./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-invariants/const.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-invariants/const.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 243aabcd2dba446bff3e5c5a4012e6e80ddc3b51 .............................................................................................................................................................................................................................................. 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-invariants/const.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 243aabcd2dba446bff3e5c5a4012e6e80ddc3b51 .......................................................................................................................................................................................................................................................................................................................................................................................................................... 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 18:24:57,194 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 18:24:57,196 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 18:24:57,215 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 18:24:57,216 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 18:24:57,218 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 18:24:57,220 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 18:24:57,233 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 18:24:57,235 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 18:24:57,237 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 18:24:57,239 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 18:24:57,240 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 18:24:57,240 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 18:24:57,241 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 18:24:57,242 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 18:24:57,243 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 18:24:57,244 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 18:24:57,245 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 18:24:57,247 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 18:24:57,249 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 18:24:57,250 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 18:24:57,251 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 18:24:57,252 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 18:24:57,253 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 18:24:57,256 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 18:24:57,256 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 18:24:57,256 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 18:24:57,257 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 18:24:57,258 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 18:24:57,259 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 18:24:57,259 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 18:24:57,260 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 18:24:57,261 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 18:24:57,262 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 18:24:57,263 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 18:24:57,263 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 18:24:57,264 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 18:24:57,264 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 18:24:57,264 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 18:24:57,265 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 18:24:57,266 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 18:24:57,267 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-28 18:24:57,281 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 18:24:57,282 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 18:24:57,283 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 18:24:57,283 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 18:24:57,284 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 18:24:57,284 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 18:24:57,284 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 18:24:57,285 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-28 18:24:57,285 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 18:24:57,285 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 18:24:57,285 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 18:24:57,286 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 18:24:57,286 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 18:24:57,286 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 18:24:57,287 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 18:24:57,287 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 18:24:57,287 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 18:24:57,288 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 18:24:57,288 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 18:24:57,288 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 18:24:57,288 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 18:24:57,289 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 18:24:57,289 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 18:24:57,289 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 18:24:57,290 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 18:24:57,290 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-28 18:24:57,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-28 18:24:57,291 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 18:24:57,291 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 18:24:57,291 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 -> 243aabcd2dba446bff3e5c5a4012e6e80ddc3b51 [2020-07-28 18:24:57,584 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 18:24:57,597 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 18:24:57,601 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 18:24:57,602 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 18:24:57,603 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 18:24:57,604 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invariants/const.c [2020-07-28 18:24:57,658 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/672c37b8f/1fe964e9edf54710a8ee06944182db1f/FLAG86b8ada88 [2020-07-28 18:24:58,073 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 18:24:58,074 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invariants/const.c [2020-07-28 18:24:58,080 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/672c37b8f/1fe964e9edf54710a8ee06944182db1f/FLAG86b8ada88 [2020-07-28 18:24:58,434 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/672c37b8f/1fe964e9edf54710a8ee06944182db1f [2020-07-28 18:24:58,438 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 18:24:58,441 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 18:24:58,443 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 18:24:58,443 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 18:24:58,446 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 18:24:58,448 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 06:24:58" (1/1) ... [2020-07-28 18:24:58,451 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e8b784 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:24:58, skipping insertion in model container [2020-07-28 18:24:58,451 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 06:24:58" (1/1) ... [2020-07-28 18:24:58,459 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 18:24:58,482 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 18:24:58,656 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 18:24:58,661 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 18:24:58,678 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 18:24:58,693 INFO L208 MainTranslator]: Completed translation [2020-07-28 18:24:58,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:24:58 WrapperNode [2020-07-28 18:24:58,694 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 18:24:58,695 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 18:24:58,695 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 18:24:58,696 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 18:24:58,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:24:58" (1/1) ... [2020-07-28 18:24:58,710 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:24:58" (1/1) ... [2020-07-28 18:24:58,732 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 18:24:58,732 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 18:24:58,733 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 18:24:58,733 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 18:24:58,797 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:24:58" (1/1) ... [2020-07-28 18:24:58,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:24:58" (1/1) ... [2020-07-28 18:24:58,798 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:24:58" (1/1) ... [2020-07-28 18:24:58,799 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:24:58" (1/1) ... [2020-07-28 18:24:58,802 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:24:58" (1/1) ... [2020-07-28 18:24:58,807 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:24:58" (1/1) ... [2020-07-28 18:24:58,808 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:24:58" (1/1) ... [2020-07-28 18:24:58,809 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 18:24:58,810 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 18:24:58,810 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 18:24:58,810 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 18:24:58,811 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:24:58" (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 18:24:58,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 18:24:58,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 18:24:59,109 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 18:24:59,110 INFO L295 CfgBuilder]: Removed 7 assume(true) statements. [2020-07-28 18:24:59,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 06:24:59 BoogieIcfgContainer [2020-07-28 18:24:59,114 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 18:24:59,115 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 18:24:59,115 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 18:24:59,119 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 18:24:59,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 06:24:58" (1/3) ... [2020-07-28 18:24:59,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7559b70e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 06:24:59, skipping insertion in model container [2020-07-28 18:24:59,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:24:58" (2/3) ... [2020-07-28 18:24:59,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7559b70e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 06:24:59, skipping insertion in model container [2020-07-28 18:24:59,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 06:24:59" (3/3) ... [2020-07-28 18:24:59,124 INFO L109 eAbstractionObserver]: Analyzing ICFG const.c [2020-07-28 18:24:59,136 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 18:24:59,143 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 18:24:59,159 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 18:24:59,184 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 18:24:59,185 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 18:24:59,185 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 18:24:59,185 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 18:24:59,185 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 18:24:59,186 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 18:24:59,186 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 18:24:59,186 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 18:24:59,202 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-07-28 18:24:59,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-07-28 18:24:59,208 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 18:24:59,209 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-07-28 18:24:59,210 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 18:24:59,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 18:24:59,216 INFO L82 PathProgramCache]: Analyzing trace with hash 925774290, now seen corresponding path program 1 times [2020-07-28 18:24:59,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 18:24:59,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828097140] [2020-07-28 18:24:59,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 18:24:59,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 18:24:59,350 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-28 18:24:59,351 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 18:24:59,367 INFO L168 Benchmark]: Toolchain (without parser) took 924.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 960.2 MB in the beginning and 1.1 GB in the end (delta: -142.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 18:24:59,368 INFO L168 Benchmark]: CDTParser took 0.33 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 18:24:59,371 INFO L168 Benchmark]: CACSL2BoogieTranslator took 252.21 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-28 18:24:59,373 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.92 ms. Allocated memory is still 1.0 GB. Free memory is still 949.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 18:24:59,375 INFO L168 Benchmark]: Boogie Preprocessor took 77.16 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 949.5 MB in the beginning and 1.1 GB in the end (delta: -179.4 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2020-07-28 18:24:59,377 INFO L168 Benchmark]: RCFGBuilder took 304.07 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: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. [2020-07-28 18:24:59,378 INFO L168 Benchmark]: TraceAbstraction took 245.97 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: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 11.5 GB. [2020-07-28 18:24:59,385 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 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 252.21 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.5 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 36.92 ms. Allocated memory is still 1.0 GB. Free memory is still 949.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 77.16 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 949.5 MB in the beginning and 1.1 GB in the end (delta: -179.4 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 304.07 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: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 245.97 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: 13.2 MB). Peak memory consumption was 13.2 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 18:25:01,285 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 18:25:01,288 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 18:25:01,306 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 18:25:01,307 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 18:25:01,309 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 18:25:01,311 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 18:25:01,322 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 18:25:01,327 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 18:25:01,329 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 18:25:01,331 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 18:25:01,333 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 18:25:01,333 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 18:25:01,336 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 18:25:01,338 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 18:25:01,339 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 18:25:01,341 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 18:25:01,342 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 18:25:01,345 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 18:25:01,349 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 18:25:01,353 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 18:25:01,357 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 18:25:01,359 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 18:25:01,360 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 18:25:01,362 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 18:25:01,363 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 18:25:01,363 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 18:25:01,365 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 18:25:01,365 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 18:25:01,366 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 18:25:01,366 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 18:25:01,368 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 18:25:01,368 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 18:25:01,369 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 18:25:01,371 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 18:25:01,371 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 18:25:01,372 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 18:25:01,372 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 18:25:01,372 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 18:25:01,373 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 18:25:01,375 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 18:25:01,376 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-07-28 18:25:01,413 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 18:25:01,414 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 18:25:01,415 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 18:25:01,415 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 18:25:01,415 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 18:25:01,416 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 18:25:01,416 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 18:25:01,416 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 18:25:01,416 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 18:25:01,417 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 18:25:01,417 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 18:25:01,417 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 18:25:01,418 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-07-28 18:25:01,418 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-07-28 18:25:01,418 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 18:25:01,418 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 18:25:01,419 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 18:25:01,419 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 18:25:01,419 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 18:25:01,420 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 18:25:01,420 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 18:25:01,420 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 18:25:01,420 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 18:25:01,421 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 18:25:01,421 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 18:25:01,421 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 18:25:01,422 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-07-28 18:25:01,422 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-07-28 18:25:01,422 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 18:25:01,422 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 18:25:01,423 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-28 18:25:01,423 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 -> 243aabcd2dba446bff3e5c5a4012e6e80ddc3b51 [2020-07-28 18:25:01,721 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 18:25:01,740 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 18:25:01,745 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 18:25:01,746 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 18:25:01,749 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 18:25:01,749 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invariants/const.c [2020-07-28 18:25:01,814 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/972db8485/85f8e55f048740dd89567b980a3eff2e/FLAGae03d2397 [2020-07-28 18:25:02,247 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 18:25:02,248 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invariants/const.c [2020-07-28 18:25:02,254 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/972db8485/85f8e55f048740dd89567b980a3eff2e/FLAGae03d2397 [2020-07-28 18:25:02,674 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/972db8485/85f8e55f048740dd89567b980a3eff2e [2020-07-28 18:25:02,677 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 18:25:02,680 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 18:25:02,685 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 18:25:02,685 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 18:25:02,688 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 18:25:02,690 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 06:25:02" (1/1) ... [2020-07-28 18:25:02,693 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 06:25:02, skipping insertion in model container [2020-07-28 18:25:02,693 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 06:25:02" (1/1) ... [2020-07-28 18:25:02,701 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 18:25:02,719 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 18:25:02,947 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 18:25:02,955 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 18:25:02,978 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 18:25:02,993 INFO L208 MainTranslator]: Completed translation [2020-07-28 18:25:02,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:25:02 WrapperNode [2020-07-28 18:25:02,994 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 18:25:02,994 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 18:25:02,995 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 18:25:02,995 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 18:25:03,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:25:02" (1/1) ... [2020-07-28 18:25:03,009 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:25:02" (1/1) ... [2020-07-28 18:25:03,090 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 18:25:03,090 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 18:25:03,090 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 18:25:03,091 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 18:25:03,098 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:25:02" (1/1) ... [2020-07-28 18:25:03,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:25:02" (1/1) ... [2020-07-28 18:25:03,099 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:25:02" (1/1) ... [2020-07-28 18:25:03,099 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:25:02" (1/1) ... [2020-07-28 18:25:03,103 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:25:02" (1/1) ... [2020-07-28 18:25:03,111 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:25:02" (1/1) ... [2020-07-28 18:25:03,112 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:25:02" (1/1) ... [2020-07-28 18:25:03,114 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 18:25:03,115 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 18:25:03,115 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 18:25:03,116 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 18:25:03,118 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:25:02" (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 18:25:03,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 18:25:03,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 18:25:03,358 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 18:25:03,358 INFO L295 CfgBuilder]: Removed 7 assume(true) statements. [2020-07-28 18:25:03,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 06:25:03 BoogieIcfgContainer [2020-07-28 18:25:03,363 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 18:25:03,364 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 18:25:03,364 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 18:25:03,368 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 18:25:03,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 06:25:02" (1/3) ... [2020-07-28 18:25:03,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b12c692 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 06:25:03, skipping insertion in model container [2020-07-28 18:25:03,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:25:02" (2/3) ... [2020-07-28 18:25:03,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b12c692 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 06:25:03, skipping insertion in model container [2020-07-28 18:25:03,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 06:25:03" (3/3) ... [2020-07-28 18:25:03,373 INFO L109 eAbstractionObserver]: Analyzing ICFG const.c [2020-07-28 18:25:03,387 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 18:25:03,395 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 18:25:03,415 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 18:25:03,443 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 18:25:03,443 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 18:25:03,444 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 18:25:03,444 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 18:25:03,444 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 18:25:03,444 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 18:25:03,445 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 18:25:03,445 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 18:25:03,460 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-07-28 18:25:03,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-07-28 18:25:03,467 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 18:25:03,468 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-07-28 18:25:03,469 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 18:25:03,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 18:25:03,476 INFO L82 PathProgramCache]: Analyzing trace with hash 925774290, now seen corresponding path program 1 times [2020-07-28 18:25:03,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-07-28 18:25:03,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2135413792] [2020-07-28 18:25:03,491 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 18:25:03,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 18:25:03,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-28 18:25:03,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 18:25:03,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-28 18:25:03,607 INFO L280 TraceCheckUtils]: 0: Hoare triple {14#true} havoc main_#res;havoc main_#t~pre1, main_#t~nondet2, main_#t~nondet0, main_~s~0;main_~s~0 := 0bv32; {19#(= (_ bv0 32) ULTIMATE.start_main_~s~0)} is VALID [2020-07-28 18:25:03,609 INFO L280 TraceCheckUtils]: 1: Hoare triple {19#(= (_ bv0 32) ULTIMATE.start_main_~s~0)} assume !!(0bv32 != main_#t~nondet0);havoc main_#t~nondet0; {19#(= (_ bv0 32) ULTIMATE.start_main_~s~0)} is VALID [2020-07-28 18:25:03,611 INFO L280 TraceCheckUtils]: 2: Hoare triple {19#(= (_ bv0 32) ULTIMATE.start_main_~s~0)} assume 0bv32 != main_~s~0;main_#t~pre1 := ~bvadd32(1bv32, main_~s~0);main_~s~0 := ~bvadd32(1bv32, main_~s~0);havoc main_#t~pre1; {15#false} is VALID [2020-07-28 18:25:03,611 INFO L280 TraceCheckUtils]: 3: Hoare triple {15#false} assume 0bv32 != main_#t~nondet2;havoc main_#t~nondet2;__VERIFIER_assert_#in~cond := (if 0bv32 == main_~s~0 then 1bv32 else 0bv32);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; {15#false} is VALID [2020-07-28 18:25:03,612 INFO L280 TraceCheckUtils]: 4: Hoare triple {15#false} assume 0bv32 == __VERIFIER_assert_~cond; {15#false} is VALID [2020-07-28 18:25:03,612 INFO L280 TraceCheckUtils]: 5: Hoare triple {15#false} assume !false; {15#false} is VALID [2020-07-28 18:25:03,617 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 18:25:03,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-28 18:25:03,628 INFO L280 TraceCheckUtils]: 5: Hoare triple {15#false} assume !false; {15#false} is VALID [2020-07-28 18:25:03,629 INFO L280 TraceCheckUtils]: 4: Hoare triple {15#false} assume 0bv32 == __VERIFIER_assert_~cond; {15#false} is VALID [2020-07-28 18:25:03,629 INFO L280 TraceCheckUtils]: 3: Hoare triple {15#false} assume 0bv32 != main_#t~nondet2;havoc main_#t~nondet2;__VERIFIER_assert_#in~cond := (if 0bv32 == main_~s~0 then 1bv32 else 0bv32);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; {15#false} is VALID [2020-07-28 18:25:03,630 INFO L280 TraceCheckUtils]: 2: Hoare triple {19#(= (_ bv0 32) ULTIMATE.start_main_~s~0)} assume 0bv32 != main_~s~0;main_#t~pre1 := ~bvadd32(1bv32, main_~s~0);main_~s~0 := ~bvadd32(1bv32, main_~s~0);havoc main_#t~pre1; {15#false} is VALID [2020-07-28 18:25:03,631 INFO L280 TraceCheckUtils]: 1: Hoare triple {19#(= (_ bv0 32) ULTIMATE.start_main_~s~0)} assume !!(0bv32 != main_#t~nondet0);havoc main_#t~nondet0; {19#(= (_ bv0 32) ULTIMATE.start_main_~s~0)} is VALID [2020-07-28 18:25:03,632 INFO L280 TraceCheckUtils]: 0: Hoare triple {14#true} havoc main_#res;havoc main_#t~pre1, main_#t~nondet2, main_#t~nondet0, main_~s~0;main_~s~0 := 0bv32; {19#(= (_ bv0 32) ULTIMATE.start_main_~s~0)} is VALID [2020-07-28 18:25:03,633 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 18:25:03,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2135413792] [2020-07-28 18:25:03,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-07-28 18:25:03,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-07-28 18:25:03,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110966844] [2020-07-28 18:25:03,642 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-07-28 18:25:03,644 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 18:25:03,647 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states. [2020-07-28 18:25:03,662 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 6 edges. 6 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 18:25:03,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-28 18:25:03,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-07-28 18:25:03,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-28 18:25:03,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-28 18:25:03,673 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 3 states. [2020-07-28 18:25:03,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 18:25:03,735 INFO L93 Difference]: Finished difference Result 21 states and 29 transitions. [2020-07-28 18:25:03,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-28 18:25:03,736 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-07-28 18:25:03,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 18:25:03,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-28 18:25:03,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 29 transitions. [2020-07-28 18:25:03,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-28 18:25:03,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 29 transitions. [2020-07-28 18:25:03,745 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 29 transitions. [2020-07-28 18:25:03,813 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 29 edges. 29 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 18:25:03,823 INFO L225 Difference]: With dead ends: 21 [2020-07-28 18:25:03,823 INFO L226 Difference]: Without dead ends: 7 [2020-07-28 18:25:03,827 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-28 18:25:03,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2020-07-28 18:25:03,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2020-07-28 18:25:03,851 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 18:25:03,852 INFO L82 GeneralOperation]: Start isEquivalent. First operand 7 states. Second operand 7 states. [2020-07-28 18:25:03,852 INFO L74 IsIncluded]: Start isIncluded. First operand 7 states. Second operand 7 states. [2020-07-28 18:25:03,853 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 7 states. [2020-07-28 18:25:03,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 18:25:03,854 INFO L93 Difference]: Finished difference Result 7 states and 8 transitions. [2020-07-28 18:25:03,855 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 8 transitions. [2020-07-28 18:25:03,855 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 18:25:03,855 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 18:25:03,856 INFO L74 IsIncluded]: Start isIncluded. First operand 7 states. Second operand 7 states. [2020-07-28 18:25:03,856 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 7 states. [2020-07-28 18:25:03,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 18:25:03,857 INFO L93 Difference]: Finished difference Result 7 states and 8 transitions. [2020-07-28 18:25:03,857 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 8 transitions. [2020-07-28 18:25:03,858 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 18:25:03,858 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 18:25:03,859 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 18:25:03,859 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 18:25:03,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-28 18:25:03,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2020-07-28 18:25:03,862 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 8 transitions. Word has length 6 [2020-07-28 18:25:03,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 18:25:03,862 INFO L479 AbstractCegarLoop]: Abstraction has 7 states and 8 transitions. [2020-07-28 18:25:03,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-28 18:25:03,863 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 8 transitions. [2020-07-28 18:25:03,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-07-28 18:25:03,864 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 18:25:03,864 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-07-28 18:25:04,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-07-28 18:25:04,075 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 18:25:04,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 18:25:04,076 INFO L82 PathProgramCache]: Analyzing trace with hash 925833872, now seen corresponding path program 1 times [2020-07-28 18:25:04,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-07-28 18:25:04,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [894764523] [2020-07-28 18:25:04,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-07-28 18:25:04,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 18:25:04,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-28 18:25:04,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 18:25:04,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-28 18:25:04,170 INFO L280 TraceCheckUtils]: 0: Hoare triple {96#true} havoc main_#res;havoc main_#t~pre1, main_#t~nondet2, main_#t~nondet0, main_~s~0;main_~s~0 := 0bv32; {101#(= (_ bv0 32) ULTIMATE.start_main_~s~0)} is VALID [2020-07-28 18:25:04,172 INFO L280 TraceCheckUtils]: 1: Hoare triple {101#(= (_ bv0 32) ULTIMATE.start_main_~s~0)} assume !!(0bv32 != main_#t~nondet0);havoc main_#t~nondet0; {101#(= (_ bv0 32) ULTIMATE.start_main_~s~0)} is VALID [2020-07-28 18:25:04,173 INFO L280 TraceCheckUtils]: 2: Hoare triple {101#(= (_ bv0 32) ULTIMATE.start_main_~s~0)} assume !(0bv32 != main_~s~0); {101#(= (_ bv0 32) ULTIMATE.start_main_~s~0)} is VALID [2020-07-28 18:25:04,174 INFO L280 TraceCheckUtils]: 3: Hoare triple {101#(= (_ bv0 32) ULTIMATE.start_main_~s~0)} assume 0bv32 != main_#t~nondet2;havoc main_#t~nondet2;__VERIFIER_assert_#in~cond := (if 0bv32 == main_~s~0 then 1bv32 else 0bv32);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; {111#(= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))} is VALID [2020-07-28 18:25:04,175 INFO L280 TraceCheckUtils]: 4: Hoare triple {111#(= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))} assume 0bv32 == __VERIFIER_assert_~cond; {97#false} is VALID [2020-07-28 18:25:04,175 INFO L280 TraceCheckUtils]: 5: Hoare triple {97#false} assume !false; {97#false} is VALID [2020-07-28 18:25:04,176 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 18:25:04,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-28 18:25:04,219 INFO L280 TraceCheckUtils]: 5: Hoare triple {97#false} assume !false; {97#false} is VALID [2020-07-28 18:25:04,220 INFO L280 TraceCheckUtils]: 4: Hoare triple {121#(not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)))} assume 0bv32 == __VERIFIER_assert_~cond; {97#false} is VALID [2020-07-28 18:25:04,221 INFO L280 TraceCheckUtils]: 3: Hoare triple {101#(= (_ bv0 32) ULTIMATE.start_main_~s~0)} assume 0bv32 != main_#t~nondet2;havoc main_#t~nondet2;__VERIFIER_assert_#in~cond := (if 0bv32 == main_~s~0 then 1bv32 else 0bv32);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; {121#(not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)))} is VALID [2020-07-28 18:25:04,222 INFO L280 TraceCheckUtils]: 2: Hoare triple {101#(= (_ bv0 32) ULTIMATE.start_main_~s~0)} assume !(0bv32 != main_~s~0); {101#(= (_ bv0 32) ULTIMATE.start_main_~s~0)} is VALID [2020-07-28 18:25:04,223 INFO L280 TraceCheckUtils]: 1: Hoare triple {101#(= (_ bv0 32) ULTIMATE.start_main_~s~0)} assume !!(0bv32 != main_#t~nondet0);havoc main_#t~nondet0; {101#(= (_ bv0 32) ULTIMATE.start_main_~s~0)} is VALID [2020-07-28 18:25:04,224 INFO L280 TraceCheckUtils]: 0: Hoare triple {96#true} havoc main_#res;havoc main_#t~pre1, main_#t~nondet2, main_#t~nondet0, main_~s~0;main_~s~0 := 0bv32; {101#(= (_ bv0 32) ULTIMATE.start_main_~s~0)} is VALID [2020-07-28 18:25:04,225 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 18:25:04,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [894764523] [2020-07-28 18:25:04,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-07-28 18:25:04,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-07-28 18:25:04,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047402677] [2020-07-28 18:25:04,228 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2020-07-28 18:25:04,228 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 18:25:04,228 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states. [2020-07-28 18:25:04,240 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 8 edges. 8 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 18:25:04,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-28 18:25:04,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-07-28 18:25:04,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-28 18:25:04,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-28 18:25:04,241 INFO L87 Difference]: Start difference. First operand 7 states and 8 transitions. Second operand 5 states. [2020-07-28 18:25:04,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 18:25:04,294 INFO L93 Difference]: Finished difference Result 10 states and 12 transitions. [2020-07-28 18:25:04,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-28 18:25:04,294 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2020-07-28 18:25:04,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 18:25:04,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-28 18:25:04,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2020-07-28 18:25:04,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-28 18:25:04,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2020-07-28 18:25:04,298 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states and 12 transitions. [2020-07-28 18:25:04,318 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 18:25:04,318 INFO L225 Difference]: With dead ends: 10 [2020-07-28 18:25:04,318 INFO L226 Difference]: Without dead ends: 0 [2020-07-28 18:25:04,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 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 18:25:04,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-28 18:25:04,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-28 18:25:04,321 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 18:25:04,321 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2020-07-28 18:25:04,321 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-28 18:25:04,321 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-28 18:25:04,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 18:25:04,321 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-28 18:25:04,322 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 18:25:04,322 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 18:25:04,322 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 18:25:04,322 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-28 18:25:04,323 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-28 18:25:04,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 18:25:04,323 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-28 18:25:04,323 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 18:25:04,323 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 18:25:04,324 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 18:25:04,324 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 18:25:04,324 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 18:25:04,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-28 18:25:04,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-28 18:25:04,324 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2020-07-28 18:25:04,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 18:25:04,325 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-28 18:25:04,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-28 18:25:04,325 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 18:25:04,326 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 18:25:04,534 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-07-28 18:25:04,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-28 18:25:04,596 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-28 18:25:04,597 INFO L264 CegarLoopResult]: At program point L19(lines 9 20) the Hoare annotation is: (= (_ bv0 32) ULTIMATE.start_main_~s~0) [2020-07-28 18:25:04,597 INFO L264 CegarLoopResult]: At program point L15(lines 11 18) the Hoare annotation is: (= (_ bv0 32) ULTIMATE.start_main_~s~0) [2020-07-28 18:25:04,597 INFO L268 CegarLoopResult]: For program point L11-2(lines 11 18) no Hoare annotation was computed. [2020-07-28 18:25:04,597 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-07-28 18:25:04,597 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-28 18:25:04,597 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-28 18:25:04,598 INFO L268 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-07-28 18:25:04,598 INFO L268 CegarLoopResult]: For program point L12(lines 12 14) no Hoare annotation was computed. [2020-07-28 18:25:04,598 INFO L268 CegarLoopResult]: For program point L12-2(lines 11 18) no Hoare annotation was computed. [2020-07-28 18:25:04,599 INFO L268 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2020-07-28 18:25:04,603 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-28 18:25:04,603 WARN L170 areAnnotationChecker]: L11-2 has no Hoare annotation [2020-07-28 18:25:04,604 WARN L170 areAnnotationChecker]: L11-2 has no Hoare annotation [2020-07-28 18:25:04,604 WARN L170 areAnnotationChecker]: L12 has no Hoare annotation [2020-07-28 18:25:04,604 WARN L170 areAnnotationChecker]: L11-2 has no Hoare annotation [2020-07-28 18:25:04,604 WARN L170 areAnnotationChecker]: L12 has no Hoare annotation [2020-07-28 18:25:04,604 WARN L170 areAnnotationChecker]: L12 has no Hoare annotation [2020-07-28 18:25:04,605 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 18:25:04,605 WARN L170 areAnnotationChecker]: L12-2 has no Hoare annotation [2020-07-28 18:25:04,605 WARN L170 areAnnotationChecker]: L12-2 has no Hoare annotation [2020-07-28 18:25:04,605 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 18:25:04,606 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-28 18:25:04,606 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-28 18:25:04,606 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-28 18:25:04,606 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-28 18:25:04,607 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-28 18:25:04,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 06:25:04 BoogieIcfgContainer [2020-07-28 18:25:04,616 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 18:25:04,616 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 18:25:04,616 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 18:25:04,617 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 18:25:04,618 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 06:25:03" (3/4) ... [2020-07-28 18:25:04,621 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-07-28 18:25:04,632 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-07-28 18:25:04,632 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-07-28 18:25:04,678 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-07-28 18:25:04,678 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 18:25:04,681 INFO L168 Benchmark]: Toolchain (without parser) took 2002.04 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 957.5 MB in the beginning and 1.0 GB in the end (delta: -65.2 MB). Peak memory consumption was 63.3 MB. Max. memory is 11.5 GB. [2020-07-28 18:25:04,682 INFO L168 Benchmark]: CDTParser took 0.24 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 18:25:04,683 INFO L168 Benchmark]: CACSL2BoogieTranslator took 309.34 ms. Allocated memory is still 1.0 GB. Free memory was 957.5 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 18:25:04,684 INFO L168 Benchmark]: Boogie Procedure Inliner took 95.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 946.8 MB in the beginning and 1.1 GB in the end (delta: -176.5 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2020-07-28 18:25:04,685 INFO L168 Benchmark]: Boogie Preprocessor took 24.40 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2020-07-28 18:25:04,686 INFO L168 Benchmark]: RCFGBuilder took 247.89 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: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 11.5 GB. [2020-07-28 18:25:04,686 INFO L168 Benchmark]: TraceAbstraction took 1251.66 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 76.3 MB). Peak memory consumption was 76.3 MB. Max. memory is 11.5 GB. [2020-07-28 18:25:04,687 INFO L168 Benchmark]: Witness Printer took 61.97 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2020-07-28 18:25:04,691 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 0.24 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 309.34 ms. Allocated memory is still 1.0 GB. Free memory was 957.5 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 95.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 946.8 MB in the beginning and 1.1 GB in the end (delta: -176.5 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.40 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 247.89 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: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1251.66 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 76.3 MB). Peak memory consumption was 76.3 MB. Max. memory is 11.5 GB. * Witness Printer took 61.97 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 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: 11]: Loop Invariant Derived loop invariant: 0bv32 == s - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: 0bv32 == s - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 15 SDtfs, 21 SDslu, 3 SDs, 0 SdLazy, 8 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s 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, 2 LocationsWithAnnotation, 2 PreInvPairs, 5 NumberOfFragments, 6 HoareAnnotationTreeSize, 2 FomulaSimplifications, 10 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 235 SizeOfPredicates, 3 NumberOfNonLiveVariables, 21 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...