./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive/recHanoi02-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_023b44a5-534f-4965-afae-b7ce5e740621/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_023b44a5-534f-4965-afae-b7ce5e740621/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_023b44a5-534f-4965-afae-b7ce5e740621/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_023b44a5-534f-4965-afae-b7ce5e740621/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/recHanoi02-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_023b44a5-534f-4965-afae-b7ce5e740621/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_023b44a5-534f-4965-afae-b7ce5e740621/bin/uautomizer --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 47fcb479d933beca049827d7d80a7b2ad5309684 ...................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 19:49:00,998 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:49:01,001 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:49:01,073 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:49:01,074 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:49:01,076 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:49:01,079 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:49:01,082 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:49:01,085 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:49:01,087 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:49:01,089 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:49:01,091 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:49:01,091 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:49:01,093 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:49:01,096 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:49:01,099 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:49:01,102 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:49:01,108 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:49:01,112 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:49:01,123 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:49:01,125 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:49:01,130 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:49:01,132 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:49:01,134 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:49:01,138 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:49:01,138 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:49:01,139 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:49:01,141 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:49:01,142 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:49:01,143 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:49:01,144 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:49:01,145 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:49:01,147 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:49:01,148 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:49:01,149 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:49:01,150 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:49:01,151 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:49:01,152 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:49:01,152 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:49:01,154 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:49:01,155 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:49:01,162 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_023b44a5-534f-4965-afae-b7ce5e740621/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 19:49:01,221 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:49:01,222 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:49:01,227 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:49:01,228 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:49:01,228 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:49:01,229 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:49:01,229 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 19:49:01,230 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:49:01,230 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 19:49:01,230 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:49:01,231 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 19:49:01,232 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 19:49:01,232 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 19:49:01,232 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 19:49:01,233 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:49:01,233 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:49:01,233 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 19:49:01,234 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:49:01,234 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:49:01,234 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 19:49:01,234 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 19:49:01,235 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:49:01,235 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:49:01,236 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 19:49:01,236 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 19:49:01,237 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 19:49:01,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 19:49:01,237 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 19:49:01,238 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:49:01,239 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:/tmp/vcloud-vcloud-master/worker/run_dir_023b44a5-534f-4965-afae-b7ce5e740621/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_023b44a5-534f-4965-afae-b7ce5e740621/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 47fcb479d933beca049827d7d80a7b2ad5309684 [2020-11-29 19:49:01,692 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:49:01,733 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:49:01,736 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:49:01,738 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:49:01,739 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:49:01,740 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_023b44a5-534f-4965-afae-b7ce5e740621/bin/uautomizer/../../sv-benchmarks/c/recursive/recHanoi02-2.c [2020-11-29 19:49:01,823 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_023b44a5-534f-4965-afae-b7ce5e740621/bin/uautomizer/data/79f7e2d30/a40957b792c84499bceff537fb2f5c70/FLAG38d0be952 [2020-11-29 19:49:02,444 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:49:02,445 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_023b44a5-534f-4965-afae-b7ce5e740621/sv-benchmarks/c/recursive/recHanoi02-2.c [2020-11-29 19:49:02,453 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_023b44a5-534f-4965-afae-b7ce5e740621/bin/uautomizer/data/79f7e2d30/a40957b792c84499bceff537fb2f5c70/FLAG38d0be952 [2020-11-29 19:49:02,819 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_023b44a5-534f-4965-afae-b7ce5e740621/bin/uautomizer/data/79f7e2d30/a40957b792c84499bceff537fb2f5c70 [2020-11-29 19:49:02,827 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:49:02,829 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:49:02,832 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:49:02,832 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:49:02,840 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:49:02,841 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:49:02" (1/1) ... [2020-11-29 19:49:02,853 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3186b0ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:49:02, skipping insertion in model container [2020-11-29 19:49:02,853 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:49:02" (1/1) ... [2020-11-29 19:49:02,860 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:49:02,884 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:49:03,109 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:49:03,124 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:49:03,144 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:49:03,163 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:49:03,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:49:03 WrapperNode [2020-11-29 19:49:03,164 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:49:03,166 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:49:03,166 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:49:03,166 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:49:03,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:49:03" (1/1) ... [2020-11-29 19:49:03,185 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:49:03" (1/1) ... [2020-11-29 19:49:03,207 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:49:03,236 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:49:03,237 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:49:03,237 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:49:03,257 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:49:03" (1/1) ... [2020-11-29 19:49:03,257 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:49:03" (1/1) ... [2020-11-29 19:49:03,273 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:49:03" (1/1) ... [2020-11-29 19:49:03,273 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:49:03" (1/1) ... [2020-11-29 19:49:03,277 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:49:03" (1/1) ... [2020-11-29 19:49:03,283 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:49:03" (1/1) ... [2020-11-29 19:49:03,286 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:49:03" (1/1) ... [2020-11-29 19:49:03,288 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:49:03,290 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:49:03,290 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:49:03,290 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:49:03,292 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:49:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_023b44a5-534f-4965-afae-b7ce5e740621/bin/uautomizer/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 [2020-11-29 19:49:03,381 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2020-11-29 19:49:03,382 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2020-11-29 19:49:03,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:49:03,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:49:03,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 19:49:03,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 19:49:03,714 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:49:03,714 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-29 19:49:03,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:49:03 BoogieIcfgContainer [2020-11-29 19:49:03,724 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:49:03,727 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 19:49:03,727 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 19:49:03,747 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 19:49:03,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:49:02" (1/3) ... [2020-11-29 19:49:03,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68160009 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:49:03, skipping insertion in model container [2020-11-29 19:49:03,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:49:03" (2/3) ... [2020-11-29 19:49:03,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68160009 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:49:03, skipping insertion in model container [2020-11-29 19:49:03,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:49:03" (3/3) ... [2020-11-29 19:49:03,752 INFO L111 eAbstractionObserver]: Analyzing ICFG recHanoi02-2.c [2020-11-29 19:49:03,767 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 19:49:03,772 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 19:49:03,787 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 19:49:03,827 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 19:49:03,828 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 19:49:03,828 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 19:49:03,828 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:49:03,829 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:49:03,829 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 19:49:03,829 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:49:03,829 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 19:49:03,877 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-11-29 19:49:03,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 19:49:03,883 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:49:03,886 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:49:03,887 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:49:03,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:49:03,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1397741056, now seen corresponding path program 1 times [2020-11-29 19:49:03,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:49:03,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215172217] [2020-11-29 19:49:03,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:49:04,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:49:04,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 19:49:04,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:49:04,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:49:04,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215172217] [2020-11-29 19:49:04,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:49:04,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 19:49:04,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516488027] [2020-11-29 19:49:04,332 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 19:49:04,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:49:04,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 19:49:04,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:49:04,361 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 6 states. [2020-11-29 19:49:04,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:49:04,483 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2020-11-29 19:49:04,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 19:49:04,487 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-11-29 19:49:04,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:49:04,500 INFO L225 Difference]: With dead ends: 33 [2020-11-29 19:49:04,504 INFO L226 Difference]: Without dead ends: 16 [2020-11-29 19:49:04,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-11-29 19:49:04,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-29 19:49:04,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-29 19:49:04,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-29 19:49:04,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2020-11-29 19:49:04,569 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 11 [2020-11-29 19:49:04,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:49:04,571 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2020-11-29 19:49:04,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 19:49:04,571 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-11-29 19:49:04,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-29 19:49:04,574 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:49:04,574 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:49:04,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 19:49:04,576 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:49:04,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:49:04,578 INFO L82 PathProgramCache]: Analyzing trace with hash -588624460, now seen corresponding path program 1 times [2020-11-29 19:49:04,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:49:04,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416360500] [2020-11-29 19:49:04,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:49:04,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:49:04,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 19:49:04,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:49:04,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:49:04,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:49:04,783 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 19:49:04,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416360500] [2020-11-29 19:49:04,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927964426] [2020-11-29 19:49:04,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_023b44a5-534f-4965-afae-b7ce5e740621/bin/uautomizer/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 [2020-11-29 19:49:04,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:49:04,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 19:49:04,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:49:05,036 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 19:49:05,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-29 19:49:05,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 9 [2020-11-29 19:49:05,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947384873] [2020-11-29 19:49:05,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 19:49:05,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:49:05,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 19:49:05,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-11-29 19:49:05,043 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 7 states. [2020-11-29 19:49:05,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:49:05,072 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2020-11-29 19:49:05,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 19:49:05,072 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2020-11-29 19:49:05,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:49:05,073 INFO L225 Difference]: With dead ends: 16 [2020-11-29 19:49:05,073 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 19:49:05,074 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-11-29 19:49:05,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 19:49:05,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 19:49:05,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 19:49:05,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 19:49:05,076 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-11-29 19:49:05,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:49:05,076 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 19:49:05,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 19:49:05,076 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 19:49:05,076 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 19:49:05,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-29 19:49:05,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 19:49:05,317 INFO L274 CegarLoopResult]: For program point hanoiEXIT(lines 20 25) no Hoare annotation was computed. [2020-11-29 19:49:05,317 INFO L277 CegarLoopResult]: At program point hanoiENTRY(lines 20 25) the Hoare annotation is: true [2020-11-29 19:49:05,317 INFO L274 CegarLoopResult]: For program point hanoiFINAL(lines 20 25) no Hoare annotation was computed. [2020-11-29 19:49:05,317 INFO L277 CegarLoopResult]: At program point L24(line 24) the Hoare annotation is: true [2020-11-29 19:49:05,317 INFO L274 CegarLoopResult]: For program point L24-1(line 24) no Hoare annotation was computed. [2020-11-29 19:49:05,318 INFO L274 CegarLoopResult]: For program point L21(lines 21 23) no Hoare annotation was computed. [2020-11-29 19:49:05,318 INFO L270 CegarLoopResult]: At program point L33(line 33) the Hoare annotation is: (<= 1 ULTIMATE.start_main_~n~0) [2020-11-29 19:49:05,318 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 19:49:05,318 INFO L274 CegarLoopResult]: For program point L33-1(line 33) no Hoare annotation was computed. [2020-11-29 19:49:05,318 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 19:49:05,318 INFO L274 CegarLoopResult]: For program point L30(lines 30 32) no Hoare annotation was computed. [2020-11-29 19:49:05,318 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 19:49:05,319 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 19:49:05,319 INFO L277 CegarLoopResult]: At program point L28(lines 28 39) the Hoare annotation is: true [2020-11-29 19:49:05,319 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-29 19:49:05,319 INFO L274 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-11-29 19:49:05,319 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-29 19:49:05,319 INFO L274 CegarLoopResult]: For program point L34(lines 34 38) no Hoare annotation was computed. [2020-11-29 19:49:05,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 07:49:05 BoogieIcfgContainer [2020-11-29 19:49:05,336 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 19:49:05,337 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:49:05,338 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:49:05,338 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:49:05,339 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:49:03" (3/4) ... [2020-11-29 19:49:05,343 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 19:49:05,351 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure hanoi [2020-11-29 19:49:05,359 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-11-29 19:49:05,360 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 19:49:05,360 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 19:49:05,361 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 19:49:05,426 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_023b44a5-534f-4965-afae-b7ce5e740621/bin/uautomizer/witness.graphml [2020-11-29 19:49:05,426 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:49:05,428 INFO L168 Benchmark]: Toolchain (without parser) took 2597.65 ms. Allocated memory was 96.5 MB in the beginning and 127.9 MB in the end (delta: 31.5 MB). Free memory was 57.0 MB in the beginning and 60.0 MB in the end (delta: -3.0 MB). Peak memory consumption was 28.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:49:05,429 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 96.5 MB. Free memory is still 73.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:49:05,430 INFO L168 Benchmark]: CACSL2BoogieTranslator took 332.80 ms. Allocated memory is still 96.5 MB. Free memory was 56.8 MB in the beginning and 47.8 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:49:05,431 INFO L168 Benchmark]: Boogie Procedure Inliner took 69.44 ms. Allocated memory was 96.5 MB in the beginning and 127.9 MB in the end (delta: 31.5 MB). Free memory was 47.8 MB in the beginning and 107.3 MB in the end (delta: -59.5 MB). Peak memory consumption was 6.2 MB. Max. memory is 16.1 GB. [2020-11-29 19:49:05,431 INFO L168 Benchmark]: Boogie Preprocessor took 52.48 ms. Allocated memory is still 127.9 MB. Free memory was 107.3 MB in the beginning and 106.4 MB in the end (delta: 934.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:49:05,432 INFO L168 Benchmark]: RCFGBuilder took 435.19 ms. Allocated memory is still 127.9 MB. Free memory was 106.3 MB in the beginning and 98.3 MB in the end (delta: 8.1 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.1 GB. [2020-11-29 19:49:05,433 INFO L168 Benchmark]: TraceAbstraction took 1609.71 ms. Allocated memory is still 127.9 MB. Free memory was 98.1 MB in the beginning and 62.6 MB in the end (delta: 35.5 MB). Peak memory consumption was 33.9 MB. Max. memory is 16.1 GB. [2020-11-29 19:49:05,434 INFO L168 Benchmark]: Witness Printer took 88.77 ms. Allocated memory is still 127.9 MB. Free memory was 62.6 MB in the beginning and 60.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:49:05,438 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 96.5 MB. Free memory is still 73.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 332.80 ms. Allocated memory is still 96.5 MB. Free memory was 56.8 MB in the beginning and 47.8 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 69.44 ms. Allocated memory was 96.5 MB in the beginning and 127.9 MB in the end (delta: 31.5 MB). Free memory was 47.8 MB in the beginning and 107.3 MB in the end (delta: -59.5 MB). Peak memory consumption was 6.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 52.48 ms. Allocated memory is still 127.9 MB. Free memory was 107.3 MB in the beginning and 106.4 MB in the end (delta: 934.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 435.19 ms. Allocated memory is still 127.9 MB. Free memory was 106.3 MB in the beginning and 98.3 MB in the end (delta: 8.1 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1609.71 ms. Allocated memory is still 127.9 MB. Free memory was 98.1 MB in the beginning and 62.6 MB in the end (delta: 35.5 MB). Peak memory consumption was 33.9 MB. Max. memory is 16.1 GB. * Witness Printer took 88.77 ms. Allocated memory is still 127.9 MB. Free memory was 62.6 MB in the beginning and 60.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.4s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 32 SDtfs, 12 SDslu, 118 SDs, 0 SdLazy, 26 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 6 PreInvPairs, 9 NumberOfFragments, 6 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 1160 SizeOfPredicates, 1 NumberOfNonLiveVariables, 70 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 6/8 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 correct! Received shutdown request...