./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-with-pointer/simple-recursive.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_823e330d-7be9-497f-bd1f-eb460a82917c/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_823e330d-7be9-497f-bd1f-eb460a82917c/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_823e330d-7be9-497f-bd1f-eb460a82917c/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_823e330d-7be9-497f-bd1f-eb460a82917c/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive-with-pointer/simple-recursive.c -s /tmp/vcloud-vcloud-master/worker/run_dir_823e330d-7be9-497f-bd1f-eb460a82917c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_823e330d-7be9-497f-bd1f-eb460a82917c/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 676e29c704408ba5cb62ef3917e5c4d703cda2e4 ................................................................................................................................................................................................................................................................................................................... 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_823e330d-7be9-497f-bd1f-eb460a82917c/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_823e330d-7be9-497f-bd1f-eb460a82917c/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_823e330d-7be9-497f-bd1f-eb460a82917c/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_823e330d-7be9-497f-bd1f-eb460a82917c/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive-with-pointer/simple-recursive.c -s /tmp/vcloud-vcloud-master/worker/run_dir_823e330d-7be9-497f-bd1f-eb460a82917c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_823e330d-7be9-497f-bd1f-eb460a82917c/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 676e29c704408ba5cb62ef3917e5c4d703cda2e4 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-26 02:21:07,209 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:21:07,211 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:21:07,225 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:21:07,225 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:21:07,226 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:21:07,228 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:21:07,236 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:21:07,240 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:21:07,244 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:21:07,245 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:21:07,246 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:21:07,246 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:21:07,248 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:21:07,249 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:21:07,250 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:21:07,251 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:21:07,251 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:21:07,254 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:21:07,257 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:21:07,260 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:21:07,263 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:21:07,264 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:21:07,265 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:21:07,268 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:21:07,268 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:21:07,269 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:21:07,270 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:21:07,270 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:21:07,271 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:21:07,271 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:21:07,272 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:21:07,273 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:21:07,274 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:21:07,275 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:21:07,275 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:21:07,276 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:21:07,276 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:21:07,276 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:21:07,277 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:21:07,278 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:21:07,279 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_823e330d-7be9-497f-bd1f-eb460a82917c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 02:21:07,311 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:21:07,311 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:21:07,312 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:21:07,312 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:21:07,312 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:21:07,312 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:21:07,312 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:21:07,313 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:21:07,313 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:21:07,313 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:21:07,314 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:21:07,314 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:21:07,315 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:21:07,315 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:21:07,315 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:21:07,316 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:21:07,316 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:21:07,316 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:21:07,316 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:21:07,316 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:21:07,317 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:21:07,317 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:21:07,317 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:21:07,317 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:21:07,318 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:21:07,318 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:21:07,318 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:21:07,318 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:21:07,319 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:21:07,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:21:07,319 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:21:07,320 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:21:07,320 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:21:07,320 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:21:07,320 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:21:07,321 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:21:07,322 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:21:07,322 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_823e330d-7be9-497f-bd1f-eb460a82917c/bin/utaipan 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 -> Taipan 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 -> 676e29c704408ba5cb62ef3917e5c4d703cda2e4 [2019-11-26 02:21:07,485 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:21:07,494 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:21:07,498 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:21:07,499 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:21:07,500 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:21:07,500 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_823e330d-7be9-497f-bd1f-eb460a82917c/bin/utaipan/../../sv-benchmarks/c/recursive-with-pointer/simple-recursive.c [2019-11-26 02:21:07,563 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_823e330d-7be9-497f-bd1f-eb460a82917c/bin/utaipan/data/8fb6b04f4/e9d47ae53baf436e88d3b6b55c29ddab/FLAGa9dbc8597 [2019-11-26 02:21:07,931 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:21:07,931 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_823e330d-7be9-497f-bd1f-eb460a82917c/sv-benchmarks/c/recursive-with-pointer/simple-recursive.c [2019-11-26 02:21:07,935 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_823e330d-7be9-497f-bd1f-eb460a82917c/bin/utaipan/data/8fb6b04f4/e9d47ae53baf436e88d3b6b55c29ddab/FLAGa9dbc8597 [2019-11-26 02:21:08,368 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_823e330d-7be9-497f-bd1f-eb460a82917c/bin/utaipan/data/8fb6b04f4/e9d47ae53baf436e88d3b6b55c29ddab [2019-11-26 02:21:08,370 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:21:08,370 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:21:08,371 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:21:08,371 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:21:08,374 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:21:08,375 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:21:08" (1/1) ... [2019-11-26 02:21:08,377 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52242d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:21:08, skipping insertion in model container [2019-11-26 02:21:08,377 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:21:08" (1/1) ... [2019-11-26 02:21:08,384 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:21:08,397 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:21:08,528 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:21:08,594 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:21:08,611 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:21:08,626 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:21:08,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:21:08 WrapperNode [2019-11-26 02:21:08,627 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:21:08,627 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:21:08,627 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:21:08,628 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:21:08,635 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:21:08" (1/1) ... [2019-11-26 02:21:08,642 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:21:08" (1/1) ... [2019-11-26 02:21:08,655 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:21:08,655 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:21:08,655 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:21:08,655 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:21:08,663 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:21:08" (1/1) ... [2019-11-26 02:21:08,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:21:08" (1/1) ... [2019-11-26 02:21:08,665 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:21:08" (1/1) ... [2019-11-26 02:21:08,669 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:21:08" (1/1) ... [2019-11-26 02:21:08,675 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:21:08" (1/1) ... [2019-11-26 02:21:08,677 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:21:08" (1/1) ... [2019-11-26 02:21:08,677 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:21:08" (1/1) ... [2019-11-26 02:21:08,679 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:21:08,680 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:21:08,680 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:21:08,680 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:21:08,681 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:21:08" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_823e330d-7be9-497f-bd1f-eb460a82917c/bin/utaipan/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 [2019-11-26 02:21:08,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-26 02:21:08,731 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2019-11-26 02:21:08,731 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2019-11-26 02:21:08,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:21:08,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:21:08,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-26 02:21:08,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-26 02:21:08,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:21:08,732 INFO L130 BoogieDeclarations]: Found specification of procedure plus [2019-11-26 02:21:08,733 INFO L138 BoogieDeclarations]: Found implementation of procedure plus [2019-11-26 02:21:08,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:21:08,945 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:21:08,945 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-26 02:21:08,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:21:08 BoogieIcfgContainer [2019-11-26 02:21:08,946 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:21:08,947 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:21:08,947 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:21:08,950 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:21:08,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:21:08" (1/3) ... [2019-11-26 02:21:08,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1034b357 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:21:08, skipping insertion in model container [2019-11-26 02:21:08,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:21:08" (2/3) ... [2019-11-26 02:21:08,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1034b357 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:21:08, skipping insertion in model container [2019-11-26 02:21:08,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:21:08" (3/3) ... [2019-11-26 02:21:08,953 INFO L109 eAbstractionObserver]: Analyzing ICFG simple-recursive.c [2019-11-26 02:21:08,964 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:21:08,969 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:21:08,978 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:21:08,997 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:21:08,997 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:21:08,997 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:21:08,997 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:21:08,998 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:21:08,998 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:21:08,998 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:21:08,998 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:21:09,012 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2019-11-26 02:21:09,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-26 02:21:09,017 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:21:09,018 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-26 02:21:09,018 INFO L410 AbstractCegarLoop]: === Iteration 1 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:21:09,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:21:09,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1859053861, now seen corresponding path program 1 times [2019-11-26 02:21:09,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:21:09,037 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401901769] [2019-11-26 02:21:09,037 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:21:09,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:21:09,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:21:09,229 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401901769] [2019-11-26 02:21:09,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:21:09,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-26 02:21:09,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271961346] [2019-11-26 02:21:09,234 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-26 02:21:09,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:21:09,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-26 02:21:09,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:21:09,247 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 5 states. [2019-11-26 02:21:09,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:21:09,328 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2019-11-26 02:21:09,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-26 02:21:09,330 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2019-11-26 02:21:09,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:21:09,336 INFO L225 Difference]: With dead ends: 28 [2019-11-26 02:21:09,336 INFO L226 Difference]: Without dead ends: 13 [2019-11-26 02:21:09,339 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-26 02:21:09,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-11-26 02:21:09,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2019-11-26 02:21:09,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-26 02:21:09,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-11-26 02:21:09,368 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 6 [2019-11-26 02:21:09,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:21:09,369 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-11-26 02:21:09,369 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-26 02:21:09,369 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-11-26 02:21:09,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-26 02:21:09,369 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:21:09,370 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:21:09,370 INFO L410 AbstractCegarLoop]: === Iteration 2 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:21:09,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:21:09,370 INFO L82 PathProgramCache]: Analyzing trace with hash -602700150, now seen corresponding path program 1 times [2019-11-26 02:21:09,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:21:09,371 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278821167] [2019-11-26 02:21:09,371 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:21:09,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:21:09,520 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:21:09,521 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278821167] [2019-11-26 02:21:09,521 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426687052] [2019-11-26 02:21:09,521 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_823e330d-7be9-497f-bd1f-eb460a82917c/bin/utaipan/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 [2019-11-26 02:21:09,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:21:09,575 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 36 conjunts are in the unsatisfiable core [2019-11-26 02:21:09,581 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:21:09,632 INFO L377 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 11 treesize of output 7 [2019-11-26 02:21:09,633 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:21:09,636 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:21:09,637 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:21:09,637 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2019-11-26 02:21:09,653 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 25 treesize of output 13 [2019-11-26 02:21:09,654 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:21:09,657 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:21:09,658 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:21:09,658 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2019-11-26 02:21:09,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:21:09,743 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:21:09,899 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:21:09,899 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1645584023] [2019-11-26 02:21:09,919 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2019-11-26 02:21:09,919 INFO L166 IcfgInterpreter]: Building call graph [2019-11-26 02:21:09,925 FATAL L310 FreeRefinementEngine]: Exception during interpolant generation: IllegalArgumentException [2019-11-26 02:21:10,129 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:21:10,130 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) 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.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:297) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:190) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:180) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) 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:333) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) 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) [2019-11-26 02:21:10,138 INFO L168 Benchmark]: Toolchain (without parser) took 1765.90 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 951.4 MB in the beginning and 1.0 GB in the end (delta: -85.5 MB). Peak memory consumption was 61.3 MB. Max. memory is 11.5 GB. [2019-11-26 02:21:10,139 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 966.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:21:10,140 INFO L168 Benchmark]: CACSL2BoogieTranslator took 255.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -188.9 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-11-26 02:21:10,141 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.43 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. [2019-11-26 02:21:10,142 INFO L168 Benchmark]: Boogie Preprocessor took 24.52 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. [2019-11-26 02:21:10,143 INFO L168 Benchmark]: RCFGBuilder took 266.93 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: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:21:10,144 INFO L168 Benchmark]: TraceAbstraction took 1187.82 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 81.0 MB). Peak memory consumption was 81.0 MB. Max. memory is 11.5 GB. [2019-11-26 02:21:10,150 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 966.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 255.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -188.9 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 27.43 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. * Boogie Preprocessor took 24.52 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 266.93 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: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1187.82 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 81.0 MB). Peak memory consumption was 81.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalArgumentException: Recursive programs are not supported. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalArgumentException: Recursive programs are not supported.: de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-6b5699a [2019-11-26 02:21:12,106 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:21:12,108 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:21:12,124 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:21:12,125 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:21:12,126 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:21:12,128 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:21:12,137 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:21:12,142 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:21:12,145 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:21:12,146 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:21:12,148 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:21:12,148 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:21:12,150 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:21:12,152 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:21:12,153 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:21:12,155 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:21:12,155 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:21:12,158 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:21:12,161 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:21:12,165 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:21:12,169 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:21:12,170 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:21:12,171 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:21:12,175 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:21:12,175 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:21:12,175 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:21:12,177 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:21:12,177 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:21:12,178 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:21:12,178 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:21:12,179 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:21:12,180 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:21:12,181 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:21:12,181 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:21:12,182 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:21:12,183 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:21:12,183 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:21:12,183 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:21:12,184 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:21:12,185 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:21:12,186 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_823e330d-7be9-497f-bd1f-eb460a82917c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-11-26 02:21:12,210 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:21:12,220 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:21:12,221 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:21:12,221 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:21:12,222 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:21:12,222 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:21:12,222 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:21:12,222 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:21:12,222 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:21:12,223 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:21:12,224 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:21:12,224 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:21:12,224 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:21:12,225 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:21:12,225 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:21:12,225 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:21:12,226 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-26 02:21:12,226 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-26 02:21:12,226 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-26 02:21:12,226 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:21:12,227 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:21:12,227 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-26 02:21:12,227 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:21:12,227 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:21:12,228 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-26 02:21:12,228 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:21:12,228 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:21:12,228 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:21:12,229 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:21:12,229 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:21:12,230 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:21:12,230 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-11-26 02:21:12,230 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-26 02:21:12,230 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:21:12,231 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:21:12,231 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_823e330d-7be9-497f-bd1f-eb460a82917c/bin/utaipan 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 -> Taipan 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 -> 676e29c704408ba5cb62ef3917e5c4d703cda2e4 [2019-11-26 02:21:12,482 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:21:12,492 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:21:12,495 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:21:12,500 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:21:12,501 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:21:12,502 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_823e330d-7be9-497f-bd1f-eb460a82917c/bin/utaipan/../../sv-benchmarks/c/recursive-with-pointer/simple-recursive.c [2019-11-26 02:21:12,558 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_823e330d-7be9-497f-bd1f-eb460a82917c/bin/utaipan/data/7315fa81e/2f81cb524987473c9835b045617753a4/FLAGa0f99f384 [2019-11-26 02:21:12,941 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:21:12,941 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_823e330d-7be9-497f-bd1f-eb460a82917c/sv-benchmarks/c/recursive-with-pointer/simple-recursive.c [2019-11-26 02:21:12,947 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_823e330d-7be9-497f-bd1f-eb460a82917c/bin/utaipan/data/7315fa81e/2f81cb524987473c9835b045617753a4/FLAGa0f99f384 [2019-11-26 02:21:13,365 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_823e330d-7be9-497f-bd1f-eb460a82917c/bin/utaipan/data/7315fa81e/2f81cb524987473c9835b045617753a4 [2019-11-26 02:21:13,367 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:21:13,368 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:21:13,369 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:21:13,370 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:21:13,373 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:21:13,373 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:21:13" (1/1) ... [2019-11-26 02:21:13,376 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61c9ab44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:21:13, skipping insertion in model container [2019-11-26 02:21:13,376 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:21:13" (1/1) ... [2019-11-26 02:21:13,383 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:21:13,404 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:21:13,589 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:21:13,604 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:21:13,620 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:21:13,635 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:21:13,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:21:13 WrapperNode [2019-11-26 02:21:13,636 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:21:13,636 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:21:13,637 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:21:13,637 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:21:13,644 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:21:13" (1/1) ... [2019-11-26 02:21:13,715 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:21:13" (1/1) ... [2019-11-26 02:21:13,733 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:21:13,733 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:21:13,733 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:21:13,733 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:21:13,742 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:21:13" (1/1) ... [2019-11-26 02:21:13,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:21:13" (1/1) ... [2019-11-26 02:21:13,748 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:21:13" (1/1) ... [2019-11-26 02:21:13,749 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:21:13" (1/1) ... [2019-11-26 02:21:13,754 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:21:13" (1/1) ... [2019-11-26 02:21:13,755 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:21:13" (1/1) ... [2019-11-26 02:21:13,760 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:21:13" (1/1) ... [2019-11-26 02:21:13,762 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:21:13,762 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:21:13,762 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:21:13,762 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:21:13,763 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:21:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_823e330d-7be9-497f-bd1f-eb460a82917c/bin/utaipan/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 [2019-11-26 02:21:13,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-26 02:21:13,818 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2019-11-26 02:21:13,818 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2019-11-26 02:21:13,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:21:13,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:21:13,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2019-11-26 02:21:13,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:21:13,819 INFO L130 BoogieDeclarations]: Found specification of procedure plus [2019-11-26 02:21:13,819 INFO L138 BoogieDeclarations]: Found implementation of procedure plus [2019-11-26 02:21:13,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:21:13,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-26 02:21:14,091 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:21:14,091 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-26 02:21:14,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:21:14 BoogieIcfgContainer [2019-11-26 02:21:14,093 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:21:14,093 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:21:14,093 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:21:14,096 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:21:14,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:21:13" (1/3) ... [2019-11-26 02:21:14,097 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13adcecf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:21:14, skipping insertion in model container [2019-11-26 02:21:14,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:21:13" (2/3) ... [2019-11-26 02:21:14,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13adcecf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:21:14, skipping insertion in model container [2019-11-26 02:21:14,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:21:14" (3/3) ... [2019-11-26 02:21:14,099 INFO L109 eAbstractionObserver]: Analyzing ICFG simple-recursive.c [2019-11-26 02:21:14,108 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:21:14,113 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:21:14,123 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:21:14,145 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:21:14,145 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:21:14,145 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:21:14,146 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:21:14,146 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:21:14,146 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:21:14,146 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:21:14,146 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:21:14,164 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-11-26 02:21:14,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-26 02:21:14,170 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:21:14,171 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:21:14,172 INFO L410 AbstractCegarLoop]: === Iteration 1 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:21:14,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:21:14,176 INFO L82 PathProgramCache]: Analyzing trace with hash -694887038, now seen corresponding path program 1 times [2019-11-26 02:21:14,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:21:14,187 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [470229169] [2019-11-26 02:21:14,187 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_823e330d-7be9-497f-bd1f-eb460a82917c/bin/utaipan/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 [2019-11-26 02:21:14,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:21:14,285 INFO L255 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-26 02:21:14,288 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:21:14,333 INFO L377 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 11 treesize of output 7 [2019-11-26 02:21:14,333 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:21:14,351 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:21:14,351 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:21:14,351 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2019-11-26 02:21:14,413 INFO L377 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 15 treesize of output 7 [2019-11-26 02:21:14,413 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:21:14,418 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:21:14,418 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:21:14,418 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:5 [2019-11-26 02:21:14,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:21:14,430 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:21:14,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:21:14,488 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [470229169] [2019-11-26 02:21:14,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:21:14,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-11-26 02:21:14,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328821933] [2019-11-26 02:21:14,492 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-26 02:21:14,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:21:14,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-26 02:21:14,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-26 02:21:14,507 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 8 states. [2019-11-26 02:21:14,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:21:14,651 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2019-11-26 02:21:14,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-26 02:21:14,654 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2019-11-26 02:21:14,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:21:14,662 INFO L225 Difference]: With dead ends: 33 [2019-11-26 02:21:14,662 INFO L226 Difference]: Without dead ends: 14 [2019-11-26 02:21:14,665 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-11-26 02:21:14,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-26 02:21:14,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2019-11-26 02:21:14,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-26 02:21:14,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-11-26 02:21:14,692 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 7 [2019-11-26 02:21:14,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:21:14,692 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-11-26 02:21:14,692 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-26 02:21:14,692 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-11-26 02:21:14,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-26 02:21:14,693 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:21:14,693 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:21:14,897 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:21:14,897 INFO L410 AbstractCegarLoop]: === Iteration 2 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:21:14,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:21:14,899 INFO L82 PathProgramCache]: Analyzing trace with hash -2070363059, now seen corresponding path program 1 times [2019-11-26 02:21:14,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:21:14,900 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1843485379] [2019-11-26 02:21:14,901 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_823e330d-7be9-497f-bd1f-eb460a82917c/bin/utaipan/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 [2019-11-26 02:21:15,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:21:15,016 WARN L253 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 25 conjunts are in the unsatisfiable core [2019-11-26 02:21:15,018 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:21:15,028 INFO L377 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 11 treesize of output 7 [2019-11-26 02:21:15,028 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:21:15,035 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:21:15,035 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:21:15,035 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2019-11-26 02:21:15,106 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 27 treesize of output 15 [2019-11-26 02:21:15,108 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:21:15,118 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:21:15,118 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:21:15,119 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:30, output treesize:13 [2019-11-26 02:21:15,177 INFO L377 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 15 treesize of output 7 [2019-11-26 02:21:15,177 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:21:15,180 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:21:15,180 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:21:15,181 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:5 [2019-11-26 02:21:15,210 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:21:15,210 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:21:15,582 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:21:15,583 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1843485379] [2019-11-26 02:21:15,583 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249474163] [2019-11-26 02:21:15,583 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_823e330d-7be9-497f-bd1f-eb460a82917c/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:21:15,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:21:15,628 INFO L255 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 22 conjunts are in the unsatisfiable core [2019-11-26 02:21:15,630 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:21:15,639 INFO L377 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 11 treesize of output 7 [2019-11-26 02:21:15,639 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:21:15,643 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:21:15,644 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:21:15,644 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2019-11-26 02:21:15,824 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 27 treesize of output 15 [2019-11-26 02:21:15,825 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:21:15,830 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:21:15,831 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:21:15,831 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:27, output treesize:9 [2019-11-26 02:21:15,919 INFO L377 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 17 treesize of output 9 [2019-11-26 02:21:15,920 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:21:15,924 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:21:15,924 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:21:15,925 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:17, output treesize:5 [2019-11-26 02:21:15,926 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:21:15,927 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:21:15,946 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:21:15,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-11-26 02:21:15,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9] total 22 [2019-11-26 02:21:15,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134396855] [2019-11-26 02:21:15,951 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-11-26 02:21:15,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:21:15,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-11-26 02:21:15,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2019-11-26 02:21:15,954 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 22 states. [2019-11-26 02:21:16,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:21:16,453 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2019-11-26 02:21:16,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-26 02:21:16,455 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 12 [2019-11-26 02:21:16,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:21:16,456 INFO L225 Difference]: With dead ends: 27 [2019-11-26 02:21:16,456 INFO L226 Difference]: Without dead ends: 24 [2019-11-26 02:21:16,457 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=113, Invalid=643, Unknown=0, NotChecked=0, Total=756 [2019-11-26 02:21:16,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-26 02:21:16,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2019-11-26 02:21:16,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-26 02:21:16,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2019-11-26 02:21:16,463 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 12 [2019-11-26 02:21:16,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:21:16,463 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2019-11-26 02:21:16,463 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-11-26 02:21:16,463 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2019-11-26 02:21:16,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-26 02:21:16,464 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:21:16,464 INFO L410 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2019-11-26 02:21:16,873 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:21:16,873 INFO L410 AbstractCegarLoop]: === Iteration 3 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:21:16,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:21:16,874 INFO L82 PathProgramCache]: Analyzing trace with hash -978155155, now seen corresponding path program 2 times [2019-11-26 02:21:16,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:21:16,874 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1673346287] [2019-11-26 02:21:16,875 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_823e330d-7be9-497f-bd1f-eb460a82917c/bin/utaipan/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 [2019-11-26 02:21:17,001 ERROR L271 FreeRefinementEngine]: Caught known exception: Array theory solver does not yet support write-chains connecting two different constant arrays [2019-11-26 02:21:17,002 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [939409344] [2019-11-26 02:21:17,002 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_823e330d-7be9-497f-bd1f-eb460a82917c/bin/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:21:17,086 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-26 02:21:17,086 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-26 02:21:17,103 WARN L253 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 48 conjunts are in the unsatisfiable core [2019-11-26 02:21:17,105 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:21:17,153 INFO L377 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 11 treesize of output 7 [2019-11-26 02:21:17,153 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:21:17,184 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:21:17,184 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:21:17,184 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2019-11-26 02:21:17,238 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 27 treesize of output 15 [2019-11-26 02:21:17,239 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:21:17,242 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:21:17,242 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:21:17,242 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:27, output treesize:9 [2019-11-26 02:21:17,329 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 27 treesize of output 15 [2019-11-26 02:21:17,330 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:21:17,333 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:21:17,333 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:21:17,333 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:27, output treesize:9 [2019-11-26 02:21:17,455 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 25 treesize of output 13 [2019-11-26 02:21:17,456 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:21:17,458 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:21:17,458 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:21:17,459 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:9 [2019-11-26 02:21:17,536 INFO L377 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 17 treesize of output 9 [2019-11-26 02:21:17,537 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:21:17,539 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:21:17,539 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:21:17,539 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:17, output treesize:5 [2019-11-26 02:21:17,572 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:21:17,572 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:21:18,635 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:21:18,635 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1673346287] [2019-11-26 02:21:18,635 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-26 02:21:18,636 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939409344] [2019-11-26 02:21:18,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-26 02:21:18,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2019-11-26 02:21:18,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132530520] [2019-11-26 02:21:18,637 INFO L442 AbstractCegarLoop]: Interpolant automaton has 32 states [2019-11-26 02:21:18,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:21:18,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2019-11-26 02:21:18,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=886, Unknown=0, NotChecked=0, Total=992 [2019-11-26 02:21:18,638 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 32 states. [2019-11-26 02:21:21,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:21:21,311 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2019-11-26 02:21:21,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2019-11-26 02:21:21,313 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 22 [2019-11-26 02:21:21,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:21:21,314 INFO L225 Difference]: With dead ends: 47 [2019-11-26 02:21:21,314 INFO L226 Difference]: Without dead ends: 44 [2019-11-26 02:21:21,315 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=377, Invalid=2485, Unknown=0, NotChecked=0, Total=2862 [2019-11-26 02:21:21,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-11-26 02:21:21,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2019-11-26 02:21:21,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-11-26 02:21:21,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2019-11-26 02:21:21,324 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 22 [2019-11-26 02:21:21,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:21:21,324 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2019-11-26 02:21:21,324 INFO L463 AbstractCegarLoop]: Interpolant automaton has 32 states. [2019-11-26 02:21:21,325 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2019-11-26 02:21:21,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-11-26 02:21:21,326 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:21:21,326 INFO L410 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1] [2019-11-26 02:21:21,528 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:21:21,529 INFO L410 AbstractCegarLoop]: === Iteration 4 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:21:21,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:21:21,529 INFO L82 PathProgramCache]: Analyzing trace with hash -665560147, now seen corresponding path program 3 times [2019-11-26 02:21:21,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:21:21,530 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [13323363] [2019-11-26 02:21:21,530 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_823e330d-7be9-497f-bd1f-eb460a82917c/bin/utaipan/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:21:21,628 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-26 02:21:21,628 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-26 02:21:21,629 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-26 02:21:21,632 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:21:21,673 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 25 treesize of output 13 [2019-11-26 02:21:21,674 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:21:21,678 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:21:21,679 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:21:21,679 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:9 [2019-11-26 02:21:21,770 INFO L377 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 25 treesize of output 13 [2019-11-26 02:21:21,770 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:21:21,781 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:21:21,781 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:21:21,781 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:10 [2019-11-26 02:21:21,822 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-11-26 02:21:21,823 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:21:22,167 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-11-26 02:21:22,167 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [13323363] [2019-11-26 02:21:22,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-26 02:21:22,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 15 [2019-11-26 02:21:22,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038614910] [2019-11-26 02:21:22,168 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-26 02:21:22,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:21:22,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-26 02:21:22,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2019-11-26 02:21:22,169 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 9 states. [2019-11-26 02:21:22,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:21:22,397 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2019-11-26 02:21:22,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-26 02:21:22,398 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 42 [2019-11-26 02:21:22,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:21:22,398 INFO L225 Difference]: With dead ends: 43 [2019-11-26 02:21:22,398 INFO L226 Difference]: Without dead ends: 0 [2019-11-26 02:21:22,399 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2019-11-26 02:21:22,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-26 02:21:22,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-26 02:21:22,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-26 02:21:22,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-26 02:21:22,400 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 42 [2019-11-26 02:21:22,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:21:22,400 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-26 02:21:22,400 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-26 02:21:22,400 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-26 02:21:22,400 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-26 02:21:22,601 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:21:22,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-26 02:21:23,118 WARN L192 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 79 [2019-11-26 02:21:23,604 WARN L192 SmtUtils]: Spent 483.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 89 [2019-11-26 02:21:23,866 WARN L192 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2019-11-26 02:21:24,171 WARN L192 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 67 [2019-11-26 02:21:24,174 INFO L444 ceAbstractionStarter]: For program point fooEXIT(lines 9 18) no Hoare annotation was computed. [2019-11-26 02:21:24,174 INFO L440 ceAbstractionStarter]: At program point fooENTRY(lines 9 18) the Hoare annotation is: (let ((.cse5 (select |old(#memory_int)| |foo_#in~p.base|))) (let ((.cse1 (select .cse5 |foo_#in~p.offset|))) (let ((.cse0 (not (bvslt (bvadd .cse1 (_ bv4294967295 32)) (_ bv20 32)))) (.cse4 (select .cse5 (_ bv0 32))) (.cse3 (not (= |foo_#in~p.offset| (_ bv0 32)))) (.cse2 (select (select |#memory_int| |foo_#in~p.base|) |foo_#in~p.offset|))) (and (or .cse0 (not (bvslt (bvadd .cse1 (_ bv2 32)) (_ bv20 32))) (bvslt (bvadd .cse2 (_ bv2 32)) (_ bv20 32))) (or (bvslt (bvadd .cse2 (_ bv1 32)) (_ bv20 32)) (not (bvslt (bvadd .cse1 (_ bv1 32)) (_ bv20 32))) .cse0) (or .cse0 (not (bvslt .cse1 (_ bv20 32))) (bvslt .cse2 (_ bv20 32))) (or (= (bvadd .cse2 (_ bv4294967285 32)) (_ bv0 32)) .cse3 (not (= .cse4 (_ bv11 32)))) (or .cse0 (bvslt (bvadd .cse2 (_ bv4294967295 32)) (_ bv20 32))) (or (= (bvadd .cse2 (_ bv4294967284 32)) (_ bv0 32)) (not (= (bvadd .cse1 (_ bv4294967284 32)) (_ bv0 32)))) (or (= (bvadd .cse2 (_ bv4294967286 32)) (_ bv0 32)) (not (= .cse4 (_ bv10 32))) .cse3) (or (= (bvadd .cse2 (_ bv4294967283 32)) (_ bv0 32)) (not (= (bvadd .cse1 (_ bv4294967283 32)) (_ bv0 32)))))))) [2019-11-26 02:21:24,175 INFO L444 ceAbstractionStarter]: For program point L16(line 16) no Hoare annotation was computed. [2019-11-26 02:21:24,175 INFO L444 ceAbstractionStarter]: For program point fooErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2019-11-26 02:21:24,175 INFO L444 ceAbstractionStarter]: For program point L12(lines 12 17) no Hoare annotation was computed. [2019-11-26 02:21:24,175 INFO L440 ceAbstractionStarter]: At program point L11(line 11) the Hoare annotation is: (let ((.cse6 (select |old(#memory_int)| |foo_#in~p.base|))) (let ((.cse5 (select .cse6 |foo_#in~p.offset|))) (let ((.cse3 (select .cse6 (_ bv0 32))) (.cse2 (not (= |foo_#in~p.offset| (_ bv0 32)))) (.cse4 (not (bvslt (bvadd .cse5 (_ bv4294967295 32)) (_ bv20 32)))) (.cse0 (select (select |#memory_int| |foo_#in~p.base|) |foo_#in~p.offset|)) (.cse1 (select (select |#memory_int| foo_~p.base) foo_~p.offset))) (and (or (and (= (bvadd .cse0 (_ bv4294967285 32)) (_ bv0 32)) (= (bvadd .cse1 (_ bv4294967285 32)) (_ bv0 32))) .cse2 (not (= .cse3 (_ bv11 32)))) (or (and (= (bvadd .cse0 (_ bv4294967286 32)) (_ bv0 32)) (= (bvadd .cse1 (_ bv4294967286 32)) (_ bv0 32)) (= foo_~p.offset (_ bv0 32))) (not (= .cse3 (_ bv10 32))) .cse2) (or .cse4 (and (bvslt (bvadd .cse0 (_ bv4294967295 32)) (_ bv20 32)) (bvslt .cse1 (_ bv20 32)))) (or (and (= (bvadd .cse0 (_ bv4294967284 32)) (_ bv0 32)) (= (bvadd .cse1 (_ bv4294967284 32)) (_ bv0 32))) (not (= (bvadd .cse5 (_ bv4294967284 32)) (_ bv0 32)))) (or .cse4 (not (bvslt (bvadd .cse5 (_ bv2 32)) (_ bv20 32))) (and (bvslt (bvadd .cse1 (_ bv2 32)) (_ bv20 32)) (bvslt (bvadd .cse0 (_ bv2 32)) (_ bv20 32)))) (or (not (= (bvadd .cse5 (_ bv4294967283 32)) (_ bv0 32))) (and (= (bvadd .cse0 (_ bv4294967283 32)) (_ bv0 32)) (bvslt (bvadd .cse1 (_ bv3 32)) (_ bv20 32)))) (or (not (bvslt (bvadd .cse5 (_ bv1 32)) (_ bv20 32))) .cse4 (and (bvslt (bvadd .cse0 (_ bv1 32)) (_ bv20 32)) (bvslt (bvadd .cse1 (_ bv1 32)) (_ bv20 32)))))))) [2019-11-26 02:21:24,175 INFO L444 ceAbstractionStarter]: For program point L10(lines 10 17) no Hoare annotation was computed. [2019-11-26 02:21:24,175 INFO L444 ceAbstractionStarter]: For program point L10-1(lines 9 18) no Hoare annotation was computed. [2019-11-26 02:21:24,176 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-26 02:21:24,176 INFO L444 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-26 02:21:24,176 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-26 02:21:24,176 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-26 02:21:24,176 INFO L440 ceAbstractionStarter]: At program point L25(line 25) the Hoare annotation is: (and (= (_ bv10 32) (select (select |#memory_int| ULTIMATE.start_main_~p~0.base) ULTIMATE.start_main_~p~0.offset)) (= ULTIMATE.start_main_~p~0.offset (_ bv0 32))) [2019-11-26 02:21:24,176 INFO L444 ceAbstractionStarter]: For program point L25-1(line 25) no Hoare annotation was computed. [2019-11-26 02:21:24,176 INFO L444 ceAbstractionStarter]: For program point L20(lines 20 26) no Hoare annotation was computed. [2019-11-26 02:21:24,176 INFO L444 ceAbstractionStarter]: For program point plusFINAL(lines 4 7) no Hoare annotation was computed. [2019-11-26 02:21:24,176 INFO L440 ceAbstractionStarter]: At program point plusENTRY(lines 4 7) the Hoare annotation is: (let ((.cse2 (select (select |old(#memory_int)| |plus_#in~p.base|) |plus_#in~p.offset|))) (let ((.cse1 (not (bvslt .cse2 (_ bv20 32)))) (.cse0 (select (select |#memory_int| |plus_#in~p.base|) |plus_#in~p.offset|))) (and (or (bvslt (bvadd .cse0 (_ bv1 32)) (_ bv20 32)) .cse1 (not (bvslt (bvadd .cse2 (_ bv1 32)) (_ bv20 32)))) (or .cse1 (not (bvslt (bvadd .cse2 (_ bv3 32)) (_ bv20 32))) (bvslt (bvadd .cse0 (_ bv3 32)) (_ bv20 32))) (or (not (bvslt (bvadd .cse2 (_ bv2 32)) (_ bv20 32))) (bvslt (bvadd .cse0 (_ bv2 32)) (_ bv20 32)) .cse1) (or (not (= (bvadd .cse2 (_ bv4294967286 32)) (_ bv0 32))) (= (bvadd .cse0 (_ bv4294967286 32)) (_ bv0 32)) (not (= |plus_#in~p.offset| (_ bv0 32)))) (or (bvslt .cse0 (_ bv20 32)) .cse1) (or (= (_ bv0 32) (bvadd .cse0 (_ bv4294967285 32))) (not (= (_ bv0 32) (bvadd .cse2 (_ bv4294967285 32))))) (or (not (= .cse2 (_ bv12 32))) (= .cse0 (_ bv12 32)))))) [2019-11-26 02:21:24,177 INFO L444 ceAbstractionStarter]: For program point plusEXIT(lines 4 7) no Hoare annotation was computed. [2019-11-26 02:21:24,177 INFO L440 ceAbstractionStarter]: At program point L6(line 6) the Hoare annotation is: (let ((.cse2 (select (select |old(#memory_int)| |plus_#in~p.base|) |plus_#in~p.offset|))) (let ((.cse3 (not (bvslt .cse2 (_ bv20 32)))) (.cse0 (select (select |#memory_int| |plus_#in~p.base|) |plus_#in~p.offset|)) (.cse1 (select (select |#memory_int| plus_~p.base) plus_~p.offset))) (and (or (and (= .cse0 (_ bv12 32)) (= (bvadd .cse1 (_ bv4294967284 32)) (_ bv0 32))) (not (= (_ bv0 32) (bvadd .cse2 (_ bv4294967285 32))))) (or (bvslt .cse1 (_ bv20 32)) .cse3 (not (bvslt (bvadd .cse2 (_ bv1 32)) (_ bv20 32)))) (or (not (= .cse2 (_ bv12 32))) (and (= .cse1 (_ bv13 32)) (bvslt (bvadd .cse0 (_ bv3 32)) (_ bv20 32)))) (or .cse3 (bvslt (bvadd .cse1 (_ bv4294967295 32)) (_ bv20 32))) (or (not (bvslt (bvadd .cse2 (_ bv2 32)) (_ bv20 32))) .cse3 (and (bvslt (bvadd .cse0 (_ bv1 32)) (_ bv20 32)) (bvslt (bvadd .cse1 (_ bv1 32)) (_ bv20 32)))) (or (not (= (bvadd .cse2 (_ bv4294967286 32)) (_ bv0 32))) (not (= |plus_#in~p.offset| (_ bv0 32))) (and (= (_ bv0 32) (bvadd .cse0 (_ bv4294967285 32))) (= plus_~p.offset (_ bv0 32)) (= (bvadd .cse1 (_ bv4294967285 32)) (_ bv0 32)))) (or .cse3 (and (bvslt (bvadd .cse0 (_ bv2 32)) (_ bv20 32)) (bvslt (bvadd .cse1 (_ bv2 32)) (_ bv20 32))) (not (bvslt (bvadd .cse2 (_ bv3 32)) (_ bv20 32))))))) [2019-11-26 02:21:24,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:21:24 BoogieIcfgContainer [2019-11-26 02:21:24,179 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:21:24,179 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:21:24,179 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:21:24,179 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:21:24,180 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:21:14" (3/4) ... [2019-11-26 02:21:24,182 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-26 02:21:24,187 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure foo [2019-11-26 02:21:24,187 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure plus [2019-11-26 02:21:24,190 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2019-11-26 02:21:24,191 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-11-26 02:21:24,191 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-26 02:21:24,191 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-26 02:21:24,244 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_823e330d-7be9-497f-bd1f-eb460a82917c/bin/utaipan/witness.graphml [2019-11-26 02:21:24,244 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:21:24,245 INFO L168 Benchmark]: Toolchain (without parser) took 10876.92 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 222.3 MB). Free memory was 960.4 MB in the beginning and 898.8 MB in the end (delta: 61.6 MB). Peak memory consumption was 283.9 MB. Max. memory is 11.5 GB. [2019-11-26 02:21:24,246 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:21:24,246 INFO L168 Benchmark]: CACSL2BoogieTranslator took 266.74 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:21:24,247 INFO L168 Benchmark]: Boogie Procedure Inliner took 96.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 162.0 MB). Free memory was 949.7 MB in the beginning and 1.2 GB in the end (delta: -208.8 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. [2019-11-26 02:21:24,247 INFO L168 Benchmark]: Boogie Preprocessor took 28.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-26 02:21:24,247 INFO L168 Benchmark]: RCFGBuilder took 330.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:21:24,248 INFO L168 Benchmark]: TraceAbstraction took 10085.66 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 60.3 MB). Free memory was 1.1 GB in the beginning and 898.8 MB in the end (delta: 234.6 MB). Peak memory consumption was 294.9 MB. Max. memory is 11.5 GB. [2019-11-26 02:21:24,248 INFO L168 Benchmark]: Witness Printer took 64.86 ms. Allocated memory is still 1.3 GB. Free memory is still 898.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:21:24,250 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 266.74 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.7 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 96.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 162.0 MB). Free memory was 949.7 MB in the beginning and 1.2 GB in the end (delta: -208.8 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 28.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 330.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 10085.66 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 60.3 MB). Free memory was 1.1 GB in the beginning and 898.8 MB in the end (delta: 234.6 MB). Peak memory consumption was 294.9 MB. Max. memory is 11.5 GB. * Witness Printer took 64.86 ms. Allocated memory is still 1.3 GB. Free memory is still 898.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 19 locations, 1 error locations. Result: SAFE, OverallTime: 10.0s, OverallIterations: 4, TraceHistogramMax: 8, AutomataDifference: 3.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.5s, HoareTripleCheckerStatistics: 48 SDtfs, 27 SDslu, 214 SDs, 0 SdLazy, 565 SolverSat, 48 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 212 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 493 ImplicationChecksByTransitivity, 5.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 31 PreInvPairs, 31 NumberOfFragments, 811 HoareAnnotationTreeSize, 31 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 716 FormulaSimplificationTreeSizeReductionInter, 1.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 95 NumberOfCodeBlocks, 70 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 180 ConstructedInterpolants, 0 QuantifiedInterpolants, 20541 SizeOfPredicates, 69 NumberOfNonLiveVariables, 270 ConjunctsInSsa, 126 ConjunctsInUnsatCore, 10 InterpolantComputations, 3 PerfectInterpolantSequences, 237/288 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...