./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/nested9.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_2bccb028-3229-462a-a570-afc362f73c37/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_2bccb028-3229-462a-a570-afc362f73c37/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2bccb028-3229-462a-a570-afc362f73c37/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2bccb028-3229-462a-a570-afc362f73c37/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-invgen/nested9.i -s /tmp/vcloud-vcloud-master/worker/run_dir_2bccb028-3229-462a-a570-afc362f73c37/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2bccb028-3229-462a-a570-afc362f73c37/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 b0874b2316aff3266709463f0d72702527bf3a82 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:06:27,210 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:06:27,213 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:06:27,287 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:06:27,304 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:06:27,309 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:06:27,313 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:06:27,322 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:06:27,325 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:06:27,330 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:06:27,331 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:06:27,333 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:06:27,334 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:06:27,335 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:06:27,337 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:06:27,339 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:06:27,340 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:06:27,342 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:06:27,344 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:06:27,347 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:06:27,350 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:06:27,352 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:06:27,354 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:06:27,355 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:06:27,359 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:06:27,360 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:06:27,360 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:06:27,362 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:06:27,363 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:06:27,364 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:06:27,365 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:06:27,366 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:06:27,367 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:06:27,369 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:06:27,370 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:06:27,371 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:06:27,372 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:06:27,372 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:06:27,373 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:06:27,374 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:06:27,375 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:06:27,376 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2bccb028-3229-462a-a570-afc362f73c37/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:06:27,406 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:06:27,406 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:06:27,408 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:06:27,408 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:06:27,409 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:06:27,409 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:06:27,409 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:06:27,410 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:06:27,410 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:06:27,410 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:06:27,410 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:06:27,411 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:06:27,411 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:06:27,411 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:06:27,411 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:06:27,412 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:06:27,412 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:06:27,412 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:06:27,413 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:06:27,413 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:06:27,413 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:06:27,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:06:27,414 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:06:27,414 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:06:27,414 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:06:27,415 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:06:27,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:06:27,415 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:06:27,415 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:06:27,416 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_2bccb028-3229-462a-a570-afc362f73c37/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_2bccb028-3229-462a-a570-afc362f73c37/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b0874b2316aff3266709463f0d72702527bf3a82 [2020-11-28 03:06:27,695 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:06:27,722 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:06:27,725 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:06:27,727 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:06:27,730 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:06:27,731 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2bccb028-3229-462a-a570-afc362f73c37/bin/uautomizer/../../sv-benchmarks/c/loop-invgen/nested9.i [2020-11-28 03:06:27,833 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2bccb028-3229-462a-a570-afc362f73c37/bin/uautomizer/data/11ff176ac/ea1b7fcf7ca04729aec571d964d900c4/FLAGce38df9e2 [2020-11-28 03:06:28,375 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:06:28,375 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2bccb028-3229-462a-a570-afc362f73c37/sv-benchmarks/c/loop-invgen/nested9.i [2020-11-28 03:06:28,383 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2bccb028-3229-462a-a570-afc362f73c37/bin/uautomizer/data/11ff176ac/ea1b7fcf7ca04729aec571d964d900c4/FLAGce38df9e2 [2020-11-28 03:06:28,728 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2bccb028-3229-462a-a570-afc362f73c37/bin/uautomizer/data/11ff176ac/ea1b7fcf7ca04729aec571d964d900c4 [2020-11-28 03:06:28,732 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:06:28,735 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:06:28,740 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:06:28,740 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:06:28,746 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:06:28,748 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:06:28" (1/1) ... [2020-11-28 03:06:28,757 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a679356 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:28, skipping insertion in model container [2020-11-28 03:06:28,758 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:06:28" (1/1) ... [2020-11-28 03:06:28,768 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:06:28,792 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:06:28,998 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:06:29,020 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:06:29,055 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:06:29,070 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:06:29,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:29 WrapperNode [2020-11-28 03:06:29,071 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:06:29,072 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:06:29,073 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:06:29,073 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:06:29,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:29" (1/1) ... [2020-11-28 03:06:29,103 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:29" (1/1) ... [2020-11-28 03:06:29,139 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:06:29,141 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:06:29,143 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:06:29,143 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:06:29,154 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:29" (1/1) ... [2020-11-28 03:06:29,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:29" (1/1) ... [2020-11-28 03:06:29,157 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:29" (1/1) ... [2020-11-28 03:06:29,157 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:29" (1/1) ... [2020-11-28 03:06:29,161 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:29" (1/1) ... [2020-11-28 03:06:29,166 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:29" (1/1) ... [2020-11-28 03:06:29,168 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:29" (1/1) ... [2020-11-28 03:06:29,170 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:06:29,172 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:06:29,172 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:06:29,172 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:06:29,181 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:29" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2bccb028-3229-462a-a570-afc362f73c37/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:06:29,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:06:29,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:06:29,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:06:29,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:06:29,605 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:06:29,605 INFO L298 CfgBuilder]: Removed 11 assume(true) statements. [2020-11-28 03:06:29,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:06:29 BoogieIcfgContainer [2020-11-28 03:06:29,607 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:06:29,616 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:06:29,616 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:06:29,627 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:06:29,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:06:28" (1/3) ... [2020-11-28 03:06:29,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a28a280 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:06:29, skipping insertion in model container [2020-11-28 03:06:29,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:29" (2/3) ... [2020-11-28 03:06:29,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a28a280 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:06:29, skipping insertion in model container [2020-11-28 03:06:29,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:06:29" (3/3) ... [2020-11-28 03:06:29,631 INFO L111 eAbstractionObserver]: Analyzing ICFG nested9.i [2020-11-28 03:06:29,645 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:06:29,650 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:06:29,689 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 03:06:29,717 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:06:29,718 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:06:29,718 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:06:29,718 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:06:29,718 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:06:29,719 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:06:29,719 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:06:29,719 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:06:29,736 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-11-28 03:06:29,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 03:06:29,743 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:06:29,744 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:06:29,745 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:06:29,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:06:29,753 INFO L82 PathProgramCache]: Analyzing trace with hash -695179202, now seen corresponding path program 1 times [2020-11-28 03:06:29,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:06:29,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69088884] [2020-11-28 03:06:29,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:06:29,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:06:30,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:06:30,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69088884] [2020-11-28 03:06:30,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:06:30,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 03:06:30,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23748191] [2020-11-28 03:06:30,119 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:06:30,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:06:30,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:06:30,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:06:30,143 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 6 states. [2020-11-28 03:06:30,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:06:30,438 INFO L93 Difference]: Finished difference Result 74 states and 115 transitions. [2020-11-28 03:06:30,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 03:06:30,441 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-11-28 03:06:30,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:06:30,462 INFO L225 Difference]: With dead ends: 74 [2020-11-28 03:06:30,474 INFO L226 Difference]: Without dead ends: 46 [2020-11-28 03:06:30,478 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:06:30,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-11-28 03:06:30,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 26. [2020-11-28 03:06:30,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-28 03:06:30,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2020-11-28 03:06:30,546 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 14 [2020-11-28 03:06:30,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:06:30,547 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2020-11-28 03:06:30,547 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:06:30,549 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2020-11-28 03:06:30,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 03:06:30,551 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:06:30,552 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:06:30,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:06:30,553 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:06:30,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:06:30,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1058384818, now seen corresponding path program 1 times [2020-11-28 03:06:30,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:06:30,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236551578] [2020-11-28 03:06:30,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:06:30,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:06:30,755 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:06:30,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236551578] [2020-11-28 03:06:30,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806904223] [2020-11-28 03:06:30,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2bccb028-3229-462a-a570-afc362f73c37/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:06:30,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:06:30,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 03:06:30,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:06:31,049 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:06:31,058 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:06:31,069 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:06:31,080 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:06:31,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:06:31,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:06:31,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2020-11-28 03:06:31,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142544345] [2020-11-28 03:06:31,231 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:06:31,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:06:31,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:06:31,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-11-28 03:06:31,233 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand 7 states. [2020-11-28 03:06:31,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:06:31,453 INFO L93 Difference]: Finished difference Result 50 states and 61 transitions. [2020-11-28 03:06:31,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 03:06:31,454 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2020-11-28 03:06:31,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:06:31,456 INFO L225 Difference]: With dead ends: 50 [2020-11-28 03:06:31,456 INFO L226 Difference]: Without dead ends: 46 [2020-11-28 03:06:31,457 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-11-28 03:06:31,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-11-28 03:06:31,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 20. [2020-11-28 03:06:31,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-28 03:06:31,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2020-11-28 03:06:31,469 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 17 [2020-11-28 03:06:31,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:06:31,472 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2020-11-28 03:06:31,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:06:31,472 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-11-28 03:06:31,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 03:06:31,474 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:06:31,475 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:06:31,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-28 03:06:31,694 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:06:31,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:06:31,695 INFO L82 PathProgramCache]: Analyzing trace with hash -678642988, now seen corresponding path program 1 times [2020-11-28 03:06:31,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:06:31,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899140505] [2020-11-28 03:06:31,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:06:31,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:06:31,854 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:06:31,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899140505] [2020-11-28 03:06:31,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508825598] [2020-11-28 03:06:31,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2bccb028-3229-462a-a570-afc362f73c37/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:06:31,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:06:31,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 03:06:31,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:06:31,940 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-28 03:06:31,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:06:31,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2020-11-28 03:06:31,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912117773] [2020-11-28 03:06:31,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:06:31,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:06:31,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:06:31,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:06:31,942 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 4 states. [2020-11-28 03:06:31,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:06:31,980 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2020-11-28 03:06:31,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:06:31,984 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-28 03:06:31,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:06:31,985 INFO L225 Difference]: With dead ends: 36 [2020-11-28 03:06:31,985 INFO L226 Difference]: Without dead ends: 23 [2020-11-28 03:06:31,986 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:06:31,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-28 03:06:31,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-11-28 03:06:31,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-28 03:06:31,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2020-11-28 03:06:31,996 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 17 [2020-11-28 03:06:31,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:06:31,997 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2020-11-28 03:06:31,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:06:31,997 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2020-11-28 03:06:31,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-28 03:06:31,999 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:06:31,999 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:06:32,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:06:32,213 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:06:32,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:06:32,213 INFO L82 PathProgramCache]: Analyzing trace with hash 59855584, now seen corresponding path program 1 times [2020-11-28 03:06:32,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:06:32,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28758278] [2020-11-28 03:06:32,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:06:32,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:06:32,343 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:06:32,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28758278] [2020-11-28 03:06:32,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081544672] [2020-11-28 03:06:32,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2bccb028-3229-462a-a570-afc362f73c37/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:06:32,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:06:32,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 03:06:32,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:06:32,628 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:06:32,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:06:32,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2020-11-28 03:06:32,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577318251] [2020-11-28 03:06:32,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-28 03:06:32,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:06:32,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-28 03:06:32,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-11-28 03:06:32,631 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 11 states. [2020-11-28 03:06:33,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:06:33,002 INFO L93 Difference]: Finished difference Result 50 states and 61 transitions. [2020-11-28 03:06:33,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-28 03:06:33,005 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 20 [2020-11-28 03:06:33,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:06:33,007 INFO L225 Difference]: With dead ends: 50 [2020-11-28 03:06:33,007 INFO L226 Difference]: Without dead ends: 37 [2020-11-28 03:06:33,008 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-11-28 03:06:33,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-28 03:06:33,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 31. [2020-11-28 03:06:33,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-28 03:06:33,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2020-11-28 03:06:33,023 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 20 [2020-11-28 03:06:33,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:06:33,023 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2020-11-28 03:06:33,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-28 03:06:33,026 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2020-11-28 03:06:33,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-28 03:06:33,027 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:06:33,028 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:06:33,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:06:33,241 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:06:33,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:06:33,241 INFO L82 PathProgramCache]: Analyzing trace with hash 895141480, now seen corresponding path program 1 times [2020-11-28 03:06:33,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:06:33,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440536308] [2020-11-28 03:06:33,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:06:33,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:06:33,387 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-11-28 03:06:33,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440536308] [2020-11-28 03:06:33,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567727145] [2020-11-28 03:06:33,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2bccb028-3229-462a-a570-afc362f73c37/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:06:33,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:06:33,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 03:06:33,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:06:33,615 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-28 03:06:33,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:06:33,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2020-11-28 03:06:33,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441415070] [2020-11-28 03:06:33,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:06:33,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:06:33,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:06:33,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-11-28 03:06:33,618 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand 6 states. [2020-11-28 03:06:33,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:06:33,732 INFO L93 Difference]: Finished difference Result 52 states and 63 transitions. [2020-11-28 03:06:33,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:06:33,733 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-11-28 03:06:33,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:06:33,734 INFO L225 Difference]: With dead ends: 52 [2020-11-28 03:06:33,734 INFO L226 Difference]: Without dead ends: 33 [2020-11-28 03:06:33,735 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-11-28 03:06:33,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-11-28 03:06:33,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2020-11-28 03:06:33,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-28 03:06:33,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-11-28 03:06:33,744 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 26 [2020-11-28 03:06:33,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:06:33,744 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-11-28 03:06:33,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:06:33,745 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-11-28 03:06:33,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-28 03:06:33,746 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:06:33,746 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:06:33,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:06:33,961 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:06:33,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:06:33,961 INFO L82 PathProgramCache]: Analyzing trace with hash 423449338, now seen corresponding path program 2 times [2020-11-28 03:06:33,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:06:33,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674252415] [2020-11-28 03:06:33,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:06:34,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:06:34,136 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-28 03:06:34,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674252415] [2020-11-28 03:06:34,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761999265] [2020-11-28 03:06:34,137 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2bccb028-3229-462a-a570-afc362f73c37/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:06:34,192 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-11-28 03:06:34,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:06:34,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 03:06:34,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:06:34,258 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:06:34,262 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:06:34,336 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-11-28 03:06:34,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:06:34,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 10 [2020-11-28 03:06:34,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958417474] [2020-11-28 03:06:34,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-28 03:06:34,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:06:34,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-28 03:06:34,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:06:34,339 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 10 states. [2020-11-28 03:06:34,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:06:34,586 INFO L93 Difference]: Finished difference Result 51 states and 61 transitions. [2020-11-28 03:06:34,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 03:06:34,589 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 29 [2020-11-28 03:06:34,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:06:34,589 INFO L225 Difference]: With dead ends: 51 [2020-11-28 03:06:34,589 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 03:06:34,590 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-11-28 03:06:34,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 03:06:34,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 03:06:34,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 03:06:34,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 03:06:34,591 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2020-11-28 03:06:34,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:06:34,592 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:06:34,592 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-28 03:06:34,592 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:06:34,592 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 03:06:34,802 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-11-28 03:06:34,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 03:06:35,156 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2020-11-28 03:06:35,314 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 25 [2020-11-28 03:06:35,316 INFO L274 CegarLoopResult]: For program point L35-2(lines 35 37) no Hoare annotation was computed. [2020-11-28 03:06:35,317 INFO L270 CegarLoopResult]: At program point L35-3(lines 35 37) the Hoare annotation is: (let ((.cse2 (* 2 ULTIMATE.start_main_~i~0))) (let ((.cse1 (< ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~n~0)) (.cse0 (<= .cse2 ULTIMATE.start_main_~j~0))) (or (and .cse0 .cse1 (<= ULTIMATE.start_main_~i~0 1) (< ULTIMATE.start_main_~j~0 (* 3 ULTIMATE.start_main_~i~0))) (and .cse0 .cse1 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_main_~i~0)) (and .cse0 (= ULTIMATE.start_main_~i~0 0) (<= (+ ULTIMATE.start_main_~i~0 1) ULTIMATE.start_main_~n~0) (<= ULTIMATE.start_main_~j~0 .cse2))))) [2020-11-28 03:06:35,317 INFO L274 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-11-28 03:06:35,317 INFO L274 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-11-28 03:06:35,317 INFO L270 CegarLoopResult]: At program point L36-2(lines 36 37) the Hoare annotation is: (let ((.cse0 (<= (* 2 ULTIMATE.start_main_~i~0) ULTIMATE.start_main_~j~0)) (.cse1 (< ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~n~0)) (.cse2 (< ULTIMATE.start_main_~j~0 (* 3 ULTIMATE.start_main_~i~0)))) (or (and .cse0 (<= (+ (div (+ ULTIMATE.start_main_~j~0 (- 1)) 2) 1) ULTIMATE.start_main_~k~0) .cse1 (<= ULTIMATE.start_main_~k~0 (div ULTIMATE.start_main_~j~0 2)) (<= ULTIMATE.start_main_~i~0 1) .cse2) (and .cse0 .cse1 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse2))) [2020-11-28 03:06:35,317 INFO L274 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-11-28 03:06:35,317 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-28 03:06:35,317 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 03:06:35,318 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 03:06:35,318 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-28 03:06:35,318 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-11-28 03:06:35,318 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-11-28 03:06:35,318 INFO L274 CegarLoopResult]: For program point L12-3(line 12) no Hoare annotation was computed. [2020-11-28 03:06:35,318 INFO L274 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-11-28 03:06:35,318 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 03:06:35,319 INFO L274 CegarLoopResult]: For program point L33-1(line 33) no Hoare annotation was computed. [2020-11-28 03:06:35,319 INFO L277 CegarLoopResult]: At program point L38(lines 25 40) the Hoare annotation is: true [2020-11-28 03:06:35,319 INFO L274 CegarLoopResult]: For program point L34-2(lines 34 37) no Hoare annotation was computed. [2020-11-28 03:06:35,319 INFO L270 CegarLoopResult]: At program point L34-3(lines 34 37) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start_main_~i~0))) (or (= ULTIMATE.start_main_~i~0 0) (and (<= ULTIMATE.start_main_~i~0 1) .cse0 (<= ULTIMATE.start_main_~j~0 (* 2 ULTIMATE.start_main_~i~0))) (and (<= 2 ULTIMATE.start_main_~n~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse0))) [2020-11-28 03:06:35,319 INFO L274 CegarLoopResult]: For program point L30(line 30) no Hoare annotation was computed. [2020-11-28 03:06:35,319 INFO L274 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-11-28 03:06:35,319 INFO L270 CegarLoopResult]: At program point L18-2(lines 1 40) the Hoare annotation is: (and (<= (* 2 ULTIMATE.start_main_~i~0) ULTIMATE.start_main_~j~0) (< ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~n~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (< ULTIMATE.start_main_~j~0 (* 3 ULTIMATE.start_main_~i~0))) [2020-11-28 03:06:35,320 INFO L277 CegarLoopResult]: At program point L39(lines 25 40) the Hoare annotation is: true [2020-11-28 03:06:35,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:06:35 BoogieIcfgContainer [2020-11-28 03:06:35,346 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:06:35,347 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:06:35,347 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:06:35,347 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:06:35,347 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:06:29" (3/4) ... [2020-11-28 03:06:35,351 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 03:06:35,362 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-28 03:06:35,362 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 03:06:35,362 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:06:35,363 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:06:35,412 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_2bccb028-3229-462a-a570-afc362f73c37/bin/uautomizer/witness.graphml [2020-11-28 03:06:35,412 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:06:35,413 INFO L168 Benchmark]: Toolchain (without parser) took 6677.65 ms. Allocated memory was 98.6 MB in the beginning and 144.7 MB in the end (delta: 46.1 MB). Free memory was 71.0 MB in the beginning and 69.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 48.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:06:35,414 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 98.6 MB. Free memory was 57.3 MB in the beginning and 57.3 MB in the end (delta: 1.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:06:35,414 INFO L168 Benchmark]: CACSL2BoogieTranslator took 331.46 ms. Allocated memory is still 98.6 MB. Free memory was 71.0 MB in the beginning and 76.4 MB in the end (delta: -5.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:06:35,415 INFO L168 Benchmark]: Boogie Procedure Inliner took 67.40 ms. Allocated memory is still 98.6 MB. Free memory was 76.4 MB in the beginning and 75.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:06:35,416 INFO L168 Benchmark]: Boogie Preprocessor took 29.88 ms. Allocated memory is still 98.6 MB. Free memory was 75.1 MB in the beginning and 73.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:06:35,416 INFO L168 Benchmark]: RCFGBuilder took 442.62 ms. Allocated memory is still 98.6 MB. Free memory was 73.9 MB in the beginning and 60.4 MB in the end (delta: 13.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-28 03:06:35,417 INFO L168 Benchmark]: TraceAbstraction took 5730.00 ms. Allocated memory was 98.6 MB in the beginning and 144.7 MB in the end (delta: 46.1 MB). Free memory was 59.6 MB in the beginning and 72.8 MB in the end (delta: -13.2 MB). Peak memory consumption was 34.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:06:35,418 INFO L168 Benchmark]: Witness Printer took 65.33 ms. Allocated memory is still 144.7 MB. Free memory was 72.8 MB in the beginning and 69.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:06:35,421 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 98.6 MB. Free memory was 57.3 MB in the beginning and 57.3 MB in the end (delta: 1.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 331.46 ms. Allocated memory is still 98.6 MB. Free memory was 71.0 MB in the beginning and 76.4 MB in the end (delta: -5.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 67.40 ms. Allocated memory is still 98.6 MB. Free memory was 76.4 MB in the beginning and 75.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.88 ms. Allocated memory is still 98.6 MB. Free memory was 75.1 MB in the beginning and 73.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 442.62 ms. Allocated memory is still 98.6 MB. Free memory was 73.9 MB in the beginning and 60.4 MB in the end (delta: 13.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5730.00 ms. Allocated memory was 98.6 MB in the beginning and 144.7 MB in the end (delta: 46.1 MB). Free memory was 59.6 MB in the beginning and 72.8 MB in the end (delta: -13.2 MB). Peak memory consumption was 34.1 MB. Max. memory is 16.1 GB. * Witness Printer took 65.33 ms. Allocated memory is still 144.7 MB. Free memory was 72.8 MB in the beginning and 69.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: (i == 0 || ((i <= 1 && 1 <= i) && j <= 2 * i)) || ((2 <= n && 1 <= cond) && 1 <= i) - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: ((2 * i <= j && i < n) && 1 <= cond) && j < 3 * i - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: ((((2 * i <= j && i < n) && i <= 1) && j < 3 * i) || (((2 * i <= j && i < n) && 1 <= cond) && 1 <= i)) || (((2 * i <= j && i == 0) && i + 1 <= n) && j <= 2 * i) - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: (((((2 * i <= j && (j + -1) / 2 + 1 <= k) && i < n) && k <= j / 2) && i <= 1) && j < 3 * i) || (((2 * i <= j && i < n) && 1 <= cond) && j < 3 * i) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.0s, OverallIterations: 6, TraceHistogramMax: 3, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 107 SDtfs, 190 SDslu, 215 SDs, 0 SdLazy, 307 SolverSat, 52 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 161 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 55 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 27 NumberOfFragments, 146 HoareAnnotationTreeSize, 6 FomulaSimplifications, 1331 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 6 FomulaSimplificationsInter, 101 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 232 NumberOfCodeBlocks, 217 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 221 ConstructedInterpolants, 0 QuantifiedInterpolants, 13685 SizeOfPredicates, 19 NumberOfNonLiveVariables, 374 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 11 InterpolantComputations, 4 PerfectInterpolantSequences, 56/84 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...