./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 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_af0823a9-6e24-4282-8f97-f82516b7b016/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_af0823a9-6e24-4282-8f97-f82516b7b016/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_af0823a9-6e24-4282-8f97-f82516b7b016/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_af0823a9-6e24-4282-8f97-f82516b7b016/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-lit/afnp2014.i -s /tmp/vcloud-vcloud-master/worker/run_dir_af0823a9-6e24-4282-8f97-f82516b7b016/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_af0823a9-6e24-4282-8f97-f82516b7b016/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d51c6cc706e0ce829ba547908cd819c55d1b3081 ...................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 08:18:37,194 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 08:18:37,195 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 08:18:37,210 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 08:18:37,210 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 08:18:37,212 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 08:18:37,213 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 08:18:37,222 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 08:18:37,226 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 08:18:37,230 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 08:18:37,231 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 08:18:37,232 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 08:18:37,232 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 08:18:37,234 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 08:18:37,235 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 08:18:37,237 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 08:18:37,237 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 08:18:37,238 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 08:18:37,244 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 08:18:37,246 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 08:18:37,247 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 08:18:37,253 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 08:18:37,256 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 08:18:37,257 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 08:18:37,260 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 08:18:37,260 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 08:18:37,260 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 08:18:37,262 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 08:18:37,262 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 08:18:37,264 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 08:18:37,264 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 08:18:37,265 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 08:18:37,266 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 08:18:37,266 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 08:18:37,267 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 08:18:37,268 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 08:18:37,268 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 08:18:37,268 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 08:18:37,269 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 08:18:37,270 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 08:18:37,271 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 08:18:37,272 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_af0823a9-6e24-4282-8f97-f82516b7b016/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 08:18:37,295 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 08:18:37,304 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 08:18:37,305 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 08:18:37,306 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 08:18:37,306 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 08:18:37,306 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 08:18:37,306 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 08:18:37,307 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 08:18:37,307 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 08:18:37,307 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 08:18:37,307 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 08:18:37,307 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 08:18:37,308 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 08:18:37,309 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 08:18:37,309 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 08:18:37,309 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 08:18:37,309 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 08:18:37,310 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 08:18:37,310 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 08:18:37,310 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 08:18:37,310 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 08:18:37,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 08:18:37,311 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 08:18:37,311 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 08:18:37,311 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 08:18:37,311 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 08:18:37,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 08:18:37,312 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 08:18:37,312 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_af0823a9-6e24-4282-8f97-f82516b7b016/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(__VERIFIER_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 -> d51c6cc706e0ce829ba547908cd819c55d1b3081 [2019-11-20 08:18:37,472 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 08:18:37,487 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 08:18:37,490 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 08:18:37,491 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 08:18:37,492 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 08:18:37,493 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_af0823a9-6e24-4282-8f97-f82516b7b016/bin/uautomizer/../../sv-benchmarks/c/loop-lit/afnp2014.i [2019-11-20 08:18:37,553 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_af0823a9-6e24-4282-8f97-f82516b7b016/bin/uautomizer/data/e843c48f3/6ef5694dec3240518d0c51e8f7ea9127/FLAG534d4bc0f [2019-11-20 08:18:37,935 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 08:18:37,936 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_af0823a9-6e24-4282-8f97-f82516b7b016/sv-benchmarks/c/loop-lit/afnp2014.i [2019-11-20 08:18:37,941 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_af0823a9-6e24-4282-8f97-f82516b7b016/bin/uautomizer/data/e843c48f3/6ef5694dec3240518d0c51e8f7ea9127/FLAG534d4bc0f [2019-11-20 08:18:37,951 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_af0823a9-6e24-4282-8f97-f82516b7b016/bin/uautomizer/data/e843c48f3/6ef5694dec3240518d0c51e8f7ea9127 [2019-11-20 08:18:37,954 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 08:18:37,955 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 08:18:37,956 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 08:18:37,956 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 08:18:37,962 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 08:18:37,963 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:18:37" (1/1) ... [2019-11-20 08:18:37,965 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5370413 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:18:37, skipping insertion in model container [2019-11-20 08:18:37,966 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:18:37" (1/1) ... [2019-11-20 08:18:37,978 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 08:18:37,993 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 08:18:38,163 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 08:18:38,167 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 08:18:38,240 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 08:18:38,254 INFO L192 MainTranslator]: Completed translation [2019-11-20 08:18:38,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:18:38 WrapperNode [2019-11-20 08:18:38,254 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 08:18:38,255 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 08:18:38,256 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 08:18:38,256 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 08:18:38,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:18:38" (1/1) ... [2019-11-20 08:18:38,269 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:18:38" (1/1) ... [2019-11-20 08:18:38,283 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 08:18:38,284 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 08:18:38,284 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 08:18:38,284 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 08:18:38,292 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:18:38" (1/1) ... [2019-11-20 08:18:38,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:18:38" (1/1) ... [2019-11-20 08:18:38,293 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:18:38" (1/1) ... [2019-11-20 08:18:38,293 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:18:38" (1/1) ... [2019-11-20 08:18:38,295 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:18:38" (1/1) ... [2019-11-20 08:18:38,299 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:18:38" (1/1) ... [2019-11-20 08:18:38,300 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:18:38" (1/1) ... [2019-11-20 08:18:38,301 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 08:18:38,302 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 08:18:38,302 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 08:18:38,302 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 08:18:38,303 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:18:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_af0823a9-6e24-4282-8f97-f82516b7b016/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 [2019-11-20 08:18:38,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 08:18:38,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 08:18:38,544 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 08:18:38,545 INFO L285 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-20 08:18:38,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:18:38 BoogieIcfgContainer [2019-11-20 08:18:38,546 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 08:18:38,547 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 08:18:38,547 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 08:18:38,550 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 08:18:38,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:18:37" (1/3) ... [2019-11-20 08:18:38,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bde199a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:18:38, skipping insertion in model container [2019-11-20 08:18:38,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:18:38" (2/3) ... [2019-11-20 08:18:38,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bde199a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:18:38, skipping insertion in model container [2019-11-20 08:18:38,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:18:38" (3/3) ... [2019-11-20 08:18:38,557 INFO L109 eAbstractionObserver]: Analyzing ICFG afnp2014.i [2019-11-20 08:18:38,565 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 08:18:38,571 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-20 08:18:38,582 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-20 08:18:38,611 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 08:18:38,611 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 08:18:38,612 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 08:18:38,612 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 08:18:38,612 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 08:18:38,613 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 08:18:38,613 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 08:18:38,615 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 08:18:38,630 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2019-11-20 08:18:38,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-20 08:18:38,636 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 08:18:38,637 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-20 08:18:38,638 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 08:18:38,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 08:18:38,643 INFO L82 PathProgramCache]: Analyzing trace with hash 30139652, now seen corresponding path program 1 times [2019-11-20 08:18:38,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 08:18:38,653 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712885633] [2019-11-20 08:18:38,654 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 08:18:38,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 08:18:38,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 08:18:38,746 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712885633] [2019-11-20 08:18:38,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 08:18:38,747 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-20 08:18:38,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228992646] [2019-11-20 08:18:38,753 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-20 08:18:38,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 08:18:38,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-20 08:18:38,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-20 08:18:38,768 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 2 states. [2019-11-20 08:18:38,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 08:18:38,783 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2019-11-20 08:18:38,783 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-20 08:18:38,784 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2019-11-20 08:18:38,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 08:18:38,792 INFO L225 Difference]: With dead ends: 20 [2019-11-20 08:18:38,792 INFO L226 Difference]: Without dead ends: 8 [2019-11-20 08:18:38,795 INFO L630 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 [2019-11-20 08:18:38,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-11-20 08:18:38,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-11-20 08:18:38,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-20 08:18:38,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2019-11-20 08:18:38,823 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 5 [2019-11-20 08:18:38,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 08:18:38,824 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2019-11-20 08:18:38,824 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-20 08:18:38,824 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2019-11-20 08:18:38,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-20 08:18:38,825 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 08:18:38,825 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-20 08:18:38,825 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 08:18:38,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 08:18:38,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1484098869, now seen corresponding path program 1 times [2019-11-20 08:18:38,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 08:18:38,826 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145589975] [2019-11-20 08:18:38,826 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 08:18:38,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 08:18:38,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 08:18:38,908 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145589975] [2019-11-20 08:18:38,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 08:18:38,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-20 08:18:38,908 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870481595] [2019-11-20 08:18:38,909 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 08:18:38,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 08:18:38,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 08:18:38,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-20 08:18:38,910 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand 4 states. [2019-11-20 08:18:39,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 08:18:39,038 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2019-11-20 08:18:39,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 08:18:39,039 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-11-20 08:18:39,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 08:18:39,039 INFO L225 Difference]: With dead ends: 15 [2019-11-20 08:18:39,039 INFO L226 Difference]: Without dead ends: 11 [2019-11-20 08:18:39,040 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-20 08:18:39,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-11-20 08:18:39,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-11-20 08:18:39,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-20 08:18:39,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2019-11-20 08:18:39,043 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 7 [2019-11-20 08:18:39,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 08:18:39,043 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2019-11-20 08:18:39,043 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 08:18:39,044 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2019-11-20 08:18:39,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-20 08:18:39,044 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 08:18:39,044 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2019-11-20 08:18:39,044 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 08:18:39,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 08:18:39,045 INFO L82 PathProgramCache]: Analyzing trace with hash 935349177, now seen corresponding path program 1 times [2019-11-20 08:18:39,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 08:18:39,045 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340130828] [2019-11-20 08:18:39,045 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 08:18:39,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 08:18:39,093 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 08:18:39,093 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340130828] [2019-11-20 08:18:39,093 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958215826] [2019-11-20 08:18:39,093 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_af0823a9-6e24-4282-8f97-f82516b7b016/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 [2019-11-20 08:18:39,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 08:18:39,131 INFO L255 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-20 08:18:39,136 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 08:18:39,157 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 08:18:39,179 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 08:18:39,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 08:18:39,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-11-20 08:18:39,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027132439] [2019-11-20 08:18:39,180 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 08:18:39,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 08:18:39,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 08:18:39,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-20 08:18:39,181 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand 6 states. [2019-11-20 08:18:39,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 08:18:39,231 INFO L93 Difference]: Finished difference Result 18 states and 21 transitions. [2019-11-20 08:18:39,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 08:18:39,232 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-11-20 08:18:39,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 08:18:39,232 INFO L225 Difference]: With dead ends: 18 [2019-11-20 08:18:39,232 INFO L226 Difference]: Without dead ends: 14 [2019-11-20 08:18:39,233 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-20 08:18:39,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-20 08:18:39,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-11-20 08:18:39,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-20 08:18:39,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2019-11-20 08:18:39,236 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 10 [2019-11-20 08:18:39,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 08:18:39,236 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2019-11-20 08:18:39,236 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 08:18:39,236 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2019-11-20 08:18:39,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-20 08:18:39,237 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 08:18:39,237 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1] [2019-11-20 08:18:39,438 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 08:18:39,438 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 08:18:39,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 08:18:39,438 INFO L82 PathProgramCache]: Analyzing trace with hash 570926091, now seen corresponding path program 2 times [2019-11-20 08:18:39,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 08:18:39,439 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451362937] [2019-11-20 08:18:39,439 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 08:18:39,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 08:18:39,524 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 08:18:39,525 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451362937] [2019-11-20 08:18:39,525 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572251063] [2019-11-20 08:18:39,525 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_af0823a9-6e24-4282-8f97-f82516b7b016/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 [2019-11-20 08:18:39,574 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 08:18:39,574 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 08:18:39,575 INFO L255 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-20 08:18:39,576 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 08:18:39,604 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 08:18:39,625 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 08:18:39,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 08:18:39,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-11-20 08:18:39,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712872721] [2019-11-20 08:18:39,626 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-20 08:18:39,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 08:18:39,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-20 08:18:39,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-20 08:18:39,627 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand 8 states. [2019-11-20 08:18:39,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 08:18:39,665 INFO L93 Difference]: Finished difference Result 14 states and 17 transitions. [2019-11-20 08:18:39,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 08:18:39,665 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2019-11-20 08:18:39,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 08:18:39,666 INFO L225 Difference]: With dead ends: 14 [2019-11-20 08:18:39,666 INFO L226 Difference]: Without dead ends: 0 [2019-11-20 08:18:39,666 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2019-11-20 08:18:39,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-20 08:18:39,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-20 08:18:39,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-20 08:18:39,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-20 08:18:39,667 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2019-11-20 08:18:39,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 08:18:39,667 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 08:18:39,667 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-20 08:18:39,667 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-20 08:18:39,668 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-20 08:18:39,868 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 08:18:39,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-20 08:18:39,907 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-20 08:18:39,907 INFO L444 ceAbstractionStarter]: For program point L13-1(line 13) no Hoare annotation was computed. [2019-11-20 08:18:39,907 INFO L444 ceAbstractionStarter]: For program point L13-3(lines 13 16) no Hoare annotation was computed. [2019-11-20 08:18:39,907 INFO L440 ceAbstractionStarter]: At program point L13-5(lines 13 16) the Hoare annotation is: (and (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~x~0) (<= 1 ULTIMATE.start_main_~x~0) (<= 0 ULTIMATE.start_main_~y~0)) [2019-11-20 08:18:39,908 INFO L444 ceAbstractionStarter]: For program point L13-6(lines 13 16) no Hoare annotation was computed. [2019-11-20 08:18:39,908 INFO L444 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-20 08:18:39,908 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-20 08:18:39,908 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-20 08:18:39,908 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-20 08:18:39,908 INFO L447 ceAbstractionStarter]: At program point L18(lines 10 19) the Hoare annotation is: true [2019-11-20 08:18:39,908 INFO L444 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-20 08:18:39,908 INFO L447 ceAbstractionStarter]: At program point L4-2(lines 3 8) the Hoare annotation is: true [2019-11-20 08:18:39,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 08:18:39 BoogieIcfgContainer [2019-11-20 08:18:39,926 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 08:18:39,927 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 08:18:39,927 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 08:18:39,928 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 08:18:39,928 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:18:38" (3/4) ... [2019-11-20 08:18:39,933 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-20 08:18:39,944 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-11-20 08:18:39,945 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-20 08:18:39,987 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_af0823a9-6e24-4282-8f97-f82516b7b016/bin/uautomizer/witness.graphml [2019-11-20 08:18:39,987 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 08:18:39,989 INFO L168 Benchmark]: Toolchain (without parser) took 2033.66 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 165.2 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -115.9 MB). Peak memory consumption was 49.3 MB. Max. memory is 11.5 GB. [2019-11-20 08:18:39,990 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 08:18:39,990 INFO L168 Benchmark]: CACSL2BoogieTranslator took 298.89 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 165.2 MB). Free memory was 951.4 MB in the beginning and 1.2 GB in the end (delta: -207.5 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-11-20 08:18:39,991 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.37 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 08:18:39,991 INFO L168 Benchmark]: Boogie Preprocessor took 17.80 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 08:18:39,992 INFO L168 Benchmark]: RCFGBuilder took 244.20 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 11.5 GB. [2019-11-20 08:18:39,992 INFO L168 Benchmark]: TraceAbstraction took 1379.90 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 67.9 MB). Peak memory consumption was 67.9 MB. Max. memory is 11.5 GB. [2019-11-20 08:18:39,993 INFO L168 Benchmark]: Witness Printer took 60.15 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 08:18:39,996 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 298.89 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 165.2 MB). Free memory was 951.4 MB in the beginning and 1.2 GB in the end (delta: -207.5 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.37 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.80 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 244.20 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1379.90 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 67.9 MB). Peak memory consumption was 67.9 MB. Max. memory is 11.5 GB. * Witness Printer took 60.15 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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: 3]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: (y <= x && 1 <= x) && 0 <= y - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Result: SAFE, OverallTime: 1.3s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 29 SDtfs, 17 SDslu, 34 SDs, 0 SdLazy, 32 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred 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, 16 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 58 NumberOfCodeBlocks, 58 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 52 ConstructedInterpolants, 0 QuantifiedInterpolants, 1669 SizeOfPredicates, 8 NumberOfNonLiveVariables, 68 ConjunctsInSsa, 20 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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...