./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-examples/standard_reverse_ground.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_324a68ff-962f-44df-b630-de525fbd53b0/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_324a68ff-962f-44df-b630-de525fbd53b0/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_324a68ff-962f-44df-b630-de525fbd53b0/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_324a68ff-962f-44df-b630-de525fbd53b0/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-examples/standard_reverse_ground.i -s /tmp/vcloud-vcloud-master/worker/working_dir_324a68ff-962f-44df-b630-de525fbd53b0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_324a68ff-962f-44df-b630-de525fbd53b0/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 6c826362a5918246036ef78d4af04f2cfb17ad97 ............................................................................................................................................................................................................................................................................................................................ 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/working_dir_324a68ff-962f-44df-b630-de525fbd53b0/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_324a68ff-962f-44df-b630-de525fbd53b0/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_324a68ff-962f-44df-b630-de525fbd53b0/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_324a68ff-962f-44df-b630-de525fbd53b0/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-examples/standard_reverse_ground.i -s /tmp/vcloud-vcloud-master/worker/working_dir_324a68ff-962f-44df-b630-de525fbd53b0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_324a68ff-962f-44df-b630-de525fbd53b0/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 6c826362a5918246036ef78d4af04f2cfb17ad97 ............................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: incompatible size --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 11:25:27,244 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:25:27,245 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:25:27,254 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:25:27,254 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:25:27,255 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:25:27,256 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:25:27,257 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:25:27,258 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:25:27,259 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:25:27,260 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:25:27,261 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:25:27,261 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:25:27,262 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:25:27,262 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:25:27,263 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:25:27,264 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:25:27,265 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:25:27,266 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:25:27,268 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:25:27,269 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:25:27,270 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:25:27,271 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:25:27,272 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:25:27,274 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:25:27,274 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:25:27,274 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:25:27,275 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:25:27,275 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:25:27,276 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:25:27,277 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:25:27,280 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:25:27,281 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:25:27,281 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:25:27,282 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:25:27,282 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:25:27,283 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:25:27,283 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:25:27,283 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:25:27,284 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:25:27,285 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:25:27,285 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_324a68ff-962f-44df-b630-de525fbd53b0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-10-22 11:25:27,301 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:25:27,301 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:25:27,302 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:25:27,302 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:25:27,305 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:25:27,305 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:25:27,305 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:25:27,306 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:25:27,306 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:25:27,306 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:25:27,306 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:25:27,306 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:25:27,307 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:25:27,307 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:25:27,307 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:25:27,307 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:25:27,307 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:25:27,308 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:25:27,308 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:25:27,308 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:25:27,308 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:25:27,308 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:25:27,308 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:25:27,308 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:25:27,310 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:25:27,310 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:25:27,310 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:25:27,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:25:27,310 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:25:27,311 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:25:27,311 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:25:27,311 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:25:27,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:25:27,311 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:25:27,311 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:25:27,311 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/working_dir_324a68ff-962f-44df-b630-de525fbd53b0/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 -> 6c826362a5918246036ef78d4af04f2cfb17ad97 [2019-10-22 11:25:27,344 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:25:27,355 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:25:27,358 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:25:27,359 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:25:27,360 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:25:27,360 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_324a68ff-962f-44df-b630-de525fbd53b0/bin/utaipan/../../sv-benchmarks/c/array-examples/standard_reverse_ground.i [2019-10-22 11:25:27,404 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_324a68ff-962f-44df-b630-de525fbd53b0/bin/utaipan/data/cdafe85ee/2f5346975e2f43f7bc3c51466109526a/FLAG8e7907e56 [2019-10-22 11:25:27,794 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:25:27,795 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_324a68ff-962f-44df-b630-de525fbd53b0/sv-benchmarks/c/array-examples/standard_reverse_ground.i [2019-10-22 11:25:27,800 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_324a68ff-962f-44df-b630-de525fbd53b0/bin/utaipan/data/cdafe85ee/2f5346975e2f43f7bc3c51466109526a/FLAG8e7907e56 [2019-10-22 11:25:28,186 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_324a68ff-962f-44df-b630-de525fbd53b0/bin/utaipan/data/cdafe85ee/2f5346975e2f43f7bc3c51466109526a [2019-10-22 11:25:28,188 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:25:28,189 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:25:28,190 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:25:28,190 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:25:28,193 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:25:28,194 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:25:28" (1/1) ... [2019-10-22 11:25:28,196 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1288fdd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:28, skipping insertion in model container [2019-10-22 11:25:28,196 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:25:28" (1/1) ... [2019-10-22 11:25:28,203 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:25:28,216 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:25:28,396 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:25:28,400 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:25:28,475 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:25:28,493 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:25:28,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:28 WrapperNode [2019-10-22 11:25:28,494 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:25:28,495 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:25:28,495 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:25:28,495 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:25:28,503 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:28" (1/1) ... [2019-10-22 11:25:28,510 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:28" (1/1) ... [2019-10-22 11:25:28,528 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:25:28,528 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:25:28,529 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:25:28,529 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:25:28,537 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:28" (1/1) ... [2019-10-22 11:25:28,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:28" (1/1) ... [2019-10-22 11:25:28,539 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:28" (1/1) ... [2019-10-22 11:25:28,539 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:28" (1/1) ... [2019-10-22 11:25:28,547 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:28" (1/1) ... [2019-10-22 11:25:28,552 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:28" (1/1) ... [2019-10-22 11:25:28,553 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:28" (1/1) ... [2019-10-22 11:25:28,560 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:25:28,560 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:25:28,560 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:25:28,560 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:25:28,561 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:28" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_324a68ff-962f-44df-b630-de525fbd53b0/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 [2019-10-22 11:25:28,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 11:25:28,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:25:28,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:25:28,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 11:25:28,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:25:28,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 11:25:28,855 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:25:28,855 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-10-22 11:25:28,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:28 BoogieIcfgContainer [2019-10-22 11:25:28,856 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:25:28,857 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:25:28,857 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:25:28,868 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:25:28,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:25:28" (1/3) ... [2019-10-22 11:25:28,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@351a1018 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:25:28, skipping insertion in model container [2019-10-22 11:25:28,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:28" (2/3) ... [2019-10-22 11:25:28,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@351a1018 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:25:28, skipping insertion in model container [2019-10-22 11:25:28,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:28" (3/3) ... [2019-10-22 11:25:28,871 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_reverse_ground.i [2019-10-22 11:25:28,882 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:25:28,888 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 11:25:28,898 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 11:25:28,919 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:25:28,919 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:25:28,920 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:25:28,920 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:25:28,922 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:25:28,922 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:25:28,922 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:25:28,923 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:25:28,934 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-10-22 11:25:28,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-10-22 11:25:28,939 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:28,943 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:25:28,945 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:28,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:28,950 INFO L82 PathProgramCache]: Analyzing trace with hash -2016449835, now seen corresponding path program 1 times [2019-10-22 11:25:28,956 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:28,956 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573447600] [2019-10-22 11:25:28,956 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:28,956 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:28,957 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:29,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:29,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:29,067 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573447600] [2019-10-22 11:25:29,067 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:29,068 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:25:29,068 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967831828] [2019-10-22 11:25:29,072 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:25:29,073 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:25:29,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:25:29,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:25:29,086 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 3 states. [2019-10-22 11:25:29,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:29,127 INFO L93 Difference]: Finished difference Result 36 states and 50 transitions. [2019-10-22 11:25:29,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:25:29,129 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-10-22 11:25:29,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:29,137 INFO L225 Difference]: With dead ends: 36 [2019-10-22 11:25:29,137 INFO L226 Difference]: Without dead ends: 18 [2019-10-22 11:25:29,140 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:25:29,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-10-22 11:25:29,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2019-10-22 11:25:29,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-10-22 11:25:29,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2019-10-22 11:25:29,166 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 9 [2019-10-22 11:25:29,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:29,167 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2019-10-22 11:25:29,167 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:25:29,167 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2019-10-22 11:25:29,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-22 11:25:29,168 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:29,168 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:25:29,168 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:29,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:29,168 INFO L82 PathProgramCache]: Analyzing trace with hash 2031054225, now seen corresponding path program 1 times [2019-10-22 11:25:29,168 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:29,169 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148661264] [2019-10-22 11:25:29,169 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:29,169 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:29,169 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:29,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:29,215 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 11:25:29,215 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148661264] [2019-10-22 11:25:29,215 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610562206] [2019-10-22 11:25:29,215 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_324a68ff-962f-44df-b630-de525fbd53b0/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 [2019-10-22 11:25:29,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:29,261 INFO L256 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-22 11:25:29,266 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:25:29,291 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 11:25:29,291 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:25:29,323 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 11:25:29,324 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1244166958] [2019-10-22 11:25:29,329 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 14 [2019-10-22 11:25:29,359 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-10-22 11:25:29,360 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-22 11:25:29,640 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:25:29,641 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: inappropriate decl info IMPLEMENTATION at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Boogie2SmtSymbolTable.getBoogieVar(Boogie2SmtSymbolTable.java:222) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.getBoogieVar(NonrelationalStatementProcessor.java:348) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.handleHavocStatement(NonrelationalStatementProcessor.java:325) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.processStatement(NonrelationalStatementProcessor.java:159) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.process(NonrelationalStatementProcessor.java:138) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.process(NonrelationalStatementProcessor.java:107) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.handleInternalTransition(NonrelationalPostOperator.java:422) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.handleInternalTransition(NonrelationalPostOperator.java:413) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.apply(NonrelationalPostOperator.java:140) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.apply(NonrelationalPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.applyInternally(CompoundDomainPostOperator.java:306) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.apply(CompoundDomainPostOperator.java:131) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.apply(CompoundDomainPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormanCachedPostOperation.restoreOriginalStateVariables(PoormanCachedPostOperation.java:322) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.applyPost(PoormansAbstractPostOperator.java:217) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.apply(PoormansAbstractPostOperator.java:120) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.apply(PoormansAbstractPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.absint.DisjunctiveAbstractState.lambda$17(DisjunctiveAbstractState.java:323) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.absint.DisjunctiveAbstractState.mapCollection(DisjunctiveAbstractState.java:519) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.absint.DisjunctiveAbstractState.apply(DisjunctiveAbstractState.java:323) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.calculateAbstractPost(FixpointEngine.java:249) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.calculateFixpoint(FixpointEngine.java:134) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.run(FixpointEngine.java:105) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.tool.AbstractInterpreter.runWithoutTimeoutAndResults(AbstractInterpreter.java:149) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarAbsIntRunner.generateFixpoints(CegarAbsIntRunner.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarAbsIntRunner.(CegarAbsIntRunner.java:158) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleAbstractInterpretation.getOrConstructRunner(IpTcStrategyModuleAbstractInterpretation.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleAbstractInterpretation.construct(IpTcStrategyModuleAbstractInterpretation.java:81) 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.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:299) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-10-22 11:25:29,645 INFO L168 Benchmark]: Toolchain (without parser) took 1455.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.3 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -136.8 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:29,646 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:25:29,647 INFO L168 Benchmark]: CACSL2BoogieTranslator took 304.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.3 MB). Free memory was 944.5 MB in the beginning and 1.2 GB in the end (delta: -207.8 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:29,647 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.57 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:25:29,648 INFO L168 Benchmark]: Boogie Preprocessor took 31.30 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: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:29,648 INFO L168 Benchmark]: RCFGBuilder took 296.46 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: 22.6 MB). Peak memory consumption was 22.6 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:29,652 INFO L168 Benchmark]: TraceAbstraction took 786.42 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: 45.2 MB). Peak memory consumption was 45.2 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:29,655 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 304.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.3 MB). Free memory was 944.5 MB in the beginning and 1.2 GB in the end (delta: -207.8 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 33.57 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 31.30 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: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 296.46 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: 22.6 MB). Peak memory consumption was 22.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 786.42 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: 45.2 MB). Peak memory consumption was 45.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: inappropriate decl info IMPLEMENTATION de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: inappropriate decl info IMPLEMENTATION: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Boogie2SmtSymbolTable.getBoogieVar(Boogie2SmtSymbolTable.java:222) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-cad4683 [2019-10-22 11:25:31,593 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:25:31,594 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:25:31,604 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:25:31,604 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:25:31,605 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:25:31,606 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:25:31,607 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:25:31,608 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:25:31,609 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:25:31,610 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:25:31,611 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:25:31,611 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:25:31,612 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:25:31,613 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:25:31,613 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:25:31,614 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:25:31,615 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:25:31,616 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:25:31,617 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:25:31,619 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:25:31,620 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:25:31,620 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:25:31,621 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:25:31,623 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:25:31,623 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:25:31,623 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:25:31,624 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:25:31,624 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:25:31,625 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:25:31,625 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:25:31,626 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:25:31,626 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:25:31,627 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:25:31,628 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:25:31,628 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:25:31,629 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:25:31,629 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:25:31,629 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:25:31,630 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:25:31,630 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:25:31,634 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_324a68ff-962f-44df-b630-de525fbd53b0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-10-22 11:25:31,650 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:25:31,650 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:25:31,651 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:25:31,651 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:25:31,651 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:25:31,652 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:25:31,652 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:25:31,652 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:25:31,652 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:25:31,652 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:25:31,653 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:25:31,653 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:25:31,653 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:25:31,653 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:25:31,653 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:25:31,653 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:25:31,654 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-10-22 11:25:31,654 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-10-22 11:25:31,654 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:25:31,654 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:25:31,654 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 11:25:31,654 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:25:31,655 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:25:31,656 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:25:31,656 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:25:31,656 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:25:31,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:25:31,657 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:25:31,657 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:25:31,658 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:25:31,658 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-10-22 11:25:31,658 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-10-22 11:25:31,658 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:25:31,658 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:25:31,658 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/working_dir_324a68ff-962f-44df-b630-de525fbd53b0/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 -> 6c826362a5918246036ef78d4af04f2cfb17ad97 [2019-10-22 11:25:31,694 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:25:31,705 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:25:31,710 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:25:31,711 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:25:31,711 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:25:31,712 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_324a68ff-962f-44df-b630-de525fbd53b0/bin/utaipan/../../sv-benchmarks/c/array-examples/standard_reverse_ground.i [2019-10-22 11:25:31,760 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_324a68ff-962f-44df-b630-de525fbd53b0/bin/utaipan/data/371a07555/8cea0228080940b38806eed224fe6eae/FLAG123aa635a [2019-10-22 11:25:32,096 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:25:32,096 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_324a68ff-962f-44df-b630-de525fbd53b0/sv-benchmarks/c/array-examples/standard_reverse_ground.i [2019-10-22 11:25:32,102 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_324a68ff-962f-44df-b630-de525fbd53b0/bin/utaipan/data/371a07555/8cea0228080940b38806eed224fe6eae/FLAG123aa635a [2019-10-22 11:25:32,504 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_324a68ff-962f-44df-b630-de525fbd53b0/bin/utaipan/data/371a07555/8cea0228080940b38806eed224fe6eae [2019-10-22 11:25:32,507 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:25:32,509 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:25:32,510 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:25:32,510 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:25:32,513 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:25:32,514 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:25:32" (1/1) ... [2019-10-22 11:25:32,517 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1556689e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:32, skipping insertion in model container [2019-10-22 11:25:32,517 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:25:32" (1/1) ... [2019-10-22 11:25:32,523 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:25:32,536 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:25:32,722 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:25:32,727 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:25:32,753 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:25:32,777 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:25:32,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:32 WrapperNode [2019-10-22 11:25:32,778 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:25:32,779 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:25:32,779 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:25:32,779 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:25:32,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:32" (1/1) ... [2019-10-22 11:25:32,792 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:32" (1/1) ... [2019-10-22 11:25:32,860 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:25:32,861 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:25:32,861 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:25:32,862 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:25:32,870 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:32" (1/1) ... [2019-10-22 11:25:32,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:32" (1/1) ... [2019-10-22 11:25:32,872 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:32" (1/1) ... [2019-10-22 11:25:32,872 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:32" (1/1) ... [2019-10-22 11:25:32,879 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:32" (1/1) ... [2019-10-22 11:25:32,884 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:32" (1/1) ... [2019-10-22 11:25:32,885 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:32" (1/1) ... [2019-10-22 11:25:32,887 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:25:32,887 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:25:32,887 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:25:32,887 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:25:32,888 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_324a68ff-962f-44df-b630-de525fbd53b0/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 [2019-10-22 11:25:32,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-10-22 11:25:32,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:25:32,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:25:32,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:25:32,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 11:25:32,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-10-22 11:25:33,140 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:25:33,140 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-10-22 11:25:33,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:33 BoogieIcfgContainer [2019-10-22 11:25:33,142 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:25:33,149 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:25:33,149 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:25:33,151 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:25:33,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:25:32" (1/3) ... [2019-10-22 11:25:33,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42c6f522 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:25:33, skipping insertion in model container [2019-10-22 11:25:33,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:32" (2/3) ... [2019-10-22 11:25:33,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42c6f522 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:25:33, skipping insertion in model container [2019-10-22 11:25:33,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:33" (3/3) ... [2019-10-22 11:25:33,154 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_reverse_ground.i [2019-10-22 11:25:33,171 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:25:33,177 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 11:25:33,190 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 11:25:33,215 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:25:33,215 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:25:33,215 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:25:33,215 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:25:33,215 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:25:33,215 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:25:33,215 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:25:33,215 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:25:33,226 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-10-22 11:25:33,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-10-22 11:25:33,232 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:33,232 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:25:33,234 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:33,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:33,239 INFO L82 PathProgramCache]: Analyzing trace with hash -2016449835, now seen corresponding path program 1 times [2019-10-22 11:25:33,246 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:25:33,247 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1468374472] [2019-10-22 11:25:33,247 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_324a68ff-962f-44df-b630-de525fbd53b0/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 [2019-10-22 11:25:33,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:33,327 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 11:25:33,331 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:25:33,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:33,353 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:25:33,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:33,372 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1468374472] [2019-10-22 11:25:33,373 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:33,373 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-10-22 11:25:33,373 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238909764] [2019-10-22 11:25:33,377 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:25:33,378 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:25:33,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:25:33,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:25:33,391 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 4 states. [2019-10-22 11:25:33,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:33,461 INFO L93 Difference]: Finished difference Result 38 states and 56 transitions. [2019-10-22 11:25:33,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:25:33,462 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-10-22 11:25:33,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:33,470 INFO L225 Difference]: With dead ends: 38 [2019-10-22 11:25:33,470 INFO L226 Difference]: Without dead ends: 20 [2019-10-22 11:25:33,472 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:25:33,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-10-22 11:25:33,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-10-22 11:25:33,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-10-22 11:25:33,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2019-10-22 11:25:33,498 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 9 [2019-10-22 11:25:33,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:33,499 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2019-10-22 11:25:33,499 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:25:33,499 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2019-10-22 11:25:33,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-22 11:25:33,499 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:33,499 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:25:33,700 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:25:33,700 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:33,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:33,701 INFO L82 PathProgramCache]: Analyzing trace with hash -799235507, now seen corresponding path program 1 times [2019-10-22 11:25:33,701 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:25:33,701 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2033048118] [2019-10-22 11:25:33,701 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_324a68ff-962f-44df-b630-de525fbd53b0/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 [2019-10-22 11:25:33,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:33,783 INFO L256 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 11:25:33,784 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:25:33,815 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-22 11:25:33,815 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:25:33,877 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-22 11:25:33,878 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2033048118] [2019-10-22 11:25:33,878 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201833128] [2019-10-22 11:25:33,878 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_324a68ff-962f-44df-b630-de525fbd53b0/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 [2019-10-22 11:25:33,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:33,931 INFO L256 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 11:25:33,933 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:25:33,938 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-22 11:25:33,938 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:25:33,943 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-22 11:25:33,944 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-22 11:25:33,944 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5] total 8 [2019-10-22 11:25:33,944 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247720709] [2019-10-22 11:25:33,946 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 11:25:33,946 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:25:33,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 11:25:33,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-22 11:25:33,947 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 8 states. [2019-10-22 11:25:34,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:34,186 INFO L93 Difference]: Finished difference Result 49 states and 60 transitions. [2019-10-22 11:25:34,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 11:25:34,187 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2019-10-22 11:25:34,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:34,188 INFO L225 Difference]: With dead ends: 49 [2019-10-22 11:25:34,188 INFO L226 Difference]: Without dead ends: 36 [2019-10-22 11:25:34,189 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2019-10-22 11:25:34,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-10-22 11:25:34,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-10-22 11:25:34,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-10-22 11:25:34,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2019-10-22 11:25:34,196 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 17 [2019-10-22 11:25:34,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:34,197 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2019-10-22 11:25:34,197 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 11:25:34,197 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2019-10-22 11:25:34,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-10-22 11:25:34,198 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:34,198 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:25:34,600 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 [2019-10-22 11:25:34,600 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:34,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:34,600 INFO L82 PathProgramCache]: Analyzing trace with hash -189699779, now seen corresponding path program 2 times [2019-10-22 11:25:34,601 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:25:34,601 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [783008828] [2019-10-22 11:25:34,601 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_324a68ff-962f-44df-b630-de525fbd53b0/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 [2019-10-22 11:25:34,694 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-22 11:25:34,694 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 11:25:34,696 INFO L256 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-22 11:25:34,697 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:25:34,768 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-22 11:25:34,769 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:25:34,985 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-22 11:25:34,986 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [783008828] [2019-10-22 11:25:34,986 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892541464] [2019-10-22 11:25:34,993 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_324a68ff-962f-44df-b630-de525fbd53b0/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 [2019-10-22 11:25:35,067 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-22 11:25:35,067 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 11:25:35,072 INFO L256 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-22 11:25:35,074 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:25:35,101 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-22 11:25:35,103 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:25:35,115 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-22 11:25:35,115 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-22 11:25:35,116 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9] total 16 [2019-10-22 11:25:35,117 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241059353] [2019-10-22 11:25:35,118 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-22 11:25:35,119 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:25:35,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-22 11:25:35,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2019-10-22 11:25:35,121 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 16 states. [2019-10-22 11:25:35,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:35,943 INFO L93 Difference]: Finished difference Result 89 states and 108 transitions. [2019-10-22 11:25:35,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-22 11:25:35,944 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 33 [2019-10-22 11:25:35,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:35,945 INFO L225 Difference]: With dead ends: 89 [2019-10-22 11:25:35,945 INFO L226 Difference]: Without dead ends: 68 [2019-10-22 11:25:35,946 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 112 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=174, Invalid=288, Unknown=0, NotChecked=0, Total=462 [2019-10-22 11:25:35,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2019-10-22 11:25:35,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2019-10-22 11:25:35,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2019-10-22 11:25:35,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 70 transitions. [2019-10-22 11:25:35,954 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 70 transitions. Word has length 33 [2019-10-22 11:25:35,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:35,954 INFO L462 AbstractCegarLoop]: Abstraction has 68 states and 70 transitions. [2019-10-22 11:25:35,955 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-22 11:25:35,955 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 70 transitions. [2019-10-22 11:25:35,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-10-22 11:25:35,956 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:35,956 INFO L380 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:25:36,357 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:25:36,357 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:36,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:36,358 INFO L82 PathProgramCache]: Analyzing trace with hash -773564643, now seen corresponding path program 3 times [2019-10-22 11:25:36,358 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:25:36,359 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [180824336] [2019-10-22 11:25:36,359 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_324a68ff-962f-44df-b630-de525fbd53b0/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 [2019-10-22 11:25:36,454 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-10-22 11:25:36,454 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 11:25:36,456 INFO L256 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 12 conjunts are in the unsatisfiable core [2019-10-22 11:25:36,458 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:25:36,494 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 10 treesize of output 8 [2019-10-22 11:25:36,495 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 11:25:36,500 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 11:25:36,500 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-22 11:25:36,500 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2019-10-22 11:25:36,536 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2019-10-22 11:25:36,537 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 11:25:36,567 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 11:25:36,568 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-22 11:25:36,568 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:36, output treesize:32 [2019-10-22 11:25:36,807 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:25:40,919 INFO L172 IndexEqualityManager]: detected equality via solver [2019-10-22 11:25:40,926 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 11:25:40,927 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 39 [2019-10-22 11:25:40,927 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:25:40,928 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 11:25:40,945 INFO L567 ElimStorePlain]: treesize reduction 29, result has 9.4 percent of original size [2019-10-22 11:25:40,945 INFO L496 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-22 11:25:40,945 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:58, output treesize:3 [2019-10-22 11:25:40,979 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2019-10-22 11:25:40,979 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:25:59,796 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:25:59,797 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: incompatible size at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.analyzeCosts(ArrayIndexBasedCostEstimation.java:211) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.computeCostEstimation(ArrayIndexBasedCostEstimation.java:152) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.(ArrayIndexBasedCostEstimation.java:64) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.computeCostEstimation(ElimStorePlain.java:519) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:390) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:245) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:418) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:290) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:335) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.checkFeasibility(TraceAbstractionRefinementEngine.java:244) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:160) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-10-22 11:25:59,800 INFO L168 Benchmark]: Toolchain (without parser) took 27291.77 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.9 MB). Free memory was 951.0 MB in the beginning and 859.9 MB in the end (delta: 91.1 MB). Peak memory consumption was 241.1 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:59,801 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:25:59,801 INFO L168 Benchmark]: CACSL2BoogieTranslator took 268.56 ms. Allocated memory is still 1.0 GB. Free memory was 951.0 MB in the beginning and 940.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:59,802 INFO L168 Benchmark]: Boogie Procedure Inliner took 82.49 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.9 MB). Free memory was 940.3 MB in the beginning and 1.1 GB in the end (delta: -205.4 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:59,802 INFO L168 Benchmark]: Boogie Preprocessor took 25.57 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. [2019-10-22 11:25:59,805 INFO L168 Benchmark]: RCFGBuilder took 254.77 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: 24.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:59,806 INFO L168 Benchmark]: TraceAbstraction took 26650.49 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 859.9 MB in the end (delta: 254.7 MB). Peak memory consumption was 254.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:59,808 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 268.56 ms. Allocated memory is still 1.0 GB. Free memory was 951.0 MB in the beginning and 940.3 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 82.49 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.9 MB). Free memory was 940.3 MB in the beginning and 1.1 GB in the end (delta: -205.4 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 25.57 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 254.77 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: 24.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 26650.49 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 859.9 MB in the end (delta: 254.7 MB). Peak memory consumption was 254.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: incompatible size de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: incompatible size: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.analyzeCosts(ArrayIndexBasedCostEstimation.java:211) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...