./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/heavy-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_ff168381-bce9-483a-9f25-2713eb0c554e/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ff168381-bce9-483a-9f25-2713eb0c554e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ff168381-bce9-483a-9f25-2713eb0c554e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ff168381-bce9-483a-9f25-2713eb0c554e/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/heavy-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ff168381-bce9-483a-9f25-2713eb0c554e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ff168381-bce9-483a-9f25-2713eb0c554e/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 12cc72c171310a5d1c1c1ed79b09d06400e5b2d9 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 19:07:01,278 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:07:01,281 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:07:01,357 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:07:01,365 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:07:01,370 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:07:01,373 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:07:01,378 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:07:01,384 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:07:01,386 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:07:01,388 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:07:01,392 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:07:01,393 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:07:01,400 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:07:01,402 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:07:01,405 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:07:01,406 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:07:01,410 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:07:01,416 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:07:01,422 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:07:01,425 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:07:01,427 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:07:01,429 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:07:01,431 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:07:01,443 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:07:01,443 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:07:01,444 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:07:01,446 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:07:01,447 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:07:01,448 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:07:01,449 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:07:01,450 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:07:01,453 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:07:01,454 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:07:01,455 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:07:01,456 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:07:01,457 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:07:01,457 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:07:01,457 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:07:01,458 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:07:01,459 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:07:01,462 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ff168381-bce9-483a-9f25-2713eb0c554e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 19:07:01,508 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:07:01,509 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:07:01,511 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:07:01,512 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:07:01,513 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:07:01,513 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:07:01,514 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 19:07:01,514 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:07:01,514 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 19:07:01,515 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:07:01,516 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 19:07:01,516 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 19:07:01,517 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 19:07:01,517 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 19:07:01,517 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:07:01,517 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:07:01,518 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 19:07:01,518 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:07:01,518 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:07:01,520 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 19:07:01,520 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 19:07:01,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:07:01,527 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:07:01,528 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 19:07:01,528 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 19:07:01,530 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 19:07:01,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 19:07:01,530 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 19:07:01,531 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:07:01,531 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_ff168381-bce9-483a-9f25-2713eb0c554e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ff168381-bce9-483a-9f25-2713eb0c554e/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 12cc72c171310a5d1c1c1ed79b09d06400e5b2d9 [2020-11-29 19:07:01,839 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:07:01,868 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:07:01,871 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:07:01,872 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:07:01,873 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:07:01,874 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ff168381-bce9-483a-9f25-2713eb0c554e/bin/uautomizer/../../sv-benchmarks/c/loops/heavy-2.c [2020-11-29 19:07:01,979 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ff168381-bce9-483a-9f25-2713eb0c554e/bin/uautomizer/data/e052f73ff/5adcf2abb40242d1b70914f9ce90ab00/FLAGc5ef0b014 [2020-11-29 19:07:02,430 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:07:02,431 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ff168381-bce9-483a-9f25-2713eb0c554e/sv-benchmarks/c/loops/heavy-2.c [2020-11-29 19:07:02,439 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ff168381-bce9-483a-9f25-2713eb0c554e/bin/uautomizer/data/e052f73ff/5adcf2abb40242d1b70914f9ce90ab00/FLAGc5ef0b014 [2020-11-29 19:07:02,828 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ff168381-bce9-483a-9f25-2713eb0c554e/bin/uautomizer/data/e052f73ff/5adcf2abb40242d1b70914f9ce90ab00 [2020-11-29 19:07:02,831 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:07:02,832 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:07:02,835 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:07:02,836 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:07:02,840 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:07:02,841 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:07:02" (1/1) ... [2020-11-29 19:07:02,843 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@585a072a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:07:02, skipping insertion in model container [2020-11-29 19:07:02,843 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:07:02" (1/1) ... [2020-11-29 19:07:02,851 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:07:02,864 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:07:03,073 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:07:03,129 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:07:03,148 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:07:03,232 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:07:03,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:07:03 WrapperNode [2020-11-29 19:07:03,235 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:07:03,236 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:07:03,236 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:07:03,237 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:07:03,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:07:03" (1/1) ... [2020-11-29 19:07:03,271 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:07:03" (1/1) ... [2020-11-29 19:07:03,303 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:07:03,304 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:07:03,304 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:07:03,304 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:07:03,314 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:07:03" (1/1) ... [2020-11-29 19:07:03,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:07:03" (1/1) ... [2020-11-29 19:07:03,316 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:07:03" (1/1) ... [2020-11-29 19:07:03,317 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:07:03" (1/1) ... [2020-11-29 19:07:03,324 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:07:03" (1/1) ... [2020-11-29 19:07:03,330 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:07:03" (1/1) ... [2020-11-29 19:07:03,332 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:07:03" (1/1) ... [2020-11-29 19:07:03,335 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:07:03,336 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:07:03,337 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:07:03,337 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:07:03,339 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:07:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ff168381-bce9-483a-9f25-2713eb0c554e/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 19:07:03,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 19:07:03,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:07:03,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:07:03,426 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 19:07:03,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 19:07:03,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-11-29 19:07:03,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 19:07:03,766 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:07:03,766 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-29 19:07:03,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:07:03 BoogieIcfgContainer [2020-11-29 19:07:03,768 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:07:03,770 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 19:07:03,770 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 19:07:03,773 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 19:07:03,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:07:02" (1/3) ... [2020-11-29 19:07:03,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65b1c4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:07:03, skipping insertion in model container [2020-11-29 19:07:03,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:07:03" (2/3) ... [2020-11-29 19:07:03,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65b1c4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:07:03, skipping insertion in model container [2020-11-29 19:07:03,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:07:03" (3/3) ... [2020-11-29 19:07:03,776 INFO L111 eAbstractionObserver]: Analyzing ICFG heavy-2.c [2020-11-29 19:07:03,786 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 19:07:03,791 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 19:07:03,802 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 19:07:03,828 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 19:07:03,828 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 19:07:03,829 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 19:07:03,829 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:07:03,829 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:07:03,829 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 19:07:03,829 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:07:03,829 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 19:07:03,844 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-11-29 19:07:03,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-29 19:07:03,850 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:07:03,851 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-29 19:07:03,852 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:07:03,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:07:03,857 INFO L82 PathProgramCache]: Analyzing trace with hash 28726599, now seen corresponding path program 1 times [2020-11-29 19:07:03,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:07:03,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941569908] [2020-11-29 19:07:03,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:07:03,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:07:04,010 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 19:07:04,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941569908] [2020-11-29 19:07:04,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:07:04,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 19:07:04,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539933239] [2020-11-29 19:07:04,018 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 19:07:04,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:07:04,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 19:07:04,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 19:07:04,036 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 2 states. [2020-11-29 19:07:04,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:07:04,053 INFO L93 Difference]: Finished difference Result 27 states and 39 transitions. [2020-11-29 19:07:04,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 19:07:04,054 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-11-29 19:07:04,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:07:04,063 INFO L225 Difference]: With dead ends: 27 [2020-11-29 19:07:04,063 INFO L226 Difference]: Without dead ends: 11 [2020-11-29 19:07:04,066 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 [2020-11-29 19:07:04,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-11-29 19:07:04,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-11-29 19:07:04,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-29 19:07:04,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2020-11-29 19:07:04,101 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 5 [2020-11-29 19:07:04,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:07:04,101 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2020-11-29 19:07:04,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 19:07:04,101 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2020-11-29 19:07:04,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-29 19:07:04,102 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:07:04,102 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-29 19:07:04,102 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 19:07:04,103 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:07:04,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:07:04,104 INFO L82 PathProgramCache]: Analyzing trace with hash 28697769, now seen corresponding path program 1 times [2020-11-29 19:07:04,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:07:04,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449711950] [2020-11-29 19:07:04,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:07:04,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:07:04,185 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 19:07:04,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449711950] [2020-11-29 19:07:04,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:07:04,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:07:04,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385919913] [2020-11-29 19:07:04,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:07:04,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:07:04,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:07:04,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:07:04,189 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand 3 states. [2020-11-29 19:07:04,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:07:04,241 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2020-11-29 19:07:04,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:07:04,242 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-11-29 19:07:04,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:07:04,242 INFO L225 Difference]: With dead ends: 20 [2020-11-29 19:07:04,243 INFO L226 Difference]: Without dead ends: 17 [2020-11-29 19:07:04,244 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:07:04,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-11-29 19:07:04,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 12. [2020-11-29 19:07:04,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-29 19:07:04,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2020-11-29 19:07:04,249 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 5 [2020-11-29 19:07:04,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:07:04,249 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2020-11-29 19:07:04,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:07:04,250 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2020-11-29 19:07:04,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 19:07:04,250 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:07:04,250 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:07:04,251 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 19:07:04,251 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:07:04,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:07:04,252 INFO L82 PathProgramCache]: Analyzing trace with hash 269702257, now seen corresponding path program 1 times [2020-11-29 19:07:04,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:07:04,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129558973] [2020-11-29 19:07:04,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:07:04,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:07:04,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:07:04,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129558973] [2020-11-29 19:07:04,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:07:04,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:07:04,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165020081] [2020-11-29 19:07:04,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:07:04,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:07:04,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:07:04,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:07:04,310 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand 3 states. [2020-11-29 19:07:04,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:07:04,376 INFO L93 Difference]: Finished difference Result 25 states and 31 transitions. [2020-11-29 19:07:04,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:07:04,378 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-29 19:07:04,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:07:04,379 INFO L225 Difference]: With dead ends: 25 [2020-11-29 19:07:04,379 INFO L226 Difference]: Without dead ends: 16 [2020-11-29 19:07:04,379 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:07:04,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-29 19:07:04,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 13. [2020-11-29 19:07:04,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-11-29 19:07:04,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2020-11-29 19:07:04,383 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 8 [2020-11-29 19:07:04,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:07:04,384 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2020-11-29 19:07:04,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:07:04,384 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2020-11-29 19:07:04,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 19:07:04,385 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:07:04,385 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:07:04,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 19:07:04,385 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:07:04,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:07:04,386 INFO L82 PathProgramCache]: Analyzing trace with hash 904437765, now seen corresponding path program 1 times [2020-11-29 19:07:04,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:07:04,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68007948] [2020-11-29 19:07:04,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:07:04,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:07:04,456 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:07:04,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68007948] [2020-11-29 19:07:04,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:07:04,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:07:04,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721529121] [2020-11-29 19:07:04,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:07:04,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:07:04,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:07:04,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:07:04,459 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand 3 states. [2020-11-29 19:07:04,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:07:04,491 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions. [2020-11-29 19:07:04,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:07:04,492 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-11-29 19:07:04,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:07:04,492 INFO L225 Difference]: With dead ends: 25 [2020-11-29 19:07:04,493 INFO L226 Difference]: Without dead ends: 15 [2020-11-29 19:07:04,493 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:07:04,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-11-29 19:07:04,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2020-11-29 19:07:04,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-11-29 19:07:04,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2020-11-29 19:07:04,497 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 11 [2020-11-29 19:07:04,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:07:04,497 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2020-11-29 19:07:04,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:07:04,497 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2020-11-29 19:07:04,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 19:07:04,498 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:07:04,498 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:07:04,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 19:07:04,499 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:07:04,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:07:04,499 INFO L82 PathProgramCache]: Analyzing trace with hash -2012164797, now seen corresponding path program 1 times [2020-11-29 19:07:04,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:07:04,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547416211] [2020-11-29 19:07:04,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:07:04,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:07:04,673 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:07:04,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547416211] [2020-11-29 19:07:04,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828071893] [2020-11-29 19:07:04,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ff168381-bce9-483a-9f25-2713eb0c554e/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 19:07:04,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:07:04,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 19:07:04,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:07:04,770 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:07:04,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:07:04,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-11-29 19:07:04,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043156429] [2020-11-29 19:07:04,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 19:07:04,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:07:04,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 19:07:04,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:07:04,773 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 5 states. [2020-11-29 19:07:04,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:07:04,821 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2020-11-29 19:07:04,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:07:04,823 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-29 19:07:04,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:07:04,824 INFO L225 Difference]: With dead ends: 28 [2020-11-29 19:07:04,824 INFO L226 Difference]: Without dead ends: 17 [2020-11-29 19:07:04,824 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:07:04,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-11-29 19:07:04,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2020-11-29 19:07:04,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-29 19:07:04,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2020-11-29 19:07:04,828 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 13 [2020-11-29 19:07:04,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:07:04,828 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-11-29 19:07:04,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 19:07:04,829 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-11-29 19:07:04,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-29 19:07:04,829 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:07:04,829 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:07:05,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:07:05,030 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:07:05,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:07:05,031 INFO L82 PathProgramCache]: Analyzing trace with hash -253582591, now seen corresponding path program 2 times [2020-11-29 19:07:05,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:07:05,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040094179] [2020-11-29 19:07:05,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:07:05,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:07:05,185 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:07:05,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040094179] [2020-11-29 19:07:05,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622720906] [2020-11-29 19:07:05,185 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ff168381-bce9-483a-9f25-2713eb0c554e/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 [2020-11-29 19:07:05,247 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-11-29 19:07:05,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:07:05,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-29 19:07:05,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:07:05,265 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-29 19:07:05,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-29 19:07:05,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2020-11-29 19:07:05,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784483743] [2020-11-29 19:07:05,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:07:05,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:07:05,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:07:05,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:07:05,267 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 3 states. [2020-11-29 19:07:05,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:07:05,269 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2020-11-29 19:07:05,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:07:05,270 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-11-29 19:07:05,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:07:05,273 INFO L225 Difference]: With dead ends: 16 [2020-11-29 19:07:05,273 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 19:07:05,275 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:07:05,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 19:07:05,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 19:07:05,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 19:07:05,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 19:07:05,282 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-11-29 19:07:05,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:07:05,282 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 19:07:05,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:07:05,282 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 19:07:05,283 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 19:07:05,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:07:05,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 19:07:05,515 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 19:07:05,515 INFO L274 CegarLoopResult]: For program point L13-2(lines 13 15) no Hoare annotation was computed. [2020-11-29 19:07:05,516 INFO L270 CegarLoopResult]: At program point L13-3(lines 13 15) the Hoare annotation is: (= ULTIMATE.start_main_~a~0 1) [2020-11-29 19:07:05,516 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-29 19:07:05,516 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 19:07:05,516 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 19:07:05,516 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 19:07:05,516 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-29 19:07:05,516 INFO L277 CegarLoopResult]: At program point L22(lines 7 23) the Hoare annotation is: true [2020-11-29 19:07:05,516 INFO L270 CegarLoopResult]: At program point L18(lines 8 23) the Hoare annotation is: false [2020-11-29 19:07:05,516 INFO L274 CegarLoopResult]: For program point L14-2(lines 14 15) no Hoare annotation was computed. [2020-11-29 19:07:05,516 INFO L270 CegarLoopResult]: At program point L14-3(lines 14 15) the Hoare annotation is: (= ULTIMATE.start_main_~a~0 1) [2020-11-29 19:07:05,517 INFO L274 CegarLoopResult]: For program point L12-2(lines 12 15) no Hoare annotation was computed. [2020-11-29 19:07:05,517 INFO L270 CegarLoopResult]: At program point L12-3(lines 12 15) the Hoare annotation is: (= ULTIMATE.start_main_~a~0 1) [2020-11-29 19:07:05,517 INFO L274 CegarLoopResult]: For program point L12-4(lines 8 23) no Hoare annotation was computed. [2020-11-29 19:07:05,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 07:07:05 BoogieIcfgContainer [2020-11-29 19:07:05,538 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 19:07:05,539 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:07:05,539 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:07:05,539 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:07:05,540 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:07:03" (3/4) ... [2020-11-29 19:07:05,544 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 19:07:05,558 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-11-29 19:07:05,558 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 19:07:05,558 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-29 19:07:05,559 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 19:07:05,623 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ff168381-bce9-483a-9f25-2713eb0c554e/bin/uautomizer/witness.graphml [2020-11-29 19:07:05,632 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:07:05,634 INFO L168 Benchmark]: Toolchain (without parser) took 2800.53 ms. Allocated memory was 88.1 MB in the beginning and 113.2 MB in the end (delta: 25.2 MB). Free memory was 56.0 MB in the beginning and 77.8 MB in the end (delta: -21.8 MB). Peak memory consumption was 4.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:07:05,635 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 88.1 MB. Free memory was 46.7 MB in the beginning and 46.6 MB in the end (delta: 56.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:07:05,639 INFO L168 Benchmark]: CACSL2BoogieTranslator took 399.93 ms. Allocated memory was 88.1 MB in the beginning and 113.2 MB in the end (delta: 25.2 MB). Free memory was 55.8 MB in the beginning and 90.4 MB in the end (delta: -34.6 MB). Peak memory consumption was 22.8 MB. Max. memory is 16.1 GB. [2020-11-29 19:07:05,640 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.96 ms. Allocated memory is still 113.2 MB. Free memory was 90.4 MB in the beginning and 88.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:07:05,641 INFO L168 Benchmark]: Boogie Preprocessor took 31.62 ms. Allocated memory is still 113.2 MB. Free memory was 88.8 MB in the beginning and 87.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:07:05,641 INFO L168 Benchmark]: RCFGBuilder took 431.78 ms. Allocated memory is still 113.2 MB. Free memory was 87.7 MB in the beginning and 73.7 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-29 19:07:05,642 INFO L168 Benchmark]: TraceAbstraction took 1768.73 ms. Allocated memory is still 113.2 MB. Free memory was 73.1 MB in the beginning and 79.9 MB in the end (delta: -6.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:07:05,642 INFO L168 Benchmark]: Witness Printer took 92.89 ms. Allocated memory is still 113.2 MB. Free memory was 79.9 MB in the beginning and 77.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:07:05,647 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 88.1 MB. Free memory was 46.7 MB in the beginning and 46.6 MB in the end (delta: 56.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 399.93 ms. Allocated memory was 88.1 MB in the beginning and 113.2 MB in the end (delta: 25.2 MB). Free memory was 55.8 MB in the beginning and 90.4 MB in the end (delta: -34.6 MB). Peak memory consumption was 22.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 66.96 ms. Allocated memory is still 113.2 MB. Free memory was 90.4 MB in the beginning and 88.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.62 ms. Allocated memory is still 113.2 MB. Free memory was 88.8 MB in the beginning and 87.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 431.78 ms. Allocated memory is still 113.2 MB. Free memory was 87.7 MB in the beginning and 73.7 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1768.73 ms. Allocated memory is still 113.2 MB. Free memory was 73.1 MB in the beginning and 79.9 MB in the end (delta: -6.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 92.89 ms. Allocated memory is still 113.2 MB. Free memory was 79.9 MB in the beginning and 77.8 MB in the end (delta: 2.1 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: 13]: Loop Invariant Derived loop invariant: a == 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: a == 1 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 8]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: a == 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.6s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 69 SDtfs, 15 SDslu, 40 SDs, 0 SdLazy, 36 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 10 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 13 NumberOfFragments, 11 HoareAnnotationTreeSize, 5 FomulaSimplifications, 31 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 85 NumberOfCodeBlocks, 75 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 77 ConstructedInterpolants, 0 QuantifiedInterpolants, 1843 SizeOfPredicates, 2 NumberOfNonLiveVariables, 130 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 15/21 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...