./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invariants/even.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_74e9356b-b713-4f9f-bdf0-89f6245aa80b/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_74e9356b-b713-4f9f-bdf0-89f6245aa80b/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_74e9356b-b713-4f9f-bdf0-89f6245aa80b/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_74e9356b-b713-4f9f-bdf0-89f6245aa80b/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-invariants/even.c -s /tmp/vcloud-vcloud-master/worker/run_dir_74e9356b-b713-4f9f-bdf0-89f6245aa80b/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_74e9356b-b713-4f9f-bdf0-89f6245aa80b/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 0da6bb15567d40fa620ab6e47e9e189bd3f064b0 ...................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 10:07:39,276 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 10:07:39,278 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 10:07:39,285 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 10:07:39,285 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 10:07:39,286 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 10:07:39,287 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 10:07:39,288 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 10:07:39,290 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 10:07:39,290 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 10:07:39,291 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 10:07:39,292 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 10:07:39,292 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 10:07:39,292 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 10:07:39,293 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 10:07:39,294 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 10:07:39,294 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 10:07:39,295 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 10:07:39,296 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 10:07:39,298 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 10:07:39,299 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 10:07:39,300 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 10:07:39,301 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 10:07:39,301 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 10:07:39,303 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 10:07:39,303 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 10:07:39,303 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 10:07:39,304 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 10:07:39,304 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 10:07:39,305 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 10:07:39,305 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 10:07:39,305 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 10:07:39,306 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 10:07:39,306 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 10:07:39,307 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 10:07:39,307 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 10:07:39,307 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 10:07:39,307 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 10:07:39,307 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 10:07:39,308 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 10:07:39,308 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 10:07:39,309 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_74e9356b-b713-4f9f-bdf0-89f6245aa80b/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 10:07:39,318 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 10:07:39,318 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 10:07:39,319 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 10:07:39,319 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 10:07:39,319 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 10:07:39,319 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 10:07:39,319 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 10:07:39,319 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 10:07:39,320 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 10:07:39,320 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 10:07:39,320 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 10:07:39,320 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 10:07:39,320 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 10:07:39,320 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 10:07:39,320 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 10:07:39,320 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 10:07:39,320 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 10:07:39,321 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 10:07:39,321 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 10:07:39,321 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 10:07:39,321 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 10:07:39,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 10:07:39,321 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 10:07:39,321 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 10:07:39,321 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 10:07:39,322 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 10:07:39,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 10:07:39,322 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 10:07:39,322 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 10:07:39,322 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_74e9356b-b713-4f9f-bdf0-89f6245aa80b/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 -> 0da6bb15567d40fa620ab6e47e9e189bd3f064b0 [2019-12-07 10:07:39,423 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 10:07:39,433 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 10:07:39,436 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 10:07:39,437 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 10:07:39,437 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 10:07:39,438 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_74e9356b-b713-4f9f-bdf0-89f6245aa80b/bin/uautomizer/../../sv-benchmarks/c/loop-invariants/even.c [2019-12-07 10:07:39,482 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_74e9356b-b713-4f9f-bdf0-89f6245aa80b/bin/uautomizer/data/674b5dd71/64840977bbba4c778ad995844a83108e/FLAG373660852 [2019-12-07 10:07:39,898 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 10:07:39,898 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_74e9356b-b713-4f9f-bdf0-89f6245aa80b/sv-benchmarks/c/loop-invariants/even.c [2019-12-07 10:07:39,902 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_74e9356b-b713-4f9f-bdf0-89f6245aa80b/bin/uautomizer/data/674b5dd71/64840977bbba4c778ad995844a83108e/FLAG373660852 [2019-12-07 10:07:39,911 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_74e9356b-b713-4f9f-bdf0-89f6245aa80b/bin/uautomizer/data/674b5dd71/64840977bbba4c778ad995844a83108e [2019-12-07 10:07:39,913 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 10:07:39,914 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 10:07:39,915 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 10:07:39,915 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 10:07:39,918 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 10:07:39,919 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 10:07:39" (1/1) ... [2019-12-07 10:07:39,920 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f12ee6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:07:39, skipping insertion in model container [2019-12-07 10:07:39,921 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 10:07:39" (1/1) ... [2019-12-07 10:07:39,926 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 10:07:39,936 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 10:07:40,030 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 10:07:40,032 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 10:07:40,071 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 10:07:40,080 INFO L208 MainTranslator]: Completed translation [2019-12-07 10:07:40,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:07:40 WrapperNode [2019-12-07 10:07:40,080 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 10:07:40,081 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 10:07:40,081 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 10:07:40,081 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 10:07:40,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:07:40" (1/1) ... [2019-12-07 10:07:40,090 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:07:40" (1/1) ... [2019-12-07 10:07:40,101 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 10:07:40,101 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 10:07:40,101 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 10:07:40,101 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 10:07:40,107 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:07:40" (1/1) ... [2019-12-07 10:07:40,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:07:40" (1/1) ... [2019-12-07 10:07:40,107 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:07:40" (1/1) ... [2019-12-07 10:07:40,107 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:07:40" (1/1) ... [2019-12-07 10:07:40,109 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:07:40" (1/1) ... [2019-12-07 10:07:40,111 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:07:40" (1/1) ... [2019-12-07 10:07:40,111 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:07:40" (1/1) ... [2019-12-07 10:07:40,112 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 10:07:40,112 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 10:07:40,113 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 10:07:40,113 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 10:07:40,113 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:07:40" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_74e9356b-b713-4f9f-bdf0-89f6245aa80b/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 10:07:40,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 10:07:40,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 10:07:40,248 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 10:07:40,248 INFO L287 CfgBuilder]: Removed 7 assume(true) statements. [2019-12-07 10:07:40,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:07:40 BoogieIcfgContainer [2019-12-07 10:07:40,249 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 10:07:40,250 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 10:07:40,250 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 10:07:40,252 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 10:07:40,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 10:07:39" (1/3) ... [2019-12-07 10:07:40,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f0f99de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 10:07:40, skipping insertion in model container [2019-12-07 10:07:40,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:07:40" (2/3) ... [2019-12-07 10:07:40,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f0f99de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 10:07:40, skipping insertion in model container [2019-12-07 10:07:40,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:07:40" (3/3) ... [2019-12-07 10:07:40,254 INFO L109 eAbstractionObserver]: Analyzing ICFG even.c [2019-12-07 10:07:40,260 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 10:07:40,264 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 10:07:40,272 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 10:07:40,286 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 10:07:40,286 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 10:07:40,286 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 10:07:40,286 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 10:07:40,286 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 10:07:40,286 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 10:07:40,286 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 10:07:40,287 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 10:07:40,295 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-12-07 10:07:40,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-07 10:07:40,298 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:07:40,299 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-12-07 10:07:40,299 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:07:40,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:07:40,303 INFO L82 PathProgramCache]: Analyzing trace with hash 29954948, now seen corresponding path program 1 times [2019-12-07 10:07:40,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:07:40,309 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807459299] [2019-12-07 10:07:40,309 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:07:40,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:07:40,373 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 10:07:40,374 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807459299] [2019-12-07 10:07:40,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:07:40,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 10:07:40,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945782208] [2019-12-07 10:07:40,379 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 10:07:40,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 10:07:40,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 10:07:40,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 10:07:40,389 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2019-12-07 10:07:40,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:07:40,399 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2019-12-07 10:07:40,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 10:07:40,399 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2019-12-07 10:07:40,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:07:40,405 INFO L225 Difference]: With dead ends: 19 [2019-12-07 10:07:40,405 INFO L226 Difference]: Without dead ends: 7 [2019-12-07 10:07:40,407 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 10:07:40,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2019-12-07 10:07:40,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-12-07 10:07:40,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-12-07 10:07:40,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2019-12-07 10:07:40,428 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2019-12-07 10:07:40,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:07:40,428 INFO L462 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2019-12-07 10:07:40,428 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 10:07:40,428 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2019-12-07 10:07:40,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-07 10:07:40,428 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:07:40,429 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-07 10:07:40,429 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:07:40,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:07:40,429 INFO L82 PathProgramCache]: Analyzing trace with hash 921957070, now seen corresponding path program 1 times [2019-12-07 10:07:40,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:07:40,429 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123432393] [2019-12-07 10:07:40,430 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:07:40,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:07:42,564 WARN L192 SmtUtils]: Spent 2.07 s on a formula simplification. DAG size of input: 43 DAG size of output: 15 [2019-12-07 10:07:42,572 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 10:07:42,572 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123432393] [2019-12-07 10:07:42,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:07:42,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 10:07:42,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240398722] [2019-12-07 10:07:42,573 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 10:07:42,573 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 10:07:42,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 10:07:42,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 10:07:42,574 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 4 states. [2019-12-07 10:07:42,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:07:42,599 INFO L93 Difference]: Finished difference Result 7 states and 7 transitions. [2019-12-07 10:07:42,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 10:07:42,600 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2019-12-07 10:07:42,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:07:42,600 INFO L225 Difference]: With dead ends: 7 [2019-12-07 10:07:42,600 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 10:07:42,601 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 10:07:42,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 10:07:42,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 10:07:42,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 10:07:42,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 10:07:42,602 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2019-12-07 10:07:42,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:07:42,602 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 10:07:42,602 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 10:07:42,603 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 10:07:42,603 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 10:07:42,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-12-07 10:07:42,623 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-12-07 10:07:42,624 INFO L249 CegarLoopResult]: At program point L15(lines 9 16) the Hoare annotation is: true [2019-12-07 10:07:42,624 INFO L246 CegarLoopResult]: For program point L11-1(lines 11 13) no Hoare annotation was computed. [2019-12-07 10:07:42,624 INFO L242 CegarLoopResult]: At program point L11-3(lines 11 13) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x~0 (let ((.cse0 (div ULTIMATE.start_main_~x~0 2))) (+ (* 2 .cse0) (* 4294967296 (div (+ (* .cse0 (- 2)) ULTIMATE.start_main_~x~0) 4294967296))))) (<= 0 ULTIMATE.start_main_~x~0)) [2019-12-07 10:07:42,624 INFO L246 CegarLoopResult]: For program point L11-4(lines 11 13) no Hoare annotation was computed. [2019-12-07 10:07:42,624 INFO L246 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2019-12-07 10:07:42,624 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-12-07 10:07:42,624 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-12-07 10:07:42,624 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-12-07 10:07:42,625 INFO L246 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-12-07 10:07:42,625 INFO L249 CegarLoopResult]: At program point L4-2(lines 3 8) the Hoare annotation is: true [2019-12-07 10:07:42,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 10:07:42 BoogieIcfgContainer [2019-12-07 10:07:42,635 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 10:07:42,636 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 10:07:42,636 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 10:07:42,636 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 10:07:42,636 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:07:40" (3/4) ... [2019-12-07 10:07:42,638 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 10:07:42,644 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-12-07 10:07:42,644 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-12-07 10:07:42,669 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_74e9356b-b713-4f9f-bdf0-89f6245aa80b/bin/uautomizer/witness.graphml [2019-12-07 10:07:42,670 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 10:07:42,671 INFO L168 Benchmark]: Toolchain (without parser) took 2756.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.4 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -120.2 MB). Peak memory consumption was 7.2 MB. Max. memory is 11.5 GB. [2019-12-07 10:07:42,671 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 955.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 10:07:42,672 INFO L168 Benchmark]: CACSL2BoogieTranslator took 165.43 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.4 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -185.5 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-12-07 10:07:42,672 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.81 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. [2019-12-07 10:07:42,672 INFO L168 Benchmark]: Boogie Preprocessor took 11.32 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. [2019-12-07 10:07:42,672 INFO L168 Benchmark]: RCFGBuilder took 136.90 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: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2019-12-07 10:07:42,673 INFO L168 Benchmark]: TraceAbstraction took 2385.47 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: 40.3 MB). Peak memory consumption was 40.3 MB. Max. memory is 11.5 GB. [2019-12-07 10:07:42,673 INFO L168 Benchmark]: Witness Printer took 34.15 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 10:07:42,676 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 955.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 165.43 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.4 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -185.5 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 19.81 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 11.32 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 136.90 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: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2385.47 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: 40.3 MB). Peak memory consumption was 40.3 MB. Max. memory is 11.5 GB. * Witness Printer took 34.15 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: 5.4 MB). Peak memory consumption was 5.4 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: 9]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: x <= 2 * (x / 2) + 4294967296 * ((x / 2 * -2 + x) / 4294967296) && 0 <= x - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Result: SAFE, OverallTime: 2.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 14 SDtfs, 1 SDslu, 3 SDs, 0 SdLazy, 3 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred 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, 3 LocationsWithAnnotation, 3 PreInvPairs, 5 NumberOfFragments, 25 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 386 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...