./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-acceleration/multivar_1-1.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8bd4bc60 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-acceleration/multivar_1-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 47ad01c017bb4213ccbeb2beae10f17d6888c844 .............................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-acceleration/multivar_1-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 47ad01c017bb4213ccbeb2beae10f17d6888c844 ........................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-8bd4bc6 [2020-07-28 18:13:27,302 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 18:13:27,304 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 18:13:27,326 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 18:13:27,326 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 18:13:27,328 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 18:13:27,331 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 18:13:27,344 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 18:13:27,347 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 18:13:27,349 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 18:13:27,351 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 18:13:27,354 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 18:13:27,354 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 18:13:27,358 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 18:13:27,360 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 18:13:27,362 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 18:13:27,364 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 18:13:27,366 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 18:13:27,369 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 18:13:27,374 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 18:13:27,379 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 18:13:27,382 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 18:13:27,386 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 18:13:27,387 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 18:13:27,390 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 18:13:27,391 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 18:13:27,392 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 18:13:27,394 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 18:13:27,394 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 18:13:27,395 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 18:13:27,395 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 18:13:27,397 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 18:13:27,397 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 18:13:27,398 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 18:13:27,399 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 18:13:27,400 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 18:13:27,400 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 18:13:27,401 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 18:13:27,401 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 18:13:27,402 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 18:13:27,403 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 18:13:27,404 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-28 18:13:27,427 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 18:13:27,427 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 18:13:27,429 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 18:13:27,430 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 18:13:27,430 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 18:13:27,430 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 18:13:27,430 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 18:13:27,431 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-28 18:13:27,431 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 18:13:27,431 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 18:13:27,432 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 18:13:27,432 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 18:13:27,433 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 18:13:27,433 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 18:13:27,433 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 18:13:27,434 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 18:13:27,434 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 18:13:27,434 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 18:13:27,434 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 18:13:27,435 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 18:13:27,435 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 18:13:27,435 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 18:13:27,435 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 18:13:27,435 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 18:13:27,436 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 18:13:27,436 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-28 18:13:27,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-28 18:13:27,436 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 18:13:27,437 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 18:13:27,437 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 -> 47ad01c017bb4213ccbeb2beae10f17d6888c844 [2020-07-28 18:13:27,770 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 18:13:27,783 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 18:13:27,786 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 18:13:27,788 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 18:13:27,789 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 18:13:27,789 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-acceleration/multivar_1-1.c [2020-07-28 18:13:27,852 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b98d2f156/fb970ac51d434ee39eb8f52683db4320/FLAGe5cdbc036 [2020-07-28 18:13:28,279 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 18:13:28,280 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-acceleration/multivar_1-1.c [2020-07-28 18:13:28,284 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b98d2f156/fb970ac51d434ee39eb8f52683db4320/FLAGe5cdbc036 [2020-07-28 18:13:28,695 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b98d2f156/fb970ac51d434ee39eb8f52683db4320 [2020-07-28 18:13:28,698 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 18:13:28,702 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 18:13:28,703 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 18:13:28,703 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 18:13:28,707 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 18:13:28,709 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 06:13:28" (1/1) ... [2020-07-28 18:13:28,712 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fc015a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:13:28, skipping insertion in model container [2020-07-28 18:13:28,712 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 06:13:28" (1/1) ... [2020-07-28 18:13:28,720 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 18:13:28,737 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 18:13:28,933 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 18:13:28,938 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 18:13:28,954 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 18:13:28,969 INFO L208 MainTranslator]: Completed translation [2020-07-28 18:13:28,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:13:28 WrapperNode [2020-07-28 18:13:28,970 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 18:13:28,970 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 18:13:28,971 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 18:13:28,971 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 18:13:28,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:13:28" (1/1) ... [2020-07-28 18:13:28,985 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:13:28" (1/1) ... [2020-07-28 18:13:29,057 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 18:13:29,057 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 18:13:29,058 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 18:13:29,058 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 18:13:29,065 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:13:28" (1/1) ... [2020-07-28 18:13:29,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:13:28" (1/1) ... [2020-07-28 18:13:29,066 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:13:28" (1/1) ... [2020-07-28 18:13:29,066 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:13:28" (1/1) ... [2020-07-28 18:13:29,068 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:13:28" (1/1) ... [2020-07-28 18:13:29,074 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:13:28" (1/1) ... [2020-07-28 18:13:29,075 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:13:28" (1/1) ... [2020-07-28 18:13:29,076 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 18:13:29,076 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 18:13:29,076 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 18:13:29,077 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 18:13:29,077 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:13:28" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-07-28 18:13:29,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 18:13:29,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 18:13:29,304 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 18:13:29,305 INFO L295 CfgBuilder]: Removed 7 assume(true) statements. [2020-07-28 18:13:29,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 06:13:29 BoogieIcfgContainer [2020-07-28 18:13:29,308 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 18:13:29,309 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 18:13:29,309 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 18:13:29,312 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 18:13:29,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 06:13:28" (1/3) ... [2020-07-28 18:13:29,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2995e6bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 06:13:29, skipping insertion in model container [2020-07-28 18:13:29,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:13:28" (2/3) ... [2020-07-28 18:13:29,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2995e6bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 06:13:29, skipping insertion in model container [2020-07-28 18:13:29,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 06:13:29" (3/3) ... [2020-07-28 18:13:29,316 INFO L109 eAbstractionObserver]: Analyzing ICFG multivar_1-1.c [2020-07-28 18:13:29,326 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 18:13:29,333 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 18:13:29,346 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 18:13:29,367 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 18:13:29,368 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 18:13:29,368 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 18:13:29,368 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 18:13:29,368 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 18:13:29,368 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 18:13:29,368 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 18:13:29,369 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 18:13:29,385 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-07-28 18:13:29,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-07-28 18:13:29,393 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 18:13:29,394 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-07-28 18:13:29,394 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 18:13:29,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 18:13:29,399 INFO L82 PathProgramCache]: Analyzing trace with hash 29805000, now seen corresponding path program 1 times [2020-07-28 18:13:29,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 18:13:29,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645194331] [2020-07-28 18:13:29,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 18:13:29,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 18:13:29,525 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-28 18:13:29,525 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError at de.uni_freiburg.informatik.ultimate.smtinterpol.proof.FixResolutionProof.fix(FixResolutionProof.java:191) at de.uni_freiburg.informatik.ultimate.smtinterpol.proof.ProofTermGenerator.convert(ProofTermGenerator.java:150) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getProof(SMTInterpol.java:797) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:392) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:386) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-28 18:13:29,532 INFO L168 Benchmark]: Toolchain (without parser) took 830.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 953.5 MB in the beginning and 1.1 GB in the end (delta: -151.5 MB). There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 18:13:29,533 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 1.0 GB. Free memory is still 981.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 18:13:29,534 INFO L168 Benchmark]: CACSL2BoogieTranslator took 266.98 ms. Allocated memory is still 1.0 GB. Free memory was 953.5 MB in the beginning and 942.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-28 18:13:29,535 INFO L168 Benchmark]: Boogie Procedure Inliner took 86.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 942.8 MB in the beginning and 1.1 GB in the end (delta: -194.3 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2020-07-28 18:13:29,536 INFO L168 Benchmark]: Boogie Preprocessor took 18.48 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. [2020-07-28 18:13:29,537 INFO L168 Benchmark]: RCFGBuilder took 231.75 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 11.5 GB. [2020-07-28 18:13:29,539 INFO L168 Benchmark]: TraceAbstraction took 219.00 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: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 11.5 GB. [2020-07-28 18:13:29,545 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 1.0 GB. Free memory is still 981.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 266.98 ms. Allocated memory is still 1.0 GB. Free memory was 953.5 MB in the beginning and 942.8 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 86.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 942.8 MB in the beginning and 1.1 GB in the end (delta: -194.3 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.48 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 231.75 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 219.00 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: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: null: de.uni_freiburg.informatik.ultimate.smtinterpol.proof.FixResolutionProof.fix(FixResolutionProof.java:191) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-8bd4bc6 [2020-07-28 18:13:31,485 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 18:13:31,489 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 18:13:31,507 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 18:13:31,508 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 18:13:31,510 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 18:13:31,512 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 18:13:31,524 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 18:13:31,528 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 18:13:31,532 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 18:13:31,534 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 18:13:31,536 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 18:13:31,537 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 18:13:31,539 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 18:13:31,541 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 18:13:31,542 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 18:13:31,543 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 18:13:31,544 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 18:13:31,547 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 18:13:31,551 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 18:13:31,556 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 18:13:31,561 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 18:13:31,563 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 18:13:31,564 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 18:13:31,566 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 18:13:31,567 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 18:13:31,567 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 18:13:31,569 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 18:13:31,570 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 18:13:31,572 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 18:13:31,572 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 18:13:31,573 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 18:13:31,574 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 18:13:31,575 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 18:13:31,576 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 18:13:31,577 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 18:13:31,577 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 18:13:31,578 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 18:13:31,578 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 18:13:31,579 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 18:13:31,580 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 18:13:31,581 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-07-28 18:13:31,614 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 18:13:31,617 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 18:13:31,619 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 18:13:31,621 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 18:13:31,621 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 18:13:31,622 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 18:13:31,622 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 18:13:31,622 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 18:13:31,623 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 18:13:31,623 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 18:13:31,624 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 18:13:31,624 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 18:13:31,625 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-07-28 18:13:31,625 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-07-28 18:13:31,625 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 18:13:31,626 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 18:13:31,626 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 18:13:31,626 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 18:13:31,626 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 18:13:31,627 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 18:13:31,627 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 18:13:31,627 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 18:13:31,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 18:13:31,628 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 18:13:31,628 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 18:13:31,629 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 18:13:31,629 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-07-28 18:13:31,629 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-07-28 18:13:31,629 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 18:13:31,630 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 18:13:31,630 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-28 18:13:31,630 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 -> 47ad01c017bb4213ccbeb2beae10f17d6888c844 [2020-07-28 18:13:31,952 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 18:13:31,966 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 18:13:31,971 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 18:13:31,973 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 18:13:31,974 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 18:13:31,974 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-acceleration/multivar_1-1.c [2020-07-28 18:13:32,038 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bc81d8d4/0dc5f8c890e748148594a9fe8d3fc962/FLAG4dfba939e [2020-07-28 18:13:32,440 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 18:13:32,441 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-acceleration/multivar_1-1.c [2020-07-28 18:13:32,448 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bc81d8d4/0dc5f8c890e748148594a9fe8d3fc962/FLAG4dfba939e [2020-07-28 18:13:32,846 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bc81d8d4/0dc5f8c890e748148594a9fe8d3fc962 [2020-07-28 18:13:32,850 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 18:13:32,853 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 18:13:32,854 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 18:13:32,855 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 18:13:32,858 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 18:13:32,861 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 06:13:32" (1/1) ... [2020-07-28 18:13:32,865 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fc015a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:13:32, skipping insertion in model container [2020-07-28 18:13:32,865 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 06:13:32" (1/1) ... [2020-07-28 18:13:32,874 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 18:13:32,896 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 18:13:33,104 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 18:13:33,115 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 18:13:33,137 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 18:13:33,155 INFO L208 MainTranslator]: Completed translation [2020-07-28 18:13:33,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:13:33 WrapperNode [2020-07-28 18:13:33,156 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 18:13:33,158 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 18:13:33,158 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 18:13:33,160 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 18:13:33,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:13:33" (1/1) ... [2020-07-28 18:13:33,254 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:13:33" (1/1) ... [2020-07-28 18:13:33,277 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 18:13:33,278 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 18:13:33,278 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 18:13:33,278 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 18:13:33,288 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:13:33" (1/1) ... [2020-07-28 18:13:33,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:13:33" (1/1) ... [2020-07-28 18:13:33,290 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:13:33" (1/1) ... [2020-07-28 18:13:33,290 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:13:33" (1/1) ... [2020-07-28 18:13:33,296 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:13:33" (1/1) ... [2020-07-28 18:13:33,304 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:13:33" (1/1) ... [2020-07-28 18:13:33,305 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:13:33" (1/1) ... [2020-07-28 18:13:33,306 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 18:13:33,306 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 18:13:33,307 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 18:13:33,307 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 18:13:33,308 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:13:33" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-07-28 18:13:33,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 18:13:33,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 18:13:33,592 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 18:13:33,592 INFO L295 CfgBuilder]: Removed 7 assume(true) statements. [2020-07-28 18:13:33,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 06:13:33 BoogieIcfgContainer [2020-07-28 18:13:33,595 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 18:13:33,596 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 18:13:33,597 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 18:13:33,600 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 18:13:33,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 06:13:32" (1/3) ... [2020-07-28 18:13:33,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fb04d8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 06:13:33, skipping insertion in model container [2020-07-28 18:13:33,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:13:33" (2/3) ... [2020-07-28 18:13:33,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fb04d8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 06:13:33, skipping insertion in model container [2020-07-28 18:13:33,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 06:13:33" (3/3) ... [2020-07-28 18:13:33,603 INFO L109 eAbstractionObserver]: Analyzing ICFG multivar_1-1.c [2020-07-28 18:13:33,614 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 18:13:33,621 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 18:13:33,632 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 18:13:33,656 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 18:13:33,656 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 18:13:33,656 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 18:13:33,656 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 18:13:33,656 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 18:13:33,657 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 18:13:33,657 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 18:13:33,657 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 18:13:33,672 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-07-28 18:13:33,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-07-28 18:13:33,679 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 18:13:33,680 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-07-28 18:13:33,680 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 18:13:33,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 18:13:33,687 INFO L82 PathProgramCache]: Analyzing trace with hash 29805000, now seen corresponding path program 1 times [2020-07-28 18:13:33,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-07-28 18:13:33,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [506311808] [2020-07-28 18:13:33,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-07-28 18:13:33,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 18:13:33,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-28 18:13:33,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 18:13:33,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-28 18:13:33,865 INFO L280 TraceCheckUtils]: 0: Hoare triple {12#true} havoc main_#res;havoc main_#t~nondet0, main_#t~post1, main_#t~post2, main_~x~0, main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_~x~0; {17#(= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~x~0)} is VALID [2020-07-28 18:13:33,866 INFO L280 TraceCheckUtils]: 1: Hoare triple {17#(= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~x~0)} assume !~bvult32(main_~x~0, 1024bv32); {17#(= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~x~0)} is VALID [2020-07-28 18:13:33,868 INFO L280 TraceCheckUtils]: 2: Hoare triple {17#(= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~x~0)} __VERIFIER_assert_#in~cond := (if main_~x~0 == main_~y~0 then 1bv32 else 0bv32);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; {24#(= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))} is VALID [2020-07-28 18:13:33,870 INFO L280 TraceCheckUtils]: 3: Hoare triple {24#(= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))} assume 0bv32 == __VERIFIER_assert_~cond; {13#false} is VALID [2020-07-28 18:13:33,870 INFO L280 TraceCheckUtils]: 4: Hoare triple {13#false} assume !false; {13#false} is VALID [2020-07-28 18:13:33,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 18:13:33,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-28 18:13:33,921 INFO L280 TraceCheckUtils]: 4: Hoare triple {13#false} assume !false; {13#false} is VALID [2020-07-28 18:13:33,922 INFO L280 TraceCheckUtils]: 3: Hoare triple {34#(not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)))} assume 0bv32 == __VERIFIER_assert_~cond; {13#false} is VALID [2020-07-28 18:13:33,926 INFO L280 TraceCheckUtils]: 2: Hoare triple {17#(= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~x~0)} __VERIFIER_assert_#in~cond := (if main_~x~0 == main_~y~0 then 1bv32 else 0bv32);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; {34#(not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)))} is VALID [2020-07-28 18:13:33,933 INFO L280 TraceCheckUtils]: 1: Hoare triple {17#(= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~x~0)} assume !~bvult32(main_~x~0, 1024bv32); {17#(= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~x~0)} is VALID [2020-07-28 18:13:33,935 INFO L280 TraceCheckUtils]: 0: Hoare triple {12#true} havoc main_#res;havoc main_#t~nondet0, main_#t~post1, main_#t~post2, main_~x~0, main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_~x~0; {17#(= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~x~0)} is VALID [2020-07-28 18:13:33,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 18:13:33,937 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [506311808] [2020-07-28 18:13:33,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-07-28 18:13:33,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-07-28 18:13:33,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310920936] [2020-07-28 18:13:33,944 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2020-07-28 18:13:33,946 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 18:13:33,949 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states. [2020-07-28 18:13:33,975 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 7 edges. 7 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 18:13:33,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-28 18:13:33,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-07-28 18:13:33,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-28 18:13:33,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-28 18:13:33,988 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 5 states. [2020-07-28 18:13:34,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 18:13:34,101 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2020-07-28 18:13:34,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-28 18:13:34,101 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2020-07-28 18:13:34,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 18:13:34,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-28 18:13:34,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2020-07-28 18:13:34,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-28 18:13:34,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2020-07-28 18:13:34,112 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states and 16 transitions. [2020-07-28 18:13:34,145 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 16 edges. 16 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 18:13:34,152 INFO L225 Difference]: With dead ends: 14 [2020-07-28 18:13:34,153 INFO L226 Difference]: Without dead ends: 0 [2020-07-28 18:13:34,156 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-07-28 18:13:34,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-28 18:13:34,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-28 18:13:34,180 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 18:13:34,181 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2020-07-28 18:13:34,182 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-28 18:13:34,182 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-28 18:13:34,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 18:13:34,183 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-28 18:13:34,183 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 18:13:34,183 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 18:13:34,184 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 18:13:34,184 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-28 18:13:34,184 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-28 18:13:34,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 18:13:34,184 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-28 18:13:34,185 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 18:13:34,185 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 18:13:34,185 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 18:13:34,185 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 18:13:34,186 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 18:13:34,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-28 18:13:34,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-28 18:13:34,188 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2020-07-28 18:13:34,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 18:13:34,188 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-28 18:13:34,188 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-28 18:13:34,189 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 18:13:34,189 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 18:13:34,400 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-07-28 18:13:34,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-28 18:13:34,465 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-28 18:13:34,466 INFO L264 CegarLoopResult]: At program point L15-2(lines 15 18) the Hoare annotation is: (= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~x~0) [2020-07-28 18:13:34,466 INFO L268 CegarLoopResult]: For program point L15-3(lines 15 18) no Hoare annotation was computed. [2020-07-28 18:13:34,466 INFO L268 CegarLoopResult]: For program point L5(lines 5 7) no Hoare annotation was computed. [2020-07-28 18:13:34,466 INFO L264 CegarLoopResult]: At program point L5-2(lines 1 21) the Hoare annotation is: (and (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)) (= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~x~0)) [2020-07-28 18:13:34,466 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-28 18:13:34,467 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-28 18:13:34,467 INFO L268 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2020-07-28 18:13:34,467 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-07-28 18:13:34,471 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-28 18:13:34,472 WARN L170 areAnnotationChecker]: L15-3 has no Hoare annotation [2020-07-28 18:13:34,472 WARN L170 areAnnotationChecker]: L15-3 has no Hoare annotation [2020-07-28 18:13:34,479 WARN L170 areAnnotationChecker]: L15-3 has no Hoare annotation [2020-07-28 18:13:34,480 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-28 18:13:34,480 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-28 18:13:34,481 WARN L170 areAnnotationChecker]: L6 has no Hoare annotation [2020-07-28 18:13:34,481 WARN L170 areAnnotationChecker]: L6 has no Hoare annotation [2020-07-28 18:13:34,481 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 18:13:34,482 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 18:13:34,482 INFO L163 areAnnotationChecker]: CFG has 1 edges. 1 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-28 18:13:34,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 06:13:34 BoogieIcfgContainer [2020-07-28 18:13:34,503 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 18:13:34,503 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 18:13:34,503 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 18:13:34,504 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 18:13:34,514 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 06:13:33" (3/4) ... [2020-07-28 18:13:34,521 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-07-28 18:13:34,536 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-07-28 18:13:34,536 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-07-28 18:13:34,572 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-07-28 18:13:34,573 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 18:13:34,576 INFO L168 Benchmark]: Toolchain (without parser) took 1723.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 957.6 MB in the beginning and 1.1 GB in the end (delta: -102.8 MB). Peak memory consumption was 39.8 MB. Max. memory is 11.5 GB. [2020-07-28 18:13:34,576 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 18:13:34,577 INFO L168 Benchmark]: CACSL2BoogieTranslator took 302.40 ms. Allocated memory is still 1.0 GB. Free memory was 957.6 MB in the beginning and 946.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-28 18:13:34,578 INFO L168 Benchmark]: Boogie Procedure Inliner took 119.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 946.8 MB in the beginning and 1.1 GB in the end (delta: -192.0 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2020-07-28 18:13:34,579 INFO L168 Benchmark]: Boogie Preprocessor took 28.66 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2020-07-28 18:13:34,579 INFO L168 Benchmark]: RCFGBuilder took 288.95 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: 18.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2020-07-28 18:13:34,580 INFO L168 Benchmark]: TraceAbstraction took 906.25 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: 53.4 MB). Peak memory consumption was 53.4 MB. Max. memory is 11.5 GB. [2020-07-28 18:13:34,581 INFO L168 Benchmark]: Witness Printer took 69.63 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. [2020-07-28 18:13:34,585 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 302.40 ms. Allocated memory is still 1.0 GB. Free memory was 957.6 MB in the beginning and 946.8 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 119.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 946.8 MB in the beginning and 1.1 GB in the end (delta: -192.0 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 28.66 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 288.95 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: 18.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 906.25 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: 53.4 MB). Peak memory consumption was 53.4 MB. Max. memory is 11.5 GB. * Witness Printer took 69.63 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. * 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: y == x - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: ~bvadd64(cond, 4294967295bv32) == 0bv32 && y == x - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3 SDtfs, 10 SDslu, 1 SDs, 0 SdLazy, 6 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 3 NumberOfFragments, 12 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 92 SizeOfPredicates, 4 NumberOfNonLiveVariables, 9 ConjunctsInSsa, 4 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, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...