./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/minepump_spec4_product45.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_spec4_product45.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 9380fcd5e8279275d54611c820c997d6cd3c87ac ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 01:44:13,354 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 01:44:13,358 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 01:44:13,401 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 01:44:13,402 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 01:44:13,413 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 01:44:13,415 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 01:44:13,418 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 01:44:13,422 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 01:44:13,425 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 01:44:13,427 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 01:44:13,429 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 01:44:13,429 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 01:44:13,432 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 01:44:13,434 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 01:44:13,437 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 01:44:13,439 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 01:44:13,441 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 01:44:13,443 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 01:44:13,450 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 01:44:13,451 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 01:44:13,454 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 01:44:13,455 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 01:44:13,456 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 01:44:13,461 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 01:44:13,461 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 01:44:13,461 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 01:44:13,462 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 01:44:13,462 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 01:44:13,466 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 01:44:13,467 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 01:44:13,468 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 01:44:13,468 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 01:44:13,469 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 01:44:13,470 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 01:44:13,470 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 01:44:13,471 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 01:44:13,471 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 01:44:13,471 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 01:44:13,472 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 01:44:13,473 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 01:44:13,473 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 01:44:13,500 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 01:44:13,500 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 01:44:13,501 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 01:44:13,501 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 01:44:13,502 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 01:44:13,502 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 01:44:13,502 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 01:44:13,502 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 01:44:13,502 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 01:44:13,503 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 01:44:13,503 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 01:44:13,503 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 01:44:13,503 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 01:44:13,503 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 01:44:13,503 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 01:44:13,504 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 01:44:13,504 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 01:44:13,504 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 01:44:13,504 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 01:44:13,504 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 01:44:13,505 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 01:44:13,505 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 01:44:13,505 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 01:44:13,505 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 01:44:13,505 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 01:44:13,506 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 01:44:13,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 01:44:13,506 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 01:44:13,506 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 01:44:13,506 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 -> 9380fcd5e8279275d54611c820c997d6cd3c87ac [2020-10-20 01:44:13,707 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 01:44:13,716 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 01:44:13,722 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 01:44:13,724 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 01:44:13,725 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 01:44:13,725 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec4_product45.cil.c [2020-10-20 01:44:13,799 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6be71f5a1/a664b1cc0a024abc9c236e19acc14691/FLAG0b83b2d4d [2020-10-20 01:44:14,383 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 01:44:14,384 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product45.cil.c [2020-10-20 01:44:14,397 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6be71f5a1/a664b1cc0a024abc9c236e19acc14691/FLAG0b83b2d4d [2020-10-20 01:44:14,628 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6be71f5a1/a664b1cc0a024abc9c236e19acc14691 [2020-10-20 01:44:14,632 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 01:44:14,639 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 01:44:14,640 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 01:44:14,640 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 01:44:14,644 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 01:44:14,646 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:44:14" (1/1) ... [2020-10-20 01:44:14,650 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e037be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:14, skipping insertion in model container [2020-10-20 01:44:14,650 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:44:14" (1/1) ... [2020-10-20 01:44:14,659 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 01:44:14,728 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 01:44:15,117 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:44:15,130 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 01:44:15,249 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:44:15,307 INFO L208 MainTranslator]: Completed translation [2020-10-20 01:44:15,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:15 WrapperNode [2020-10-20 01:44:15,308 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 01:44:15,309 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 01:44:15,309 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 01:44:15,310 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 01:44:15,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:15" (1/1) ... [2020-10-20 01:44:15,347 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:15" (1/1) ... [2020-10-20 01:44:15,395 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 01:44:15,396 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 01:44:15,396 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 01:44:15,396 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 01:44:15,407 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:15" (1/1) ... [2020-10-20 01:44:15,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:15" (1/1) ... [2020-10-20 01:44:15,413 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:15" (1/1) ... [2020-10-20 01:44:15,414 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:15" (1/1) ... [2020-10-20 01:44:15,429 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:15" (1/1) ... [2020-10-20 01:44:15,437 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:15" (1/1) ... [2020-10-20 01:44:15,442 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:15" (1/1) ... [2020-10-20 01:44:15,447 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 01:44:15,448 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 01:44:15,448 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 01:44:15,448 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 01:44:15,449 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:15" (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 01:44:15,536 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 01:44:15,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 01:44:15,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 01:44:15,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 01:44:16,527 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 01:44:16,527 INFO L298 CfgBuilder]: Removed 198 assume(true) statements. [2020-10-20 01:44:16,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:44:16 BoogieIcfgContainer [2020-10-20 01:44:16,529 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 01:44:16,531 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 01:44:16,531 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 01:44:16,534 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 01:44:16,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 01:44:14" (1/3) ... [2020-10-20 01:44:16,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c8cafc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 01:44:16, skipping insertion in model container [2020-10-20 01:44:16,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:15" (2/3) ... [2020-10-20 01:44:16,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c8cafc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 01:44:16, skipping insertion in model container [2020-10-20 01:44:16,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:44:16" (3/3) ... [2020-10-20 01:44:16,538 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product45.cil.c [2020-10-20 01:44:16,551 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 01:44:16,559 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-10-20 01:44:16,574 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-20 01:44:16,602 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 01:44:16,602 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 01:44:16,602 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 01:44:16,602 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 01:44:16,602 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 01:44:16,603 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 01:44:16,603 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 01:44:16,603 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 01:44:16,623 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states. [2020-10-20 01:44:16,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-20 01:44:16,631 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:16,632 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:44:16,633 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:16,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:16,639 INFO L82 PathProgramCache]: Analyzing trace with hash -175303324, now seen corresponding path program 1 times [2020-10-20 01:44:16,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:16,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323946465] [2020-10-20 01:44:16,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:16,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:16,944 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 01:44:16,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323946465] [2020-10-20 01:44:16,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:44:16,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 01:44:16,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044703997] [2020-10-20 01:44:16,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 01:44:16,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:44:16,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 01:44:16,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 01:44:16,971 INFO L87 Difference]: Start difference. First operand 132 states. Second operand 2 states. [2020-10-20 01:44:17,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:44:17,031 INFO L93 Difference]: Finished difference Result 255 states and 380 transitions. [2020-10-20 01:44:17,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 01:44:17,032 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-10-20 01:44:17,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:44:17,045 INFO L225 Difference]: With dead ends: 255 [2020-10-20 01:44:17,045 INFO L226 Difference]: Without dead ends: 125 [2020-10-20 01:44:17,049 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 01:44:17,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-20 01:44:17,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-10-20 01:44:17,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-20 01:44:17,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 180 transitions. [2020-10-20 01:44:17,094 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 180 transitions. Word has length 16 [2020-10-20 01:44:17,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:44:17,095 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 180 transitions. [2020-10-20 01:44:17,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 01:44:17,095 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 180 transitions. [2020-10-20 01:44:17,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 01:44:17,096 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:17,096 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 01:44:17,096 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 01:44:17,097 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:17,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:17,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1222060221, now seen corresponding path program 1 times [2020-10-20 01:44:17,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:17,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125268644] [2020-10-20 01:44:17,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:17,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:17,198 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 01:44:17,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125268644] [2020-10-20 01:44:17,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:44:17,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 01:44:17,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836621963] [2020-10-20 01:44:17,201 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 01:44:17,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:44:17,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 01:44:17,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:44:17,202 INFO L87 Difference]: Start difference. First operand 125 states and 180 transitions. Second operand 3 states. [2020-10-20 01:44:17,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:44:17,216 INFO L93 Difference]: Finished difference Result 125 states and 180 transitions. [2020-10-20 01:44:17,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:44:17,216 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-20 01:44:17,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:44:17,217 INFO L225 Difference]: With dead ends: 125 [2020-10-20 01:44:17,217 INFO L226 Difference]: Without dead ends: 51 [2020-10-20 01:44:17,219 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 01:44:17,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-20 01:44:17,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-10-20 01:44:17,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-20 01:44:17,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 73 transitions. [2020-10-20 01:44:17,225 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 73 transitions. Word has length 17 [2020-10-20 01:44:17,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:44:17,225 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 73 transitions. [2020-10-20 01:44:17,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 01:44:17,226 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 73 transitions. [2020-10-20 01:44:17,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-20 01:44:17,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:17,227 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 01:44:17,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 01:44:17,227 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:17,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:17,228 INFO L82 PathProgramCache]: Analyzing trace with hash -2019078694, now seen corresponding path program 1 times [2020-10-20 01:44:17,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:17,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015823187] [2020-10-20 01:44:17,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:17,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:17,325 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 01:44:17,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015823187] [2020-10-20 01:44:17,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:44:17,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 01:44:17,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734083564] [2020-10-20 01:44:17,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 01:44:17,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:44:17,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 01:44:17,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:44:17,328 INFO L87 Difference]: Start difference. First operand 51 states and 73 transitions. Second operand 3 states. [2020-10-20 01:44:17,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:44:17,346 INFO L93 Difference]: Finished difference Result 96 states and 140 transitions. [2020-10-20 01:44:17,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:44:17,348 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-20 01:44:17,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:44:17,349 INFO L225 Difference]: With dead ends: 96 [2020-10-20 01:44:17,350 INFO L226 Difference]: Without dead ends: 51 [2020-10-20 01:44:17,350 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 01:44:17,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-20 01:44:17,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-10-20 01:44:17,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-20 01:44:17,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 72 transitions. [2020-10-20 01:44:17,357 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 72 transitions. Word has length 22 [2020-10-20 01:44:17,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:44:17,357 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 72 transitions. [2020-10-20 01:44:17,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 01:44:17,357 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 72 transitions. [2020-10-20 01:44:17,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-20 01:44:17,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:17,358 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] [2020-10-20 01:44:17,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 01:44:17,359 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:17,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:17,359 INFO L82 PathProgramCache]: Analyzing trace with hash -1511639432, now seen corresponding path program 1 times [2020-10-20 01:44:17,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:17,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234208384] [2020-10-20 01:44:17,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:17,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:17,420 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 01:44:17,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234208384] [2020-10-20 01:44:17,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:44:17,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 01:44:17,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678621486] [2020-10-20 01:44:17,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 01:44:17,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:44:17,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 01:44:17,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:44:17,422 INFO L87 Difference]: Start difference. First operand 51 states and 72 transitions. Second operand 3 states. [2020-10-20 01:44:17,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:44:17,459 INFO L93 Difference]: Finished difference Result 117 states and 168 transitions. [2020-10-20 01:44:17,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:44:17,459 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-10-20 01:44:17,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:44:17,460 INFO L225 Difference]: With dead ends: 117 [2020-10-20 01:44:17,461 INFO L226 Difference]: Without dead ends: 72 [2020-10-20 01:44:17,461 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 01:44:17,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-20 01:44:17,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2020-10-20 01:44:17,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-20 01:44:17,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 98 transitions. [2020-10-20 01:44:17,470 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 98 transitions. Word has length 24 [2020-10-20 01:44:17,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:44:17,471 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 98 transitions. [2020-10-20 01:44:17,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 01:44:17,471 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 98 transitions. [2020-10-20 01:44:17,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-20 01:44:17,472 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:17,472 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 01:44:17,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 01:44:17,472 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:17,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:17,473 INFO L82 PathProgramCache]: Analyzing trace with hash 406595852, now seen corresponding path program 1 times [2020-10-20 01:44:17,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:17,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819580963] [2020-10-20 01:44:17,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:17,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:17,564 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 01:44:17,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819580963] [2020-10-20 01:44:17,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:44:17,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 01:44:17,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727752099] [2020-10-20 01:44:17,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:44:17,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:44:17,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:44:17,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:44:17,566 INFO L87 Difference]: Start difference. First operand 70 states and 98 transitions. Second operand 5 states. [2020-10-20 01:44:17,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:44:17,660 INFO L93 Difference]: Finished difference Result 247 states and 354 transitions. [2020-10-20 01:44:17,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 01:44:17,661 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-10-20 01:44:17,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:44:17,662 INFO L225 Difference]: With dead ends: 247 [2020-10-20 01:44:17,663 INFO L226 Difference]: Without dead ends: 183 [2020-10-20 01:44:17,664 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 [2020-10-20 01:44:17,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-20 01:44:17,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 113. [2020-10-20 01:44:17,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-20 01:44:17,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 155 transitions. [2020-10-20 01:44:17,678 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 155 transitions. Word has length 30 [2020-10-20 01:44:17,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:44:17,678 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 155 transitions. [2020-10-20 01:44:17,679 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:44:17,679 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 155 transitions. [2020-10-20 01:44:17,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-20 01:44:17,680 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:17,680 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 01:44:17,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 01:44:17,699 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:17,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:17,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1601220342, now seen corresponding path program 1 times [2020-10-20 01:44:17,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:17,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651680316] [2020-10-20 01:44:17,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:17,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:17,771 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 01:44:17,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651680316] [2020-10-20 01:44:17,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:44:17,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 01:44:17,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215257925] [2020-10-20 01:44:17,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 01:44:17,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:44:17,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 01:44:17,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 01:44:17,775 INFO L87 Difference]: Start difference. First operand 113 states and 155 transitions. Second operand 4 states. [2020-10-20 01:44:17,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:44:17,915 INFO L93 Difference]: Finished difference Result 234 states and 328 transitions. [2020-10-20 01:44:17,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 01:44:17,915 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-20 01:44:17,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:44:17,917 INFO L225 Difference]: With dead ends: 234 [2020-10-20 01:44:17,917 INFO L226 Difference]: Without dead ends: 170 [2020-10-20 01:44:17,918 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 01:44:17,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-20 01:44:17,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 167. [2020-10-20 01:44:17,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-20 01:44:17,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 230 transitions. [2020-10-20 01:44:17,934 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 230 transitions. Word has length 31 [2020-10-20 01:44:17,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:44:17,935 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 230 transitions. [2020-10-20 01:44:17,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 01:44:17,935 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 230 transitions. [2020-10-20 01:44:17,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-20 01:44:17,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:17,937 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 01:44:17,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 01:44:17,937 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:17,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:17,938 INFO L82 PathProgramCache]: Analyzing trace with hash -1343054904, now seen corresponding path program 1 times [2020-10-20 01:44:17,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:17,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038747756] [2020-10-20 01:44:17,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:17,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:18,012 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 01:44:18,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038747756] [2020-10-20 01:44:18,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:44:18,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 01:44:18,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513926445] [2020-10-20 01:44:18,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 01:44:18,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:44:18,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 01:44:18,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 01:44:18,014 INFO L87 Difference]: Start difference. First operand 167 states and 230 transitions. Second operand 4 states. [2020-10-20 01:44:18,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:44:18,070 INFO L93 Difference]: Finished difference Result 465 states and 652 transitions. [2020-10-20 01:44:18,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 01:44:18,071 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-20 01:44:18,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:44:18,073 INFO L225 Difference]: With dead ends: 465 [2020-10-20 01:44:18,074 INFO L226 Difference]: Without dead ends: 346 [2020-10-20 01:44:18,074 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:44:18,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-10-20 01:44:18,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 167. [2020-10-20 01:44:18,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-20 01:44:18,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 228 transitions. [2020-10-20 01:44:18,090 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 228 transitions. Word has length 31 [2020-10-20 01:44:18,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:44:18,091 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 228 transitions. [2020-10-20 01:44:18,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 01:44:18,091 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 228 transitions. [2020-10-20 01:44:18,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-20 01:44:18,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:18,093 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 01:44:18,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-20 01:44:18,094 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:18,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:18,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1736081914, now seen corresponding path program 1 times [2020-10-20 01:44:18,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:18,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917405058] [2020-10-20 01:44:18,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:18,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:18,191 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 01:44:18,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917405058] [2020-10-20 01:44:18,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:44:18,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-20 01:44:18,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24646270] [2020-10-20 01:44:18,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 01:44:18,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:44:18,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 01:44:18,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-20 01:44:18,193 INFO L87 Difference]: Start difference. First operand 167 states and 228 transitions. Second operand 6 states. [2020-10-20 01:44:18,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:44:18,314 INFO L93 Difference]: Finished difference Result 582 states and 811 transitions. [2020-10-20 01:44:18,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 01:44:18,315 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-10-20 01:44:18,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:44:18,318 INFO L225 Difference]: With dead ends: 582 [2020-10-20 01:44:18,318 INFO L226 Difference]: Without dead ends: 421 [2020-10-20 01:44:18,319 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-20 01:44:18,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2020-10-20 01:44:18,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 176. [2020-10-20 01:44:18,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-10-20 01:44:18,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 235 transitions. [2020-10-20 01:44:18,337 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 235 transitions. Word has length 31 [2020-10-20 01:44:18,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:44:18,337 INFO L481 AbstractCegarLoop]: Abstraction has 176 states and 235 transitions. [2020-10-20 01:44:18,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 01:44:18,338 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 235 transitions. [2020-10-20 01:44:18,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-20 01:44:18,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:18,339 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, 1, 1, 1] [2020-10-20 01:44:18,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-20 01:44:18,340 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:18,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:18,340 INFO L82 PathProgramCache]: Analyzing trace with hash -468355170, now seen corresponding path program 1 times [2020-10-20 01:44:18,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:18,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212232369] [2020-10-20 01:44:18,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:18,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:18,457 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 01:44:18,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212232369] [2020-10-20 01:44:18,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:44:18,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 01:44:18,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497640069] [2020-10-20 01:44:18,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 01:44:18,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:44:18,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 01:44:18,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-20 01:44:18,459 INFO L87 Difference]: Start difference. First operand 176 states and 235 transitions. Second operand 6 states. [2020-10-20 01:44:18,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:44:18,690 INFO L93 Difference]: Finished difference Result 834 states and 1114 transitions. [2020-10-20 01:44:18,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-20 01:44:18,691 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2020-10-20 01:44:18,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:44:18,695 INFO L225 Difference]: With dead ends: 834 [2020-10-20 01:44:18,695 INFO L226 Difference]: Without dead ends: 664 [2020-10-20 01:44:18,696 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-10-20 01:44:18,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2020-10-20 01:44:18,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 334. [2020-10-20 01:44:18,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 334 states. [2020-10-20 01:44:18,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 439 transitions. [2020-10-20 01:44:18,740 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 439 transitions. Word has length 34 [2020-10-20 01:44:18,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:44:18,742 INFO L481 AbstractCegarLoop]: Abstraction has 334 states and 439 transitions. [2020-10-20 01:44:18,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 01:44:18,742 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 439 transitions. [2020-10-20 01:44:18,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-20 01:44:18,747 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:18,748 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, 1, 1, 1] [2020-10-20 01:44:18,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-20 01:44:18,748 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:18,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:18,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1306652192, now seen corresponding path program 1 times [2020-10-20 01:44:18,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:18,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423009501] [2020-10-20 01:44:18,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:18,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:18,837 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 01:44:18,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423009501] [2020-10-20 01:44:18,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:44:18,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 01:44:18,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163521788] [2020-10-20 01:44:18,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:44:18,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:44:18,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:44:18,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:44:18,840 INFO L87 Difference]: Start difference. First operand 334 states and 439 transitions. Second operand 5 states. [2020-10-20 01:44:19,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:44:19,108 INFO L93 Difference]: Finished difference Result 740 states and 975 transitions. [2020-10-20 01:44:19,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 01:44:19,109 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-10-20 01:44:19,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:44:19,112 INFO L225 Difference]: With dead ends: 740 [2020-10-20 01:44:19,113 INFO L226 Difference]: Without dead ends: 502 [2020-10-20 01:44:19,114 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-20 01:44:19,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2020-10-20 01:44:19,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 328. [2020-10-20 01:44:19,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2020-10-20 01:44:19,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 427 transitions. [2020-10-20 01:44:19,143 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 427 transitions. Word has length 34 [2020-10-20 01:44:19,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:44:19,144 INFO L481 AbstractCegarLoop]: Abstraction has 328 states and 427 transitions. [2020-10-20 01:44:19,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:44:19,144 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 427 transitions. [2020-10-20 01:44:19,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-20 01:44:19,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:19,145 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 01:44:19,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-20 01:44:19,146 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:19,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:19,147 INFO L82 PathProgramCache]: Analyzing trace with hash -334162626, now seen corresponding path program 1 times [2020-10-20 01:44:19,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:19,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084327580] [2020-10-20 01:44:19,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:19,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:19,220 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-20 01:44:19,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084327580] [2020-10-20 01:44:19,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:44:19,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 01:44:19,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908665498] [2020-10-20 01:44:19,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:44:19,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:44:19,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:44:19,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:44:19,222 INFO L87 Difference]: Start difference. First operand 328 states and 427 transitions. Second operand 5 states. [2020-10-20 01:44:19,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:44:19,313 INFO L93 Difference]: Finished difference Result 745 states and 973 transitions. [2020-10-20 01:44:19,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 01:44:19,314 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2020-10-20 01:44:19,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:44:19,316 INFO L225 Difference]: With dead ends: 745 [2020-10-20 01:44:19,317 INFO L226 Difference]: Without dead ends: 423 [2020-10-20 01:44:19,318 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 01:44:19,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2020-10-20 01:44:19,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 328. [2020-10-20 01:44:19,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2020-10-20 01:44:19,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 421 transitions. [2020-10-20 01:44:19,347 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 421 transitions. Word has length 51 [2020-10-20 01:44:19,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:44:19,348 INFO L481 AbstractCegarLoop]: Abstraction has 328 states and 421 transitions. [2020-10-20 01:44:19,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:44:19,348 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 421 transitions. [2020-10-20 01:44:19,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-20 01:44:19,349 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:19,349 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 01:44:19,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-20 01:44:19,350 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:19,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:19,350 INFO L82 PathProgramCache]: Analyzing trace with hash 367437248, now seen corresponding path program 1 times [2020-10-20 01:44:19,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:19,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898384146] [2020-10-20 01:44:19,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:19,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:19,414 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-20 01:44:19,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898384146] [2020-10-20 01:44:19,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:44:19,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 01:44:19,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923430572] [2020-10-20 01:44:19,415 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 01:44:19,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:44:19,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 01:44:19,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 01:44:19,416 INFO L87 Difference]: Start difference. First operand 328 states and 421 transitions. Second operand 4 states. [2020-10-20 01:44:19,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:44:19,480 INFO L93 Difference]: Finished difference Result 668 states and 867 transitions. [2020-10-20 01:44:19,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 01:44:19,481 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-10-20 01:44:19,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:44:19,483 INFO L225 Difference]: With dead ends: 668 [2020-10-20 01:44:19,483 INFO L226 Difference]: Without dead ends: 346 [2020-10-20 01:44:19,484 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:44:19,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-10-20 01:44:19,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 262. [2020-10-20 01:44:19,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-10-20 01:44:19,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 335 transitions. [2020-10-20 01:44:19,507 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 335 transitions. Word has length 51 [2020-10-20 01:44:19,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:44:19,508 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 335 transitions. [2020-10-20 01:44:19,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 01:44:19,508 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 335 transitions. [2020-10-20 01:44:19,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-20 01:44:19,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:19,509 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:44:19,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-20 01:44:19,510 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:19,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:19,511 INFO L82 PathProgramCache]: Analyzing trace with hash -482312060, now seen corresponding path program 1 times [2020-10-20 01:44:19,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:19,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901780381] [2020-10-20 01:44:19,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:19,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:19,572 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-20 01:44:19,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901780381] [2020-10-20 01:44:19,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:44:19,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 01:44:19,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874580952] [2020-10-20 01:44:19,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:44:19,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:44:19,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:44:19,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:44:19,575 INFO L87 Difference]: Start difference. First operand 262 states and 335 transitions. Second operand 5 states. [2020-10-20 01:44:19,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:44:19,731 INFO L93 Difference]: Finished difference Result 678 states and 868 transitions. [2020-10-20 01:44:19,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 01:44:19,732 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-10-20 01:44:19,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:44:19,738 INFO L225 Difference]: With dead ends: 678 [2020-10-20 01:44:19,738 INFO L226 Difference]: Without dead ends: 676 [2020-10-20 01:44:19,739 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 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 01:44:19,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2020-10-20 01:44:19,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 262. [2020-10-20 01:44:19,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-10-20 01:44:19,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 333 transitions. [2020-10-20 01:44:19,768 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 333 transitions. Word has length 52 [2020-10-20 01:44:19,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:44:19,769 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 333 transitions. [2020-10-20 01:44:19,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:44:19,775 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 333 transitions. [2020-10-20 01:44:19,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-20 01:44:19,776 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:19,777 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:44:19,777 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-20 01:44:19,777 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:19,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:19,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1533505646, now seen corresponding path program 1 times [2020-10-20 01:44:19,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:19,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568612793] [2020-10-20 01:44:19,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:19,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:19,850 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:44:19,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568612793] [2020-10-20 01:44:19,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690052716] [2020-10-20 01:44:19,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:44:20,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:20,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 01:44:20,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 01:44:20,141 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:44:20,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 01:44:20,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2020-10-20 01:44:20,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183071805] [2020-10-20 01:44:20,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 01:44:20,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:44:20,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 01:44:20,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-20 01:44:20,144 INFO L87 Difference]: Start difference. First operand 262 states and 333 transitions. Second operand 6 states. [2020-10-20 01:44:20,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:44:20,427 INFO L93 Difference]: Finished difference Result 805 states and 1042 transitions. [2020-10-20 01:44:20,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 01:44:20,427 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 53 [2020-10-20 01:44:20,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:44:20,430 INFO L225 Difference]: With dead ends: 805 [2020-10-20 01:44:20,431 INFO L226 Difference]: Without dead ends: 597 [2020-10-20 01:44:20,432 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-10-20 01:44:20,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2020-10-20 01:44:20,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 366. [2020-10-20 01:44:20,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 366 states. [2020-10-20 01:44:20,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 471 transitions. [2020-10-20 01:44:20,483 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 471 transitions. Word has length 53 [2020-10-20 01:44:20,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:44:20,484 INFO L481 AbstractCegarLoop]: Abstraction has 366 states and 471 transitions. [2020-10-20 01:44:20,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 01:44:20,484 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 471 transitions. [2020-10-20 01:44:20,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-20 01:44:20,485 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:20,485 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 01:44:20,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-10-20 01:44:20,698 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:20,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:20,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1340997472, now seen corresponding path program 2 times [2020-10-20 01:44:20,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:20,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083764376] [2020-10-20 01:44:20,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:20,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 01:44:20,807 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 01:44:20,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 01:44:20,865 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 01:44:20,926 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 01:44:20,926 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 01:44:20,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-20 01:44:21,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 01:44:21 BoogieIcfgContainer [2020-10-20 01:44:21,085 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 01:44:21,086 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 01:44:21,086 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 01:44:21,088 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 01:44:21,088 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:44:16" (3/4) ... [2020-10-20 01:44:21,091 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 01:44:21,302 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 01:44:21,302 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 01:44:21,305 INFO L168 Benchmark]: Toolchain (without parser) took 6670.95 ms. Allocated memory was 43.0 MB in the beginning and 99.6 MB in the end (delta: 56.6 MB). Free memory was 22.3 MB in the beginning and 44.7 MB in the end (delta: -22.4 MB). Peak memory consumption was 59.3 MB. Max. memory is 14.3 GB. [2020-10-20 01:44:21,306 INFO L168 Benchmark]: CDTParser took 0.75 ms. Allocated memory is still 32.5 MB. Free memory was 11.6 MB in the beginning and 11.5 MB in the end (delta: 47.5 kB). Peak memory consumption was 47.5 kB. Max. memory is 14.3 GB. [2020-10-20 01:44:21,306 INFO L168 Benchmark]: CACSL2BoogieTranslator took 668.77 ms. Allocated memory was 43.0 MB in the beginning and 45.6 MB in the end (delta: 2.6 MB). Free memory was 21.5 MB in the beginning and 27.7 MB in the end (delta: -6.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 14.3 GB. [2020-10-20 01:44:21,306 INFO L168 Benchmark]: Boogie Procedure Inliner took 86.24 ms. Allocated memory is still 45.6 MB. Free memory was 27.7 MB in the beginning and 23.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 14.3 GB. [2020-10-20 01:44:21,307 INFO L168 Benchmark]: Boogie Preprocessor took 51.89 ms. Allocated memory is still 45.6 MB. Free memory was 23.5 MB in the beginning and 20.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 14.3 GB. [2020-10-20 01:44:21,307 INFO L168 Benchmark]: RCFGBuilder took 1081.67 ms. Allocated memory was 45.6 MB in the beginning and 50.9 MB in the end (delta: 5.2 MB). Free memory was 20.3 MB in the beginning and 31.2 MB in the end (delta: -10.8 MB). Peak memory consumption was 12.5 MB. Max. memory is 14.3 GB. [2020-10-20 01:44:21,308 INFO L168 Benchmark]: TraceAbstraction took 4554.60 ms. Allocated memory was 50.9 MB in the beginning and 96.5 MB in the end (delta: 45.6 MB). Free memory was 30.8 MB in the beginning and 16.5 MB in the end (delta: 14.3 MB). Peak memory consumption was 59.9 MB. Max. memory is 14.3 GB. [2020-10-20 01:44:21,308 INFO L168 Benchmark]: Witness Printer took 216.67 ms. Allocated memory was 96.5 MB in the beginning and 99.6 MB in the end (delta: 3.1 MB). Free memory was 16.5 MB in the beginning and 44.7 MB in the end (delta: -28.2 MB). Peak memory consumption was 8.2 kB. Max. memory is 14.3 GB. [2020-10-20 01:44:21,311 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.75 ms. Allocated memory is still 32.5 MB. Free memory was 11.6 MB in the beginning and 11.5 MB in the end (delta: 47.5 kB). Peak memory consumption was 47.5 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 668.77 ms. Allocated memory was 43.0 MB in the beginning and 45.6 MB in the end (delta: 2.6 MB). Free memory was 21.5 MB in the beginning and 27.7 MB in the end (delta: -6.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 86.24 ms. Allocated memory is still 45.6 MB. Free memory was 27.7 MB in the beginning and 23.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 51.89 ms. Allocated memory is still 45.6 MB. Free memory was 23.5 MB in the beginning and 20.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 14.3 GB. * RCFGBuilder took 1081.67 ms. Allocated memory was 45.6 MB in the beginning and 50.9 MB in the end (delta: 5.2 MB). Free memory was 20.3 MB in the beginning and 31.2 MB in the end (delta: -10.8 MB). Peak memory consumption was 12.5 MB. Max. memory is 14.3 GB. * TraceAbstraction took 4554.60 ms. Allocated memory was 50.9 MB in the beginning and 96.5 MB in the end (delta: 45.6 MB). Free memory was 30.8 MB in the beginning and 16.5 MB in the end (delta: 14.3 MB). Peak memory consumption was 59.9 MB. Max. memory is 14.3 GB. * Witness Printer took 216.67 ms. Allocated memory was 96.5 MB in the beginning and 99.6 MB in the end (delta: 3.1 MB). Free memory was 16.5 MB in the beginning and 44.7 MB in the end (delta: -28.2 MB). Peak memory consumption was 8.2 kB. 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: [L119] int pumpRunning = 0; [L120] int systemActive = 1; [L493] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L717] int cleanupTimeShifts = 4; [L816] int waterLevel = 1; [L817] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L793] int retValue_acc ; [L794] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L936] int retValue_acc ; [L939] retValue_acc = 1 [L940] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L800] tmp = valid_product() [L802] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L47] int splverifierCounter ; [L48] int tmp ; [L49] int tmp___0 ; [L50] int tmp___1 ; [L51] int tmp___2 ; [L54] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L56] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L58] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L64] tmp = __VERIFIER_nondet_int() [L66] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L834] COND TRUE waterLevel < 2 [L835] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L74] tmp___0 = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L84] tmp___2 = __VERIFIER_nondet_int() [L86] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L127] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L134] COND TRUE \read(systemActive) [L182] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L185] COND FALSE !(\read(pumpRunning)) [L156] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L159] COND TRUE ! pumpRunning [L296] int retValue_acc ; [L297] int tmp ; [L298] int tmp___0 ; [L896] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L899] COND FALSE !(waterLevel < 2) [L903] retValue_acc = 0 [L904] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L302] tmp = isHighWaterSensorDry() [L304] COND FALSE !(\read(tmp)) [L307] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L309] retValue_acc = tmp___0 [L310] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L161] tmp = isHighWaterLevel() [L163] COND TRUE \read(tmp) [L215] int tmp ; [L240] int retValue_acc ; [L855] int retValue_acc ; [L858] retValue_acc = methaneLevelCritical [L859] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L244] retValue_acc = isMethaneLevelCritical() [L246] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L219] tmp = isMethaneAlarm() [L221] COND FALSE !(\read(tmp)) [L210] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L692] int tmp ; [L693] int tmp___0 ; [L887] int retValue_acc ; [L890] retValue_acc = waterLevel [L891] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L697] tmp = getWaterLevel() [L699] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L56] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L58] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L64] tmp = __VERIFIER_nondet_int() [L66] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L74] tmp___0 = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L84] tmp___2 = __VERIFIER_nondet_int() [L86] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L127] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L822] COND TRUE waterLevel > 0 [L823] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L134] COND TRUE \read(systemActive) [L182] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L185] COND TRUE \read(pumpRunning) [L240] int retValue_acc ; [L855] int retValue_acc ; [L858] retValue_acc = methaneLevelCritical [L859] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L244] retValue_acc = isMethaneLevelCritical() [L246] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L187] tmp = isMethaneAlarm() [L189] COND FALSE !(\read(tmp)) [L156] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L159] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L692] int tmp ; [L693] int tmp___0 ; [L887] int retValue_acc ; [L890] retValue_acc = waterLevel [L891] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L697] tmp = getWaterLevel() [L699] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L56] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L58] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L64] tmp = __VERIFIER_nondet_int() [L66] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L74] tmp___0 = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L84] tmp___2 = __VERIFIER_nondet_int() [L86] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L127] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L822] COND TRUE waterLevel > 0 [L823] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L134] COND TRUE \read(systemActive) [L182] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L185] COND TRUE \read(pumpRunning) [L240] int retValue_acc ; [L855] int retValue_acc ; [L858] retValue_acc = methaneLevelCritical [L859] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L244] retValue_acc = isMethaneLevelCritical() [L246] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L187] tmp = isMethaneAlarm() [L189] COND FALSE !(\read(tmp)) [L156] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L159] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L692] int tmp ; [L693] int tmp___0 ; [L887] int retValue_acc ; [L890] retValue_acc = waterLevel [L891] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L697] tmp = getWaterLevel() [L699] COND TRUE tmp == 0 [L251] int retValue_acc ; [L254] retValue_acc = pumpRunning [L255] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L701] tmp___0 = isPumpRunning() [L703] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L3] __assert_fail("0", "minepump_spec4_product45.cil.c", 3, "reach_error") VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 132 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.3s, OverallIterations: 15, TraceHistogramMax: 3, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1590 SDtfs, 2103 SDslu, 2472 SDs, 0 SdLazy, 372 SolverSat, 79 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 152 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=366occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 14 MinimizatonAttempts, 1827 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 602 NumberOfCodeBlocks, 602 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 515 ConstructedInterpolants, 0 QuantifiedInterpolants, 35411 SizeOfPredicates, 4 NumberOfNonLiveVariables, 432 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 15 InterpolantComputations, 13 PerfectInterpolantSequences, 64/70 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...