./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive/Fibonacci04.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive/Fibonacci04.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 db54bc93f5615de8b0a803193005d14234c84165 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-25 23:09:12,994 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 23:09:12,997 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 23:09:13,032 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 23:09:13,033 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 23:09:13,034 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 23:09:13,036 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 23:09:13,038 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 23:09:13,041 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 23:09:13,042 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 23:09:13,043 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 23:09:13,045 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 23:09:13,045 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 23:09:13,047 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 23:09:13,048 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 23:09:13,050 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 23:09:13,051 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 23:09:13,052 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 23:09:13,055 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 23:09:13,060 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 23:09:13,065 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 23:09:13,071 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 23:09:13,074 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 23:09:13,076 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 23:09:13,083 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 23:09:13,084 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 23:09:13,085 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 23:09:13,088 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 23:09:13,091 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 23:09:13,093 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 23:09:13,093 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 23:09:13,094 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 23:09:13,096 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 23:09:13,100 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 23:09:13,103 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 23:09:13,103 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 23:09:13,104 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 23:09:13,104 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 23:09:13,105 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 23:09:13,107 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 23:09:13,108 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 23:09:13,110 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 23:09:13,174 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 23:09:13,174 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 23:09:13,177 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 23:09:13,178 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 23:09:13,178 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 23:09:13,178 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 23:09:13,178 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 23:09:13,179 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 23:09:13,179 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 23:09:13,179 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 23:09:13,180 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 23:09:13,181 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 23:09:13,181 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 23:09:13,181 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 23:09:13,182 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 23:09:13,182 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 23:09:13,182 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 23:09:13,182 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 23:09:13,183 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 23:09:13,183 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 23:09:13,183 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 23:09:13,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 23:09:13,184 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 23:09:13,184 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 23:09:13,184 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 23:09:13,185 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 23:09:13,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 23:09:13,185 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 23:09:13,185 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 23:09:13,186 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> db54bc93f5615de8b0a803193005d14234c84165 [2020-10-25 23:09:13,661 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 23:09:13,697 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 23:09:13,703 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 23:09:13,705 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 23:09:13,706 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 23:09:13,707 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/Fibonacci04.c [2020-10-25 23:09:13,798 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f19597872/38afdfef0b1f42bbb01f603ef2a86268/FLAG77a89b109 [2020-10-25 23:09:14,467 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 23:09:14,468 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/Fibonacci04.c [2020-10-25 23:09:14,476 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f19597872/38afdfef0b1f42bbb01f603ef2a86268/FLAG77a89b109 [2020-10-25 23:09:14,847 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f19597872/38afdfef0b1f42bbb01f603ef2a86268 [2020-10-25 23:09:14,850 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 23:09:14,858 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 23:09:14,860 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 23:09:14,861 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 23:09:14,868 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 23:09:14,869 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 11:09:14" (1/1) ... [2020-10-25 23:09:14,873 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cb1f21c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:09:14, skipping insertion in model container [2020-10-25 23:09:14,874 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 11:09:14" (1/1) ... [2020-10-25 23:09:14,884 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 23:09:14,904 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 23:09:15,106 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 23:09:15,118 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 23:09:15,137 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 23:09:15,156 INFO L208 MainTranslator]: Completed translation [2020-10-25 23:09:15,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:09:15 WrapperNode [2020-10-25 23:09:15,157 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 23:09:15,159 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 23:09:15,159 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 23:09:15,160 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 23:09:15,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:09:15" (1/1) ... [2020-10-25 23:09:15,179 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:09:15" (1/1) ... [2020-10-25 23:09:15,200 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 23:09:15,201 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 23:09:15,202 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 23:09:15,202 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 23:09:15,212 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:09:15" (1/1) ... [2020-10-25 23:09:15,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:09:15" (1/1) ... [2020-10-25 23:09:15,215 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:09:15" (1/1) ... [2020-10-25 23:09:15,215 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:09:15" (1/1) ... [2020-10-25 23:09:15,219 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:09:15" (1/1) ... [2020-10-25 23:09:15,221 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:09:15" (1/1) ... [2020-10-25 23:09:15,223 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:09:15" (1/1) ... [2020-10-25 23:09:15,225 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 23:09:15,226 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 23:09:15,226 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 23:09:15,226 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 23:09:15,228 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:09:15" (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 [2020-10-25 23:09:15,322 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2020-10-25 23:09:15,322 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2020-10-25 23:09:15,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 23:09:15,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 23:09:15,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 23:09:15,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 23:09:15,593 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 23:09:15,593 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-25 23:09:15,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 11:09:15 BoogieIcfgContainer [2020-10-25 23:09:15,596 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 23:09:15,598 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 23:09:15,598 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 23:09:15,602 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 23:09:15,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 11:09:14" (1/3) ... [2020-10-25 23:09:15,603 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72a1e4a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 11:09:15, skipping insertion in model container [2020-10-25 23:09:15,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:09:15" (2/3) ... [2020-10-25 23:09:15,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72a1e4a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 11:09:15, skipping insertion in model container [2020-10-25 23:09:15,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 11:09:15" (3/3) ... [2020-10-25 23:09:15,606 INFO L111 eAbstractionObserver]: Analyzing ICFG Fibonacci04.c [2020-10-25 23:09:15,621 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 23:09:15,627 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 23:09:15,643 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 23:09:15,677 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 23:09:15,677 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 23:09:15,677 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 23:09:15,677 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 23:09:15,678 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 23:09:15,678 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 23:09:15,678 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 23:09:15,678 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 23:09:15,697 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-10-25 23:09:15,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-25 23:09:15,703 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:09:15,704 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 23:09:15,705 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:09:15,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:09:15,713 INFO L82 PathProgramCache]: Analyzing trace with hash -691997320, now seen corresponding path program 1 times [2020-10-25 23:09:15,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:09:15,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140905297] [2020-10-25 23:09:15,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:09:15,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:09:15,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-25 23:09:15,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:09:16,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 23:09:16,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140905297] [2020-10-25 23:09:16,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 23:09:16,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-25 23:09:16,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293470219] [2020-10-25 23:09:16,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-25 23:09:16,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:09:16,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-25 23:09:16,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-25 23:09:16,029 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 5 states. [2020-10-25 23:09:16,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:09:16,255 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2020-10-25 23:09:16,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-25 23:09:16,259 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-25 23:09:16,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:09:16,269 INFO L225 Difference]: With dead ends: 32 [2020-10-25 23:09:16,270 INFO L226 Difference]: Without dead ends: 18 [2020-10-25 23:09:16,274 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-25 23:09:16,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-10-25 23:09:16,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-10-25 23:09:16,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-25 23:09:16,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2020-10-25 23:09:16,324 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 10 [2020-10-25 23:09:16,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:09:16,325 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2020-10-25 23:09:16,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-25 23:09:16,325 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2020-10-25 23:09:16,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-25 23:09:16,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:09:16,328 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 23:09:16,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 23:09:16,329 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:09:16,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:09:16,330 INFO L82 PathProgramCache]: Analyzing trace with hash 717045018, now seen corresponding path program 1 times [2020-10-25 23:09:16,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:09:16,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553006323] [2020-10-25 23:09:16,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:09:16,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:09:16,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-25 23:09:16,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:09:16,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 23:09:16,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553006323] [2020-10-25 23:09:16,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 23:09:16,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-25 23:09:16,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811532363] [2020-10-25 23:09:16,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-25 23:09:16,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:09:16,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-25 23:09:16,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-25 23:09:16,488 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand 5 states. [2020-10-25 23:09:16,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:09:16,643 INFO L93 Difference]: Finished difference Result 24 states and 29 transitions. [2020-10-25 23:09:16,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-25 23:09:16,646 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-25 23:09:16,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:09:16,647 INFO L225 Difference]: With dead ends: 24 [2020-10-25 23:09:16,647 INFO L226 Difference]: Without dead ends: 20 [2020-10-25 23:09:16,650 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-25 23:09:16,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-10-25 23:09:16,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2020-10-25 23:09:16,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-25 23:09:16,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2020-10-25 23:09:16,662 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 11 [2020-10-25 23:09:16,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:09:16,663 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2020-10-25 23:09:16,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-25 23:09:16,664 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2020-10-25 23:09:16,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-25 23:09:16,666 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:09:16,667 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 23:09:16,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-25 23:09:16,668 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:09:16,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:09:16,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1426922965, now seen corresponding path program 1 times [2020-10-25 23:09:16,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:09:16,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35109391] [2020-10-25 23:09:16,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:09:16,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:09:16,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-25 23:09:16,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:09:16,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-25 23:09:16,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:09:16,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-25 23:09:16,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:09:16,866 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-25 23:09:16,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35109391] [2020-10-25 23:09:16,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755325603] [2020-10-25 23:09:16,867 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 [2020-10-25 23:09:16,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:09:16,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-25 23:09:16,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 23:09:17,086 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-25 23:09:17,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-25 23:09:17,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2020-10-25 23:09:17,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573849338] [2020-10-25 23:09:17,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-25 23:09:17,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:09:17,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-25 23:09:17,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-25 23:09:17,089 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand 9 states. [2020-10-25 23:09:17,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:09:17,259 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2020-10-25 23:09:17,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-25 23:09:17,260 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-10-25 23:09:17,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:09:17,262 INFO L225 Difference]: With dead ends: 35 [2020-10-25 23:09:17,262 INFO L226 Difference]: Without dead ends: 20 [2020-10-25 23:09:17,263 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-10-25 23:09:17,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-10-25 23:09:17,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-10-25 23:09:17,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-25 23:09:17,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2020-10-25 23:09:17,272 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 23 [2020-10-25 23:09:17,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:09:17,273 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2020-10-25 23:09:17,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-25 23:09:17,273 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2020-10-25 23:09:17,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-25 23:09:17,275 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:09:17,275 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 23:09:17,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-25 23:09:17,489 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:09:17,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:09:17,490 INFO L82 PathProgramCache]: Analyzing trace with hash 301752507, now seen corresponding path program 1 times [2020-10-25 23:09:17,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:09:17,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515988829] [2020-10-25 23:09:17,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:09:17,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:09:17,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-25 23:09:17,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:09:17,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-25 23:09:17,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:09:17,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-25 23:09:17,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:09:17,614 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-25 23:09:17,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515988829] [2020-10-25 23:09:17,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972210404] [2020-10-25 23:09:17,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-10-25 23:09:17,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:09:17,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-25 23:09:17,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 23:09:17,736 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-25 23:09:17,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-25 23:09:17,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-10-25 23:09:17,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234106682] [2020-10-25 23:09:17,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-25 23:09:17,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:09:17,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-25 23:09:17,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-25 23:09:17,740 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand 8 states. [2020-10-25 23:09:17,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:09:17,861 INFO L93 Difference]: Finished difference Result 38 states and 52 transitions. [2020-10-25 23:09:17,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-25 23:09:17,862 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2020-10-25 23:09:17,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:09:17,864 INFO L225 Difference]: With dead ends: 38 [2020-10-25 23:09:17,865 INFO L226 Difference]: Without dead ends: 34 [2020-10-25 23:09:17,865 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-25 23:09:17,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-25 23:09:17,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-10-25 23:09:17,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-25 23:09:17,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 48 transitions. [2020-10-25 23:09:17,877 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 48 transitions. Word has length 24 [2020-10-25 23:09:17,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:09:17,877 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 48 transitions. [2020-10-25 23:09:17,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-25 23:09:17,878 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 48 transitions. [2020-10-25 23:09:17,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-25 23:09:17,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:09:17,880 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 23:09:18,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 23:09:18,095 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:09:18,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:09:18,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1093063438, now seen corresponding path program 2 times [2020-10-25 23:09:18,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:09:18,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882751637] [2020-10-25 23:09:18,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:09:18,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:09:18,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-25 23:09:18,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:09:18,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-25 23:09:18,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:09:18,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-25 23:09:18,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:09:18,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-25 23:09:18,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:09:18,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-25 23:09:18,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:09:18,302 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-25 23:09:18,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882751637] [2020-10-25 23:09:18,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342487923] [2020-10-25 23:09:18,303 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 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 [2020-10-25 23:09:18,407 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-25 23:09:18,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-25 23:09:18,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-25 23:09:18,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 23:09:18,523 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-25 23:09:18,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-25 23:09:18,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2020-10-25 23:09:18,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762628165] [2020-10-25 23:09:18,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-25 23:09:18,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:09:18,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-25 23:09:18,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-25 23:09:18,526 INFO L87 Difference]: Start difference. First operand 34 states and 48 transitions. Second operand 12 states. [2020-10-25 23:09:18,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:09:18,831 INFO L93 Difference]: Finished difference Result 68 states and 103 transitions. [2020-10-25 23:09:18,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-25 23:09:18,832 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 37 [2020-10-25 23:09:18,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:09:18,834 INFO L225 Difference]: With dead ends: 68 [2020-10-25 23:09:18,834 INFO L226 Difference]: Without dead ends: 35 [2020-10-25 23:09:18,835 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2020-10-25 23:09:18,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-25 23:09:18,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-10-25 23:09:18,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-25 23:09:18,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2020-10-25 23:09:18,844 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 37 [2020-10-25 23:09:18,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:09:18,845 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2020-10-25 23:09:18,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-25 23:09:18,845 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2020-10-25 23:09:18,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-25 23:09:18,848 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:09:18,848 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 23:09:19,062 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 23:09:19,063 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:09:19,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:09:19,063 INFO L82 PathProgramCache]: Analyzing trace with hash 1356719978, now seen corresponding path program 3 times [2020-10-25 23:09:19,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:09:19,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374380141] [2020-10-25 23:09:19,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:09:19,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:09:19,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-25 23:09:19,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:09:19,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-25 23:09:19,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:09:19,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-25 23:09:19,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:09:19,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-25 23:09:19,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:09:19,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-25 23:09:19,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:09:19,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-25 23:09:19,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:09:19,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-25 23:09:19,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:09:19,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-25 23:09:19,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:09:19,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-25 23:09:19,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:09:19,321 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 17 proven. 88 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-25 23:09:19,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374380141] [2020-10-25 23:09:19,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672618139] [2020-10-25 23:09:19,322 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 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 [2020-10-25 23:09:19,386 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-10-25 23:09:19,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-25 23:09:19,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-25 23:09:19,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 23:09:19,478 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 65 proven. 22 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2020-10-25 23:09:19,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-25 23:09:19,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2020-10-25 23:09:19,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245425769] [2020-10-25 23:09:19,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-25 23:09:19,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:09:19,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-25 23:09:19,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-25 23:09:19,482 INFO L87 Difference]: Start difference. First operand 35 states and 43 transitions. Second operand 11 states. [2020-10-25 23:09:19,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:09:19,679 INFO L93 Difference]: Finished difference Result 84 states and 123 transitions. [2020-10-25 23:09:19,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-25 23:09:19,680 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 65 [2020-10-25 23:09:19,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:09:19,683 INFO L225 Difference]: With dead ends: 84 [2020-10-25 23:09:19,683 INFO L226 Difference]: Without dead ends: 47 [2020-10-25 23:09:19,685 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 79 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2020-10-25 23:09:19,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-25 23:09:19,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2020-10-25 23:09:19,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-25 23:09:19,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 58 transitions. [2020-10-25 23:09:19,710 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 58 transitions. Word has length 65 [2020-10-25 23:09:19,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:09:19,711 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 58 transitions. [2020-10-25 23:09:19,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-25 23:09:19,711 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 58 transitions. [2020-10-25 23:09:19,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-25 23:09:19,716 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:09:19,716 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 17, 10, 10, 10, 10, 10, 10, 10, 7, 4, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 23:09:19,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 23:09:19,931 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:09:19,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:09:19,932 INFO L82 PathProgramCache]: Analyzing trace with hash 2096727674, now seen corresponding path program 4 times [2020-10-25 23:09:19,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:09:19,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996231529] [2020-10-25 23:09:19,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:09:19,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:09:20,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-25 23:09:20,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:09:20,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-25 23:09:20,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:09:20,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-25 23:09:20,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:09:20,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-25 23:09:20,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:09:20,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-25 23:09:20,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:09:20,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-25 23:09:20,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:09:20,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-25 23:09:20,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:09:20,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-25 23:09:20,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:09:20,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-25 23:09:20,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:09:20,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-25 23:09:20,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:09:20,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-25 23:09:20,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:09:20,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-25 23:09:20,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:09:20,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-25 23:09:20,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:09:20,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-25 23:09:20,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:09:20,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-25 23:09:20,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:09:20,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-25 23:09:20,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:09:20,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-25 23:09:20,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:09:20,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-25 23:09:20,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:09:20,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-25 23:09:20,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:09:20,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-25 23:09:20,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:09:20,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-25 23:09:20,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:09:20,447 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 298 proven. 351 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2020-10-25 23:09:20,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996231529] [2020-10-25 23:09:20,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117792510] [2020-10-25 23:09:20,448 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 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 [2020-10-25 23:09:20,535 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-25 23:09:20,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-25 23:09:20,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-25 23:09:20,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 23:09:20,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 327 proven. 131 refuted. 0 times theorem prover too weak. 698 trivial. 0 not checked. [2020-10-25 23:09:20,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-25 23:09:20,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 17 [2020-10-25 23:09:20,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760470875] [2020-10-25 23:09:20,695 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-25 23:09:20,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:09:20,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-25 23:09:20,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2020-10-25 23:09:20,697 INFO L87 Difference]: Start difference. First operand 44 states and 58 transitions. Second operand 17 states. [2020-10-25 23:09:21,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:09:21,488 INFO L93 Difference]: Finished difference Result 118 states and 209 transitions. [2020-10-25 23:09:21,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-25 23:09:21,489 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 147 [2020-10-25 23:09:21,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:09:21,491 INFO L225 Difference]: With dead ends: 118 [2020-10-25 23:09:21,491 INFO L226 Difference]: Without dead ends: 62 [2020-10-25 23:09:21,493 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 188 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=234, Invalid=888, Unknown=0, NotChecked=0, Total=1122 [2020-10-25 23:09:21,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-25 23:09:21,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 58. [2020-10-25 23:09:21,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-25 23:09:21,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 70 transitions. [2020-10-25 23:09:21,504 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 70 transitions. Word has length 147 [2020-10-25 23:09:21,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:09:21,505 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 70 transitions. [2020-10-25 23:09:21,505 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-25 23:09:21,506 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 70 transitions. [2020-10-25 23:09:21,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-25 23:09:21,507 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:09:21,508 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 12, 7, 7, 7, 7, 7, 7, 7, 5, 3, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 23:09:21,723 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-10-25 23:09:21,724 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:09:21,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:09:21,725 INFO L82 PathProgramCache]: Analyzing trace with hash 876254947, now seen corresponding path program 5 times [2020-10-25 23:09:21,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:09:21,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725238238] [2020-10-25 23:09:21,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:09:21,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 23:09:21,753 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 23:09:21,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 23:09:21,778 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 23:09:21,832 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-25 23:09:21,832 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-25 23:09:21,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-25 23:09:21,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 11:09:21 BoogieIcfgContainer [2020-10-25 23:09:21,962 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 23:09:21,963 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 23:09:21,963 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 23:09:21,964 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 23:09:21,964 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 11:09:15" (3/4) ... [2020-10-25 23:09:21,967 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-25 23:09:22,085 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 23:09:22,094 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 23:09:22,097 INFO L168 Benchmark]: Toolchain (without parser) took 7243.22 ms. Allocated memory was 46.1 MB in the beginning and 125.8 MB in the end (delta: 79.7 MB). Free memory was 23.5 MB in the beginning and 107.4 MB in the end (delta: -83.9 MB). Peak memory consumption was 59.3 MB. Max. memory is 16.1 GB. [2020-10-25 23:09:22,101 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 37.7 MB. Free memory was 22.5 MB in the beginning and 22.5 MB in the end (delta: 56.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 23:09:22,104 INFO L168 Benchmark]: CACSL2BoogieTranslator took 297.73 ms. Allocated memory is still 46.1 MB. Free memory was 22.8 MB in the beginning and 24.9 MB in the end (delta: -2.1 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2020-10-25 23:09:22,105 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.71 ms. Allocated memory is still 46.1 MB. Free memory was 24.9 MB in the beginning and 23.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 23:09:22,106 INFO L168 Benchmark]: Boogie Preprocessor took 23.56 ms. Allocated memory is still 46.1 MB. Free memory was 23.6 MB in the beginning and 22.7 MB in the end (delta: 873.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 23:09:22,106 INFO L168 Benchmark]: RCFGBuilder took 369.90 ms. Allocated memory is still 46.1 MB. Free memory was 22.6 MB in the beginning and 23.1 MB in the end (delta: -497.8 kB). Peak memory consumption was 7.2 MB. Max. memory is 16.1 GB. [2020-10-25 23:09:22,107 INFO L168 Benchmark]: TraceAbstraction took 6365.02 ms. Allocated memory was 46.1 MB in the beginning and 104.9 MB in the end (delta: 58.7 MB). Free memory was 22.6 MB in the beginning and 31.4 MB in the end (delta: -8.8 MB). Peak memory consumption was 50.9 MB. Max. memory is 16.1 GB. [2020-10-25 23:09:22,109 INFO L168 Benchmark]: Witness Printer took 131.44 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 31.4 MB in the beginning and 107.4 MB in the end (delta: -76.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-10-25 23:09:22,113 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 37.7 MB. Free memory was 22.5 MB in the beginning and 22.5 MB in the end (delta: 56.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 297.73 ms. Allocated memory is still 46.1 MB. Free memory was 22.8 MB in the beginning and 24.9 MB in the end (delta: -2.1 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.71 ms. Allocated memory is still 46.1 MB. Free memory was 24.9 MB in the beginning and 23.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.56 ms. Allocated memory is still 46.1 MB. Free memory was 23.6 MB in the beginning and 22.7 MB in the end (delta: 873.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 369.90 ms. Allocated memory is still 46.1 MB. Free memory was 22.6 MB in the beginning and 23.1 MB in the end (delta: -497.8 kB). Peak memory consumption was 7.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6365.02 ms. Allocated memory was 46.1 MB in the beginning and 104.9 MB in the end (delta: 58.7 MB). Free memory was 22.6 MB in the beginning and 31.4 MB in the end (delta: -8.8 MB). Peak memory consumption was 50.9 MB. Max. memory is 16.1 GB. * Witness Printer took 131.44 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 31.4 MB in the beginning and 107.4 MB in the end (delta: -76.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L30] int x = __VERIFIER_nondet_int(); [L31] CALL, EXPR fibonacci(x) VAL [\old(n)=5] [L19] COND FALSE !(n < 1) VAL [\old(n)=5, n=5] [L21] COND FALSE !(n == 1) VAL [\old(n)=5, n=5] [L24] CALL, EXPR fibonacci(n-1) VAL [\old(n)=4] [L19] COND FALSE !(n < 1) VAL [\old(n)=4, n=4] [L21] COND FALSE !(n == 1) VAL [\old(n)=4, n=4] [L24] CALL, EXPR fibonacci(n-1) VAL [\old(n)=3] [L19] COND FALSE !(n < 1) VAL [\old(n)=3, n=3] [L21] COND FALSE !(n == 1) VAL [\old(n)=3, n=3] [L24] CALL, EXPR fibonacci(n-1) VAL [\old(n)=2] [L19] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L21] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L24] CALL, EXPR fibonacci(n-1) VAL [\old(n)=1] [L19] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L21] COND TRUE n == 1 [L22] return 1; VAL [\old(n)=1, \result=1, n=1] [L24] RET, EXPR fibonacci(n-1) VAL [\old(n)=2, fibonacci(n-1)=1, n=2] [L24] CALL, EXPR fibonacci(n-2) VAL [\old(n)=0] [L19] COND TRUE n < 1 [L20] return 0; VAL [\old(n)=0, \result=0, n=0] [L24] RET, EXPR fibonacci(n-2) VAL [\old(n)=2, fibonacci(n-1)=1, fibonacci(n-2)=0, n=2] [L24] return fibonacci(n-1) + fibonacci(n-2); [L24] RET, EXPR fibonacci(n-1) VAL [\old(n)=3, fibonacci(n-1)=1, n=3] [L24] CALL, EXPR fibonacci(n-2) VAL [\old(n)=1] [L19] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L21] COND TRUE n == 1 [L22] return 1; VAL [\old(n)=1, \result=1, n=1] [L24] RET, EXPR fibonacci(n-2) VAL [\old(n)=3, fibonacci(n-1)=1, fibonacci(n-2)=1, n=3] [L24] return fibonacci(n-1) + fibonacci(n-2); [L24] RET, EXPR fibonacci(n-1) VAL [\old(n)=4, fibonacci(n-1)=2, n=4] [L24] CALL, EXPR fibonacci(n-2) VAL [\old(n)=2] [L19] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L21] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L24] CALL, EXPR fibonacci(n-1) VAL [\old(n)=1] [L19] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L21] COND TRUE n == 1 [L22] return 1; VAL [\old(n)=1, \result=1, n=1] [L24] RET, EXPR fibonacci(n-1) VAL [\old(n)=2, fibonacci(n-1)=1, n=2] [L24] CALL, EXPR fibonacci(n-2) VAL [\old(n)=0] [L19] COND TRUE n < 1 [L20] return 0; VAL [\old(n)=0, \result=0, n=0] [L24] RET, EXPR fibonacci(n-2) VAL [\old(n)=2, fibonacci(n-1)=1, fibonacci(n-2)=0, n=2] [L24] return fibonacci(n-1) + fibonacci(n-2); [L24] RET, EXPR fibonacci(n-2) VAL [\old(n)=4, fibonacci(n-1)=2, fibonacci(n-2)=1, n=4] [L24] return fibonacci(n-1) + fibonacci(n-2); [L24] RET, EXPR fibonacci(n-1) VAL [\old(n)=5, fibonacci(n-1)=3, n=5] [L24] CALL, EXPR fibonacci(n-2) VAL [\old(n)=3] [L19] COND FALSE !(n < 1) VAL [\old(n)=3, n=3] [L21] COND FALSE !(n == 1) VAL [\old(n)=3, n=3] [L24] CALL, EXPR fibonacci(n-1) VAL [\old(n)=2] [L19] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L21] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L24] CALL, EXPR fibonacci(n-1) VAL [\old(n)=1] [L19] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L21] COND TRUE n == 1 [L22] return 1; VAL [\old(n)=1, \result=1, n=1] [L24] RET, EXPR fibonacci(n-1) VAL [\old(n)=2, fibonacci(n-1)=1, n=2] [L24] CALL, EXPR fibonacci(n-2) VAL [\old(n)=0] [L19] COND TRUE n < 1 [L20] return 0; VAL [\old(n)=0, \result=0, n=0] [L24] RET, EXPR fibonacci(n-2) VAL [\old(n)=2, fibonacci(n-1)=1, fibonacci(n-2)=0, n=2] [L24] return fibonacci(n-1) + fibonacci(n-2); [L24] RET, EXPR fibonacci(n-1) VAL [\old(n)=3, fibonacci(n-1)=1, n=3] [L24] CALL, EXPR fibonacci(n-2) VAL [\old(n)=1] [L19] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L21] COND TRUE n == 1 [L22] return 1; VAL [\old(n)=1, \result=1, n=1] [L24] RET, EXPR fibonacci(n-2) VAL [\old(n)=3, fibonacci(n-1)=1, fibonacci(n-2)=1, n=3] [L24] return fibonacci(n-1) + fibonacci(n-2); [L24] RET, EXPR fibonacci(n-2) VAL [\old(n)=5, fibonacci(n-1)=3, fibonacci(n-2)=2, n=5] [L24] return fibonacci(n-1) + fibonacci(n-2); [L31] RET, EXPR fibonacci(x) [L31] int result = fibonacci(x); [L32] COND FALSE !(x != 5 || result == 3) [L3] __assert_fail("0", "Fibonacci04.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 6.1s, OverallIterations: 8, TraceHistogramMax: 21, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 117 SDtfs, 231 SDslu, 371 SDs, 0 SdLazy, 841 SolverSat, 208 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 474 GetRequests, 377 SyntacticMatches, 7 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 9 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 719 NumberOfCodeBlocks, 673 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 601 ConstructedInterpolants, 0 QuantifiedInterpolants, 97977 SizeOfPredicates, 20 NumberOfNonLiveVariables, 672 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 12 InterpolantComputations, 2 PerfectInterpolantSequences, 2193/2834 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...