./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound5.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_a20fe59a-acb8-4f39-b486-7cd5af91d699/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a20fe59a-acb8-4f39-b486-7cd5af91d699/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a20fe59a-acb8-4f39-b486-7cd5af91d699/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a20fe59a-acb8-4f39-b486-7cd5af91d699/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound5.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a20fe59a-acb8-4f39-b486-7cd5af91d699/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a20fe59a-acb8-4f39-b486-7cd5af91d699/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 5691355e15b410e2407124fd7e64eda88df84f74 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 02:57:59,162 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:57:59,165 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:57:59,236 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:57:59,236 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:57:59,251 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:57:59,254 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:57:59,258 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:57:59,261 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:57:59,267 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:57:59,268 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:57:59,270 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:57:59,271 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:57:59,274 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:57:59,276 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:57:59,278 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:57:59,279 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:57:59,283 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:57:59,286 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:57:59,294 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:57:59,296 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:57:59,297 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:57:59,300 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:57:59,301 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:57:59,310 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:57:59,310 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:57:59,311 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:57:59,313 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:57:59,314 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:57:59,315 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:57:59,316 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:57:59,317 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:57:59,319 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:57:59,320 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:57:59,322 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:57:59,322 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:57:59,323 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:57:59,323 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:57:59,323 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:57:59,324 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:57:59,325 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:57:59,328 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a20fe59a-acb8-4f39-b486-7cd5af91d699/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 02:57:59,367 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:57:59,367 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:57:59,369 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:57:59,369 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:57:59,369 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:57:59,370 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:57:59,370 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 02:57:59,370 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:57:59,370 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 02:57:59,371 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:57:59,372 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 02:57:59,372 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 02:57:59,372 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 02:57:59,372 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 02:57:59,372 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 02:57:59,373 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:57:59,373 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 02:57:59,373 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:57:59,373 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:57:59,374 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 02:57:59,374 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 02:57:59,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:57:59,374 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:57:59,374 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 02:57:59,375 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 02:57:59,375 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 02:57:59,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 02:57:59,375 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 02:57:59,375 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:57:59,376 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_a20fe59a-acb8-4f39-b486-7cd5af91d699/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a20fe59a-acb8-4f39-b486-7cd5af91d699/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5691355e15b410e2407124fd7e64eda88df84f74 [2020-11-28 02:57:59,666 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:57:59,697 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:57:59,702 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:57:59,703 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:57:59,706 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:57:59,707 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a20fe59a-acb8-4f39-b486-7cd5af91d699/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound5.c [2020-11-28 02:57:59,797 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a20fe59a-acb8-4f39-b486-7cd5af91d699/bin/uautomizer/data/fc3f8fd7c/340bb04f528e4def987534f72215b23b/FLAGaab2dc109 [2020-11-28 02:58:00,262 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:58:00,263 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a20fe59a-acb8-4f39-b486-7cd5af91d699/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound5.c [2020-11-28 02:58:00,269 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a20fe59a-acb8-4f39-b486-7cd5af91d699/bin/uautomizer/data/fc3f8fd7c/340bb04f528e4def987534f72215b23b/FLAGaab2dc109 [2020-11-28 02:58:00,641 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a20fe59a-acb8-4f39-b486-7cd5af91d699/bin/uautomizer/data/fc3f8fd7c/340bb04f528e4def987534f72215b23b [2020-11-28 02:58:00,644 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:58:00,646 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 02:58:00,651 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:58:00,651 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:58:00,655 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:58:00,656 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:58:00" (1/1) ... [2020-11-28 02:58:00,658 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@659ad19f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:00, skipping insertion in model container [2020-11-28 02:58:00,658 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:58:00" (1/1) ... [2020-11-28 02:58:00,666 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:58:00,685 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:58:00,877 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:58:00,888 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:58:00,905 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:58:00,917 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:58:00,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:00 WrapperNode [2020-11-28 02:58:00,918 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:58:00,919 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 02:58:00,919 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 02:58:00,919 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 02:58:00,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:00" (1/1) ... [2020-11-28 02:58:00,936 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:00" (1/1) ... [2020-11-28 02:58:00,970 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 02:58:00,971 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:58:00,971 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:58:00,971 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:58:00,979 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:00" (1/1) ... [2020-11-28 02:58:00,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:00" (1/1) ... [2020-11-28 02:58:00,981 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:00" (1/1) ... [2020-11-28 02:58:00,981 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:00" (1/1) ... [2020-11-28 02:58:00,985 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:00" (1/1) ... [2020-11-28 02:58:00,989 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:00" (1/1) ... [2020-11-28 02:58:00,990 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:00" (1/1) ... [2020-11-28 02:58:00,992 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:58:00,993 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:58:00,994 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:58:00,994 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:58:00,995 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:00" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a20fe59a-acb8-4f39-b486-7cd5af91d699/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 [2020-11-28 02:58:01,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 02:58:01,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 02:58:01,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:58:01,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:58:01,349 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:58:01,350 INFO L298 CfgBuilder]: Removed 21 assume(true) statements. [2020-11-28 02:58:01,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:01 BoogieIcfgContainer [2020-11-28 02:58:01,351 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:58:01,371 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 02:58:01,371 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 02:58:01,375 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 02:58:01,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:58:00" (1/3) ... [2020-11-28 02:58:01,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@718e2c8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:58:01, skipping insertion in model container [2020-11-28 02:58:01,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:00" (2/3) ... [2020-11-28 02:58:01,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@718e2c8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:58:01, skipping insertion in model container [2020-11-28 02:58:01,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:01" (3/3) ... [2020-11-28 02:58:01,378 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-ll_valuebound5.c [2020-11-28 02:58:01,392 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 02:58:01,397 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-28 02:58:01,424 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-28 02:58:01,448 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 02:58:01,449 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 02:58:01,449 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 02:58:01,449 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:58:01,449 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:58:01,449 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 02:58:01,449 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:58:01,450 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 02:58:01,463 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-11-28 02:58:01,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 02:58:01,468 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:01,468 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:01,469 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:58:01,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:01,474 INFO L82 PathProgramCache]: Analyzing trace with hash -144177098, now seen corresponding path program 1 times [2020-11-28 02:58:01,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:01,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607508741] [2020-11-28 02:58:01,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:01,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:01,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:01,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607508741] [2020-11-28 02:58:01,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:01,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:58:01,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72937] [2020-11-28 02:58:01,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 02:58:01,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:01,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 02:58:01,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 02:58:01,758 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2020-11-28 02:58:01,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:01,776 INFO L93 Difference]: Finished difference Result 43 states and 58 transitions. [2020-11-28 02:58:01,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 02:58:01,777 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-11-28 02:58:01,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:01,786 INFO L225 Difference]: With dead ends: 43 [2020-11-28 02:58:01,786 INFO L226 Difference]: Without dead ends: 19 [2020-11-28 02:58:01,789 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 02:58:01,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-11-28 02:58:01,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-11-28 02:58:01,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-28 02:58:01,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-11-28 02:58:01,823 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 13 [2020-11-28 02:58:01,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:01,823 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-11-28 02:58:01,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 02:58:01,824 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-11-28 02:58:01,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 02:58:01,826 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:01,826 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:01,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 02:58:01,827 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:58:01,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:01,831 INFO L82 PathProgramCache]: Analyzing trace with hash -1281167042, now seen corresponding path program 1 times [2020-11-28 02:58:01,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:01,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438944149] [2020-11-28 02:58:01,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:01,876 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 02:58:01,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [180956408] [2020-11-28 02:58:01,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a20fe59a-acb8-4f39-b486-7cd5af91d699/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 [2020-11-28 02:58:01,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:01,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 02:58:01,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:58:02,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:02,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438944149] [2020-11-28 02:58:02,028 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 02:58:02,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180956408] [2020-11-28 02:58:02,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:02,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:58:02,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277267571] [2020-11-28 02:58:02,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:58:02,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:02,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:58:02,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:58:02,032 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 4 states. [2020-11-28 02:58:02,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:02,100 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2020-11-28 02:58:02,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 02:58:02,101 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-28 02:58:02,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:02,102 INFO L225 Difference]: With dead ends: 29 [2020-11-28 02:58:02,102 INFO L226 Difference]: Without dead ends: 23 [2020-11-28 02:58:02,103 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:58:02,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-28 02:58:02,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-11-28 02:58:02,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-28 02:58:02,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2020-11-28 02:58:02,111 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 13 [2020-11-28 02:58:02,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:02,113 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2020-11-28 02:58:02,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:58:02,113 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2020-11-28 02:58:02,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 02:58:02,115 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:02,116 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:02,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-28 02:58:02,317 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:58:02,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:02,317 INFO L82 PathProgramCache]: Analyzing trace with hash 2132918982, now seen corresponding path program 1 times [2020-11-28 02:58:02,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:02,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375558874] [2020-11-28 02:58:02,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:02,339 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 02:58:02,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [797506119] [2020-11-28 02:58:02,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a20fe59a-acb8-4f39-b486-7cd5af91d699/bin/uautomizer/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 [2020-11-28 02:58:02,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:02,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-28 02:58:02,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:58:02,532 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:02,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375558874] [2020-11-28 02:58:02,533 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 02:58:02,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797506119] [2020-11-28 02:58:02,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 02:58:02,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-28 02:58:02,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323914106] [2020-11-28 02:58:02,534 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:58:02,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:02,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:58:02,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:58:02,536 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 5 states. [2020-11-28 02:58:07,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:07,221 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2020-11-28 02:58:07,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 02:58:07,224 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-11-28 02:58:07,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:07,224 INFO L225 Difference]: With dead ends: 29 [2020-11-28 02:58:07,225 INFO L226 Difference]: Without dead ends: 27 [2020-11-28 02:58:07,225 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:58:07,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-28 02:58:07,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2020-11-28 02:58:07,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-28 02:58:07,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2020-11-28 02:58:07,230 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 16 [2020-11-28 02:58:07,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:07,230 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2020-11-28 02:58:07,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:58:07,230 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2020-11-28 02:58:07,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 02:58:07,231 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:07,231 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:07,435 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:58:07,435 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:58:07,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:07,436 INFO L82 PathProgramCache]: Analyzing trace with hash 2049083668, now seen corresponding path program 1 times [2020-11-28 02:58:07,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:07,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792316487] [2020-11-28 02:58:07,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:07,466 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 02:58:07,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1261926314] [2020-11-28 02:58:07,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a20fe59a-acb8-4f39-b486-7cd5af91d699/bin/uautomizer/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 [2020-11-28 02:58:07,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:07,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-28 02:58:07,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:58:07,578 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-28 02:58:07,578 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 02:58:07,663 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 02:58:07,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792316487] [2020-11-28 02:58:07,664 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 02:58:07,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261926314] [2020-11-28 02:58:07,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:07,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 02:58:07,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575460152] [2020-11-28 02:58:07,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:58:07,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:07,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:58:07,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:58:07,666 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 5 states. [2020-11-28 02:58:11,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:11,865 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2020-11-28 02:58:11,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 02:58:11,867 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-11-28 02:58:11,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:11,867 INFO L225 Difference]: With dead ends: 24 [2020-11-28 02:58:11,867 INFO L226 Difference]: Without dead ends: 20 [2020-11-28 02:58:11,868 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:58:11,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-11-28 02:58:11,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-11-28 02:58:11,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-28 02:58:11,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2020-11-28 02:58:11,872 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 19 [2020-11-28 02:58:11,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:11,873 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2020-11-28 02:58:11,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:58:11,883 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-11-28 02:58:11,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 02:58:11,884 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:11,884 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:12,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:58:12,107 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:58:12,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:12,107 INFO L82 PathProgramCache]: Analyzing trace with hash 2049123390, now seen corresponding path program 2 times [2020-11-28 02:58:12,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:12,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560411705] [2020-11-28 02:58:12,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:12,123 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 02:58:12,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [828398033] [2020-11-28 02:58:12,123 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a20fe59a-acb8-4f39-b486-7cd5af91d699/bin/uautomizer/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 [2020-11-28 02:58:12,170 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 02:58:12,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 02:58:12,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-28 02:58:12,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:58:12,269 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-28 02:58:12,269 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 02:58:12,852 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2020-11-28 02:58:12,873 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 02:58:12,902 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 02:58:12,964 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:12,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560411705] [2020-11-28 02:58:12,965 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 02:58:12,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828398033] [2020-11-28 02:58:12,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 02:58:12,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-28 02:58:12,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392897166] [2020-11-28 02:58:12,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 02:58:12,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:12,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 02:58:12,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-28 02:58:12,967 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 8 states. [2020-11-28 02:58:16,467 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 28 [2020-11-28 02:58:19,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:19,662 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2020-11-28 02:58:19,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 02:58:19,666 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-11-28 02:58:19,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:19,667 INFO L225 Difference]: With dead ends: 25 [2020-11-28 02:58:19,667 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 02:58:19,668 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-11-28 02:58:19,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 02:58:19,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 02:58:19,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 02:58:19,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 02:58:19,669 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-11-28 02:58:19,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:19,669 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:58:19,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 02:58:19,669 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 02:58:19,669 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 02:58:19,870 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:58:19,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 02:58:20,005 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2020-11-28 02:58:20,005 INFO L270 CegarLoopResult]: At program point L36-2(lines 36 46) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~x~0 1) (= ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0)) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) [2020-11-28 02:58:20,005 INFO L274 CegarLoopResult]: For program point L36-3(lines 36 46) no Hoare annotation was computed. [2020-11-28 02:58:20,005 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-28 02:58:20,005 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 02:58:20,005 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 02:58:20,005 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2020-11-28 02:58:20,006 INFO L274 CegarLoopResult]: For program point L16(lines 16 19) no Hoare annotation was computed. [2020-11-28 02:58:20,006 INFO L270 CegarLoopResult]: At program point L16-1(lines 39 40) the Hoare annotation is: (and (= (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) 1) (+ ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) [2020-11-28 02:58:20,006 INFO L274 CegarLoopResult]: For program point L16-2(lines 16 19) no Hoare annotation was computed. [2020-11-28 02:58:20,006 INFO L277 CegarLoopResult]: At program point L16-3(lines 15 21) the Hoare annotation is: true [2020-11-28 02:58:20,006 INFO L274 CegarLoopResult]: For program point L12(lines 12 14) no Hoare annotation was computed. [2020-11-28 02:58:20,006 INFO L274 CegarLoopResult]: For program point L12-1(lines 12 14) no Hoare annotation was computed. [2020-11-28 02:58:20,006 INFO L274 CegarLoopResult]: For program point L12-2(lines 12 14) no Hoare annotation was computed. [2020-11-28 02:58:20,006 INFO L274 CegarLoopResult]: For program point L12-3(lines 12 14) no Hoare annotation was computed. [2020-11-28 02:58:20,006 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 02:58:20,006 INFO L274 CegarLoopResult]: For program point L17(lines 17 18) no Hoare annotation was computed. [2020-11-28 02:58:20,007 INFO L274 CegarLoopResult]: For program point L17-1(lines 17 18) no Hoare annotation was computed. [2020-11-28 02:58:20,007 INFO L274 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-11-28 02:58:20,007 INFO L274 CegarLoopResult]: For program point L13-2(line 13) no Hoare annotation was computed. [2020-11-28 02:58:20,007 INFO L274 CegarLoopResult]: For program point L13-4(line 13) no Hoare annotation was computed. [2020-11-28 02:58:20,007 INFO L274 CegarLoopResult]: For program point L13-6(line 13) no Hoare annotation was computed. [2020-11-28 02:58:20,007 INFO L277 CegarLoopResult]: At program point L51(lines 22 52) the Hoare annotation is: true [2020-11-28 02:58:20,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:58:20 BoogieIcfgContainer [2020-11-28 02:58:20,019 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 02:58:20,020 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:58:20,020 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:58:20,020 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:58:20,021 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:01" (3/4) ... [2020-11-28 02:58:20,024 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 02:58:20,033 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-11-28 02:58:20,033 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 02:58:20,034 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 02:58:20,034 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 02:58:20,080 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a20fe59a-acb8-4f39-b486-7cd5af91d699/bin/uautomizer/witness.graphml [2020-11-28 02:58:20,080 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:58:20,085 INFO L168 Benchmark]: Toolchain (without parser) took 19437.49 ms. Allocated memory was 83.9 MB in the beginning and 102.8 MB in the end (delta: 18.9 MB). Free memory was 53.9 MB in the beginning and 73.3 MB in the end (delta: -19.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:58:20,086 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 83.9 MB. Free memory was 43.3 MB in the beginning and 43.3 MB in the end (delta: 34.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:58:20,086 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.75 ms. Allocated memory is still 83.9 MB. Free memory was 53.7 MB in the beginning and 61.7 MB in the end (delta: -7.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:20,087 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.74 ms. Allocated memory is still 83.9 MB. Free memory was 61.7 MB in the beginning and 60.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:58:20,088 INFO L168 Benchmark]: Boogie Preprocessor took 22.05 ms. Allocated memory is still 83.9 MB. Free memory was 60.2 MB in the beginning and 59.2 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:58:20,091 INFO L168 Benchmark]: RCFGBuilder took 358.15 ms. Allocated memory is still 83.9 MB. Free memory was 59.2 MB in the beginning and 46.3 MB in the end (delta: 12.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:20,092 INFO L168 Benchmark]: TraceAbstraction took 18648.32 ms. Allocated memory was 83.9 MB in the beginning and 102.8 MB in the end (delta: 18.9 MB). Free memory was 45.5 MB in the beginning and 76.2 MB in the end (delta: -30.7 MB). Peak memory consumption was 32.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:20,094 INFO L168 Benchmark]: Witness Printer took 60.32 ms. Allocated memory is still 102.8 MB. Free memory was 76.2 MB in the beginning and 73.3 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:20,098 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 83.9 MB. Free memory was 43.3 MB in the beginning and 43.3 MB in the end (delta: 34.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 267.75 ms. Allocated memory is still 83.9 MB. Free memory was 53.7 MB in the beginning and 61.7 MB in the end (delta: -7.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.74 ms. Allocated memory is still 83.9 MB. Free memory was 61.7 MB in the beginning and 60.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.05 ms. Allocated memory is still 83.9 MB. Free memory was 60.2 MB in the beginning and 59.2 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 358.15 ms. Allocated memory is still 83.9 MB. Free memory was 59.2 MB in the beginning and 46.3 MB in the end (delta: 12.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 18648.32 ms. Allocated memory was 83.9 MB in the beginning and 102.8 MB in the end (delta: 18.9 MB). Free memory was 45.5 MB in the beginning and 76.2 MB in the end (delta: -30.7 MB). Peak memory consumption was 32.1 MB. Max. memory is 16.1 GB. * Witness Printer took 60.32 ms. Allocated memory is still 102.8 MB. Free memory was 76.2 MB in the beginning and 73.3 MB in the end (delta: 3.0 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: 9]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 9]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: z * x + 1 == x + y && 1 == cond - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: (x == 1 && z == y) || 1 <= cond - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 23 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 18.4s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 15.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 77 SDtfs, 27 SDslu, 136 SDs, 0 SdLazy, 117 SolverSat, 19 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 13.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 75 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=3, 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, 5 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 14 NumberOfFragments, 26 HoareAnnotationTreeSize, 4 FomulaSimplifications, 183 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 35 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 80 NumberOfCodeBlocks, 80 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 75 ConstructedInterpolants, 0 QuantifiedInterpolants, 4623 SizeOfPredicates, 25 NumberOfNonLiveVariables, 344 ConjunctsInSsa, 50 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 3/12 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...