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-25 23:06:31,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240778345] [2020-10-25 23:06:31,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-25 23:06:31,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:06:31,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-25 23:06:31,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-25 23:06:31,449 INFO L87 Difference]: Start difference. First operand 80 states and 114 transitions. Second operand 5 states. [2020-10-25 23:06:31,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:06:31,588 INFO L93 Difference]: Finished difference Result 427 states and 628 transitions. [2020-10-25 23:06:31,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-25 23:06:31,589 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-10-25 23:06:31,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:06:31,593 INFO L225 Difference]: With dead ends: 427 [2020-10-25 23:06:31,593 INFO L226 Difference]: Without dead ends: 353 [2020-10-25 23:06:31,594 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-25 23:06:31,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2020-10-25 23:06:31,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 144. [2020-10-25 23:06:31,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-25 23:06:31,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 201 transitions. [2020-10-25 23:06:31,618 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 201 transitions. Word has length 27 [2020-10-25 23:06:31,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:06:31,619 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 201 transitions. [2020-10-25 23:06:31,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-25 23:06:31,619 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 201 transitions. [2020-10-25 23:06:31,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-25 23:06:31,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:06:31,621 INFO L422 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] [2020-10-25 23:06:31,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-25 23:06:31,621 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:06:31,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:06:31,622 INFO L82 PathProgramCache]: Analyzing trace with hash -195864629, now seen corresponding path program 1 times [2020-10-25 23:06:31,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:06:31,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947349182] [2020-10-25 23:06:31,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:06:31,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 23:06:31,726 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 23:06:31,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 23:06:31,808 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 23:06:31,867 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-25 23:06:31,867 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-25 23:06:31,868 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-25 23:06:31,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 11:06:31 BoogieIcfgContainer [2020-10-25 23:06:31,987 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 23:06:31,987 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 23:06:31,987 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 23:06:31,988 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 23:06:31,988 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 11:06:29" (3/4) ... [2020-10-25 23:06:31,991 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-25 23:06:32,077 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 23:06:32,077 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 23:06:32,079 INFO L168 Benchmark]: Toolchain (without parser) took 4202.41 ms. Allocated memory was 41.9 MB in the beginning and 75.5 MB in the end (delta: 33.6 MB). Free memory was 28.1 MB in the beginning and 26.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 34.4 MB. Max. memory is 16.1 GB. [2020-10-25 23:06:32,080 INFO L168 Benchmark]: CDTParser took 0.49 ms. Allocated memory is still 41.9 MB. Free memory is still 22.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 23:06:32,081 INFO L168 Benchmark]: CACSL2BoogieTranslator took 555.66 ms. Allocated memory was 41.9 MB in the beginning and 52.4 MB in the end (delta: 10.5 MB). Free memory was 27.6 MB in the beginning and 28.6 MB in the end (delta: -1.1 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. [2020-10-25 23:06:32,081 INFO L168 Benchmark]: Boogie Procedure Inliner took 126.90 ms. Allocated memory is still 52.4 MB. Free memory was 28.6 MB in the beginning and 25.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-10-25 23:06:32,082 INFO L168 Benchmark]: Boogie Preprocessor took 84.62 ms. Allocated memory is still 52.4 MB. Free memory was 25.5 MB in the beginning and 35.4 MB in the end (delta: -9.9 MB). Peak memory consumption was 2.4 MB. Max. memory is 16.1 GB. [2020-10-25 23:06:32,084 INFO L168 Benchmark]: RCFGBuilder took 1228.21 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 35.4 MB in the beginning and 28.9 MB in the end (delta: 6.5 MB). Peak memory consumption was 16.6 MB. Max. memory is 16.1 GB. [2020-10-25 23:06:32,086 INFO L168 Benchmark]: TraceAbstraction took 2101.52 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 28.5 MB in the beginning and 37.9 MB in the end (delta: -9.4 MB). Peak memory consumption was 18.5 MB. Max. memory is 16.1 GB. [2020-10-25 23:06:32,087 INFO L168 Benchmark]: Witness Printer took 89.69 ms. Allocated memory is still 75.5 MB. Free memory was 37.9 MB in the beginning and 26.2 MB in the end (delta: 11.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-10-25 23:06:32,092 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49 ms. Allocated memory is still 41.9 MB. Free memory is still 22.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 555.66 ms. Allocated memory was 41.9 MB in the beginning and 52.4 MB in the end (delta: 10.5 MB). Free memory was 27.6 MB in the beginning and 28.6 MB in the end (delta: -1.1 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 126.90 ms. Allocated memory is still 52.4 MB. Free memory was 28.6 MB in the beginning and 25.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 84.62 ms. Allocated memory is still 52.4 MB. Free memory was 25.5 MB in the beginning and 35.4 MB in the end (delta: -9.9 MB). Peak memory consumption was 2.4 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1228.21 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 35.4 MB in the beginning and 28.9 MB in the end (delta: 6.5 MB). Peak memory consumption was 16.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2101.52 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 28.5 MB in the beginning and 37.9 MB in the end (delta: -9.4 MB). Peak memory consumption was 18.5 MB. Max. memory is 16.1 GB. * Witness Printer took 89.69 ms. Allocated memory is still 75.5 MB. Free memory was 37.9 MB in the beginning and 26.2 MB in the end (delta: 11.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L220] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L428] int pumpRunning = 0; [L429] int systemActive = 1; [L677] int waterLevel = 1; [L678] int methaneLevelCritical = 0; [L771] int cleanupTimeShifts = 4; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L847] int retValue_acc ; [L848] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L896] int retValue_acc ; [L899] retValue_acc = 1 [L900] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L854] tmp = valid_product() [L856] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L608] int splverifierCounter ; [L609] int tmp ; [L610] int tmp___0 ; [L611] int tmp___1 ; [L612] int tmp___2 ; [L615] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L617] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L619] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L625] tmp = __VERIFIER_nondet_int() [L627] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L695] COND TRUE waterLevel < 2 [L696] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L635] tmp___0 = __VERIFIER_nondet_int() [L637] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L645] tmp___2 = __VERIFIER_nondet_int() [L647] COND FALSE !(\read(tmp___2)) [L653] tmp___1 = __VERIFIER_nondet_int() [L655] COND TRUE \read(tmp___1) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L584] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L591] systemActive = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L436] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L443] COND FALSE !(\read(systemActive)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L906] int tmp ; [L907] int tmp___0 ; [L908] int tmp___1 ; [L716] int retValue_acc ; [L719] retValue_acc = methaneLevelCritical [L720] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L912] tmp = isMethaneLevelCritical() [L914] COND FALSE !(\read(tmp)) [L748] int retValue_acc ; [L751] retValue_acc = waterLevel [L752] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L918] tmp___0 = getWaterLevel() [L920] COND TRUE tmp___0 == 2 [L517] int retValue_acc ; [L520] retValue_acc = pumpRunning [L521] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L922] tmp___1 = isPumpRunning() [L924] COND FALSE !(\read(tmp___1)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L3] __assert_fail("0", "minepump_spec3_product36.cil.c", 3, "reach_error") VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 89 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.9s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 361 SDtfs, 522 SDslu, 281 SDs, 0 SdLazy, 58 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=144occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 215 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 141 NumberOfCodeBlocks, 141 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 108 ConstructedInterpolants, 0 QuantifiedInterpolants, 4660 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...