./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/minepump_spec1_product35.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d 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_1.3.100.v20150511-1540.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_product35.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 16128519e0e6ced40821c523f29c760d3ecfedbe ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.25-9a8b2e8 [2020-10-20 01:41:36,237 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 01:41:36,240 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 01:41:36,276 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 01:41:36,276 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 01:41:36,289 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 01:41:36,290 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 01:41:36,300 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 01:41:36,303 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 01:41:36,304 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 01:41:36,306 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 01:41:36,308 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 01:41:36,309 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 01:41:36,312 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 01:41:36,314 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 01:41:36,316 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 01:41:36,318 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 01:41:36,320 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 01:41:36,323 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 01:41:36,327 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 01:41:36,330 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 01:41:36,332 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 01:41:36,334 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 01:41:36,335 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 01:41:36,339 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 01:41:36,340 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 01:41:36,340 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 01:41:36,342 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 01:41:36,342 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 01:41:36,343 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 01:41:36,344 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 01:41:36,344 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 01:41:36,345 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 01:41:36,346 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 01:41:36,347 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 01:41:36,348 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 01:41:36,348 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 01:41:36,349 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 01:41:36,349 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 01:41:36,350 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 01:41:36,353 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 01:41:36,354 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 01:41:36,390 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 01:41:36,390 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 01:41:36,392 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 01:41:36,393 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 01:41:36,393 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 01:41:36,393 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 01:41:36,394 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 01:41:36,394 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 01:41:36,394 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 01:41:36,394 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 01:41:36,395 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 01:41:36,396 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 01:41:36,396 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 01:41:36,396 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 01:41:36,397 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 01:41:36,397 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 01:41:36,397 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 01:41:36,397 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 01:41:36,398 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 01:41:36,398 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 01:41:36,398 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 01:41:36,398 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 01:41:36,399 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 01:41:36,399 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 01:41:36,399 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 01:41:36,399 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 01:41:36,400 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 01:41:36,400 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 01:41:36,400 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 01:41:36,400 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> 16128519e0e6ced40821c523f29c760d3ecfedbe [2020-10-20 01:41:36,629 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 01:41:36,647 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 01:41:36,652 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 01:41:36,654 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 01:41:36,655 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 01:41:36,656 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec1_product35.cil.c [2020-10-20 01:41:36,718 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80f5193b5/c1972d0a0fc142d392a8a216083b6390/FLAG72a0665e1 [2020-10-20 01:41:37,243 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 01:41:37,244 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product35.cil.c [2020-10-20 01:41:37,260 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80f5193b5/c1972d0a0fc142d392a8a216083b6390/FLAG72a0665e1 [2020-10-20 01:41:37,549 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80f5193b5/c1972d0a0fc142d392a8a216083b6390 [2020-10-20 01:41:37,552 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 01:41:37,560 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 01:41:37,563 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 01:41:37,563 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 01:41:37,567 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 01:41:37,569 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:41:37" (1/1) ... [2020-10-20 01:41:37,572 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21135986 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:37, skipping insertion in model container [2020-10-20 01:41:37,572 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:41:37" (1/1) ... [2020-10-20 01:41:37,581 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 01:41:37,621 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 01:41:37,983 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:41:38,003 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 01:41:38,091 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:41:38,156 INFO L208 MainTranslator]: Completed translation [2020-10-20 01:41:38,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:38 WrapperNode [2020-10-20 01:41:38,158 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 01:41:38,160 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 01:41:38,160 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 01:41:38,160 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 01:41:38,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:38" (1/1) ... [2020-10-20 01:41:38,185 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:38" (1/1) ... [2020-10-20 01:41:38,226 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 01:41:38,226 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 01:41:38,227 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 01:41:38,227 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 01:41:38,235 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:38" (1/1) ... [2020-10-20 01:41:38,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:38" (1/1) ... [2020-10-20 01:41:38,239 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:38" (1/1) ... [2020-10-20 01:41:38,240 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:38" (1/1) ... [2020-10-20 01:41:38,249 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:38" (1/1) ... [2020-10-20 01:41:38,256 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:38" (1/1) ... [2020-10-20 01:41:38,260 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:38" (1/1) ... [2020-10-20 01:41:38,264 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 01:41:38,265 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 01:41:38,265 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 01:41:38,265 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 01:41:38,266 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:38" (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 [2020-10-20 01:41:38,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 01:41:38,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 01:41:38,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 01:41:38,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 01:41:39,341 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 01:41:39,341 INFO L298 CfgBuilder]: Removed 106 assume(true) statements. [2020-10-20 01:41:39,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:41:39 BoogieIcfgContainer [2020-10-20 01:41:39,344 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 01:41:39,346 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 01:41:39,347 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 01:41:39,350 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 01:41:39,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 01:41:37" (1/3) ... [2020-10-20 01:41:39,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17d9ca04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 01:41:39, skipping insertion in model container [2020-10-20 01:41:39,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:38" (2/3) ... [2020-10-20 01:41:39,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17d9ca04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 01:41:39, skipping insertion in model container [2020-10-20 01:41:39,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:41:39" (3/3) ... [2020-10-20 01:41:39,356 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product35.cil.c [2020-10-20 01:41:39,369 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 01:41:39,379 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-10-20 01:41:39,406 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-20 01:41:39,438 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 01:41:39,438 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 01:41:39,438 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 01:41:39,438 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 01:41:39,439 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 01:41:39,439 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 01:41:39,439 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 01:41:39,439 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 01:41:39,454 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states. [2020-10-20 01:41:39,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-20 01:41:39,460 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:39,461 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:41:39,461 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:39,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:39,466 INFO L82 PathProgramCache]: Analyzing trace with hash 349597533, now seen corresponding path program 1 times [2020-10-20 01:41:39,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:39,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811047593] [2020-10-20 01:41:39,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:39,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:39,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:41:39,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811047593] [2020-10-20 01:41:39,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:39,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 01:41:39,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420381724] [2020-10-20 01:41:39,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 01:41:39,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:39,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 01:41:39,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 01:41:39,794 INFO L87 Difference]: Start difference. First operand 83 states. Second operand 2 states. [2020-10-20 01:41:39,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:39,836 INFO L93 Difference]: Finished difference Result 157 states and 236 transitions. [2020-10-20 01:41:39,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 01:41:39,838 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-10-20 01:41:39,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:39,850 INFO L225 Difference]: With dead ends: 157 [2020-10-20 01:41:39,850 INFO L226 Difference]: Without dead ends: 76 [2020-10-20 01:41:39,853 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 [2020-10-20 01:41:39,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-20 01:41:39,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-10-20 01:41:39,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-20 01:41:39,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 108 transitions. [2020-10-20 01:41:39,896 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 108 transitions. Word has length 16 [2020-10-20 01:41:39,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:39,896 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 108 transitions. [2020-10-20 01:41:39,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 01:41:39,897 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 108 transitions. [2020-10-20 01:41:39,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 01:41:39,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:39,898 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:41:39,898 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 01:41:39,898 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:39,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:39,899 INFO L82 PathProgramCache]: Analyzing trace with hash -697159364, now seen corresponding path program 1 times [2020-10-20 01:41:39,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:39,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699893291] [2020-10-20 01:41:39,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:39,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:40,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:41:40,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699893291] [2020-10-20 01:41:40,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:40,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 01:41:40,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280071557] [2020-10-20 01:41:40,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 01:41:40,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:40,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 01:41:40,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:41:40,029 INFO L87 Difference]: Start difference. First operand 76 states and 108 transitions. Second operand 3 states. [2020-10-20 01:41:40,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:40,041 INFO L93 Difference]: Finished difference Result 76 states and 108 transitions. [2020-10-20 01:41:40,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:41:40,042 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-20 01:41:40,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:40,043 INFO L225 Difference]: With dead ends: 76 [2020-10-20 01:41:40,043 INFO L226 Difference]: Without dead ends: 36 [2020-10-20 01:41:40,044 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 [2020-10-20 01:41:40,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-20 01:41:40,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-20 01:41:40,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-20 01:41:40,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 51 transitions. [2020-10-20 01:41:40,050 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 51 transitions. Word has length 17 [2020-10-20 01:41:40,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:40,051 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 51 transitions. [2020-10-20 01:41:40,051 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 01:41:40,051 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 51 transitions. [2020-10-20 01:41:40,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-20 01:41:40,052 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:40,052 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] [2020-10-20 01:41:40,052 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 01:41:40,053 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:40,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:40,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1160602350, now seen corresponding path program 1 times [2020-10-20 01:41:40,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:40,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680269831] [2020-10-20 01:41:40,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:40,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:40,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:41:40,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680269831] [2020-10-20 01:41:40,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:40,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 01:41:40,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917842539] [2020-10-20 01:41:40,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 01:41:40,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:40,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 01:41:40,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:41:40,157 INFO L87 Difference]: Start difference. First operand 36 states and 51 transitions. Second operand 3 states. [2020-10-20 01:41:40,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:40,176 INFO L93 Difference]: Finished difference Result 96 states and 141 transitions. [2020-10-20 01:41:40,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:41:40,177 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-20 01:41:40,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:40,179 INFO L225 Difference]: With dead ends: 96 [2020-10-20 01:41:40,179 INFO L226 Difference]: Without dead ends: 66 [2020-10-20 01:41:40,180 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 [2020-10-20 01:41:40,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-20 01:41:40,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 62. [2020-10-20 01:41:40,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-20 01:41:40,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 91 transitions. [2020-10-20 01:41:40,192 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 91 transitions. Word has length 22 [2020-10-20 01:41:40,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:40,192 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 91 transitions. [2020-10-20 01:41:40,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 01:41:40,193 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 91 transitions. [2020-10-20 01:41:40,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-20 01:41:40,194 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:40,194 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] [2020-10-20 01:41:40,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 01:41:40,195 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:40,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:40,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1572373846, now seen corresponding path program 1 times [2020-10-20 01:41:40,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:40,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064967527] [2020-10-20 01:41:40,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:40,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:40,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:41:40,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064967527] [2020-10-20 01:41:40,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:40,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 01:41:40,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336515295] [2020-10-20 01:41:40,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 01:41:40,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:40,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 01:41:40,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:41:40,311 INFO L87 Difference]: Start difference. First operand 62 states and 91 transitions. Second operand 3 states. [2020-10-20 01:41:40,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:40,366 INFO L93 Difference]: Finished difference Result 159 states and 238 transitions. [2020-10-20 01:41:40,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:41:40,366 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-10-20 01:41:40,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:40,368 INFO L225 Difference]: With dead ends: 159 [2020-10-20 01:41:40,368 INFO L226 Difference]: Without dead ends: 103 [2020-10-20 01:41:40,369 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 [2020-10-20 01:41:40,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-20 01:41:40,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 101. [2020-10-20 01:41:40,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-20 01:41:40,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 147 transitions. [2020-10-20 01:41:40,385 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 147 transitions. Word has length 23 [2020-10-20 01:41:40,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:40,386 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 147 transitions. [2020-10-20 01:41:40,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 01:41:40,386 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 147 transitions. [2020-10-20 01:41:40,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-20 01:41:40,387 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:40,387 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] [2020-10-20 01:41:40,388 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 01:41:40,388 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:40,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:40,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1956458727, now seen corresponding path program 1 times [2020-10-20 01:41:40,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:40,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36315382] [2020-10-20 01:41:40,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:40,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:40,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:41:40,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36315382] [2020-10-20 01:41:40,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:40,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 01:41:40,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335043976] [2020-10-20 01:41:40,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:41:40,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:40,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:41:40,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:41:40,483 INFO L87 Difference]: Start difference. First operand 101 states and 147 transitions. Second operand 5 states. [2020-10-20 01:41:40,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:40,631 INFO L93 Difference]: Finished difference Result 501 states and 748 transitions. [2020-10-20 01:41:40,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 01:41:40,633 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-10-20 01:41:40,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:40,637 INFO L225 Difference]: With dead ends: 501 [2020-10-20 01:41:40,638 INFO L226 Difference]: Without dead ends: 406 [2020-10-20 01:41:40,639 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-20 01:41:40,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2020-10-20 01:41:40,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 186. [2020-10-20 01:41:40,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-10-20 01:41:40,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 267 transitions. [2020-10-20 01:41:40,674 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 267 transitions. Word has length 25 [2020-10-20 01:41:40,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:40,675 INFO L481 AbstractCegarLoop]: Abstraction has 186 states and 267 transitions. [2020-10-20 01:41:40,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:41:40,675 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 267 transitions. [2020-10-20 01:41:40,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-20 01:41:40,676 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:40,676 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] [2020-10-20 01:41:40,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 01:41:40,677 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:40,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:40,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1752651633, now seen corresponding path program 1 times [2020-10-20 01:41:40,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:40,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787420831] [2020-10-20 01:41:40,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:40,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:40,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:41:40,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787420831] [2020-10-20 01:41:40,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:40,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 01:41:40,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583246843] [2020-10-20 01:41:40,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:41:40,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:40,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:41:40,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:41:40,777 INFO L87 Difference]: Start difference. First operand 186 states and 267 transitions. Second operand 5 states. [2020-10-20 01:41:40,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:40,961 INFO L93 Difference]: Finished difference Result 524 states and 758 transitions. [2020-10-20 01:41:40,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 01:41:40,974 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-10-20 01:41:40,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:40,977 INFO L225 Difference]: With dead ends: 524 [2020-10-20 01:41:40,977 INFO L226 Difference]: Without dead ends: 522 [2020-10-20 01:41:40,978 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-20 01:41:40,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2020-10-20 01:41:41,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 186. [2020-10-20 01:41:41,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-10-20 01:41:41,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 265 transitions. [2020-10-20 01:41:41,024 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 265 transitions. Word has length 26 [2020-10-20 01:41:41,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:41,025 INFO L481 AbstractCegarLoop]: Abstraction has 186 states and 265 transitions. [2020-10-20 01:41:41,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:41:41,025 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 265 transitions. [2020-10-20 01:41:41,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-20 01:41:41,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:41,034 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, 1, 1] [2020-10-20 01:41:41,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 01:41:41,034 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:41,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:41,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1960990159, now seen corresponding path program 1 times [2020-10-20 01:41:41,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:41,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163821024] [2020-10-20 01:41:41,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:41,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:41,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:41:41,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163821024] [2020-10-20 01:41:41,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:41,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 01:41:41,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155438587] [2020-10-20 01:41:41,130 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:41:41,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:41,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:41:41,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:41:41,131 INFO L87 Difference]: Start difference. First operand 186 states and 265 transitions. Second operand 5 states. [2020-10-20 01:41:41,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:41,210 INFO L93 Difference]: Finished difference Result 510 states and 719 transitions. [2020-10-20 01:41:41,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 01:41:41,211 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-10-20 01:41:41,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:41,213 INFO L225 Difference]: With dead ends: 510 [2020-10-20 01:41:41,213 INFO L226 Difference]: Without dead ends: 330 [2020-10-20 01:41:41,215 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-20 01:41:41,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2020-10-20 01:41:41,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 198. [2020-10-20 01:41:41,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-10-20 01:41:41,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 277 transitions. [2020-10-20 01:41:41,233 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 277 transitions. Word has length 30 [2020-10-20 01:41:41,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:41,233 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 277 transitions. [2020-10-20 01:41:41,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:41:41,233 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 277 transitions. [2020-10-20 01:41:41,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-20 01:41:41,235 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:41,235 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, 1, 1] [2020-10-20 01:41:41,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-20 01:41:41,236 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:41,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:41,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1940950127, now seen corresponding path program 1 times [2020-10-20 01:41:41,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:41,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148810715] [2020-10-20 01:41:41,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:41,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:41,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:41:41,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148810715] [2020-10-20 01:41:41,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:41,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 01:41:41,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473953338] [2020-10-20 01:41:41,292 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:41:41,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:41,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:41:41,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:41:41,293 INFO L87 Difference]: Start difference. First operand 198 states and 277 transitions. Second operand 5 states. [2020-10-20 01:41:41,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:41,411 INFO L93 Difference]: Finished difference Result 578 states and 793 transitions. [2020-10-20 01:41:41,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 01:41:41,412 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-10-20 01:41:41,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:41,414 INFO L225 Difference]: With dead ends: 578 [2020-10-20 01:41:41,414 INFO L226 Difference]: Without dead ends: 386 [2020-10-20 01:41:41,415 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-20 01:41:41,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2020-10-20 01:41:41,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 206. [2020-10-20 01:41:41,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-10-20 01:41:41,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 285 transitions. [2020-10-20 01:41:41,433 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 285 transitions. Word has length 30 [2020-10-20 01:41:41,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:41,434 INFO L481 AbstractCegarLoop]: Abstraction has 206 states and 285 transitions. [2020-10-20 01:41:41,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:41:41,434 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 285 transitions. [2020-10-20 01:41:41,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-20 01:41:41,435 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:41,435 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, 1, 1] [2020-10-20 01:41:41,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-20 01:41:41,436 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:41,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:41,436 INFO L82 PathProgramCache]: Analyzing trace with hash -2095851731, now seen corresponding path program 1 times [2020-10-20 01:41:41,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:41,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512129818] [2020-10-20 01:41:41,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:41,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:41,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:41:41,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512129818] [2020-10-20 01:41:41,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:41,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 01:41:41,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218318784] [2020-10-20 01:41:41,497 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 01:41:41,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:41,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 01:41:41,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:41:41,498 INFO L87 Difference]: Start difference. First operand 206 states and 285 transitions. Second operand 3 states. [2020-10-20 01:41:41,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:41,535 INFO L93 Difference]: Finished difference Result 506 states and 694 transitions. [2020-10-20 01:41:41,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:41:41,536 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-10-20 01:41:41,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:41,538 INFO L225 Difference]: With dead ends: 506 [2020-10-20 01:41:41,538 INFO L226 Difference]: Without dead ends: 306 [2020-10-20 01:41:41,539 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 [2020-10-20 01:41:41,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-10-20 01:41:41,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 306. [2020-10-20 01:41:41,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2020-10-20 01:41:41,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 407 transitions. [2020-10-20 01:41:41,564 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 407 transitions. Word has length 30 [2020-10-20 01:41:41,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:41,565 INFO L481 AbstractCegarLoop]: Abstraction has 306 states and 407 transitions. [2020-10-20 01:41:41,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 01:41:41,565 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 407 transitions. [2020-10-20 01:41:41,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-20 01:41:41,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:41,566 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, 1, 1, 1] [2020-10-20 01:41:41,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-20 01:41:41,567 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:41,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:41,567 INFO L82 PathProgramCache]: Analyzing trace with hash 191299371, now seen corresponding path program 1 times [2020-10-20 01:41:41,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:41,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471389360] [2020-10-20 01:41:41,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:41,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 01:41:41,655 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 01:41:41,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 01:41:41,705 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 01:41:41,753 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 01:41:41,753 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 01:41:41,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-20 01:41:41,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 01:41:41 BoogieIcfgContainer [2020-10-20 01:41:41,854 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 01:41:41,855 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 01:41:41,855 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 01:41:41,855 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 01:41:41,856 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:41:39" (3/4) ... [2020-10-20 01:41:41,862 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 01:41:42,024 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 01:41:42,024 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 01:41:42,027 INFO L168 Benchmark]: Toolchain (without parser) took 4473.08 ms. Allocated memory was 34.1 MB in the beginning and 65.5 MB in the end (delta: 31.5 MB). Free memory was 10.4 MB in the beginning and 32.8 MB in the end (delta: -22.4 MB). Peak memory consumption was 31.0 MB. Max. memory is 14.3 GB. [2020-10-20 01:41:42,027 INFO L168 Benchmark]: CDTParser took 0.87 ms. Allocated memory is still 33.0 MB. Free memory is still 17.8 MB. There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 01:41:42,028 INFO L168 Benchmark]: CACSL2BoogieTranslator took 595.33 ms. Allocated memory was 34.1 MB in the beginning and 42.5 MB in the end (delta: 8.4 MB). Free memory was 9.5 MB in the beginning and 24.2 MB in the end (delta: -14.7 MB). Peak memory consumption was 9.3 MB. Max. memory is 14.3 GB. [2020-10-20 01:41:42,028 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.70 ms. Allocated memory is still 42.5 MB. Free memory was 24.2 MB in the beginning and 20.9 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 14.3 GB. [2020-10-20 01:41:42,028 INFO L168 Benchmark]: Boogie Preprocessor took 38.17 ms. Allocated memory is still 42.5 MB. Free memory was 20.9 MB in the beginning and 18.5 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 14.3 GB. [2020-10-20 01:41:42,029 INFO L168 Benchmark]: RCFGBuilder took 1079.33 ms. Allocated memory was 42.5 MB in the beginning and 46.1 MB in the end (delta: 3.7 MB). Free memory was 18.5 MB in the beginning and 13.0 MB in the end (delta: 5.5 MB). Peak memory consumption was 10.1 MB. Max. memory is 14.3 GB. [2020-10-20 01:41:42,029 INFO L168 Benchmark]: TraceAbstraction took 2508.71 ms. Allocated memory was 46.1 MB in the beginning and 61.3 MB in the end (delta: 15.2 MB). Free memory was 12.7 MB in the beginning and 13.1 MB in the end (delta: -418.6 kB). Peak memory consumption was 14.8 MB. Max. memory is 14.3 GB. [2020-10-20 01:41:42,030 INFO L168 Benchmark]: Witness Printer took 169.78 ms. Allocated memory was 61.3 MB in the beginning and 65.5 MB in the end (delta: 4.2 MB). Free memory was 13.1 MB in the beginning and 32.8 MB in the end (delta: -19.7 MB). Peak memory consumption was 6.4 MB. Max. memory is 14.3 GB. [2020-10-20 01:41:42,034 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.87 ms. Allocated memory is still 33.0 MB. Free memory is still 17.8 MB. There was no memory consumed. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 595.33 ms. Allocated memory was 34.1 MB in the beginning and 42.5 MB in the end (delta: 8.4 MB). Free memory was 9.5 MB in the beginning and 24.2 MB in the end (delta: -14.7 MB). Peak memory consumption was 9.3 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 66.70 ms. Allocated memory is still 42.5 MB. Free memory was 24.2 MB in the beginning and 20.9 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 38.17 ms. Allocated memory is still 42.5 MB. Free memory was 20.9 MB in the beginning and 18.5 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 14.3 GB. * RCFGBuilder took 1079.33 ms. Allocated memory was 42.5 MB in the beginning and 46.1 MB in the end (delta: 3.7 MB). Free memory was 18.5 MB in the beginning and 13.0 MB in the end (delta: 5.5 MB). Peak memory consumption was 10.1 MB. Max. memory is 14.3 GB. * TraceAbstraction took 2508.71 ms. Allocated memory was 46.1 MB in the beginning and 61.3 MB in the end (delta: 15.2 MB). Free memory was 12.7 MB in the beginning and 13.1 MB in the end (delta: -418.6 kB). Peak memory consumption was 14.8 MB. Max. memory is 14.3 GB. * Witness Printer took 169.78 ms. Allocated memory was 61.3 MB in the beginning and 65.5 MB in the end (delta: 4.2 MB). Free memory was 13.1 MB in the beginning and 32.8 MB in the end (delta: -19.7 MB). Peak memory consumption was 6.4 MB. Max. memory is 14.3 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: [L49] int waterLevel = 1; [L50] int methaneLevelCritical = 0; [L252] int pumpRunning = 0; [L253] int systemActive = 1; [L457] int cleanupTimeShifts = 4; [L722] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L530] int retValue_acc ; [L531] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L448] int retValue_acc ; [L451] retValue_acc = 1 [L452] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L537] tmp = valid_product() [L539] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L183] int splverifierCounter ; [L184] int tmp ; [L185] int tmp___0 ; [L186] int tmp___1 ; [L187] int tmp___2 ; [L190] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L192] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L194] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L200] tmp = __VERIFIER_nondet_int() [L202] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L67] COND TRUE waterLevel < 2 [L68] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L210] tmp___0 = __VERIFIER_nondet_int() [L212] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L79] COND FALSE !(\read(methaneLevelCritical)) [L82] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L220] tmp___2 = __VERIFIER_nondet_int() [L222] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L259] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L266] COND TRUE \read(systemActive) [L288] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L291] COND TRUE ! pumpRunning [L385] int retValue_acc ; [L386] int tmp ; [L387] int tmp___0 ; [L129] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L132] COND FALSE !(waterLevel < 2) [L136] retValue_acc = 0 [L137] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L391] tmp = isHighWaterSensorDry() [L393] COND FALSE !(\read(tmp)) [L396] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L398] retValue_acc = tmp___0 [L399] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L293] tmp = isHighWaterLevel() [L295] COND TRUE \read(tmp) [L316] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L154] int tmp ; [L155] int tmp___0 ; [L88] int retValue_acc ; [L91] retValue_acc = methaneLevelCritical [L92] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L159] tmp = isMethaneLevelCritical() [L161] COND TRUE \read(tmp) [L340] int retValue_acc ; [L343] retValue_acc = pumpRunning [L344] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L163] tmp___0 = isPumpRunning() [L165] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L3] __assert_fail("0", "minepump_spec1_product35.cil.c", 3, "reach_error") VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 83 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.3s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 626 SDtfs, 878 SDslu, 958 SDs, 0 SdLazy, 119 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=306occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 874 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 250 NumberOfCodeBlocks, 250 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 210 ConstructedInterpolants, 0 QuantifiedInterpolants, 11056 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! Received shutdown request...