./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/verifythis/elimination_max_rec.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_81660b7e-4593-4b1a-997f-59cf22871a66/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_81660b7e-4593-4b1a-997f-59cf22871a66/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_81660b7e-4593-4b1a-997f-59cf22871a66/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_81660b7e-4593-4b1a-997f-59cf22871a66/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/verifythis/elimination_max_rec.c -s /tmp/vcloud-vcloud-master/worker/run_dir_81660b7e-4593-4b1a-997f-59cf22871a66/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_81660b7e-4593-4b1a-997f-59cf22871a66/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e2b2876d557403fdc14b5f2a0ee96243fe1db281 ......................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_81660b7e-4593-4b1a-997f-59cf22871a66/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_81660b7e-4593-4b1a-997f-59cf22871a66/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_81660b7e-4593-4b1a-997f-59cf22871a66/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_81660b7e-4593-4b1a-997f-59cf22871a66/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/verifythis/elimination_max_rec.c -s /tmp/vcloud-vcloud-master/worker/run_dir_81660b7e-4593-4b1a-997f-59cf22871a66/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_81660b7e-4593-4b1a-997f-59cf22871a66/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e2b2876d557403fdc14b5f2a0ee96243fe1db281 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-16 00:34:45,269 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-16 00:34:45,271 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-16 00:34:45,284 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-16 00:34:45,284 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-16 00:34:45,286 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-16 00:34:45,288 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-16 00:34:45,295 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-16 00:34:45,297 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-16 00:34:45,298 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-16 00:34:45,299 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-16 00:34:45,300 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-16 00:34:45,300 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-16 00:34:45,301 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-16 00:34:45,302 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-16 00:34:45,303 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-16 00:34:45,304 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-16 00:34:45,310 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-16 00:34:45,312 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-16 00:34:45,314 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-16 00:34:45,317 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-16 00:34:45,318 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-16 00:34:45,319 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-16 00:34:45,320 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-16 00:34:45,322 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-16 00:34:45,323 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-16 00:34:45,323 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-16 00:34:45,324 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-16 00:34:45,324 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-16 00:34:45,325 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-16 00:34:45,325 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-16 00:34:45,326 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-16 00:34:45,326 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-16 00:34:45,327 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-16 00:34:45,328 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-16 00:34:45,328 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-16 00:34:45,329 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-16 00:34:45,329 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-16 00:34:45,329 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-16 00:34:45,330 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-16 00:34:45,330 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-16 00:34:45,331 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_81660b7e-4593-4b1a-997f-59cf22871a66/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-16 00:34:45,345 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-16 00:34:45,345 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-16 00:34:45,346 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-16 00:34:45,346 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-16 00:34:45,347 INFO L138 SettingsManager]: * Use SBE=true [2019-11-16 00:34:45,347 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-16 00:34:45,347 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-16 00:34:45,348 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-16 00:34:45,348 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-16 00:34:45,348 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-16 00:34:45,348 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-16 00:34:45,349 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-16 00:34:45,349 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-16 00:34:45,349 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-16 00:34:45,349 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-16 00:34:45,350 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-16 00:34:45,350 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-16 00:34:45,350 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-16 00:34:45,350 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-16 00:34:45,351 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-16 00:34:45,351 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-16 00:34:45,351 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-16 00:34:45,351 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-16 00:34:45,352 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-16 00:34:45,352 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-16 00:34:45,352 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-16 00:34:45,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-16 00:34:45,353 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-16 00:34:45,353 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_81660b7e-4593-4b1a-997f-59cf22871a66/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2b2876d557403fdc14b5f2a0ee96243fe1db281 [2019-11-16 00:34:45,391 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-16 00:34:45,411 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-16 00:34:45,414 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-16 00:34:45,415 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-16 00:34:45,416 INFO L275 PluginConnector]: CDTParser initialized [2019-11-16 00:34:45,416 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_81660b7e-4593-4b1a-997f-59cf22871a66/bin/uautomizer/../../sv-benchmarks/c/verifythis/elimination_max_rec.c [2019-11-16 00:34:45,484 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_81660b7e-4593-4b1a-997f-59cf22871a66/bin/uautomizer/data/0e4908344/500e59cbd79e44d7b99272d58b31f8a5/FLAGfd7f94aa1 [2019-11-16 00:34:45,868 INFO L306 CDTParser]: Found 1 translation units. [2019-11-16 00:34:45,870 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_81660b7e-4593-4b1a-997f-59cf22871a66/sv-benchmarks/c/verifythis/elimination_max_rec.c [2019-11-16 00:34:45,877 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_81660b7e-4593-4b1a-997f-59cf22871a66/bin/uautomizer/data/0e4908344/500e59cbd79e44d7b99272d58b31f8a5/FLAGfd7f94aa1 [2019-11-16 00:34:46,235 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_81660b7e-4593-4b1a-997f-59cf22871a66/bin/uautomizer/data/0e4908344/500e59cbd79e44d7b99272d58b31f8a5 [2019-11-16 00:34:46,238 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-16 00:34:46,239 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-16 00:34:46,240 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-16 00:34:46,240 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-16 00:34:46,244 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-16 00:34:46,245 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:34:46" (1/1) ... [2019-11-16 00:34:46,248 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d9f1588 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:34:46, skipping insertion in model container [2019-11-16 00:34:46,248 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:34:46" (1/1) ... [2019-11-16 00:34:46,253 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-16 00:34:46,266 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-16 00:34:46,412 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-16 00:34:46,487 INFO L188 MainTranslator]: Completed pre-run [2019-11-16 00:34:46,512 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-16 00:34:46,535 INFO L192 MainTranslator]: Completed translation [2019-11-16 00:34:46,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:34:46 WrapperNode [2019-11-16 00:34:46,536 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-16 00:34:46,537 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-16 00:34:46,537 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-16 00:34:46,537 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-16 00:34:46,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:34:46" (1/1) ... [2019-11-16 00:34:46,551 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:34:46" (1/1) ... [2019-11-16 00:34:46,570 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-16 00:34:46,570 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-16 00:34:46,571 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-16 00:34:46,571 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-16 00:34:46,579 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:34:46" (1/1) ... [2019-11-16 00:34:46,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:34:46" (1/1) ... [2019-11-16 00:34:46,581 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:34:46" (1/1) ... [2019-11-16 00:34:46,582 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:34:46" (1/1) ... [2019-11-16 00:34:46,587 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:34:46" (1/1) ... [2019-11-16 00:34:46,589 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:34:46" (1/1) ... [2019-11-16 00:34:46,591 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:34:46" (1/1) ... [2019-11-16 00:34:46,593 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-16 00:34:46,594 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-16 00:34:46,594 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-16 00:34:46,594 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-16 00:34:46,595 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:34:46" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_81660b7e-4593-4b1a-997f-59cf22871a66/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-16 00:34:46,655 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-11-16 00:34:46,655 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2019-11-16 00:34:46,655 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-16 00:34:46,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-16 00:34:46,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-16 00:34:46,656 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-16 00:34:46,896 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-16 00:34:46,896 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-16 00:34:46,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:34:46 BoogieIcfgContainer [2019-11-16 00:34:46,897 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-16 00:34:46,898 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-16 00:34:46,899 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-16 00:34:46,901 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-16 00:34:46,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:34:46" (1/3) ... [2019-11-16 00:34:46,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f9affc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:34:46, skipping insertion in model container [2019-11-16 00:34:46,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:34:46" (2/3) ... [2019-11-16 00:34:46,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f9affc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:34:46, skipping insertion in model container [2019-11-16 00:34:46,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:34:46" (3/3) ... [2019-11-16 00:34:46,905 INFO L109 eAbstractionObserver]: Analyzing ICFG elimination_max_rec.c [2019-11-16 00:34:46,915 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-16 00:34:46,922 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-11-16 00:34:46,940 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-11-16 00:34:46,958 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-16 00:34:46,958 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-16 00:34:46,959 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-16 00:34:46,959 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-16 00:34:46,959 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-16 00:34:46,959 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-16 00:34:46,959 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-16 00:34:46,960 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-16 00:34:46,974 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-11-16 00:34:46,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-16 00:34:46,980 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:34:46,981 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:34:46,982 INFO L410 AbstractCegarLoop]: === Iteration 1 === [checkErr0ASSERT_VIOLATIONERROR_FUNCTION, checkErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:34:46,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:34:46,988 INFO L82 PathProgramCache]: Analyzing trace with hash 121169294, now seen corresponding path program 1 times [2019-11-16 00:34:46,996 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:34:46,996 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626271906] [2019-11-16 00:34:46,997 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:34:46,997 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:34:46,997 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:34:47,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:34:47,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:34:47,232 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626271906] [2019-11-16 00:34:47,233 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:34:47,233 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-16 00:34:47,234 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979875239] [2019-11-16 00:34:47,238 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-16 00:34:47,238 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:34:47,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-16 00:34:47,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-16 00:34:47,256 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 5 states. [2019-11-16 00:34:47,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:34:47,452 INFO L93 Difference]: Finished difference Result 67 states and 87 transitions. [2019-11-16 00:34:47,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-16 00:34:47,453 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2019-11-16 00:34:47,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:34:47,469 INFO L225 Difference]: With dead ends: 67 [2019-11-16 00:34:47,470 INFO L226 Difference]: Without dead ends: 44 [2019-11-16 00:34:47,475 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-16 00:34:47,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-11-16 00:34:47,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2019-11-16 00:34:47,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-16 00:34:47,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2019-11-16 00:34:47,523 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 8 [2019-11-16 00:34:47,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:34:47,523 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2019-11-16 00:34:47,523 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-16 00:34:47,524 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2019-11-16 00:34:47,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-16 00:34:47,525 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:34:47,526 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:34:47,526 INFO L410 AbstractCegarLoop]: === Iteration 2 === [checkErr0ASSERT_VIOLATIONERROR_FUNCTION, checkErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:34:47,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:34:47,526 INFO L82 PathProgramCache]: Analyzing trace with hash -557798522, now seen corresponding path program 1 times [2019-11-16 00:34:47,527 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:34:47,527 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389048181] [2019-11-16 00:34:47,527 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:34:47,527 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:34:47,528 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:34:47,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:34:47,717 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:34:47,718 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389048181] [2019-11-16 00:34:47,718 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951590276] [2019-11-16 00:34:47,718 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_81660b7e-4593-4b1a-997f-59cf22871a66/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:34:47,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:34:47,799 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-16 00:34:47,807 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:34:47,904 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:34:47,936 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:34:47,936 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:34:47,936 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2019-11-16 00:34:47,937 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208568966] [2019-11-16 00:34:47,938 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-16 00:34:47,938 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:34:47,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-16 00:34:47,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-11-16 00:34:47,939 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand 10 states. [2019-11-16 00:34:48,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:34:48,289 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2019-11-16 00:34:48,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-16 00:34:48,290 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2019-11-16 00:34:48,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:34:48,291 INFO L225 Difference]: With dead ends: 44 [2019-11-16 00:34:48,291 INFO L226 Difference]: Without dead ends: 42 [2019-11-16 00:34:48,292 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2019-11-16 00:34:48,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-11-16 00:34:48,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 17. [2019-11-16 00:34:48,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-16 00:34:48,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2019-11-16 00:34:48,297 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 14 [2019-11-16 00:34:48,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:34:48,297 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2019-11-16 00:34:48,297 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-16 00:34:48,298 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2019-11-16 00:34:48,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-16 00:34:48,298 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:34:48,299 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:34:48,503 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:34:48,503 INFO L410 AbstractCegarLoop]: === Iteration 3 === [checkErr0ASSERT_VIOLATIONERROR_FUNCTION, checkErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:34:48,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:34:48,504 INFO L82 PathProgramCache]: Analyzing trace with hash -152930088, now seen corresponding path program 1 times [2019-11-16 00:34:48,504 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:34:48,504 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458796591] [2019-11-16 00:34:48,504 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:34:48,504 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:34:48,505 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:34:48,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:34:48,615 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Undeclared function symbol (const Int) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.term(NoopScript.java:478) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.term(WrapperScript.java:250) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.term(WrapperScript.java:250) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.SmtUtils.termWithLocalSimplification(SmtUtils.java:1305) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.SmtUtils.termWithLocalSimplification(SmtUtils.java:1186) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.TermTransferrer.convertApplicationTerm(TermTransferrer.java:182) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer$BuildApplicationTerm.walk(TermTransformer.java:339) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.transform(TermTransformer.java:272) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.computePredicates(NestedInterpolantsBuilder.java:574) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:172) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:305) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:207) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.checkFeasibility(TraceAbstractionRefinementEngine.java:244) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:160) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-16 00:34:48,621 INFO L168 Benchmark]: Toolchain (without parser) took 2380.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 950.1 MB in the beginning and 979.5 MB in the end (delta: -29.4 MB). Peak memory consumption was 94.9 MB. Max. memory is 11.5 GB. [2019-11-16 00:34:48,621 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-16 00:34:48,622 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -163.3 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-11-16 00:34:48,623 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.54 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-16 00:34:48,623 INFO L168 Benchmark]: Boogie Preprocessor took 23.16 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-16 00:34:48,624 INFO L168 Benchmark]: RCFGBuilder took 303.94 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 11.5 GB. [2019-11-16 00:34:48,625 INFO L168 Benchmark]: TraceAbstraction took 1720.25 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 979.5 MB in the end (delta: 110.2 MB). Peak memory consumption was 110.2 MB. Max. memory is 11.5 GB. [2019-11-16 00:34:48,628 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 296.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -163.3 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 33.54 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 23.16 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 303.94 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1720.25 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 979.5 MB in the end (delta: 110.2 MB). Peak memory consumption was 110.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Undeclared function symbol (const Int) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Undeclared function symbol (const Int): de.uni_freiburg.informatik.ultimate.logic.NoopScript.term(NoopScript.java:478) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-cad4683 [2019-11-16 00:34:50,930 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-16 00:34:50,932 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-16 00:34:50,942 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-16 00:34:50,943 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-16 00:34:50,944 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-16 00:34:50,945 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-16 00:34:50,947 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-16 00:34:50,949 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-16 00:34:50,950 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-16 00:34:50,951 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-16 00:34:50,952 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-16 00:34:50,952 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-16 00:34:50,953 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-16 00:34:50,954 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-16 00:34:50,956 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-16 00:34:50,956 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-16 00:34:50,957 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-16 00:34:50,960 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-16 00:34:50,962 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-16 00:34:50,964 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-16 00:34:50,965 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-16 00:34:50,966 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-16 00:34:50,967 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-16 00:34:50,970 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-16 00:34:50,971 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-16 00:34:50,971 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-16 00:34:50,972 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-16 00:34:50,973 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-16 00:34:50,974 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-16 00:34:50,974 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-16 00:34:50,975 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-16 00:34:50,976 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-16 00:34:50,977 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-16 00:34:50,978 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-16 00:34:50,978 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-16 00:34:50,979 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-16 00:34:50,979 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-16 00:34:50,980 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-16 00:34:50,981 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-16 00:34:50,981 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-16 00:34:50,982 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_81660b7e-4593-4b1a-997f-59cf22871a66/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-16 00:34:51,000 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-16 00:34:51,001 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-16 00:34:51,002 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-16 00:34:51,002 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-16 00:34:51,003 INFO L138 SettingsManager]: * Use SBE=true [2019-11-16 00:34:51,003 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-16 00:34:51,003 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-16 00:34:51,003 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-16 00:34:51,004 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-16 00:34:51,004 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-16 00:34:51,004 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-16 00:34:51,004 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-16 00:34:51,004 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-16 00:34:51,005 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-16 00:34:51,005 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-16 00:34:51,005 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-16 00:34:51,005 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-16 00:34:51,006 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-16 00:34:51,006 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-16 00:34:51,006 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-16 00:34:51,006 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-16 00:34:51,007 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-16 00:34:51,007 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-16 00:34:51,007 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-16 00:34:51,007 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-16 00:34:51,007 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-16 00:34:51,008 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-16 00:34:51,008 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-16 00:34:51,008 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-16 00:34:51,008 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-16 00:34:51,009 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_81660b7e-4593-4b1a-997f-59cf22871a66/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2b2876d557403fdc14b5f2a0ee96243fe1db281 [2019-11-16 00:34:51,039 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-16 00:34:51,056 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-16 00:34:51,059 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-16 00:34:51,062 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-16 00:34:51,062 INFO L275 PluginConnector]: CDTParser initialized [2019-11-16 00:34:51,063 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_81660b7e-4593-4b1a-997f-59cf22871a66/bin/uautomizer/../../sv-benchmarks/c/verifythis/elimination_max_rec.c [2019-11-16 00:34:51,129 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_81660b7e-4593-4b1a-997f-59cf22871a66/bin/uautomizer/data/e0d7fa4d9/8a3ac9e457ce408a9afa801135d23388/FLAG8e8d4be17 [2019-11-16 00:34:51,549 INFO L306 CDTParser]: Found 1 translation units. [2019-11-16 00:34:51,550 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_81660b7e-4593-4b1a-997f-59cf22871a66/sv-benchmarks/c/verifythis/elimination_max_rec.c [2019-11-16 00:34:51,556 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_81660b7e-4593-4b1a-997f-59cf22871a66/bin/uautomizer/data/e0d7fa4d9/8a3ac9e457ce408a9afa801135d23388/FLAG8e8d4be17 [2019-11-16 00:34:51,930 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_81660b7e-4593-4b1a-997f-59cf22871a66/bin/uautomizer/data/e0d7fa4d9/8a3ac9e457ce408a9afa801135d23388 [2019-11-16 00:34:51,934 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-16 00:34:51,936 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-16 00:34:51,937 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-16 00:34:51,937 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-16 00:34:51,940 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-16 00:34:51,941 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:34:51" (1/1) ... [2019-11-16 00:34:51,944 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4013ed7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:34:51, skipping insertion in model container [2019-11-16 00:34:51,945 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:34:51" (1/1) ... [2019-11-16 00:34:51,952 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-16 00:34:51,970 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-16 00:34:52,140 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-16 00:34:52,154 INFO L188 MainTranslator]: Completed pre-run [2019-11-16 00:34:52,177 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-16 00:34:52,193 INFO L192 MainTranslator]: Completed translation [2019-11-16 00:34:52,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:34:52 WrapperNode [2019-11-16 00:34:52,193 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-16 00:34:52,194 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-16 00:34:52,194 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-16 00:34:52,194 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-16 00:34:52,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:34:52" (1/1) ... [2019-11-16 00:34:52,275 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:34:52" (1/1) ... [2019-11-16 00:34:52,297 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-16 00:34:52,297 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-16 00:34:52,297 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-16 00:34:52,298 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-16 00:34:52,307 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:34:52" (1/1) ... [2019-11-16 00:34:52,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:34:52" (1/1) ... [2019-11-16 00:34:52,310 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:34:52" (1/1) ... [2019-11-16 00:34:52,310 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:34:52" (1/1) ... [2019-11-16 00:34:52,318 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:34:52" (1/1) ... [2019-11-16 00:34:52,321 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:34:52" (1/1) ... [2019-11-16 00:34:52,323 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:34:52" (1/1) ... [2019-11-16 00:34:52,326 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-16 00:34:52,327 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-16 00:34:52,327 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-16 00:34:52,327 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-16 00:34:52,328 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:34:52" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_81660b7e-4593-4b1a-997f-59cf22871a66/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-16 00:34:52,386 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-11-16 00:34:52,386 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2019-11-16 00:34:52,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-16 00:34:52,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-16 00:34:52,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-16 00:34:52,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-16 00:34:52,652 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-16 00:34:52,657 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-16 00:34:52,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:34:52 BoogieIcfgContainer [2019-11-16 00:34:52,658 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-16 00:34:52,660 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-16 00:34:52,660 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-16 00:34:52,663 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-16 00:34:52,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:34:51" (1/3) ... [2019-11-16 00:34:52,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e1bf870 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:34:52, skipping insertion in model container [2019-11-16 00:34:52,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:34:52" (2/3) ... [2019-11-16 00:34:52,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e1bf870 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:34:52, skipping insertion in model container [2019-11-16 00:34:52,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:34:52" (3/3) ... [2019-11-16 00:34:52,666 INFO L109 eAbstractionObserver]: Analyzing ICFG elimination_max_rec.c [2019-11-16 00:34:52,676 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-16 00:34:52,682 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-11-16 00:34:52,691 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-11-16 00:34:52,708 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-16 00:34:52,709 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-16 00:34:52,709 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-16 00:34:52,709 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-16 00:34:52,709 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-16 00:34:52,709 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-16 00:34:52,709 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-16 00:34:52,709 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-16 00:34:52,723 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-11-16 00:34:52,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-16 00:34:52,728 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:34:52,729 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:34:52,730 INFO L410 AbstractCegarLoop]: === Iteration 1 === [checkErr1ASSERT_VIOLATIONERROR_FUNCTION, checkErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:34:52,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:34:52,735 INFO L82 PathProgramCache]: Analyzing trace with hash 121169294, now seen corresponding path program 1 times [2019-11-16 00:34:52,744 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-16 00:34:52,745 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1739585134] [2019-11-16 00:34:52,745 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_81660b7e-4593-4b1a-997f-59cf22871a66/bin/uautomizer/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-16 00:34:52,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:34:52,866 INFO L256 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-16 00:34:52,870 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:34:52,977 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:34:53,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:34:53,027 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-16 00:34:53,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:34:53,230 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1739585134] [2019-11-16 00:34:53,231 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:34:53,231 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2019-11-16 00:34:53,231 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349909868] [2019-11-16 00:34:53,234 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-16 00:34:53,235 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-16 00:34:53,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-16 00:34:53,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-11-16 00:34:53,246 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 10 states. [2019-11-16 00:34:54,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:34:54,485 INFO L93 Difference]: Finished difference Result 74 states and 94 transitions. [2019-11-16 00:34:54,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-16 00:34:54,488 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 8 [2019-11-16 00:34:54,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:34:54,501 INFO L225 Difference]: With dead ends: 74 [2019-11-16 00:34:54,501 INFO L226 Difference]: Without dead ends: 46 [2019-11-16 00:34:54,509 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2019-11-16 00:34:54,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-11-16 00:34:54,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 38. [2019-11-16 00:34:54,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-11-16 00:34:54,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2019-11-16 00:34:54,584 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 8 [2019-11-16 00:34:54,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:34:54,585 INFO L462 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2019-11-16 00:34:54,585 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-16 00:34:54,586 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2019-11-16 00:34:54,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-16 00:34:54,587 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:34:54,588 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:34:54,790 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-16 00:34:54,791 INFO L410 AbstractCegarLoop]: === Iteration 2 === [checkErr1ASSERT_VIOLATIONERROR_FUNCTION, checkErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:34:54,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:34:54,792 INFO L82 PathProgramCache]: Analyzing trace with hash -152930088, now seen corresponding path program 1 times [2019-11-16 00:34:54,793 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-16 00:34:54,794 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1312263291] [2019-11-16 00:34:54,794 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_81660b7e-4593-4b1a-997f-59cf22871a66/bin/uautomizer/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-16 00:34:54,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:34:54,937 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-16 00:34:54,939 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:34:54,976 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2019-11-16 00:34:54,977 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-16 00:34:54,985 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:34:54,986 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-16 00:34:54,986 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:7, output treesize:6 [2019-11-16 00:34:57,062 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_check_~a.base_BEFORE_CALL_1 (_ BitVec 32))) (= ((as const (Array (_ BitVec 32) (_ BitVec 32))) (_ bv0 32)) (select |c_#memory_int| v_check_~a.base_BEFORE_CALL_1))) is different from true [2019-11-16 00:34:57,086 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:34:57,120 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2019-11-16 00:34:57,120 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-16 00:35:27,473 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:35:27,474 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1312263291] [2019-11-16 00:35:27,474 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:35:27,474 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2019-11-16 00:35:27,474 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711114708] [2019-11-16 00:35:27,476 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-16 00:35:27,476 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-16 00:35:27,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-16 00:35:27,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=92, Unknown=16, NotChecked=20, Total=156 [2019-11-16 00:35:27,477 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand 13 states. [2019-11-16 00:35:31,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:35:31,808 INFO L93 Difference]: Finished difference Result 42 states and 50 transitions. [2019-11-16 00:35:31,809 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-16 00:35:31,809 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 17 [2019-11-16 00:35:31,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:35:31,811 INFO L225 Difference]: With dead ends: 42 [2019-11-16 00:35:31,811 INFO L226 Difference]: Without dead ends: 24 [2019-11-16 00:35:31,812 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 36.5s TimeCoverageRelationStatistics Valid=58, Invalid=168, Unknown=18, NotChecked=28, Total=272 [2019-11-16 00:35:31,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-16 00:35:31,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2019-11-16 00:35:31,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-16 00:35:31,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2019-11-16 00:35:31,817 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 17 [2019-11-16 00:35:31,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:35:31,818 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2019-11-16 00:35:31,818 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-16 00:35:31,818 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2019-11-16 00:35:31,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-16 00:35:31,819 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:35:31,819 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2019-11-16 00:35:32,022 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-16 00:35:32,022 INFO L410 AbstractCegarLoop]: === Iteration 3 === [checkErr1ASSERT_VIOLATIONERROR_FUNCTION, checkErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:35:32,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:35:32,023 INFO L82 PathProgramCache]: Analyzing trace with hash 531240830, now seen corresponding path program 1 times [2019-11-16 00:35:32,023 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-16 00:35:32,024 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [939790102] [2019-11-16 00:35:32,024 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_81660b7e-4593-4b1a-997f-59cf22871a66/bin/uautomizer/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-16 00:35:32,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:35:32,178 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 28 conjunts are in the unsatisfiable core [2019-11-16 00:35:32,180 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:35:32,596 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:35:32,644 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:35:32,644 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-16 00:35:32,925 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:35:33,147 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:35:33,148 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [939790102] [2019-11-16 00:35:33,148 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:35:33,148 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 20 [2019-11-16 00:35:33,149 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198571889] [2019-11-16 00:35:33,149 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-11-16 00:35:33,149 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-16 00:35:33,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-11-16 00:35:33,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2019-11-16 00:35:33,150 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 20 states. [2019-11-16 00:35:34,784 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 29 [2019-11-16 00:35:35,717 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 24 [2019-11-16 00:35:36,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:35:36,033 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2019-11-16 00:35:36,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-11-16 00:35:36,036 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 20 [2019-11-16 00:35:36,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:35:36,037 INFO L225 Difference]: With dead ends: 45 [2019-11-16 00:35:36,037 INFO L226 Difference]: Without dead ends: 43 [2019-11-16 00:35:36,038 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=412, Invalid=1228, Unknown=0, NotChecked=0, Total=1640 [2019-11-16 00:35:36,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-11-16 00:35:36,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 33. [2019-11-16 00:35:36,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-11-16 00:35:36,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2019-11-16 00:35:36,045 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 20 [2019-11-16 00:35:36,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:35:36,045 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2019-11-16 00:35:36,045 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-11-16 00:35:36,045 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2019-11-16 00:35:36,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-16 00:35:36,046 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:35:36,046 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2019-11-16 00:35:36,246 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-16 00:35:36,247 INFO L410 AbstractCegarLoop]: === Iteration 4 === [checkErr1ASSERT_VIOLATIONERROR_FUNCTION, checkErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:35:36,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:35:36,247 INFO L82 PathProgramCache]: Analyzing trace with hash 846664570, now seen corresponding path program 1 times [2019-11-16 00:35:36,247 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-16 00:35:36,247 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [949626249] [2019-11-16 00:35:36,248 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_81660b7e-4593-4b1a-997f-59cf22871a66/bin/uautomizer/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-16 00:35:36,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:35:36,353 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-16 00:35:36,354 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:35:36,358 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2019-11-16 00:35:36,359 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-16 00:35:36,361 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:35:36,361 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-16 00:35:36,362 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:7, output treesize:6 [2019-11-16 00:35:36,396 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 23 [2019-11-16 00:35:36,397 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-16 00:35:36,401 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:35:36,402 INFO L496 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2019-11-16 00:35:36,402 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:29, output treesize:21 [2019-11-16 00:35:36,420 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-16 00:35:36,420 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-16 00:36:10,756 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-16 00:36:10,756 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [949626249] [2019-11-16 00:36:10,757 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:36:10,757 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2019-11-16 00:36:10,757 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806877866] [2019-11-16 00:36:10,757 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-16 00:36:10,757 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-16 00:36:10,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-16 00:36:10,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=89, Unknown=17, NotChecked=0, Total=132 [2019-11-16 00:36:10,758 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 12 states. [2019-11-16 00:36:16,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:36:16,963 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2019-11-16 00:36:16,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-16 00:36:16,967 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 20 [2019-11-16 00:36:16,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:36:16,967 INFO L225 Difference]: With dead ends: 39 [2019-11-16 00:36:16,967 INFO L226 Difference]: Without dead ends: 0 [2019-11-16 00:36:16,968 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 40.4s TimeCoverageRelationStatistics Valid=47, Invalid=143, Unknown=20, NotChecked=0, Total=210 [2019-11-16 00:36:16,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-16 00:36:16,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-16 00:36:16,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-16 00:36:16,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-16 00:36:16,969 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2019-11-16 00:36:16,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:36:16,969 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-16 00:36:16,969 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-16 00:36:16,969 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-16 00:36:16,970 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-16 00:36:17,172 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-16 00:36:17,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-16 00:36:18,189 WARN L191 SmtUtils]: Spent 711.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 61 [2019-11-16 00:36:18,191 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-16 00:36:18,191 INFO L443 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-16 00:36:18,191 INFO L443 ceAbstractionStarter]: For program point L-1-1(line -1) no Hoare annotation was computed. [2019-11-16 00:36:18,191 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-16 00:36:18,191 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-16 00:36:18,191 INFO L439 ceAbstractionStarter]: At program point L40(lines 35 41) the Hoare annotation is: (bvsge ULTIMATE.start_main_~n~0 (_ bv0 32)) [2019-11-16 00:36:18,192 INFO L439 ceAbstractionStarter]: At program point L39(line 39) the Hoare annotation is: (let ((.cse0 ((as const (Array (_ BitVec 32) (_ BitVec 32))) (_ bv0 32)))) (and (= .cse0 (select |#memory_int| ULTIMATE.start_main_~a~0.base)) (= .cse0 (select |#memory_int| |ULTIMATE.start_main_#t~malloc10.base|)) (bvsge ULTIMATE.start_main_~n~0 (_ bv0 32)))) [2019-11-16 00:36:18,192 INFO L443 ceAbstractionStarter]: For program point L39-1(line 39) no Hoare annotation was computed. [2019-11-16 00:36:18,192 INFO L446 ceAbstractionStarter]: At program point checkENTRY(lines 10 33) the Hoare annotation is: true [2019-11-16 00:36:18,192 INFO L443 ceAbstractionStarter]: For program point L19(lines 19 20) no Hoare annotation was computed. [2019-11-16 00:36:18,192 INFO L443 ceAbstractionStarter]: For program point checkErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-16 00:36:18,192 INFO L439 ceAbstractionStarter]: At program point L19-2(lines 19 20) the Hoare annotation is: (let ((.cse6 ((as const (Array (_ BitVec 32) (_ BitVec 32))) (_ bv0 32)))) (let ((.cse0 (not (= .cse6 (select |#memory_int| |check_#in~a.base|)))) (.cse1 (not (bvsge |check_#in~n| (_ bv0 32)))) (.cse5 (not (= (bvadd |check_#in~y| (_ bv1 32)) |check_#in~n|))) (.cse2 (not (bvsge (_ bv0 32) check_~y))) (.cse4 (= (bvadd check_~n (_ bv4294967295 32)) check_~y)) (.cse3 (= (bvadd check___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)))) (and (or (not (= (_ bv1 32) |check_#in~x|)) (bvsge (_ bv0 32) |check_#in~y|) .cse0 .cse1 (and .cse2 (= (bvadd check_~x (_ bv4294967294 32)) (_ bv0 32)) .cse3 .cse4) .cse5) (or (or (not (bvslt |check_#in~y| |check_#in~n|)) (not (bvsle (_ bv0 32) |check_#in~x|)) (not (bvsle (_ bv0 32) (bvadd |check_#in~x| (_ bv1 32))))) .cse0 (and (= .cse6 (select |#memory_int| check_~a.base)) (bvsle (_ bv0 32) (bvadd check_~x (_ bv1 32))) (bvsle (_ bv0 32) check_~x) (bvslt check_~y check_~n) (not (= check___VERIFIER_assert_~cond (_ bv0 32))))) (or (not (= |check_#in~x| (_ bv0 32))) .cse0 .cse1 .cse5 (and .cse2 .cse4 (= (bvadd check_~x (_ bv4294967295 32)) (_ bv0 32)) .cse3))))) [2019-11-16 00:36:18,192 INFO L443 ceAbstractionStarter]: For program point L11(line 11) no Hoare annotation was computed. [2019-11-16 00:36:18,193 INFO L443 ceAbstractionStarter]: For program point checkFINAL(lines 10 33) no Hoare annotation was computed. [2019-11-16 00:36:18,193 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-16 00:36:18,193 INFO L443 ceAbstractionStarter]: For program point L5-1(line 5) no Hoare annotation was computed. [2019-11-16 00:36:18,193 INFO L443 ceAbstractionStarter]: For program point L5-3(line 5) no Hoare annotation was computed. [2019-11-16 00:36:18,193 INFO L443 ceAbstractionStarter]: For program point L5-4(line 5) no Hoare annotation was computed. [2019-11-16 00:36:18,193 INFO L443 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2019-11-16 00:36:18,193 INFO L443 ceAbstractionStarter]: For program point checkEXIT(lines 10 33) no Hoare annotation was computed. [2019-11-16 00:36:18,193 INFO L443 ceAbstractionStarter]: For program point checkErr1ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-16 00:36:18,193 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-16 00:36:18,194 INFO L443 ceAbstractionStarter]: For program point L4-1(lines 4 6) no Hoare annotation was computed. [2019-11-16 00:36:18,207 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation cannot identify Boogie2SMT function ~bvsge32 [2019-11-16 00:36:18,208 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation cannot identify Boogie2SMT function ~bvsge32 [2019-11-16 00:36:18,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 12:36:18 BoogieIcfgContainer [2019-11-16 00:36:18,211 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-16 00:36:18,211 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-16 00:36:18,211 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-16 00:36:18,212 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-16 00:36:18,212 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:34:52" (3/4) ... [2019-11-16 00:36:18,215 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-16 00:36:18,222 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure check [2019-11-16 00:36:18,226 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2019-11-16 00:36:18,227 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-16 00:36:18,227 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-16 00:36:18,273 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_81660b7e-4593-4b1a-997f-59cf22871a66/bin/uautomizer/witness.graphml [2019-11-16 00:36:18,274 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-16 00:36:18,275 INFO L168 Benchmark]: Toolchain (without parser) took 86339.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 203.9 MB). Free memory was 952.3 MB in the beginning and 1.0 GB in the end (delta: -59.4 MB). Peak memory consumption was 144.6 MB. Max. memory is 11.5 GB. [2019-11-16 00:36:18,276 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-16 00:36:18,276 INFO L168 Benchmark]: CACSL2BoogieTranslator took 256.97 ms. Allocated memory is still 1.0 GB. Free memory was 952.3 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-16 00:36:18,277 INFO L168 Benchmark]: Boogie Procedure Inliner took 103.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -198.2 MB). Peak memory consumption was 12.3 MB. Max. memory is 11.5 GB. [2019-11-16 00:36:18,277 INFO L168 Benchmark]: Boogie Preprocessor took 29.43 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-16 00:36:18,278 INFO L168 Benchmark]: RCFGBuilder took 331.57 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. [2019-11-16 00:36:18,278 INFO L168 Benchmark]: TraceAbstraction took 85551.26 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 53.5 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 101.1 MB). Peak memory consumption was 154.5 MB. Max. memory is 11.5 GB. [2019-11-16 00:36:18,279 INFO L168 Benchmark]: Witness Printer took 62.71 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 7.2 MB). Peak memory consumption was 7.2 MB. Max. memory is 11.5 GB. [2019-11-16 00:36:18,281 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 256.97 ms. Allocated memory is still 1.0 GB. Free memory was 952.3 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 103.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -198.2 MB). Peak memory consumption was 12.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 29.43 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 331.57 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 85551.26 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 53.5 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 101.1 MB). Peak memory consumption was 154.5 MB. Max. memory is 11.5 GB. * Witness Printer took 62.71 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 7.2 MB). Peak memory consumption was 7.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation cannot identify Boogie2SMT function ~bvsge32 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation cannot identify Boogie2SMT function ~bvsge32 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 35]: Loop Invariant [2019-11-16 00:36:18,288 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation cannot identify Boogie2SMT function ~bvsge32 [2019-11-16 00:36:18,288 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation cannot identify Boogie2SMT function ~bvsge32 Derived loop invariant: NULL - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 locations, 2 error locations. Result: SAFE, OverallTime: 85.4s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 14.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.0s, HoareTripleCheckerStatistics: 49 SDtfs, 191 SDslu, 237 SDs, 0 SdLazy, 359 SolverSat, 97 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 162 GetRequests, 75 SyntacticMatches, 3 SemanticMatches, 84 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 81.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=1, 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, 21 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 16 PreInvPairs, 21 NumberOfFragments, 153 HoareAnnotationTreeSize, 16 FomulaSimplifications, 443 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 4 FomulaSimplificationsInter, 832 FormulaSimplificationTreeSizeReductionInter, 0.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 68.2s InterpolantComputationTime, 65 NumberOfCodeBlocks, 65 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 122 ConstructedInterpolants, 20 QuantifiedInterpolants, 16512 SizeOfPredicates, 50 NumberOfNonLiveVariables, 270 ConjunctsInSsa, 57 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 28/52 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...