./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/n.c40.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_7ac2c64d-9aa3-43dc-9d32-b705e5e2a19f/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_7ac2c64d-9aa3-43dc-9d32-b705e5e2a19f/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7ac2c64d-9aa3-43dc-9d32-b705e5e2a19f/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7ac2c64d-9aa3-43dc-9d32-b705e5e2a19f/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/n.c40.c -s /tmp/vcloud-vcloud-master/worker/run_dir_7ac2c64d-9aa3-43dc-9d32-b705e5e2a19f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7ac2c64d-9aa3-43dc-9d32-b705e5e2a19f/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e954357898f010ea28e7deb5d5a1ae907cf090e4 ......................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_7ac2c64d-9aa3-43dc-9d32-b705e5e2a19f/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_7ac2c64d-9aa3-43dc-9d32-b705e5e2a19f/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7ac2c64d-9aa3-43dc-9d32-b705e5e2a19f/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7ac2c64d-9aa3-43dc-9d32-b705e5e2a19f/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/n.c40.c -s /tmp/vcloud-vcloud-master/worker/run_dir_7ac2c64d-9aa3-43dc-9d32-b705e5e2a19f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7ac2c64d-9aa3-43dc-9d32-b705e5e2a19f/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e954357898f010ea28e7deb5d5a1ae907cf090e4 ....................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 12:00:20,437 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 12:00:20,439 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 12:00:20,446 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 12:00:20,446 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 12:00:20,447 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 12:00:20,448 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 12:00:20,449 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 12:00:20,451 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 12:00:20,451 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 12:00:20,452 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 12:00:20,453 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 12:00:20,453 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 12:00:20,454 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 12:00:20,454 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 12:00:20,455 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 12:00:20,456 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 12:00:20,457 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 12:00:20,458 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 12:00:20,459 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 12:00:20,460 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 12:00:20,461 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 12:00:20,462 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 12:00:20,462 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 12:00:20,464 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 12:00:20,464 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 12:00:20,465 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 12:00:20,465 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 12:00:20,465 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 12:00:20,466 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 12:00:20,466 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 12:00:20,467 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 12:00:20,467 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 12:00:20,467 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 12:00:20,468 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 12:00:20,468 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 12:00:20,468 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 12:00:20,469 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 12:00:20,469 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 12:00:20,469 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 12:00:20,470 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 12:00:20,470 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7ac2c64d-9aa3-43dc-9d32-b705e5e2a19f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 12:00:20,480 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 12:00:20,480 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 12:00:20,481 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 12:00:20,481 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 12:00:20,481 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 12:00:20,481 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 12:00:20,482 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 12:00:20,482 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 12:00:20,482 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 12:00:20,482 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 12:00:20,482 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 12:00:20,482 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 12:00:20,482 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 12:00:20,483 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 12:00:20,483 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 12:00:20,483 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 12:00:20,483 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 12:00:20,483 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 12:00:20,483 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 12:00:20,484 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 12:00:20,484 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 12:00:20,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 12:00:20,484 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 12:00:20,484 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 12:00:20,484 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 12:00:20,484 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 12:00:20,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 12:00:20,485 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 12:00:20,485 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 12:00:20,485 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_7ac2c64d-9aa3-43dc-9d32-b705e5e2a19f/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e954357898f010ea28e7deb5d5a1ae907cf090e4 [2019-12-07 12:00:20,587 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 12:00:20,596 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 12:00:20,598 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 12:00:20,599 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 12:00:20,599 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 12:00:20,600 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7ac2c64d-9aa3-43dc-9d32-b705e5e2a19f/bin/uautomizer/../../sv-benchmarks/c/loops/n.c40.c [2019-12-07 12:00:20,636 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7ac2c64d-9aa3-43dc-9d32-b705e5e2a19f/bin/uautomizer/data/dbc80f751/ef8ebcf46e5f4dc4805c56d934e03fec/FLAGb2b0eb7c1 [2019-12-07 12:00:21,035 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 12:00:21,036 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7ac2c64d-9aa3-43dc-9d32-b705e5e2a19f/sv-benchmarks/c/loops/n.c40.c [2019-12-07 12:00:21,039 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7ac2c64d-9aa3-43dc-9d32-b705e5e2a19f/bin/uautomizer/data/dbc80f751/ef8ebcf46e5f4dc4805c56d934e03fec/FLAGb2b0eb7c1 [2019-12-07 12:00:21,048 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7ac2c64d-9aa3-43dc-9d32-b705e5e2a19f/bin/uautomizer/data/dbc80f751/ef8ebcf46e5f4dc4805c56d934e03fec [2019-12-07 12:00:21,050 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 12:00:21,051 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 12:00:21,052 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 12:00:21,052 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 12:00:21,054 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 12:00:21,055 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:00:21" (1/1) ... [2019-12-07 12:00:21,057 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52bdc395 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:00:21, skipping insertion in model container [2019-12-07 12:00:21,057 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:00:21" (1/1) ... [2019-12-07 12:00:21,062 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 12:00:21,072 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 12:00:21,171 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 12:00:21,176 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 12:00:21,218 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 12:00:21,231 INFO L208 MainTranslator]: Completed translation [2019-12-07 12:00:21,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:00:21 WrapperNode [2019-12-07 12:00:21,232 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 12:00:21,232 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 12:00:21,232 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 12:00:21,232 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 12:00:21,238 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:00:21" (1/1) ... [2019-12-07 12:00:21,243 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:00:21" (1/1) ... [2019-12-07 12:00:21,254 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 12:00:21,255 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 12:00:21,255 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 12:00:21,255 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 12:00:21,260 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:00:21" (1/1) ... [2019-12-07 12:00:21,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:00:21" (1/1) ... [2019-12-07 12:00:21,261 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:00:21" (1/1) ... [2019-12-07 12:00:21,261 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:00:21" (1/1) ... [2019-12-07 12:00:21,265 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:00:21" (1/1) ... [2019-12-07 12:00:21,267 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:00:21" (1/1) ... [2019-12-07 12:00:21,268 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:00:21" (1/1) ... [2019-12-07 12:00:21,269 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 12:00:21,269 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 12:00:21,269 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 12:00:21,269 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 12:00:21,270 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:00:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7ac2c64d-9aa3-43dc-9d32-b705e5e2a19f/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 12:00:21,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 12:00:21,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 12:00:21,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 12:00:21,309 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 12:00:21,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 12:00:21,426 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 12:00:21,426 INFO L287 CfgBuilder]: Removed 5 assume(true) statements. [2019-12-07 12:00:21,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:00:21 BoogieIcfgContainer [2019-12-07 12:00:21,427 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 12:00:21,428 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 12:00:21,428 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 12:00:21,430 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 12:00:21,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 12:00:21" (1/3) ... [2019-12-07 12:00:21,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76ac481 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:00:21, skipping insertion in model container [2019-12-07 12:00:21,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:00:21" (2/3) ... [2019-12-07 12:00:21,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76ac481 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:00:21, skipping insertion in model container [2019-12-07 12:00:21,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:00:21" (3/3) ... [2019-12-07 12:00:21,432 INFO L109 eAbstractionObserver]: Analyzing ICFG n.c40.c [2019-12-07 12:00:21,438 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 12:00:21,441 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 12:00:21,448 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 12:00:21,462 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 12:00:21,462 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 12:00:21,462 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 12:00:21,462 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 12:00:21,463 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 12:00:21,463 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 12:00:21,463 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 12:00:21,463 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 12:00:21,471 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2019-12-07 12:00:21,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-07 12:00:21,475 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:00:21,476 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:00:21,476 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 12:00:21,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:00:21,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1813493552, now seen corresponding path program 1 times [2019-12-07 12:00:21,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:00:21,485 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131815782] [2019-12-07 12:00:21,485 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:00:21,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:00:21,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:00:21,570 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131815782] [2019-12-07 12:00:21,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 12:00:21,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 12:00:21,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253363441] [2019-12-07 12:00:21,574 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 12:00:21,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 12:00:21,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 12:00:21,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 12:00:21,584 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 2 states. [2019-12-07 12:00:21,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:00:21,593 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2019-12-07 12:00:21,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 12:00:21,594 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2019-12-07 12:00:21,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:00:21,600 INFO L225 Difference]: With dead ends: 22 [2019-12-07 12:00:21,600 INFO L226 Difference]: Without dead ends: 9 [2019-12-07 12:00:21,602 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 12:00:21,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-12-07 12:00:21,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-12-07 12:00:21,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-12-07 12:00:21,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2019-12-07 12:00:21,622 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2019-12-07 12:00:21,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:00:21,622 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2019-12-07 12:00:21,622 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 12:00:21,622 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2019-12-07 12:00:21,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 12:00:21,623 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:00:21,623 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:00:21,623 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 12:00:21,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:00:21,623 INFO L82 PathProgramCache]: Analyzing trace with hash 177687787, now seen corresponding path program 1 times [2019-12-07 12:00:21,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:00:21,624 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756777885] [2019-12-07 12:00:21,624 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:00:21,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:00:21,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:00:21,662 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756777885] [2019-12-07 12:00:21,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 12:00:21,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 12:00:21,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094821394] [2019-12-07 12:00:21,663 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 12:00:21,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 12:00:21,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 12:00:21,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 12:00:21,664 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 3 states. [2019-12-07 12:00:21,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:00:21,680 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2019-12-07 12:00:21,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 12:00:21,681 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-12-07 12:00:21,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:00:21,681 INFO L225 Difference]: With dead ends: 16 [2019-12-07 12:00:21,681 INFO L226 Difference]: Without dead ends: 11 [2019-12-07 12:00:21,682 INFO L630 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 [2019-12-07 12:00:21,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-12-07 12:00:21,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-12-07 12:00:21,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-12-07 12:00:21,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2019-12-07 12:00:21,684 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2019-12-07 12:00:21,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:00:21,684 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2019-12-07 12:00:21,684 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 12:00:21,684 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2019-12-07 12:00:21,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 12:00:21,685 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:00:21,685 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:00:21,685 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 12:00:21,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:00:21,685 INFO L82 PathProgramCache]: Analyzing trace with hash 468121936, now seen corresponding path program 1 times [2019-12-07 12:00:21,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:00:21,685 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490431242] [2019-12-07 12:00:21,685 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:00:21,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:00:21,720 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Undeclared function symbol (const Int) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.term(NoopScript.java:478) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.term(WrapperScript.java:250) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.term(WrapperScript.java:250) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.SmtUtils.termWithLocalSimplification(SmtUtils.java:1315) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.SmtUtils.termWithLocalSimplification(SmtUtils.java:1196) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.TermTransferrer.convertApplicationTerm(TermTransferrer.java:182) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer$BuildApplicationTerm.walk(TermTransformer.java:339) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.transform(TermTransformer.java:272) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computePredicates(NestedInterpolantsBuilder.java:573) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:171) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:300) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:202) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:107) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:139) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:126) 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) [2019-12-07 12:00:21,724 INFO L168 Benchmark]: Toolchain (without parser) took 671.95 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 85.5 MB). Free memory was 944.8 MB in the beginning and 1.0 GB in the end (delta: -79.4 MB). Peak memory consumption was 6.0 MB. Max. memory is 11.5 GB. [2019-12-07 12:00:21,724 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 960.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 12:00:21,725 INFO L168 Benchmark]: CACSL2BoogieTranslator took 179.94 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 85.5 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -135.3 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. [2019-12-07 12:00:21,725 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.40 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 12:00:21,725 INFO L168 Benchmark]: Boogie Preprocessor took 14.34 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 12:00:21,726 INFO L168 Benchmark]: RCFGBuilder took 158.15 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2019-12-07 12:00:21,726 INFO L168 Benchmark]: TraceAbstraction took 294.44 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 33.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 11.5 GB. [2019-12-07 12:00:21,728 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 960.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 179.94 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 85.5 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -135.3 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 22.40 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.34 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 158.15 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 294.44 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 33.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Undeclared function symbol (const Int) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Undeclared function symbol (const Int): de.uni_freiburg.informatik.ultimate.logic.NoopScript.term(NoopScript.java:478) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-f470102 [2019-12-07 12:00:23,057 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 12:00:23,058 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 12:00:23,066 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 12:00:23,066 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 12:00:23,067 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 12:00:23,068 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 12:00:23,069 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 12:00:23,071 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 12:00:23,071 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 12:00:23,072 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 12:00:23,073 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 12:00:23,073 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 12:00:23,073 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 12:00:23,074 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 12:00:23,075 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 12:00:23,076 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 12:00:23,077 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 12:00:23,078 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 12:00:23,080 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 12:00:23,081 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 12:00:23,082 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 12:00:23,083 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 12:00:23,084 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 12:00:23,086 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 12:00:23,086 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 12:00:23,087 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 12:00:23,087 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 12:00:23,088 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 12:00:23,089 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 12:00:23,089 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 12:00:23,089 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 12:00:23,090 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 12:00:23,090 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 12:00:23,091 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 12:00:23,091 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 12:00:23,091 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 12:00:23,092 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 12:00:23,092 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 12:00:23,092 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 12:00:23,093 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 12:00:23,093 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7ac2c64d-9aa3-43dc-9d32-b705e5e2a19f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-12-07 12:00:23,106 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 12:00:23,106 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 12:00:23,107 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 12:00:23,108 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 12:00:23,108 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 12:00:23,108 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 12:00:23,108 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 12:00:23,108 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 12:00:23,109 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 12:00:23,109 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 12:00:23,109 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 12:00:23,109 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 12:00:23,109 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 12:00:23,110 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 12:00:23,110 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 12:00:23,110 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 12:00:23,110 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 12:00:23,110 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 12:00:23,111 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 12:00:23,111 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 12:00:23,111 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 12:00:23,111 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 12:00:23,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 12:00:23,112 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 12:00:23,112 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 12:00:23,112 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 12:00:23,112 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-12-07 12:00:23,112 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 12:00:23,112 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 12:00:23,113 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 12:00:23,113 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 12:00:23,113 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_7ac2c64d-9aa3-43dc-9d32-b705e5e2a19f/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e954357898f010ea28e7deb5d5a1ae907cf090e4 [2019-12-07 12:00:23,290 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 12:00:23,298 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 12:00:23,300 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 12:00:23,301 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 12:00:23,301 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 12:00:23,302 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7ac2c64d-9aa3-43dc-9d32-b705e5e2a19f/bin/uautomizer/../../sv-benchmarks/c/loops/n.c40.c [2019-12-07 12:00:23,338 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7ac2c64d-9aa3-43dc-9d32-b705e5e2a19f/bin/uautomizer/data/2328c2821/00e17d4816684c24ba4905f0e159c30d/FLAG426b66333 [2019-12-07 12:00:23,782 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 12:00:23,782 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7ac2c64d-9aa3-43dc-9d32-b705e5e2a19f/sv-benchmarks/c/loops/n.c40.c [2019-12-07 12:00:23,786 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7ac2c64d-9aa3-43dc-9d32-b705e5e2a19f/bin/uautomizer/data/2328c2821/00e17d4816684c24ba4905f0e159c30d/FLAG426b66333 [2019-12-07 12:00:23,794 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7ac2c64d-9aa3-43dc-9d32-b705e5e2a19f/bin/uautomizer/data/2328c2821/00e17d4816684c24ba4905f0e159c30d [2019-12-07 12:00:23,796 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 12:00:23,797 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 12:00:23,797 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 12:00:23,798 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 12:00:23,800 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 12:00:23,800 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:00:23" (1/1) ... [2019-12-07 12:00:23,802 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23cf13fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:00:23, skipping insertion in model container [2019-12-07 12:00:23,802 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:00:23" (1/1) ... [2019-12-07 12:00:23,806 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 12:00:23,816 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 12:00:23,917 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 12:00:23,921 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 12:00:23,933 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 12:00:23,948 INFO L208 MainTranslator]: Completed translation [2019-12-07 12:00:23,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:00:23 WrapperNode [2019-12-07 12:00:23,949 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 12:00:23,949 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 12:00:23,949 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 12:00:23,950 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 12:00:23,987 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:00:23" (1/1) ... [2019-12-07 12:00:23,993 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:00:23" (1/1) ... [2019-12-07 12:00:24,005 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 12:00:24,005 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 12:00:24,005 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 12:00:24,005 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 12:00:24,011 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:00:23" (1/1) ... [2019-12-07 12:00:24,011 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:00:23" (1/1) ... [2019-12-07 12:00:24,013 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:00:23" (1/1) ... [2019-12-07 12:00:24,013 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:00:23" (1/1) ... [2019-12-07 12:00:24,016 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:00:23" (1/1) ... [2019-12-07 12:00:24,019 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:00:23" (1/1) ... [2019-12-07 12:00:24,020 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:00:23" (1/1) ... [2019-12-07 12:00:24,021 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 12:00:24,021 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 12:00:24,022 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 12:00:24,022 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 12:00:24,022 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:00:23" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7ac2c64d-9aa3-43dc-9d32-b705e5e2a19f/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 12:00:24,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2019-12-07 12:00:24,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 12:00:24,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 12:00:24,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2019-12-07 12:00:24,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 12:00:24,202 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 12:00:24,202 INFO L287 CfgBuilder]: Removed 5 assume(true) statements. [2019-12-07 12:00:24,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:00:24 BoogieIcfgContainer [2019-12-07 12:00:24,203 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 12:00:24,204 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 12:00:24,204 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 12:00:24,205 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 12:00:24,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 12:00:23" (1/3) ... [2019-12-07 12:00:24,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9627390 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:00:24, skipping insertion in model container [2019-12-07 12:00:24,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:00:23" (2/3) ... [2019-12-07 12:00:24,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9627390 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:00:24, skipping insertion in model container [2019-12-07 12:00:24,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:00:24" (3/3) ... [2019-12-07 12:00:24,207 INFO L109 eAbstractionObserver]: Analyzing ICFG n.c40.c [2019-12-07 12:00:24,214 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 12:00:24,218 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 12:00:24,225 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 12:00:24,239 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 12:00:24,240 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 12:00:24,240 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 12:00:24,240 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 12:00:24,240 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 12:00:24,240 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 12:00:24,240 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 12:00:24,240 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 12:00:24,249 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2019-12-07 12:00:24,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-07 12:00:24,252 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:00:24,253 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:00:24,253 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 12:00:24,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:00:24,257 INFO L82 PathProgramCache]: Analyzing trace with hash 1813493552, now seen corresponding path program 1 times [2019-12-07 12:00:24,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 12:00:24,264 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1175573065] [2019-12-07 12:00:24,264 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7ac2c64d-9aa3-43dc-9d32-b705e5e2a19f/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-12-07 12:00:24,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:00:24,307 INFO L264 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 1 conjunts are in the unsatisfiable core [2019-12-07 12:00:24,310 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:00:24,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:00:24,319 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:00:24,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:00:24,321 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1175573065] [2019-12-07 12:00:24,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 12:00:24,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-12-07 12:00:24,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927532993] [2019-12-07 12:00:24,325 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 12:00:24,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 12:00:24,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 12:00:24,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 12:00:24,335 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 2 states. [2019-12-07 12:00:24,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:00:24,345 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2019-12-07 12:00:24,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 12:00:24,346 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2019-12-07 12:00:24,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:00:24,352 INFO L225 Difference]: With dead ends: 22 [2019-12-07 12:00:24,352 INFO L226 Difference]: Without dead ends: 9 [2019-12-07 12:00:24,354 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 12:00:24,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-12-07 12:00:24,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-12-07 12:00:24,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-12-07 12:00:24,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2019-12-07 12:00:24,375 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2019-12-07 12:00:24,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:00:24,375 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2019-12-07 12:00:24,375 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 12:00:24,375 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2019-12-07 12:00:24,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 12:00:24,375 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:00:24,376 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:00:24,576 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 12:00:24,577 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 12:00:24,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:00:24,578 INFO L82 PathProgramCache]: Analyzing trace with hash 177687787, now seen corresponding path program 1 times [2019-12-07 12:00:24,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 12:00:24,579 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [373042086] [2019-12-07 12:00:24,579 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7ac2c64d-9aa3-43dc-9d32-b705e5e2a19f/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2019-12-07 12:00:24,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:00:24,615 INFO L264 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 12:00:24,616 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:00:24,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:00:24,635 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:00:24,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:00:24,660 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [373042086] [2019-12-07 12:00:24,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 12:00:24,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-12-07 12:00:24,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748883104] [2019-12-07 12:00:24,662 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 12:00:24,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 12:00:24,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 12:00:24,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 12:00:24,663 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 4 states. [2019-12-07 12:00:24,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:00:24,692 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2019-12-07 12:00:24,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 12:00:24,693 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-12-07 12:00:24,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:00:24,693 INFO L225 Difference]: With dead ends: 16 [2019-12-07 12:00:24,693 INFO L226 Difference]: Without dead ends: 11 [2019-12-07 12:00:24,694 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 12:00:24,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-12-07 12:00:24,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-12-07 12:00:24,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-12-07 12:00:24,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2019-12-07 12:00:24,696 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2019-12-07 12:00:24,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:00:24,697 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2019-12-07 12:00:24,697 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 12:00:24,697 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2019-12-07 12:00:24,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 12:00:24,697 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:00:24,697 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:00:24,898 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-12-07 12:00:24,899 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 12:00:24,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:00:24,900 INFO L82 PathProgramCache]: Analyzing trace with hash 468121936, now seen corresponding path program 1 times [2019-12-07 12:00:24,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 12:00:24,901 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [351435390] [2019-12-07 12:00:24,902 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7ac2c64d-9aa3-43dc-9d32-b705e5e2a19f/bin/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2019-12-07 12:00:24,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:00:24,972 INFO L264 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 12 conjunts are in the unsatisfiable core [2019-12-07 12:00:24,973 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:00:25,054 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:00:25,055 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 41 [2019-12-07 12:00:25,055 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 12:00:25,056 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 12:00:25,060 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 12:00:25,061 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 12:00:25,062 INFO L534 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-12-07 12:00:25,096 INFO L614 ElimStorePlain]: treesize reduction 14, result has 71.4 percent of original size [2019-12-07 12:00:25,097 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 12:00:25,098 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-12-07 12:00:25,099 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:36, output treesize:35 [2019-12-07 12:00:25,099 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 12:00:25,118 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 12:00:25,135 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 12:00:25,155 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 12:00:25,168 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:00:25,180 INFO L377 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 24 treesize of output 23 [2019-12-07 12:00:25,180 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 12:00:25,186 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:00:25,196 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:00:25,196 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 44 [2019-12-07 12:00:25,197 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 12:00:25,273 INFO L614 ElimStorePlain]: treesize reduction 16, result has 82.8 percent of original size [2019-12-07 12:00:25,274 INFO L534 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 2 xjuncts. [2019-12-07 12:00:25,274 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:85, output treesize:77 [2019-12-07 12:00:25,343 INFO L172 IndexEqualityManager]: detected equality via solver [2019-12-07 12:00:25,359 INFO L343 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2019-12-07 12:00:25,360 INFO L377 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 31 [2019-12-07 12:00:25,361 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 12:00:25,362 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 12:00:25,364 INFO L534 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-12-07 12:00:25,381 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:00:25,382 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 12:00:25,385 INFO L534 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 2 xjuncts. [2019-12-07 12:00:25,385 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:46, output treesize:32 [2019-12-07 12:00:25,430 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:00:25,430 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:00:25,723 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:00:25,723 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2019-12-07 12:00:25,724 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 12:00:25,728 INFO L430 ElimStorePlain]: Different costs {0=[v_arrayElimCell_9], 1=[v_arrayElimCell_10]} [2019-12-07 12:00:25,732 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [351435390] [2019-12-07 12:00:25,733 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.IncrementalPlicationChecker@a6daeda [2019-12-07 12:00:25,733 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1813305798] [2019-12-07 12:00:25,733 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7ac2c64d-9aa3-43dc-9d32-b705e5e2a19f/bin/uautomizer/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-12-07 12:00:25,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:00:25,793 INFO L264 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 12:00:25,793 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:00:25,795 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.IncrementalPlicationChecker@a6daeda [2019-12-07 12:00:25,795 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549956490] [2019-12-07 12:00:25,795 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7ac2c64d-9aa3-43dc-9d32-b705e5e2a19f/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:00:25,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:00:25,881 INFO L264 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 11 conjunts are in the unsatisfiable core [2019-12-07 12:00:25,882 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:00:25,882 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.IncrementalPlicationChecker@a6daeda [2019-12-07 12:00:25,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2019-12-07 12:00:25,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2019-12-07 12:00:25,883 ERROR L206 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2019-12-07 12:00:25,883 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 12:00:26,488 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3,5 cvc4 --incremental --print-success --lang smt --rewrite-divk,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:00:26,504 WARN L229 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2019-12-07 12:00:26,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 12:00:26 BoogieIcfgContainer [2019-12-07 12:00:26,504 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 12:00:26,505 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 12:00:26,505 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 12:00:26,505 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 12:00:26,505 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:00:24" (3/4) ... [2019-12-07 12:00:26,508 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 12:00:26,508 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 12:00:26,510 INFO L168 Benchmark]: Toolchain (without parser) took 2712.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 952.4 MB in the beginning and 968.5 MB in the end (delta: -16.1 MB). Peak memory consumption was 128.1 MB. Max. memory is 11.5 GB. [2019-12-07 12:00:26,510 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 12:00:26,510 INFO L168 Benchmark]: CACSL2BoogieTranslator took 151.69 ms. Allocated memory is still 1.0 GB. Free memory was 952.4 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-12-07 12:00:26,511 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.77 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -198.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. [2019-12-07 12:00:26,512 INFO L168 Benchmark]: Boogie Preprocessor took 16.03 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-12-07 12:00:26,512 INFO L168 Benchmark]: RCFGBuilder took 181.72 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: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 11.5 GB. [2019-12-07 12:00:26,512 INFO L168 Benchmark]: TraceAbstraction took 2300.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 968.5 MB in the end (delta: 147.6 MB). Peak memory consumption was 147.6 MB. Max. memory is 11.5 GB. [2019-12-07 12:00:26,513 INFO L168 Benchmark]: Witness Printer took 3.67 ms. Allocated memory is still 1.2 GB. Free memory is still 968.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 12:00:26,516 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 151.69 ms. Allocated memory is still 1.0 GB. Free memory was 952.4 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 55.77 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -198.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.03 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 181.72 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: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2300.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 968.5 MB in the end (delta: 147.6 MB). Peak memory consumption was 147.6 MB. Max. memory is 11.5 GB. * Witness Printer took 3.67 ms. Allocated memory is still 1.2 GB. Free memory is still 968.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 20]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L5] char x[100], y[100]; [L6] int i,j,k; [L9] k = __VERIFIER_nondet_int() [L11] i = 0 [L12] EXPR x[i] [L12] COND TRUE x[i] != 0 [L13] EXPR x[i] [L13] y[i] = x[i] [L14] i++ [L12] EXPR x[i] [L12] COND FALSE !(x[i] != 0) [L16] y[i] = 0 [L18] COND TRUE k >= 0 && k < i [L19] EXPR y[k] [L19] COND TRUE y[k] == 0 [L20] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Result: UNKNOWN, OverallTime: 2.2s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 20 SDtfs, 0 SDslu, 6 SDs, 0 SdLazy, 11 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 26 ConstructedInterpolants, 4 QuantifiedInterpolants, 478 SizeOfPredicates, 3 NumberOfNonLiveVariables, 57 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...