./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test_cut_trace.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_7963de07-c601-4eaa-8592-1edd7f7b32c6/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_7963de07-c601-4eaa-8592-1edd7f7b32c6/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_7963de07-c601-4eaa-8592-1edd7f7b32c6/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_7963de07-c601-4eaa-8592-1edd7f7b32c6/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/test_cut_trace.i -s /tmp/vcloud-vcloud-master/worker/working_dir_7963de07-c601-4eaa-8592-1edd7f7b32c6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_7963de07-c601-4eaa-8592-1edd7f7b32c6/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 56095c86866c7ca9fc704f1b38229d948862465a ........................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 09:02:13,203 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 09:02:13,206 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 09:02:13,216 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 09:02:13,216 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 09:02:13,218 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 09:02:13,219 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 09:02:13,221 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 09:02:13,223 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 09:02:13,224 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 09:02:13,226 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 09:02:13,227 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 09:02:13,227 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 09:02:13,228 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 09:02:13,228 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 09:02:13,229 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 09:02:13,230 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 09:02:13,231 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 09:02:13,232 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 09:02:13,233 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 09:02:13,235 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 09:02:13,235 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 09:02:13,236 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 09:02:13,237 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 09:02:13,238 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 09:02:13,239 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 09:02:13,239 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 09:02:13,239 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 09:02:13,240 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 09:02:13,241 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 09:02:13,241 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 09:02:13,241 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 09:02:13,242 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 09:02:13,242 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 09:02:13,243 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 09:02:13,243 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 09:02:13,244 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 09:02:13,244 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 09:02:13,244 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 09:02:13,245 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 09:02:13,245 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 09:02:13,246 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_7963de07-c601-4eaa-8592-1edd7f7b32c6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-22 09:02:13,256 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 09:02:13,256 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 09:02:13,257 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 09:02:13,257 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 09:02:13,257 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 09:02:13,257 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 09:02:13,258 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 09:02:13,258 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 09:02:13,258 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 09:02:13,258 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 09:02:13,258 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 09:02:13,258 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 09:02:13,259 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 09:02:13,259 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 09:02:13,259 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 09:02:13,259 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 09:02:13,259 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 09:02:13,259 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 09:02:13,260 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 09:02:13,260 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 09:02:13,260 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 09:02:13,260 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 09:02:13,260 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 09:02:13,260 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 09:02:13,261 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 09:02:13,261 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 09:02:13,261 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 09:02:13,261 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 09:02:13,261 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/working_dir_7963de07-c601-4eaa-8592-1edd7f7b32c6/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 -> 56095c86866c7ca9fc704f1b38229d948862465a [2019-10-22 09:02:13,297 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 09:02:13,308 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 09:02:13,311 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 09:02:13,312 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 09:02:13,312 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 09:02:13,313 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_7963de07-c601-4eaa-8592-1edd7f7b32c6/bin/uautomizer/../../sv-benchmarks/c/ldv-regression/test_cut_trace.i [2019-10-22 09:02:13,368 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7963de07-c601-4eaa-8592-1edd7f7b32c6/bin/uautomizer/data/c6c8842e8/b39c630a39c64d4886222086478b8bef/FLAGfe262921e [2019-10-22 09:02:13,740 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 09:02:13,740 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_7963de07-c601-4eaa-8592-1edd7f7b32c6/sv-benchmarks/c/ldv-regression/test_cut_trace.i [2019-10-22 09:02:13,745 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7963de07-c601-4eaa-8592-1edd7f7b32c6/bin/uautomizer/data/c6c8842e8/b39c630a39c64d4886222086478b8bef/FLAGfe262921e [2019-10-22 09:02:13,756 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_7963de07-c601-4eaa-8592-1edd7f7b32c6/bin/uautomizer/data/c6c8842e8/b39c630a39c64d4886222086478b8bef [2019-10-22 09:02:13,760 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 09:02:13,761 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 09:02:13,762 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 09:02:13,762 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 09:02:13,765 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 09:02:13,765 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:02:13" (1/1) ... [2019-10-22 09:02:13,768 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68468750 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:13, skipping insertion in model container [2019-10-22 09:02:13,768 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:02:13" (1/1) ... [2019-10-22 09:02:13,774 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 09:02:13,785 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 09:02:13,889 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:02:13,893 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 09:02:13,959 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:02:13,972 INFO L192 MainTranslator]: Completed translation [2019-10-22 09:02:13,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:13 WrapperNode [2019-10-22 09:02:13,973 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 09:02:13,973 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 09:02:13,973 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 09:02:13,974 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 09:02:13,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:13" (1/1) ... [2019-10-22 09:02:13,985 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:13" (1/1) ... [2019-10-22 09:02:14,001 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 09:02:14,001 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 09:02:14,001 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 09:02:14,001 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 09:02:14,009 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:13" (1/1) ... [2019-10-22 09:02:14,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:13" (1/1) ... [2019-10-22 09:02:14,010 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:13" (1/1) ... [2019-10-22 09:02:14,010 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:13" (1/1) ... [2019-10-22 09:02:14,012 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:13" (1/1) ... [2019-10-22 09:02:14,014 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:13" (1/1) ... [2019-10-22 09:02:14,014 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:13" (1/1) ... [2019-10-22 09:02:14,015 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 09:02:14,016 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 09:02:14,016 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 09:02:14,016 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 09:02:14,017 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7963de07-c601-4eaa-8592-1edd7f7b32c6/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 [2019-10-22 09:02:14,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 09:02:14,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 09:02:14,195 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 09:02:14,196 INFO L284 CfgBuilder]: Removed 8 assume(true) statements. [2019-10-22 09:02:14,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:14 BoogieIcfgContainer [2019-10-22 09:02:14,197 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 09:02:14,199 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 09:02:14,199 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 09:02:14,202 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 09:02:14,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 09:02:13" (1/3) ... [2019-10-22 09:02:14,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77d00c63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:02:14, skipping insertion in model container [2019-10-22 09:02:14,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:13" (2/3) ... [2019-10-22 09:02:14,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77d00c63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:02:14, skipping insertion in model container [2019-10-22 09:02:14,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:14" (3/3) ... [2019-10-22 09:02:14,204 INFO L109 eAbstractionObserver]: Analyzing ICFG test_cut_trace.i [2019-10-22 09:02:14,214 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 09:02:14,220 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-10-22 09:02:14,232 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-10-22 09:02:14,250 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 09:02:14,250 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 09:02:14,250 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 09:02:14,250 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 09:02:14,250 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 09:02:14,251 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 09:02:14,251 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 09:02:14,251 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 09:02:14,263 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2019-10-22 09:02:14,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-10-22 09:02:14,268 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:14,268 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-10-22 09:02:14,269 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:14,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:14,274 INFO L82 PathProgramCache]: Analyzing trace with hash 30946, now seen corresponding path program 1 times [2019-10-22 09:02:14,279 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:14,279 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873209760] [2019-10-22 09:02:14,279 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:14,279 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:14,279 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:14,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:14,378 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 09:02:14,379 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873209760] [2019-10-22 09:02:14,380 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:14,380 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 09:02:14,380 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305509291] [2019-10-22 09:02:14,384 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 09:02:14,384 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:14,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 09:02:14,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 09:02:14,398 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2019-10-22 09:02:14,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:14,416 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2019-10-22 09:02:14,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 09:02:14,418 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-10-22 09:02:14,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:14,426 INFO L225 Difference]: With dead ends: 20 [2019-10-22 09:02:14,427 INFO L226 Difference]: Without dead ends: 6 [2019-10-22 09:02:14,429 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 09:02:14,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2019-10-22 09:02:14,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2019-10-22 09:02:14,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-10-22 09:02:14,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 5 transitions. [2019-10-22 09:02:14,455 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 5 transitions. Word has length 3 [2019-10-22 09:02:14,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:14,456 INFO L462 AbstractCegarLoop]: Abstraction has 6 states and 5 transitions. [2019-10-22 09:02:14,456 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 09:02:14,456 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 5 transitions. [2019-10-22 09:02:14,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-10-22 09:02:14,456 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:14,456 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-10-22 09:02:14,457 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:14,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:14,457 INFO L82 PathProgramCache]: Analyzing trace with hash 29683914, now seen corresponding path program 1 times [2019-10-22 09:02:14,457 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:14,457 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014491120] [2019-10-22 09:02:14,458 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:14,458 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:14,458 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:14,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:14,619 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 5 [2019-10-22 09:02:14,620 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 09:02:14,620 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014491120] [2019-10-22 09:02:14,621 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:14,621 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 09:02:14,621 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127020883] [2019-10-22 09:02:14,622 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 09:02:14,623 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:14,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 09:02:14,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 09:02:14,623 INFO L87 Difference]: Start difference. First operand 6 states and 5 transitions. Second operand 4 states. [2019-10-22 09:02:14,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:14,675 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-10-22 09:02:14,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 09:02:14,675 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-10-22 09:02:14,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:14,676 INFO L225 Difference]: With dead ends: 6 [2019-10-22 09:02:14,676 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 09:02:14,677 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-22 09:02:14,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 09:02:14,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 09:02:14,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 09:02:14,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 09:02:14,680 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2019-10-22 09:02:14,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:14,680 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 09:02:14,680 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 09:02:14,680 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 09:02:14,680 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 09:02:14,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-22 09:02:14,699 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-22 09:02:14,700 INFO L439 ceAbstractionStarter]: At program point L19(lines 13 20) the Hoare annotation is: (= ULTIMATE.start_main_~z~0 0) [2019-10-22 09:02:14,700 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2019-10-22 09:02:14,700 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-10-22 09:02:14,700 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-22 09:02:14,700 INFO L443 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2019-10-22 09:02:14,700 INFO L443 ceAbstractionStarter]: For program point L16(line 16) no Hoare annotation was computed. [2019-10-22 09:02:14,701 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2019-10-22 09:02:14,701 INFO L443 ceAbstractionStarter]: For program point L6(line 6) no Hoare annotation was computed. [2019-10-22 09:02:14,701 INFO L443 ceAbstractionStarter]: For program point L6-1(line 6) no Hoare annotation was computed. [2019-10-22 09:02:14,701 INFO L443 ceAbstractionStarter]: For program point L4(lines 1 20) no Hoare annotation was computed. [2019-10-22 09:02:14,701 INFO L443 ceAbstractionStarter]: For program point L4-1(lines 1 20) no Hoare annotation was computed. [2019-10-22 09:02:14,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 09:02:14 BoogieIcfgContainer [2019-10-22 09:02:14,712 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 09:02:14,712 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 09:02:14,712 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 09:02:14,713 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 09:02:14,713 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:14" (3/4) ... [2019-10-22 09:02:14,717 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 09:02:14,726 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-10-22 09:02:14,726 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-10-22 09:02:14,761 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_7963de07-c601-4eaa-8592-1edd7f7b32c6/bin/uautomizer/witness.graphml [2019-10-22 09:02:14,766 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 09:02:14,767 INFO L168 Benchmark]: Toolchain (without parser) took 1006.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 950.0 MB in the beginning and 1.1 GB in the end (delta: -111.9 MB). Peak memory consumption was 12.4 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:14,768 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:02:14,768 INFO L168 Benchmark]: CACSL2BoogieTranslator took 211.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 950.0 MB in the beginning and 1.1 GB in the end (delta: -164.7 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:14,768 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.65 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 09:02:14,769 INFO L168 Benchmark]: Boogie Preprocessor took 14.38 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 09:02:14,769 INFO L168 Benchmark]: RCFGBuilder took 181.08 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: 15.4 MB). Peak memory consumption was 15.4 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:14,769 INFO L168 Benchmark]: TraceAbstraction took 513.13 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: 30.3 MB). Peak memory consumption was 30.3 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:14,772 INFO L168 Benchmark]: Witness Printer took 53.55 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: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:14,774 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 211.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 950.0 MB in the beginning and 1.1 GB in the end (delta: -164.7 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 27.65 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.38 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 181.08 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: 15.4 MB). Peak memory consumption was 15.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 513.13 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: 30.3 MB). Peak memory consumption was 30.3 MB. Max. memory is 11.5 GB. * Witness Printer took 53.55 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: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 6]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: z == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 2 error locations. Result: SAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 8 SDtfs, 9 SDslu, 0 SDs, 0 SdLazy, 6 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred 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: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 2 NumberOfFragments, 3 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 64 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 proved your program to be correct! Received shutdown request...