./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark34_conjunctive.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_8c54224e-ee44-4da7-a93a-1f9259bf645c/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_8c54224e-ee44-4da7-a93a-1f9259bf645c/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8c54224e-ee44-4da7-a93a-1f9259bf645c/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8c54224e-ee44-4da7-a93a-1f9259bf645c/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark34_conjunctive.i -s /tmp/vcloud-vcloud-master/worker/run_dir_8c54224e-ee44-4da7-a93a-1f9259bf645c/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8c54224e-ee44-4da7-a93a-1f9259bf645c/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 58313a706dc1d8f505ffe0e88ce66e9b5e9ea53a ...................................................................................................................................................................................................................................................................................................................................................................................................................... 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 18:36:09,218 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 18:36:09,220 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 18:36:09,301 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 18:36:09,302 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 18:36:09,309 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 18:36:09,312 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 18:36:09,317 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 18:36:09,321 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 18:36:09,338 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 18:36:09,339 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 18:36:09,342 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 18:36:09,343 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 18:36:09,348 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 18:36:09,350 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 18:36:09,352 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 18:36:09,354 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 18:36:09,359 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 18:36:09,364 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 18:36:09,374 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 18:36:09,377 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 18:36:09,379 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 18:36:09,383 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 18:36:09,384 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 18:36:09,396 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 18:36:09,396 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 18:36:09,397 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 18:36:09,400 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 18:36:09,401 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 18:36:09,402 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 18:36:09,403 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 18:36:09,404 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 18:36:09,407 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 18:36:09,409 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 18:36:09,410 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 18:36:09,411 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 18:36:09,412 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 18:36:09,412 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 18:36:09,413 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 18:36:09,414 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 18:36:09,416 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 18:36:09,419 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8c54224e-ee44-4da7-a93a-1f9259bf645c/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 18:36:09,474 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 18:36:09,474 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 18:36:09,477 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 18:36:09,477 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 18:36:09,477 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 18:36:09,478 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 18:36:09,478 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 18:36:09,479 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 18:36:09,479 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 18:36:09,479 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 18:36:09,481 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 18:36:09,481 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 18:36:09,481 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 18:36:09,482 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 18:36:09,482 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 18:36:09,482 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 18:36:09,482 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 18:36:09,483 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 18:36:09,483 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 18:36:09,483 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 18:36:09,484 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 18:36:09,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 18:36:09,484 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 18:36:09,485 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 18:36:09,485 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 18:36:09,485 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 18:36:09,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 18:36:09,486 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 18:36:09,486 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 18:36:09,487 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_8c54224e-ee44-4da7-a93a-1f9259bf645c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_8c54224e-ee44-4da7-a93a-1f9259bf645c/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 58313a706dc1d8f505ffe0e88ce66e9b5e9ea53a [2020-11-29 18:36:09,867 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 18:36:09,899 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 18:36:09,902 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 18:36:09,904 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 18:36:09,905 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 18:36:09,906 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8c54224e-ee44-4da7-a93a-1f9259bf645c/bin/uautomizer/../../sv-benchmarks/c/loop-zilu/benchmark34_conjunctive.i [2020-11-29 18:36:10,008 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8c54224e-ee44-4da7-a93a-1f9259bf645c/bin/uautomizer/data/011766dae/2b2ede6915374a16b893ad1c177501e5/FLAG7da5c119b [2020-11-29 18:36:10,513 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 18:36:10,514 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8c54224e-ee44-4da7-a93a-1f9259bf645c/sv-benchmarks/c/loop-zilu/benchmark34_conjunctive.i [2020-11-29 18:36:10,524 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8c54224e-ee44-4da7-a93a-1f9259bf645c/bin/uautomizer/data/011766dae/2b2ede6915374a16b893ad1c177501e5/FLAG7da5c119b [2020-11-29 18:36:10,891 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8c54224e-ee44-4da7-a93a-1f9259bf645c/bin/uautomizer/data/011766dae/2b2ede6915374a16b893ad1c177501e5 [2020-11-29 18:36:10,893 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 18:36:10,895 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 18:36:10,897 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 18:36:10,897 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 18:36:10,901 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 18:36:10,902 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:36:10" (1/1) ... [2020-11-29 18:36:10,904 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5abe1c87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:36:10, skipping insertion in model container [2020-11-29 18:36:10,905 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:36:10" (1/1) ... [2020-11-29 18:36:10,913 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 18:36:10,929 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 18:36:11,134 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:36:11,152 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 18:36:11,181 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:36:11,203 INFO L208 MainTranslator]: Completed translation [2020-11-29 18:36:11,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:36:11 WrapperNode [2020-11-29 18:36:11,205 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 18:36:11,207 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 18:36:11,208 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 18:36:11,208 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 18:36:11,217 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:36:11" (1/1) ... [2020-11-29 18:36:11,228 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:36:11" (1/1) ... [2020-11-29 18:36:11,255 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 18:36:11,256 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 18:36:11,257 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 18:36:11,258 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 18:36:11,268 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:36:11" (1/1) ... [2020-11-29 18:36:11,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:36:11" (1/1) ... [2020-11-29 18:36:11,269 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:36:11" (1/1) ... [2020-11-29 18:36:11,269 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:36:11" (1/1) ... [2020-11-29 18:36:11,273 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:36:11" (1/1) ... [2020-11-29 18:36:11,277 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:36:11" (1/1) ... [2020-11-29 18:36:11,279 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:36:11" (1/1) ... [2020-11-29 18:36:11,281 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 18:36:11,282 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 18:36:11,282 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 18:36:11,282 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 18:36:11,283 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:36:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8c54224e-ee44-4da7-a93a-1f9259bf645c/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 18:36:11,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 18:36:11,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 18:36:11,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 18:36:11,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 18:36:11,581 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 18:36:11,581 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-29 18:36:11,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:36:11 BoogieIcfgContainer [2020-11-29 18:36:11,583 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 18:36:11,585 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 18:36:11,585 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 18:36:11,589 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 18:36:11,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:36:10" (1/3) ... [2020-11-29 18:36:11,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d64240f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:36:11, skipping insertion in model container [2020-11-29 18:36:11,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:36:11" (2/3) ... [2020-11-29 18:36:11,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d64240f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:36:11, skipping insertion in model container [2020-11-29 18:36:11,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:36:11" (3/3) ... [2020-11-29 18:36:11,594 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark34_conjunctive.i [2020-11-29 18:36:11,606 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 18:36:11,612 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 18:36:11,627 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 18:36:11,654 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 18:36:11,654 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 18:36:11,654 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 18:36:11,655 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 18:36:11,655 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 18:36:11,655 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 18:36:11,655 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 18:36:11,655 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 18:36:11,670 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-11-29 18:36:11,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 18:36:11,676 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:36:11,677 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:36:11,678 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:36:11,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:36:11,685 INFO L82 PathProgramCache]: Analyzing trace with hash 185199154, now seen corresponding path program 1 times [2020-11-29 18:36:11,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:36:11,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244441758] [2020-11-29 18:36:11,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:36:11,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:36:11,892 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 18:36:11,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244441758] [2020-11-29 18:36:11,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:36:11,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 18:36:11,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354387789] [2020-11-29 18:36:11,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 18:36:11,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:36:11,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 18:36:11,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 18:36:11,939 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 2 states. [2020-11-29 18:36:11,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:36:11,958 INFO L93 Difference]: Finished difference Result 22 states and 27 transitions. [2020-11-29 18:36:11,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 18:36:11,966 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-29 18:36:11,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:36:11,976 INFO L225 Difference]: With dead ends: 22 [2020-11-29 18:36:11,976 INFO L226 Difference]: Without dead ends: 9 [2020-11-29 18:36:11,980 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 18:36:12,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-11-29 18:36:12,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-11-29 18:36:12,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-11-29 18:36:12,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-11-29 18:36:12,017 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 8 [2020-11-29 18:36:12,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:36:12,017 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-11-29 18:36:12,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 18:36:12,018 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-11-29 18:36:12,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 18:36:12,019 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:36:12,019 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:36:12,019 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 18:36:12,020 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:36:12,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:36:12,021 INFO L82 PathProgramCache]: Analyzing trace with hash 181505070, now seen corresponding path program 1 times [2020-11-29 18:36:12,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:36:12,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312842391] [2020-11-29 18:36:12,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:36:12,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:36:12,174 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 18:36:12,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312842391] [2020-11-29 18:36:12,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:36:12,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 18:36:12,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327980103] [2020-11-29 18:36:12,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 18:36:12,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:36:12,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 18:36:12,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 18:36:12,180 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 3 states. [2020-11-29 18:36:12,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:36:12,195 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2020-11-29 18:36:12,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 18:36:12,196 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-29 18:36:12,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:36:12,197 INFO L225 Difference]: With dead ends: 15 [2020-11-29 18:36:12,197 INFO L226 Difference]: Without dead ends: 10 [2020-11-29 18:36:12,198 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 18:36:12,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-11-29 18:36:12,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-11-29 18:36:12,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-29 18:36:12,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2020-11-29 18:36:12,203 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2020-11-29 18:36:12,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:36:12,203 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2020-11-29 18:36:12,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 18:36:12,204 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2020-11-29 18:36:12,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 18:36:12,205 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:36:12,205 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:36:12,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 18:36:12,206 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:36:12,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:36:12,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1383312870, now seen corresponding path program 1 times [2020-11-29 18:36:12,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:36:12,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695829582] [2020-11-29 18:36:12,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:36:12,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:36:12,512 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:36:12,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695829582] [2020-11-29 18:36:12,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991389415] [2020-11-29 18:36:12,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8c54224e-ee44-4da7-a93a-1f9259bf645c/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 18:36:12,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:36:12,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 18:36:12,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:36:12,768 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 18:36:12,795 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 18:36:12,800 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 18:36:12,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:36:12,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:36:12,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2020-11-29 18:36:12,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097348423] [2020-11-29 18:36:12,823 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 18:36:12,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:36:12,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 18:36:12,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-11-29 18:36:12,825 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 9 states. [2020-11-29 18:36:13,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:36:13,027 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2020-11-29 18:36:13,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 18:36:13,028 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2020-11-29 18:36:13,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:36:13,029 INFO L225 Difference]: With dead ends: 16 [2020-11-29 18:36:13,029 INFO L226 Difference]: Without dead ends: 11 [2020-11-29 18:36:13,030 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-11-29 18:36:13,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-11-29 18:36:13,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-11-29 18:36:13,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-29 18:36:13,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2020-11-29 18:36:13,034 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2020-11-29 18:36:13,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:36:13,034 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2020-11-29 18:36:13,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 18:36:13,035 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-11-29 18:36:13,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 18:36:13,035 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:36:13,035 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:36:13,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-29 18:36:13,236 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:36:13,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:36:13,237 INFO L82 PathProgramCache]: Analyzing trace with hash -15350994, now seen corresponding path program 2 times [2020-11-29 18:36:13,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:36:13,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824326287] [2020-11-29 18:36:13,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:36:13,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:36:13,455 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-29 18:36:13,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824326287] [2020-11-29 18:36:13,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835081907] [2020-11-29 18:36:13,456 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8c54224e-ee44-4da7-a93a-1f9259bf645c/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 18:36:13,504 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 18:36:13,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:36:13,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-29 18:36:13,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:36:13,580 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 18:36:13,601 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 18:36:13,607 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 18:36:13,650 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 18:36:13,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:36:13,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 10 [2020-11-29 18:36:13,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82284634] [2020-11-29 18:36:13,651 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 18:36:13,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:36:13,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 18:36:13,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-11-29 18:36:13,653 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 10 states. [2020-11-29 18:36:13,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:36:13,976 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2020-11-29 18:36:13,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 18:36:13,976 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 10 [2020-11-29 18:36:13,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:36:13,977 INFO L225 Difference]: With dead ends: 14 [2020-11-29 18:36:13,977 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 18:36:13,978 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2020-11-29 18:36:13,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 18:36:13,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 18:36:13,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 18:36:13,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 18:36:13,979 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-11-29 18:36:13,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:36:13,979 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 18:36:13,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 18:36:13,980 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 18:36:13,980 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 18:36:14,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:36:14,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 18:36:14,274 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 18:36:14,274 INFO L274 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-11-29 18:36:14,275 INFO L274 CegarLoopResult]: For program point L15(lines 15 17) no Hoare annotation was computed. [2020-11-29 18:36:14,275 INFO L274 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-11-29 18:36:14,275 INFO L274 CegarLoopResult]: For program point L11-2(line 11) no Hoare annotation was computed. [2020-11-29 18:36:14,275 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 18:36:14,275 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 18:36:14,275 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 18:36:14,276 INFO L277 CegarLoopResult]: At program point L28(lines 19 29) the Hoare annotation is: true [2020-11-29 18:36:14,276 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 11) no Hoare annotation was computed. [2020-11-29 18:36:14,276 INFO L270 CegarLoopResult]: At program point L24-2(lines 24 26) the Hoare annotation is: (let ((.cse0 (+ ULTIMATE.start_main_~k~0 ULTIMATE.start_main_~j~0))) (and (< 0 ULTIMATE.start_main_~n~0) (<= .cse0 ULTIMATE.start_main_~n~0) (<= ULTIMATE.start_main_~n~0 .cse0) (< 0 (+ ULTIMATE.start_main_~k~0 1)))) [2020-11-29 18:36:14,276 INFO L274 CegarLoopResult]: For program point L24-3(lines 24 26) no Hoare annotation was computed. [2020-11-29 18:36:14,276 INFO L274 CegarLoopResult]: For program point L14(lines 14 18) no Hoare annotation was computed. [2020-11-29 18:36:14,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 06:36:14 BoogieIcfgContainer [2020-11-29 18:36:14,295 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 18:36:14,295 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 18:36:14,295 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 18:36:14,296 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 18:36:14,296 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:36:11" (3/4) ... [2020-11-29 18:36:14,300 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 18:36:14,311 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-29 18:36:14,312 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 18:36:14,312 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 18:36:14,312 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 18:36:14,360 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_8c54224e-ee44-4da7-a93a-1f9259bf645c/bin/uautomizer/witness.graphml [2020-11-29 18:36:14,360 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 18:36:14,363 INFO L168 Benchmark]: Toolchain (without parser) took 3466.23 ms. Allocated memory was 92.3 MB in the beginning and 113.2 MB in the end (delta: 21.0 MB). Free memory was 64.9 MB in the beginning and 67.0 MB in the end (delta: -2.0 MB). Peak memory consumption was 19.4 MB. Max. memory is 16.1 GB. [2020-11-29 18:36:14,363 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 92.3 MB. Free memory is still 49.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:36:14,364 INFO L168 Benchmark]: CACSL2BoogieTranslator took 308.55 ms. Allocated memory is still 92.3 MB. Free memory was 64.7 MB in the beginning and 69.3 MB in the end (delta: -4.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 18:36:14,365 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.95 ms. Allocated memory is still 92.3 MB. Free memory was 69.3 MB in the beginning and 67.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:36:14,365 INFO L168 Benchmark]: Boogie Preprocessor took 24.89 ms. Allocated memory is still 92.3 MB. Free memory was 67.9 MB in the beginning and 66.9 MB in the end (delta: 996.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:36:14,366 INFO L168 Benchmark]: RCFGBuilder took 301.57 ms. Allocated memory is still 92.3 MB. Free memory was 66.6 MB in the beginning and 55.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 18:36:14,367 INFO L168 Benchmark]: TraceAbstraction took 2709.58 ms. Allocated memory was 92.3 MB in the beginning and 113.2 MB in the end (delta: 21.0 MB). Free memory was 55.3 MB in the beginning and 69.1 MB in the end (delta: -13.7 MB). Peak memory consumption was 8.6 MB. Max. memory is 16.1 GB. [2020-11-29 18:36:14,368 INFO L168 Benchmark]: Witness Printer took 65.32 ms. Allocated memory is still 113.2 MB. Free memory was 69.1 MB in the beginning and 67.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:36:14,372 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 92.3 MB. Free memory is still 49.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 308.55 ms. Allocated memory is still 92.3 MB. Free memory was 64.7 MB in the beginning and 69.3 MB in the end (delta: -4.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.95 ms. Allocated memory is still 92.3 MB. Free memory was 69.3 MB in the beginning and 67.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.89 ms. Allocated memory is still 92.3 MB. Free memory was 67.9 MB in the beginning and 66.9 MB in the end (delta: 996.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 301.57 ms. Allocated memory is still 92.3 MB. Free memory was 66.6 MB in the beginning and 55.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2709.58 ms. Allocated memory was 92.3 MB in the beginning and 113.2 MB in the end (delta: 21.0 MB). Free memory was 55.3 MB in the beginning and 69.1 MB in the end (delta: -13.7 MB). Peak memory consumption was 8.6 MB. Max. memory is 16.1 GB. * Witness Printer took 65.32 ms. Allocated memory is still 113.2 MB. Free memory was 69.1 MB in the beginning and 67.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 11]: 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: 24]: Loop Invariant Derived loop invariant: ((0 < n && k + j <= n) && n <= k + j) && 0 < k + 1 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.5s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 31 SDtfs, 15 SDslu, 35 SDs, 0 SdLazy, 66 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 6 NumberOfFragments, 20 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 48 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 1837 SizeOfPredicates, 10 NumberOfNonLiveVariables, 120 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 1/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...