./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/for_infinite_loop_1_true-unreach-call_false-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_31deeec9-c226-4288-a68b-06ced205e906/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_31deeec9-c226-4288-a68b-06ced205e906/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_31deeec9-c226-4288-a68b-06ced205e906/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_31deeec9-c226-4288-a68b-06ced205e906/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/for_infinite_loop_1_true-unreach-call_false-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_31deeec9-c226-4288-a68b-06ced205e906/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_31deeec9-c226-4288-a68b-06ced205e906/bin-2019/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 84ccfa3799e430dcbaead172aed01f5a507c9465 .................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-22 22:33:27,199 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-22 22:33:27,200 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-22 22:33:27,209 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-22 22:33:27,209 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-22 22:33:27,210 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-22 22:33:27,211 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-22 22:33:27,212 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-22 22:33:27,213 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-22 22:33:27,214 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-22 22:33:27,215 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-22 22:33:27,215 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-22 22:33:27,216 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-22 22:33:27,217 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-22 22:33:27,218 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-22 22:33:27,218 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-22 22:33:27,219 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-22 22:33:27,220 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-22 22:33:27,222 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-22 22:33:27,223 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-22 22:33:27,225 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-22 22:33:27,226 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-22 22:33:27,228 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-22 22:33:27,228 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-22 22:33:27,228 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-22 22:33:27,229 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-22 22:33:27,230 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-22 22:33:27,230 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-22 22:33:27,231 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-22 22:33:27,232 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-22 22:33:27,232 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-22 22:33:27,233 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-22 22:33:27,233 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-22 22:33:27,233 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-22 22:33:27,234 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-22 22:33:27,234 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-22 22:33:27,235 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_31deeec9-c226-4288-a68b-06ced205e906/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-22 22:33:27,243 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-22 22:33:27,243 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-22 22:33:27,244 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-22 22:33:27,244 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-22 22:33:27,245 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-22 22:33:27,245 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-22 22:33:27,245 INFO L133 SettingsManager]: * Use SBE=true [2018-11-22 22:33:27,245 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-22 22:33:27,245 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-22 22:33:27,245 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-22 22:33:27,246 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-22 22:33:27,246 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-22 22:33:27,246 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-22 22:33:27,246 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-22 22:33:27,246 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-22 22:33:27,246 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-22 22:33:27,247 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-22 22:33:27,247 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-22 22:33:27,247 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-22 22:33:27,247 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-22 22:33:27,247 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-22 22:33:27,248 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-22 22:33:27,248 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-22 22:33:27,248 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-22 22:33:27,248 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-22 22:33:27,248 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-22 22:33:27,248 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-22 22:33:27,249 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-22 22:33:27,249 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-22 22:33:27,249 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-22 22:33:27,249 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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_31deeec9-c226-4288-a68b-06ced205e906/bin-2019/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 -> 84ccfa3799e430dcbaead172aed01f5a507c9465 [2018-11-22 22:33:27,276 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-22 22:33:27,286 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-22 22:33:27,289 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-22 22:33:27,290 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-22 22:33:27,290 INFO L276 PluginConnector]: CDTParser initialized [2018-11-22 22:33:27,291 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_31deeec9-c226-4288-a68b-06ced205e906/bin-2019/uautomizer/../../sv-benchmarks/c/loops/for_infinite_loop_1_true-unreach-call_false-termination.i [2018-11-22 22:33:27,335 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_31deeec9-c226-4288-a68b-06ced205e906/bin-2019/uautomizer/data/875b37471/413466a96aa8484fa5ba5cc4787fa3fd/FLAG5ab681fba [2018-11-22 22:33:27,682 INFO L307 CDTParser]: Found 1 translation units. [2018-11-22 22:33:27,682 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_31deeec9-c226-4288-a68b-06ced205e906/sv-benchmarks/c/loops/for_infinite_loop_1_true-unreach-call_false-termination.i [2018-11-22 22:33:27,687 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_31deeec9-c226-4288-a68b-06ced205e906/bin-2019/uautomizer/data/875b37471/413466a96aa8484fa5ba5cc4787fa3fd/FLAG5ab681fba [2018-11-22 22:33:28,123 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_31deeec9-c226-4288-a68b-06ced205e906/bin-2019/uautomizer/data/875b37471/413466a96aa8484fa5ba5cc4787fa3fd [2018-11-22 22:33:28,125 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-22 22:33:28,126 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-22 22:33:28,127 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-22 22:33:28,127 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-22 22:33:28,131 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-22 22:33:28,132 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:33:28" (1/1) ... [2018-11-22 22:33:28,134 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e234a26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:33:28, skipping insertion in model container [2018-11-22 22:33:28,134 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:33:28" (1/1) ... [2018-11-22 22:33:28,141 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-22 22:33:28,156 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-22 22:33:28,278 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-22 22:33:28,281 INFO L191 MainTranslator]: Completed pre-run [2018-11-22 22:33:28,292 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-22 22:33:28,301 INFO L195 MainTranslator]: Completed translation [2018-11-22 22:33:28,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:33:28 WrapperNode [2018-11-22 22:33:28,302 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-22 22:33:28,302 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-22 22:33:28,302 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-22 22:33:28,302 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-22 22:33:28,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:33:28" (1/1) ... [2018-11-22 22:33:28,312 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:33:28" (1/1) ... [2018-11-22 22:33:28,317 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-22 22:33:28,317 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-22 22:33:28,318 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-22 22:33:28,318 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-22 22:33:28,327 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:33:28" (1/1) ... [2018-11-22 22:33:28,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:33:28" (1/1) ... [2018-11-22 22:33:28,328 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:33:28" (1/1) ... [2018-11-22 22:33:28,328 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:33:28" (1/1) ... [2018-11-22 22:33:28,331 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:33:28" (1/1) ... [2018-11-22 22:33:28,336 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:33:28" (1/1) ... [2018-11-22 22:33:28,337 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:33:28" (1/1) ... [2018-11-22 22:33:28,338 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-22 22:33:28,338 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-22 22:33:28,339 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-22 22:33:28,339 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-22 22:33:28,340 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:33:28" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_31deeec9-c226-4288-a68b-06ced205e906/bin-2019/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 [2018-11-22 22:33:28,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-22 22:33:28,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-22 22:33:28,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-22 22:33:28,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-22 22:33:28,427 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-22 22:33:28,428 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-22 22:33:28,428 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-22 22:33:28,428 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-22 22:33:28,554 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-22 22:33:28,554 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-22 22:33:28,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:33:28 BoogieIcfgContainer [2018-11-22 22:33:28,555 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-22 22:33:28,556 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-22 22:33:28,556 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-22 22:33:28,559 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-22 22:33:28,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 10:33:28" (1/3) ... [2018-11-22 22:33:28,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38f9c679 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:33:28, skipping insertion in model container [2018-11-22 22:33:28,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:33:28" (2/3) ... [2018-11-22 22:33:28,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38f9c679 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:33:28, skipping insertion in model container [2018-11-22 22:33:28,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:33:28" (3/3) ... [2018-11-22 22:33:28,563 INFO L112 eAbstractionObserver]: Analyzing ICFG for_infinite_loop_1_true-unreach-call_false-termination.i [2018-11-22 22:33:28,573 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-22 22:33:28,580 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-22 22:33:28,598 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-22 22:33:28,628 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-22 22:33:28,629 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-22 22:33:28,629 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-22 22:33:28,629 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-22 22:33:28,629 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-22 22:33:28,629 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-22 22:33:28,629 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-22 22:33:28,630 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-22 22:33:28,630 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-22 22:33:28,647 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2018-11-22 22:33:28,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-22 22:33:28,653 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 22:33:28,654 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 22:33:28,656 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 22:33:28,661 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:33:28,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1285605631, now seen corresponding path program 1 times [2018-11-22 22:33:28,663 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 22:33:28,664 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 22:33:28,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:33:28,712 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 22:33:28,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:33:28,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 22:33:28,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 22:33:28,824 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 22:33:28,824 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-22 22:33:28,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-22 22:33:28,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-22 22:33:28,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-22 22:33:28,841 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 5 states. [2018-11-22 22:33:28,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 22:33:28,893 INFO L93 Difference]: Finished difference Result 31 states and 38 transitions. [2018-11-22 22:33:28,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-22 22:33:28,895 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-11-22 22:33:28,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 22:33:28,902 INFO L225 Difference]: With dead ends: 31 [2018-11-22 22:33:28,902 INFO L226 Difference]: Without dead ends: 0 [2018-11-22 22:33:28,905 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-22 22:33:28,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-22 22:33:28,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-22 22:33:28,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-22 22:33:28,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-22 22:33:28,928 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2018-11-22 22:33:28,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 22:33:28,928 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-22 22:33:28,928 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-22 22:33:28,928 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-22 22:33:28,928 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-22 22:33:28,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-22 22:33:28,952 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-22 22:33:28,952 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-22 22:33:28,952 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-22 22:33:28,952 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-22 22:33:28,953 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-22 22:33:28,953 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-22 22:33:28,953 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 10 20) the Hoare annotation is: true [2018-11-22 22:33:28,953 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 10 20) no Hoare annotation was computed. [2018-11-22 22:33:28,953 INFO L444 ceAbstractionStarter]: At program point L17(line 17) the Hoare annotation is: (= main_~x~0 0) [2018-11-22 22:33:28,953 INFO L448 ceAbstractionStarter]: For program point L17-1(lines 15 18) no Hoare annotation was computed. [2018-11-22 22:33:28,953 INFO L448 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2018-11-22 22:33:28,954 INFO L444 ceAbstractionStarter]: At program point L15-2(lines 15 18) the Hoare annotation is: (= main_~x~0 0) [2018-11-22 22:33:28,954 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 10 20) no Hoare annotation was computed. [2018-11-22 22:33:28,954 INFO L444 ceAbstractionStarter]: At program point L15-3(lines 15 18) the Hoare annotation is: false [2018-11-22 22:33:28,954 INFO L451 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-11-22 22:33:28,954 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-11-22 22:33:28,954 INFO L448 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-22 22:33:28,954 INFO L448 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-11-22 22:33:28,954 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-11-22 22:33:28,954 INFO L448 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-11-22 22:33:28,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 10:33:28 BoogieIcfgContainer [2018-11-22 22:33:28,967 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-22 22:33:28,968 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-22 22:33:28,968 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-22 22:33:28,968 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-22 22:33:28,968 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:33:28" (3/4) ... [2018-11-22 22:33:28,972 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-22 22:33:28,978 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-22 22:33:28,978 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-22 22:33:28,979 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-22 22:33:28,983 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2018-11-22 22:33:28,983 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-22 22:33:28,983 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-22 22:33:29,015 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_31deeec9-c226-4288-a68b-06ced205e906/bin-2019/uautomizer/witness.graphml [2018-11-22 22:33:29,015 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-22 22:33:29,016 INFO L168 Benchmark]: Toolchain (without parser) took 890.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.0 MB). Free memory was 959.1 MB in the beginning and 1.1 GB in the end (delta: -136.8 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. [2018-11-22 22:33:29,017 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-22 22:33:29,017 INFO L168 Benchmark]: CACSL2BoogieTranslator took 174.95 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-22 22:33:29,018 INFO L168 Benchmark]: Boogie Procedure Inliner took 14.98 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-22 22:33:29,018 INFO L168 Benchmark]: Boogie Preprocessor took 20.71 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-22 22:33:29,019 INFO L168 Benchmark]: RCFGBuilder took 216.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.0 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -186.3 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. [2018-11-22 22:33:29,019 INFO L168 Benchmark]: TraceAbstraction took 411.73 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: 32.8 MB). Peak memory consumption was 32.8 MB. Max. memory is 11.5 GB. [2018-11-22 22:33:29,020 INFO L168 Benchmark]: Witness Printer took 47.69 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: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. [2018-11-22 22:33:29,023 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 174.95 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 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 14.98 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.71 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 216.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.0 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -186.3 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 411.73 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: 32.8 MB). Peak memory consumption was 32.8 MB. Max. memory is 11.5 GB. * Witness Printer took 47.69 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: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: x == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. SAFE Result, 0.3s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 14 SDtfs, 8 SDslu, 33 SDs, 0 SdLazy, 7 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 10 PreInvPairs, 12 NumberOfFragments, 12 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 200 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...