./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-acceleration/underapprox_2-1.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/loop-acceleration/underapprox_2-1.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 2879b5362dad4ee344e02d12e11f7b45d4f36399 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 00:58:37,617 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:58:37,620 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:58:37,658 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:58:37,658 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:58:37,667 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:58:37,670 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:58:37,673 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:58:37,675 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:58:37,678 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:58:37,680 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:58:37,681 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:58:37,681 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:58:37,685 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:58:37,686 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:58:37,688 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:58:37,689 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:58:37,690 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:58:37,692 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:58:37,699 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:58:37,701 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:58:37,702 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:58:37,704 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:58:37,705 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:58:37,716 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:58:37,717 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:58:37,717 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:58:37,718 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:58:37,720 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:58:37,721 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:58:37,721 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:58:37,722 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:58:37,722 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:58:37,723 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:58:37,725 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:58:37,725 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:58:37,726 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:58:37,726 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:58:37,727 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:58:37,727 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:58:37,729 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:58:37,729 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 00:58:37,765 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:58:37,765 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:58:37,766 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:58:37,766 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:58:37,766 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:58:37,767 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:58:37,767 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:58:37,767 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 00:58:37,767 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:58:37,767 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:58:37,767 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:58:37,768 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:58:37,768 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:58:37,768 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:58:37,768 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:58:37,768 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:58:37,768 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:58:37,769 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:58:37,769 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:58:37,769 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:58:37,769 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:58:37,769 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:58:37,770 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:58:37,770 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:58:37,770 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:58:37,770 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 00:58:37,770 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 00:58:37,770 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:58:37,771 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:58:37,771 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 -> 2879b5362dad4ee344e02d12e11f7b45d4f36399 [2020-10-20 00:58:37,961 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:58:37,973 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:58:37,976 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:58:37,978 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:58:37,979 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:58:37,979 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-acceleration/underapprox_2-1.c [2020-10-20 00:58:38,037 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/674e52f30/137d1607a51c4f799262ec788627fb4f/FLAG2446f9c20 [2020-10-20 00:58:38,491 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:58:38,492 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-acceleration/underapprox_2-1.c [2020-10-20 00:58:38,498 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/674e52f30/137d1607a51c4f799262ec788627fb4f/FLAG2446f9c20 [2020-10-20 00:58:38,905 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/674e52f30/137d1607a51c4f799262ec788627fb4f [2020-10-20 00:58:38,908 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:58:38,915 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:58:38,916 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:58:38,916 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:58:38,919 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:58:38,920 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:58:38" (1/1) ... [2020-10-20 00:58:38,923 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b06922a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:58:38, skipping insertion in model container [2020-10-20 00:58:38,923 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:58:38" (1/1) ... [2020-10-20 00:58:38,931 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:58:38,946 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:58:39,125 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:58:39,135 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:58:39,151 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:58:39,176 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:58:39,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:58:39 WrapperNode [2020-10-20 00:58:39,177 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:58:39,178 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:58:39,178 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:58:39,178 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:58:39,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:58:39" (1/1) ... [2020-10-20 00:58:39,195 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:58:39" (1/1) ... [2020-10-20 00:58:39,214 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:58:39,215 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:58:39,215 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:58:39,215 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:58:39,225 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:58:39" (1/1) ... [2020-10-20 00:58:39,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:58:39" (1/1) ... [2020-10-20 00:58:39,226 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:58:39" (1/1) ... [2020-10-20 00:58:39,226 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:58:39" (1/1) ... [2020-10-20 00:58:39,230 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:58:39" (1/1) ... [2020-10-20 00:58:39,233 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:58:39" (1/1) ... [2020-10-20 00:58:39,234 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:58:39" (1/1) ... [2020-10-20 00:58:39,236 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:58:39,236 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:58:39,237 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:58:39,237 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:58:39,237 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:58:39" (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 00:58:39,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:58:39,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:58:39,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 00:58:39,306 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:58:39,487 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:58:39,488 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-20 00:58:39,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:58:39 BoogieIcfgContainer [2020-10-20 00:58:39,489 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:58:39,490 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:58:39,491 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:58:39,494 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:58:39,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:58:38" (1/3) ... [2020-10-20 00:58:39,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d22ecad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:58:39, skipping insertion in model container [2020-10-20 00:58:39,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:58:39" (2/3) ... [2020-10-20 00:58:39,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d22ecad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:58:39, skipping insertion in model container [2020-10-20 00:58:39,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:58:39" (3/3) ... [2020-10-20 00:58:39,497 INFO L111 eAbstractionObserver]: Analyzing ICFG underapprox_2-1.c [2020-10-20 00:58:39,509 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:58:39,516 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:58:39,562 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:58:39,623 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:58:39,623 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:58:39,623 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:58:39,623 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:58:39,624 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:58:39,624 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:58:39,624 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:58:39,624 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:58:39,651 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-10-20 00:58:39,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-20 00:58:39,657 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:58:39,659 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-20 00:58:39,659 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:58:39,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:58:39,667 INFO L82 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2020-10-20 00:58:39,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:58:39,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421214795] [2020-10-20 00:58:39,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:58:39,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:58:39,869 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 00:58:39,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421214795] [2020-10-20 00:58:39,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:58:39,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 00:58:39,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302928752] [2020-10-20 00:58:39,876 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 00:58:39,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:58:39,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 00:58:39,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 00:58:39,892 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 4 states. [2020-10-20 00:58:39,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:58:39,933 INFO L93 Difference]: Finished difference Result 19 states and 23 transitions. [2020-10-20 00:58:39,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 00:58:39,935 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-10-20 00:58:39,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:58:39,945 INFO L225 Difference]: With dead ends: 19 [2020-10-20 00:58:39,945 INFO L226 Difference]: Without dead ends: 8 [2020-10-20 00:58:39,948 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 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 00:58:39,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-10-20 00:58:39,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-10-20 00:58:39,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-20 00:58:39,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2020-10-20 00:58:39,990 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2020-10-20 00:58:39,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:58:39,990 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2020-10-20 00:58:39,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 00:58:39,990 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2020-10-20 00:58:39,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-20 00:58:39,991 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:58:39,991 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:58:39,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 00:58:39,992 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:58:39,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:58:39,992 INFO L82 PathProgramCache]: Analyzing trace with hash 1810510480, now seen corresponding path program 1 times [2020-10-20 00:58:39,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:58:39,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956816616] [2020-10-20 00:58:39,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:58:40,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:58:40,101 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:58:40,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956816616] [2020-10-20 00:58:40,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855144654] [2020-10-20 00:58:40,102 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 00:58:40,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:58:40,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 00:58:40,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:58:40,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:58:40,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 00:58:40,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2020-10-20 00:58:40,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970793704] [2020-10-20 00:58:40,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 00:58:40,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:58:40,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 00:58:40,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-20 00:58:40,217 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 6 states. [2020-10-20 00:58:40,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:58:40,246 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2020-10-20 00:58:40,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 00:58:40,247 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2020-10-20 00:58:40,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:58:40,248 INFO L225 Difference]: With dead ends: 13 [2020-10-20 00:58:40,248 INFO L226 Difference]: Without dead ends: 9 [2020-10-20 00:58:40,249 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-20 00:58:40,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-10-20 00:58:40,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-10-20 00:58:40,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-20 00:58:40,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-10-20 00:58:40,252 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2020-10-20 00:58:40,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:58:40,252 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-10-20 00:58:40,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 00:58:40,252 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-10-20 00:58:40,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 00:58:40,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:58:40,263 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-10-20 00:58:40,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-10-20 00:58:40,473 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:58:40,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:58:40,474 INFO L82 PathProgramCache]: Analyzing trace with hash 292915403, now seen corresponding path program 2 times [2020-10-20 00:58:40,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:58:40,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047306824] [2020-10-20 00:58:40,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:58:40,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:58:40,586 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:58:40,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047306824] [2020-10-20 00:58:40,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339324217] [2020-10-20 00:58:40,587 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 00:58:40,630 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 00:58:40,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 00:58:40,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 00:58:40,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:58:40,688 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:58:40,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 00:58:40,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2020-10-20 00:58:40,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090567576] [2020-10-20 00:58:40,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 00:58:40,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:58:40,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 00:58:40,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-20 00:58:40,691 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 7 states. [2020-10-20 00:58:40,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:58:40,724 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2020-10-20 00:58:40,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 00:58:40,724 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 8 [2020-10-20 00:58:40,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:58:40,725 INFO L225 Difference]: With dead ends: 14 [2020-10-20 00:58:40,725 INFO L226 Difference]: Without dead ends: 10 [2020-10-20 00:58:40,726 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-20 00:58:40,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-10-20 00:58:40,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-10-20 00:58:40,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-20 00:58:40,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2020-10-20 00:58:40,737 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2020-10-20 00:58:40,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:58:40,738 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2020-10-20 00:58:40,738 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 00:58:40,738 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2020-10-20 00:58:40,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 00:58:40,738 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:58:40,738 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2020-10-20 00:58:40,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 00:58:40,949 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:58:40,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:58:40,949 INFO L82 PathProgramCache]: Analyzing trace with hash 492108272, now seen corresponding path program 3 times [2020-10-20 00:58:40,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:58:40,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749106641] [2020-10-20 00:58:40,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:58:40,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:58:41,055 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:58:41,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749106641] [2020-10-20 00:58:41,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128162367] [2020-10-20 00:58:41,056 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 00:58:41,096 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-20 00:58:41,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 00:58:41,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-20 00:58:41,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:58:41,135 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:58:41,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 00:58:41,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2020-10-20 00:58:41,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974210992] [2020-10-20 00:58:41,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 00:58:41,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:58:41,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 00:58:41,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-20 00:58:41,138 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 8 states. [2020-10-20 00:58:41,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:58:41,191 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2020-10-20 00:58:41,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 00:58:41,192 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 9 [2020-10-20 00:58:41,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:58:41,193 INFO L225 Difference]: With dead ends: 15 [2020-10-20 00:58:41,193 INFO L226 Difference]: Without dead ends: 11 [2020-10-20 00:58:41,194 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-20 00:58:41,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-10-20 00:58:41,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-10-20 00:58:41,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-20 00:58:41,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2020-10-20 00:58:41,199 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2020-10-20 00:58:41,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:58:41,200 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2020-10-20 00:58:41,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 00:58:41,200 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-10-20 00:58:41,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 00:58:41,200 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:58:41,202 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2020-10-20 00:58:41,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 00:58:41,412 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:58:41,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:58:41,412 INFO L82 PathProgramCache]: Analyzing trace with hash -1922847381, now seen corresponding path program 4 times [2020-10-20 00:58:41,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:58:41,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308099377] [2020-10-20 00:58:41,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:58:41,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:58:41,579 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:58:41,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308099377] [2020-10-20 00:58:41,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208035832] [2020-10-20 00:58:41,581 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 00:58:41,623 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-20 00:58:41,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 00:58:41,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-20 00:58:41,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:58:41,681 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:58:41,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 00:58:41,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 9 [2020-10-20 00:58:41,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648125123] [2020-10-20 00:58:41,682 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-20 00:58:41,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:58:41,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-20 00:58:41,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-20 00:58:41,685 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 9 states. [2020-10-20 00:58:41,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:58:41,741 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2020-10-20 00:58:41,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 00:58:41,742 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 10 [2020-10-20 00:58:41,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:58:41,743 INFO L225 Difference]: With dead ends: 16 [2020-10-20 00:58:41,743 INFO L226 Difference]: Without dead ends: 12 [2020-10-20 00:58:41,744 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-20 00:58:41,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-10-20 00:58:41,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-10-20 00:58:41,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-20 00:58:41,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-10-20 00:58:41,750 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2020-10-20 00:58:41,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:58:41,751 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-10-20 00:58:41,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-20 00:58:41,752 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-10-20 00:58:41,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 00:58:41,752 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:58:41,752 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1] [2020-10-20 00:58:41,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 00:58:41,954 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:58:41,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:58:41,955 INFO L82 PathProgramCache]: Analyzing trace with hash 522938704, now seen corresponding path program 5 times [2020-10-20 00:58:41,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:58:41,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104605311] [2020-10-20 00:58:41,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:58:41,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:58:42,056 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:58:42,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104605311] [2020-10-20 00:58:42,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190804677] [2020-10-20 00:58:42,057 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 00:58:42,118 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-10-20 00:58:42,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 00:58:42,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-20 00:58:42,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:58:42,160 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:58:42,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 00:58:42,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 10 [2020-10-20 00:58:42,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306587081] [2020-10-20 00:58:42,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-20 00:58:42,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:58:42,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-20 00:58:42,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-20 00:58:42,162 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 10 states. [2020-10-20 00:58:42,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:58:42,215 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2020-10-20 00:58:42,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 00:58:42,216 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 11 [2020-10-20 00:58:42,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:58:42,216 INFO L225 Difference]: With dead ends: 17 [2020-10-20 00:58:42,216 INFO L226 Difference]: Without dead ends: 13 [2020-10-20 00:58:42,217 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-20 00:58:42,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-10-20 00:58:42,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-10-20 00:58:42,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-20 00:58:42,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-10-20 00:58:42,221 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2020-10-20 00:58:42,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:58:42,221 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-10-20 00:58:42,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-20 00:58:42,221 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-10-20 00:58:42,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 00:58:42,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:58:42,222 INFO L422 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1] [2020-10-20 00:58:42,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-10-20 00:58:42,431 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:58:42,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:58:42,432 INFO L82 PathProgramCache]: Analyzing trace with hash -967103989, now seen corresponding path program 6 times [2020-10-20 00:58:42,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:58:42,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180867368] [2020-10-20 00:58:42,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:58:42,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:58:42,451 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:58:42,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:58:42,466 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:58:42,483 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 00:58:42,484 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:58:42,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-20 00:58:42,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:58:42 BoogieIcfgContainer [2020-10-20 00:58:42,511 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:58:42,512 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:58:42,512 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:58:42,512 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:58:42,513 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:58:39" (3/4) ... [2020-10-20 00:58:42,515 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 00:58:42,573 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 00:58:42,574 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:58:42,577 INFO L168 Benchmark]: Toolchain (without parser) took 3665.78 ms. Allocated memory was 43.0 MB in the beginning and 53.5 MB in the end (delta: 10.5 MB). Free memory was 23.7 MB in the beginning and 12.1 MB in the end (delta: 11.6 MB). Peak memory consumption was 22.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:58:42,578 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 32.5 MB. Free memory was 11.1 MB in the beginning and 11.0 MB in the end (delta: 3.1 kB). Peak memory consumption was 3.1 kB. Max. memory is 14.3 GB. [2020-10-20 00:58:42,581 INFO L168 Benchmark]: CACSL2BoogieTranslator took 261.81 ms. Allocated memory was 43.0 MB in the beginning and 43.5 MB in the end (delta: 524.3 kB). Free memory was 22.8 MB in the beginning and 25.7 MB in the end (delta: -2.9 MB). Peak memory consumption was 14.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:58:42,583 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.44 ms. Allocated memory is still 43.5 MB. Free memory was 25.7 MB in the beginning and 24.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-20 00:58:42,583 INFO L168 Benchmark]: Boogie Preprocessor took 21.56 ms. Allocated memory is still 43.5 MB. Free memory was 24.1 MB in the beginning and 22.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 14.3 GB. [2020-10-20 00:58:42,584 INFO L168 Benchmark]: RCFGBuilder took 252.95 ms. Allocated memory is still 43.5 MB. Free memory was 22.9 MB in the beginning and 11.7 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:58:42,585 INFO L168 Benchmark]: TraceAbstraction took 3021.15 ms. Allocated memory was 43.5 MB in the beginning and 53.5 MB in the end (delta: 10.0 MB). Free memory was 11.2 MB in the beginning and 14.7 MB in the end (delta: -3.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 14.3 GB. [2020-10-20 00:58:42,590 INFO L168 Benchmark]: Witness Printer took 61.78 ms. Allocated memory is still 53.5 MB. Free memory was 14.7 MB in the beginning and 12.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 14.3 GB. [2020-10-20 00:58:42,592 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 32.5 MB. Free memory was 11.1 MB in the beginning and 11.0 MB in the end (delta: 3.1 kB). Peak memory consumption was 3.1 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 261.81 ms. Allocated memory was 43.0 MB in the beginning and 43.5 MB in the end (delta: 524.3 kB). Free memory was 22.8 MB in the beginning and 25.7 MB in the end (delta: -2.9 MB). Peak memory consumption was 14.0 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 36.44 ms. Allocated memory is still 43.5 MB. Free memory was 25.7 MB in the beginning and 24.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 21.56 ms. Allocated memory is still 43.5 MB. Free memory was 24.1 MB in the beginning and 22.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 14.3 GB. * RCFGBuilder took 252.95 ms. Allocated memory is still 43.5 MB. Free memory was 22.9 MB in the beginning and 11.7 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 14.3 GB. * TraceAbstraction took 3021.15 ms. Allocated memory was 43.5 MB in the beginning and 53.5 MB in the end (delta: 10.0 MB). Free memory was 11.2 MB in the beginning and 14.7 MB in the end (delta: -3.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 14.3 GB. * Witness Printer took 61.78 ms. Allocated memory is still 53.5 MB. Free memory was 14.7 MB in the beginning and 12.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L13] unsigned int x = 0; [L14] unsigned int y = 1; [L16] COND TRUE x < 6 [L17] x++ [L18] y *= 2 [L16] COND TRUE x < 6 [L17] x++ [L18] y *= 2 [L16] COND TRUE x < 6 [L17] x++ [L18] y *= 2 [L16] COND TRUE x < 6 [L17] x++ [L18] y *= 2 [L16] COND TRUE x < 6 [L17] x++ [L18] y *= 2 [L16] COND TRUE x < 6 [L17] x++ [L18] y *= 2 [L16] COND FALSE !(x < 6) [L6] COND TRUE !(cond) [L3] __assert_fail("0", "underapprox_2-1.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.8s, OverallIterations: 7, TraceHistogramMax: 6, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 39 SDtfs, 2 SDslu, 102 SDs, 0 SdLazy, 199 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 85 GetRequests, 43 SyntacticMatches, 10 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 108 NumberOfCodeBlocks, 108 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 85 ConstructedInterpolants, 0 QuantifiedInterpolants, 2686 SizeOfPredicates, 5 NumberOfNonLiveVariables, 290 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 11 InterpolantComputations, 1 PerfectInterpolantSequences, 0/70 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...