./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-lit/afnp2014.i --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_13b5f730-fcfb-4641-b107-29c5bc2a52c6/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_13b5f730-fcfb-4641-b107-29c5bc2a52c6/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_13b5f730-fcfb-4641-b107-29c5bc2a52c6/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_13b5f730-fcfb-4641-b107-29c5bc2a52c6/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-lit/afnp2014.i -s /tmp/vcloud-vcloud-master/worker/run_dir_13b5f730-fcfb-4641-b107-29c5bc2a52c6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_13b5f730-fcfb-4641-b107-29c5bc2a52c6/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 47b2b831be7ca2da97cc2b93acc9fcef98786cfa ......................................................................................................................................................................................................................................................................................................................................................................................................................... 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 20:20:16,934 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:20:16,947 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:20:17,003 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:20:17,004 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:20:17,006 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:20:17,008 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:20:17,011 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:20:17,014 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:20:17,016 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:20:17,018 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:20:17,020 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:20:17,020 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:20:17,022 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:20:17,024 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:20:17,026 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:20:17,028 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:20:17,030 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:20:17,033 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:20:17,036 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:20:17,039 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:20:17,041 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:20:17,043 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:20:17,044 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:20:17,049 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:20:17,049 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:20:17,050 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:20:17,051 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:20:17,052 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:20:17,054 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:20:17,054 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:20:17,055 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:20:17,057 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:20:17,058 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:20:17,060 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:20:17,061 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:20:17,062 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:20:17,062 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:20:17,063 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:20:17,064 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:20:17,065 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:20:17,067 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_13b5f730-fcfb-4641-b107-29c5bc2a52c6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 20:20:17,099 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:20:17,101 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:20:17,104 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:20:17,106 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:20:17,106 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:20:17,107 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:20:17,107 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 20:20:17,107 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 20:20:17,108 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 20:20:17,108 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:20:17,109 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 20:20:17,110 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 20:20:17,110 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 20:20:17,110 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 20:20:17,110 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:20:17,110 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:20:17,110 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 20:20:17,111 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:20:17,111 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:20:17,111 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 20:20:17,111 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 20:20:17,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:20:17,111 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:20:17,111 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 20:20:17,112 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 20:20:17,112 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 20:20:17,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 20:20:17,112 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 20:20:17,112 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:20:17,112 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_13b5f730-fcfb-4641-b107-29c5bc2a52c6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_13b5f730-fcfb-4641-b107-29c5bc2a52c6/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 47b2b831be7ca2da97cc2b93acc9fcef98786cfa [2020-11-29 20:20:17,515 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:20:17,561 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:20:17,567 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:20:17,569 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:20:17,571 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:20:17,573 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_13b5f730-fcfb-4641-b107-29c5bc2a52c6/bin/uautomizer/../../sv-benchmarks/c/loop-lit/afnp2014.i [2020-11-29 20:20:17,697 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_13b5f730-fcfb-4641-b107-29c5bc2a52c6/bin/uautomizer/data/93aebb8b4/08411c4570924d4e9ebb536b849df490/FLAGcb9c037ed [2020-11-29 20:20:18,359 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:20:18,360 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_13b5f730-fcfb-4641-b107-29c5bc2a52c6/sv-benchmarks/c/loop-lit/afnp2014.i [2020-11-29 20:20:18,367 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_13b5f730-fcfb-4641-b107-29c5bc2a52c6/bin/uautomizer/data/93aebb8b4/08411c4570924d4e9ebb536b849df490/FLAGcb9c037ed [2020-11-29 20:20:18,761 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_13b5f730-fcfb-4641-b107-29c5bc2a52c6/bin/uautomizer/data/93aebb8b4/08411c4570924d4e9ebb536b849df490 [2020-11-29 20:20:18,771 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:20:18,773 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:20:18,780 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:20:18,780 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:20:18,784 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:20:18,786 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:20:18" (1/1) ... [2020-11-29 20:20:18,788 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e1579ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:20:18, skipping insertion in model container [2020-11-29 20:20:18,789 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:20:18" (1/1) ... [2020-11-29 20:20:18,798 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:20:18,823 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:20:19,042 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:20:19,061 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:20:19,080 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:20:19,099 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:20:19,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:20:19 WrapperNode [2020-11-29 20:20:19,099 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:20:19,101 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:20:19,101 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:20:19,101 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:20:19,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:20:19" (1/1) ... [2020-11-29 20:20:19,118 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:20:19" (1/1) ... [2020-11-29 20:20:19,136 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:20:19,137 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:20:19,137 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:20:19,137 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:20:19,147 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:20:19" (1/1) ... [2020-11-29 20:20:19,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:20:19" (1/1) ... [2020-11-29 20:20:19,148 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:20:19" (1/1) ... [2020-11-29 20:20:19,149 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:20:19" (1/1) ... [2020-11-29 20:20:19,153 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:20:19" (1/1) ... [2020-11-29 20:20:19,157 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:20:19" (1/1) ... [2020-11-29 20:20:19,158 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:20:19" (1/1) ... [2020-11-29 20:20:19,160 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:20:19,161 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:20:19,162 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:20:19,162 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:20:19,177 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:20:19" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_13b5f730-fcfb-4641-b107-29c5bc2a52c6/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 20:20:19,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 20:20:19,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 20:20:19,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:20:19,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:20:19,529 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:20:19,530 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-29 20:20:19,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:20:19 BoogieIcfgContainer [2020-11-29 20:20:19,532 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:20:19,550 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 20:20:19,550 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 20:20:19,560 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 20:20:19,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 08:20:18" (1/3) ... [2020-11-29 20:20:19,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e5fc598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:20:19, skipping insertion in model container [2020-11-29 20:20:19,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:20:19" (2/3) ... [2020-11-29 20:20:19,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e5fc598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:20:19, skipping insertion in model container [2020-11-29 20:20:19,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:20:19" (3/3) ... [2020-11-29 20:20:19,565 INFO L111 eAbstractionObserver]: Analyzing ICFG afnp2014.i [2020-11-29 20:20:19,580 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 20:20:19,585 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 20:20:19,601 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 20:20:19,654 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 20:20:19,654 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 20:20:19,655 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 20:20:19,655 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:20:19,655 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:20:19,655 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 20:20:19,655 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:20:19,656 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 20:20:19,698 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-11-29 20:20:19,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 20:20:19,705 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:20:19,706 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:20:19,707 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:20:19,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:20:19,726 INFO L82 PathProgramCache]: Analyzing trace with hash 561225128, now seen corresponding path program 1 times [2020-11-29 20:20:19,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:20:19,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839883967] [2020-11-29 20:20:19,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:20:19,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:20:19,903 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 20:20:19,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839883967] [2020-11-29 20:20:19,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:20:19,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 20:20:19,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038490346] [2020-11-29 20:20:19,915 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 20:20:19,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:20:19,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 20:20:19,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 20:20:19,946 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 2 states. [2020-11-29 20:20:19,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:20:19,969 INFO L93 Difference]: Finished difference Result 26 states and 31 transitions. [2020-11-29 20:20:19,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 20:20:19,971 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-29 20:20:19,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:20:19,985 INFO L225 Difference]: With dead ends: 26 [2020-11-29 20:20:19,986 INFO L226 Difference]: Without dead ends: 11 [2020-11-29 20:20:20,003 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 20:20:20,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-11-29 20:20:20,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-11-29 20:20:20,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-29 20:20:20,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2020-11-29 20:20:20,064 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 8 [2020-11-29 20:20:20,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:20:20,066 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2020-11-29 20:20:20,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 20:20:20,067 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2020-11-29 20:20:20,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 20:20:20,069 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:20:20,069 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:20:20,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 20:20:20,070 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:20:20,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:20:20,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1037864689, now seen corresponding path program 1 times [2020-11-29 20:20:20,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:20:20,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800418429] [2020-11-29 20:20:20,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:20:20,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:20:20,351 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 20:20:20,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800418429] [2020-11-29 20:20:20,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:20:20,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:20:20,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665526183] [2020-11-29 20:20:20,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:20:20,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:20:20,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:20:20,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:20:20,359 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 4 states. [2020-11-29 20:20:20,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:20:20,420 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2020-11-29 20:20:20,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:20:20,421 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-29 20:20:20,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:20:20,422 INFO L225 Difference]: With dead ends: 20 [2020-11-29 20:20:20,422 INFO L226 Difference]: Without dead ends: 14 [2020-11-29 20:20:20,424 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:20:20,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-11-29 20:20:20,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-11-29 20:20:20,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-11-29 20:20:20,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2020-11-29 20:20:20,428 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 10 [2020-11-29 20:20:20,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:20:20,431 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2020-11-29 20:20:20,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:20:20,431 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2020-11-29 20:20:20,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 20:20:20,433 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:20:20,434 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:20:20,435 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 20:20:20,435 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:20:20,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:20:20,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1699528, now seen corresponding path program 1 times [2020-11-29 20:20:20,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:20:20,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348171860] [2020-11-29 20:20:20,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:20:20,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:20:20,581 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:20:20,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348171860] [2020-11-29 20:20:20,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404228309] [2020-11-29 20:20:20,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_13b5f730-fcfb-4641-b107-29c5bc2a52c6/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 20:20:20,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:20:20,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 20:20:20,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:20:20,837 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:20:20,843 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:20:20,880 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:20:20,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 20:20:20,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-11-29 20:20:20,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947611365] [2020-11-29 20:20:20,882 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 20:20:20,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:20:20,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 20:20:20,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-29 20:20:20,884 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 7 states. [2020-11-29 20:20:20,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:20:20,975 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2020-11-29 20:20:20,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 20:20:20,977 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-11-29 20:20:20,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:20:20,978 INFO L225 Difference]: With dead ends: 23 [2020-11-29 20:20:20,978 INFO L226 Difference]: Without dead ends: 17 [2020-11-29 20:20:20,979 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-11-29 20:20:20,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-11-29 20:20:20,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-11-29 20:20:20,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-29 20:20:20,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2020-11-29 20:20:20,985 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 13 [2020-11-29 20:20:20,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:20:20,989 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2020-11-29 20:20:20,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 20:20:20,990 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2020-11-29 20:20:20,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 20:20:20,992 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:20:20,992 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:20:21,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-29 20:20:21,221 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:20:21,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:20:21,222 INFO L82 PathProgramCache]: Analyzing trace with hash 464655471, now seen corresponding path program 2 times [2020-11-29 20:20:21,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:20:21,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010056471] [2020-11-29 20:20:21,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:20:21,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:20:21,374 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:20:21,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010056471] [2020-11-29 20:20:21,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594077854] [2020-11-29 20:20:21,375 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_13b5f730-fcfb-4641-b107-29c5bc2a52c6/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 20:20:21,422 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 20:20:21,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:20:21,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 20:20:21,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:20:21,506 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:20:21,510 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:20:21,552 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:20:21,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 20:20:21,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-11-29 20:20:21,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351956131] [2020-11-29 20:20:21,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 20:20:21,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:20:21,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 20:20:21,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-11-29 20:20:21,555 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand 8 states. [2020-11-29 20:20:21,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:20:21,622 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2020-11-29 20:20:21,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 20:20:21,623 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2020-11-29 20:20:21,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:20:21,623 INFO L225 Difference]: With dead ends: 17 [2020-11-29 20:20:21,623 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 20:20:21,624 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-11-29 20:20:21,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 20:20:21,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 20:20:21,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 20:20:21,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 20:20:21,625 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-11-29 20:20:21,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:20:21,626 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 20:20:21,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 20:20:21,626 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 20:20:21,626 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 20:20:21,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:20:21,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 20:20:21,913 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 20:20:21,914 INFO L274 CegarLoopResult]: For program point L27-1(line 27) no Hoare annotation was computed. [2020-11-29 20:20:21,914 INFO L274 CegarLoopResult]: For program point L27-3(lines 27 30) no Hoare annotation was computed. [2020-11-29 20:20:21,914 INFO L270 CegarLoopResult]: At program point L27-5(lines 27 30) the Hoare annotation is: (and (<= 0 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~x~0) (<= 1 ULTIMATE.start_main_~x~0)) [2020-11-29 20:20:21,914 INFO L274 CegarLoopResult]: For program point L27-6(lines 27 30) no Hoare annotation was computed. [2020-11-29 20:20:21,915 INFO L274 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-11-29 20:20:21,915 INFO L277 CegarLoopResult]: At program point L32(lines 24 33) the Hoare annotation is: true [2020-11-29 20:20:21,915 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 20:20:21,915 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 20:20:21,915 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 20:20:21,915 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-29 20:20:21,915 INFO L274 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-11-29 20:20:21,916 INFO L277 CegarLoopResult]: At program point L18-2(lines 17 22) the Hoare annotation is: true [2020-11-29 20:20:21,916 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-11-29 20:20:21,916 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-11-29 20:20:21,916 INFO L274 CegarLoopResult]: For program point L12-3(line 12) no Hoare annotation was computed. [2020-11-29 20:20:21,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 08:20:21 BoogieIcfgContainer [2020-11-29 20:20:21,939 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 20:20:21,940 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:20:21,941 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:20:21,941 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:20:21,942 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:20:19" (3/4) ... [2020-11-29 20:20:21,946 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 20:20:21,960 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-29 20:20:21,961 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 20:20:21,961 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 20:20:21,961 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 20:20:22,027 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_13b5f730-fcfb-4641-b107-29c5bc2a52c6/bin/uautomizer/witness.graphml [2020-11-29 20:20:22,028 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:20:22,031 INFO L168 Benchmark]: Toolchain (without parser) took 3255.68 ms. Allocated memory was 98.6 MB in the beginning and 138.4 MB in the end (delta: 39.8 MB). Free memory was 68.2 MB in the beginning and 70.2 MB in the end (delta: -2.0 MB). Peak memory consumption was 36.7 MB. Max. memory is 16.1 GB. [2020-11-29 20:20:22,031 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 98.6 MB. Free memory was 57.6 MB in the beginning and 57.6 MB in the end (delta: 37.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:20:22,032 INFO L168 Benchmark]: CACSL2BoogieTranslator took 320.25 ms. Allocated memory was 98.6 MB in the beginning and 138.4 MB in the end (delta: 39.8 MB). Free memory was 68.1 MB in the beginning and 115.3 MB in the end (delta: -47.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 20:20:22,033 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.03 ms. Allocated memory is still 138.4 MB. Free memory was 115.3 MB in the beginning and 114.3 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:20:22,034 INFO L168 Benchmark]: Boogie Preprocessor took 23.56 ms. Allocated memory is still 138.4 MB. Free memory was 113.8 MB in the beginning and 113.3 MB in the end (delta: 498.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:20:22,035 INFO L168 Benchmark]: RCFGBuilder took 370.97 ms. Allocated memory is still 138.4 MB. Free memory was 112.8 MB in the beginning and 102.2 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 20:20:22,035 INFO L168 Benchmark]: TraceAbstraction took 2390.17 ms. Allocated memory is still 138.4 MB. Free memory was 101.7 MB in the beginning and 72.9 MB in the end (delta: 28.8 MB). Peak memory consumption was 31.4 MB. Max. memory is 16.1 GB. [2020-11-29 20:20:22,036 INFO L168 Benchmark]: Witness Printer took 87.50 ms. Allocated memory is still 138.4 MB. Free memory was 72.9 MB in the beginning and 70.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:20:22,040 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 98.6 MB. Free memory was 57.6 MB in the beginning and 57.6 MB in the end (delta: 37.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 320.25 ms. Allocated memory was 98.6 MB in the beginning and 138.4 MB in the end (delta: 39.8 MB). Free memory was 68.1 MB in the beginning and 115.3 MB in the end (delta: -47.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.03 ms. Allocated memory is still 138.4 MB. Free memory was 115.3 MB in the beginning and 114.3 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.56 ms. Allocated memory is still 138.4 MB. Free memory was 113.8 MB in the beginning and 113.3 MB in the end (delta: 498.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 370.97 ms. Allocated memory is still 138.4 MB. Free memory was 112.8 MB in the beginning and 102.2 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2390.17 ms. Allocated memory is still 138.4 MB. Free memory was 101.7 MB in the beginning and 72.9 MB in the end (delta: 28.8 MB). Peak memory consumption was 31.4 MB. Max. memory is 16.1 GB. * Witness Printer took 87.50 ms. Allocated memory is still 138.4 MB. Free memory was 72.9 MB in the beginning and 70.2 MB in the end (delta: 2.7 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: 12]: 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: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: (0 <= y && y <= x) && 1 <= x - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.1s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 39 SDtfs, 14 SDslu, 56 SDs, 0 SdLazy, 33 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 6 NumberOfFragments, 12 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 11 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 76 NumberOfCodeBlocks, 76 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 70 ConstructedInterpolants, 0 QuantifiedInterpolants, 2398 SizeOfPredicates, 8 NumberOfNonLiveVariables, 118 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 0/24 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...