./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -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/bitvector/s3_clnt_3.BV.c.cil-2a.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(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f963e087de2c8fcbc7f626f7e7b1f1088f7756c7 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 -Xmx15G -Xms4m -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/bitvector/s3_clnt_3.BV.c.cil-2a.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(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f963e087de2c8fcbc7f626f7e7b1f1088f7756c7 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-19 22:21:27,235 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 22:21:27,238 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 22:21:27,268 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 22:21:27,269 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 22:21:27,270 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 22:21:27,272 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 22:21:27,274 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 22:21:27,276 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 22:21:27,277 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 22:21:27,278 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 22:21:27,279 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 22:21:27,280 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 22:21:27,281 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 22:21:27,282 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 22:21:27,283 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 22:21:27,284 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 22:21:27,285 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 22:21:27,287 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 22:21:27,291 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 22:21:27,293 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 22:21:27,294 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 22:21:27,295 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 22:21:27,296 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 22:21:27,299 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 22:21:27,299 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 22:21:27,309 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 22:21:27,310 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 22:21:27,311 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 22:21:27,312 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 22:21:27,312 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 22:21:27,313 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 22:21:27,314 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 22:21:27,315 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 22:21:27,316 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 22:21:27,316 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 22:21:27,317 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 22:21:27,317 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 22:21:27,317 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 22:21:27,318 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 22:21:27,319 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 22:21:27,320 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-19 22:21:27,343 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 22:21:27,344 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 22:21:27,345 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 22:21:27,345 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 22:21:27,346 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 22:21:27,346 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 22:21:27,346 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 22:21:27,346 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 22:21:27,347 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 22:21:27,347 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 22:21:27,347 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-19 22:21:27,347 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 22:21:27,348 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-19 22:21:27,348 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 22:21:27,348 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 22:21:27,348 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 22:21:27,349 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-19 22:21:27,349 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 22:21:27,349 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 22:21:27,349 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 22:21:27,350 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 22:21:27,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 22:21:27,350 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 22:21:27,351 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 22:21:27,351 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-19 22:21:27,351 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 22:21:27,351 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 22:21:27,352 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-19 22:21:27,352 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 22:21:27,352 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(reach_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 -> f963e087de2c8fcbc7f626f7e7b1f1088f7756c7 [2020-10-19 22:21:27,630 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 22:21:27,644 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 22:21:27,650 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 22:21:27,651 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 22:21:27,652 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 22:21:27,653 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c [2020-10-19 22:21:27,726 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e83fa43ed/26c59b91e32c4b02ad4e41e15c2f7a36/FLAG1c6501091 [2020-10-19 22:21:28,349 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 22:21:28,349 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c [2020-10-19 22:21:28,362 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e83fa43ed/26c59b91e32c4b02ad4e41e15c2f7a36/FLAG1c6501091 [2020-10-19 22:21:28,674 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e83fa43ed/26c59b91e32c4b02ad4e41e15c2f7a36 [2020-10-19 22:21:28,678 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 22:21:28,684 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 22:21:28,686 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 22:21:28,686 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 22:21:28,690 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 22:21:28,691 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:21:28" (1/1) ... [2020-10-19 22:21:28,694 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ce3d76e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:28, skipping insertion in model container [2020-10-19 22:21:28,694 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:21:28" (1/1) ... [2020-10-19 22:21:28,702 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 22:21:28,762 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 22:21:29,232 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:21:29,245 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 22:21:29,302 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:21:29,319 INFO L208 MainTranslator]: Completed translation [2020-10-19 22:21:29,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:29 WrapperNode [2020-10-19 22:21:29,320 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 22:21:29,321 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 22:21:29,322 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 22:21:29,322 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 22:21:29,332 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:29" (1/1) ... [2020-10-19 22:21:29,346 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:29" (1/1) ... [2020-10-19 22:21:29,392 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 22:21:29,392 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 22:21:29,392 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 22:21:29,393 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 22:21:29,405 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:29" (1/1) ... [2020-10-19 22:21:29,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:29" (1/1) ... [2020-10-19 22:21:29,409 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:29" (1/1) ... [2020-10-19 22:21:29,410 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:29" (1/1) ... [2020-10-19 22:21:29,419 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:29" (1/1) ... [2020-10-19 22:21:29,427 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:29" (1/1) ... [2020-10-19 22:21:29,430 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:29" (1/1) ... [2020-10-19 22:21:29,439 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 22:21:29,440 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 22:21:29,441 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 22:21:29,441 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 22:21:29,442 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:29" (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 [2020-10-19 22:21:29,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 22:21:29,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 22:21:29,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 22:21:29,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 22:21:29,670 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-19 22:21:30,267 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-10-19 22:21:30,267 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-10-19 22:21:30,279 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 22:21:30,279 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-19 22:21:30,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:21:30 BoogieIcfgContainer [2020-10-19 22:21:30,282 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 22:21:30,283 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 22:21:30,283 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 22:21:30,287 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 22:21:30,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 10:21:28" (1/3) ... [2020-10-19 22:21:30,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1636fb44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:21:30, skipping insertion in model container [2020-10-19 22:21:30,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:29" (2/3) ... [2020-10-19 22:21:30,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1636fb44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:21:30, skipping insertion in model container [2020-10-19 22:21:30,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:21:30" (3/3) ... [2020-10-19 22:21:30,291 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt_3.BV.c.cil-2a.c [2020-10-19 22:21:30,303 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 22:21:30,311 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-19 22:21:30,326 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-19 22:21:30,353 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 22:21:30,353 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-19 22:21:30,354 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 22:21:30,354 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 22:21:30,354 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 22:21:30,354 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 22:21:30,355 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 22:21:30,355 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 22:21:30,374 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states. [2020-10-19 22:21:30,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-19 22:21:30,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:21:30,384 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:21:30,385 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:21:30,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:21:30,392 INFO L82 PathProgramCache]: Analyzing trace with hash 259999105, now seen corresponding path program 1 times [2020-10-19 22:21:30,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:21:30,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85745488] [2020-10-19 22:21:30,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:21:30,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:21:30,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:21:30,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85745488] [2020-10-19 22:21:30,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:21:30,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:21:30,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662114215] [2020-10-19 22:21:30,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:21:30,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:21:30,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:21:30,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:21:30,675 INFO L87 Difference]: Start difference. First operand 127 states. Second operand 3 states. [2020-10-19 22:21:30,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:21:30,901 INFO L93 Difference]: Finished difference Result 248 states and 424 transitions. [2020-10-19 22:21:30,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:21:30,906 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-10-19 22:21:30,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:21:30,923 INFO L225 Difference]: With dead ends: 248 [2020-10-19 22:21:30,923 INFO L226 Difference]: Without dead ends: 113 [2020-10-19 22:21:30,927 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:21:30,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-19 22:21:30,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2020-10-19 22:21:30,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-19 22:21:30,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 171 transitions. [2020-10-19 22:21:30,978 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 171 transitions. Word has length 25 [2020-10-19 22:21:30,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:21:30,979 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 171 transitions. [2020-10-19 22:21:30,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:21:30,979 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 171 transitions. [2020-10-19 22:21:30,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-19 22:21:30,981 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:21:30,981 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:21:30,982 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 22:21:30,982 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:21:30,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:21:30,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1138040513, now seen corresponding path program 1 times [2020-10-19 22:21:30,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:21:30,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901857968] [2020-10-19 22:21:30,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:21:31,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:21:31,075 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:21:31,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901857968] [2020-10-19 22:21:31,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:21:31,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:21:31,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624944256] [2020-10-19 22:21:31,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:21:31,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:21:31,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:21:31,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:21:31,080 INFO L87 Difference]: Start difference. First operand 113 states and 171 transitions. Second operand 3 states. [2020-10-19 22:21:31,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:21:31,315 INFO L93 Difference]: Finished difference Result 233 states and 356 transitions. [2020-10-19 22:21:31,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:21:31,317 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2020-10-19 22:21:31,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:21:31,321 INFO L225 Difference]: With dead ends: 233 [2020-10-19 22:21:31,321 INFO L226 Difference]: Without dead ends: 131 [2020-10-19 22:21:31,323 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:21:31,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-19 22:21:31,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 128. [2020-10-19 22:21:31,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-19 22:21:31,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 191 transitions. [2020-10-19 22:21:31,351 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 191 transitions. Word has length 37 [2020-10-19 22:21:31,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:21:31,351 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 191 transitions. [2020-10-19 22:21:31,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:21:31,352 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 191 transitions. [2020-10-19 22:21:31,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-19 22:21:31,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:21:31,355 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:21:31,355 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 22:21:31,356 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:21:31,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:21:31,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1126420040, now seen corresponding path program 1 times [2020-10-19 22:21:31,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:21:31,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321021057] [2020-10-19 22:21:31,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:21:31,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:21:31,507 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-19 22:21:31,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321021057] [2020-10-19 22:21:31,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:21:31,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:21:31,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401840604] [2020-10-19 22:21:31,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:21:31,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:21:31,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:21:31,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:21:31,510 INFO L87 Difference]: Start difference. First operand 128 states and 191 transitions. Second operand 3 states. [2020-10-19 22:21:31,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:21:31,534 INFO L93 Difference]: Finished difference Result 271 states and 400 transitions. [2020-10-19 22:21:31,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:21:31,535 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-10-19 22:21:31,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:21:31,537 INFO L225 Difference]: With dead ends: 271 [2020-10-19 22:21:31,537 INFO L226 Difference]: Without dead ends: 154 [2020-10-19 22:21:31,538 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:21:31,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-19 22:21:31,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2020-10-19 22:21:31,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-19 22:21:31,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 224 transitions. [2020-10-19 22:21:31,550 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 224 transitions. Word has length 51 [2020-10-19 22:21:31,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:21:31,551 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 224 transitions. [2020-10-19 22:21:31,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:21:31,551 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 224 transitions. [2020-10-19 22:21:31,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-19 22:21:31,553 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:21:31,553 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:21:31,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 22:21:31,554 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:21:31,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:21:31,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1260433546, now seen corresponding path program 1 times [2020-10-19 22:21:31,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:21:31,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665818933] [2020-10-19 22:21:31,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:21:31,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:21:31,646 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-19 22:21:31,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665818933] [2020-10-19 22:21:31,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:21:31,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:21:31,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572888910] [2020-10-19 22:21:31,648 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:21:31,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:21:31,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:21:31,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:21:31,649 INFO L87 Difference]: Start difference. First operand 154 states and 224 transitions. Second operand 3 states. [2020-10-19 22:21:31,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:21:31,809 INFO L93 Difference]: Finished difference Result 292 states and 435 transitions. [2020-10-19 22:21:31,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:21:31,809 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-10-19 22:21:31,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:21:31,811 INFO L225 Difference]: With dead ends: 292 [2020-10-19 22:21:31,811 INFO L226 Difference]: Without dead ends: 175 [2020-10-19 22:21:31,812 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:21:31,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-19 22:21:31,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 171. [2020-10-19 22:21:31,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-19 22:21:31,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 246 transitions. [2020-10-19 22:21:31,824 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 246 transitions. Word has length 51 [2020-10-19 22:21:31,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:21:31,827 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 246 transitions. [2020-10-19 22:21:31,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:21:31,827 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 246 transitions. [2020-10-19 22:21:31,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-19 22:21:31,831 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:21:31,831 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:21:31,831 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-19 22:21:31,832 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:21:31,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:21:31,832 INFO L82 PathProgramCache]: Analyzing trace with hash -457628469, now seen corresponding path program 1 times [2020-10-19 22:21:31,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:21:31,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178579511] [2020-10-19 22:21:31,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:21:31,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 22:21:31,889 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 22:21:31,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 22:21:31,946 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 22:21:32,033 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 22:21:32,035 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 22:21:32,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-19 22:21:32,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 10:21:32 BoogieIcfgContainer [2020-10-19 22:21:32,138 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 22:21:32,138 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 22:21:32,139 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 22:21:32,139 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 22:21:32,140 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:21:30" (3/4) ... [2020-10-19 22:21:32,143 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-19 22:21:32,144 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 22:21:32,147 INFO L168 Benchmark]: Toolchain (without parser) took 3466.62 ms. Allocated memory was 41.9 MB in the beginning and 58.7 MB in the end (delta: 16.8 MB). Free memory was 20.4 MB in the beginning and 28.3 MB in the end (delta: -7.9 MB). Peak memory consumption was 8.9 MB. Max. memory is 14.3 GB. [2020-10-19 22:21:32,147 INFO L168 Benchmark]: CDTParser took 1.08 ms. Allocated memory is still 32.0 MB. Free memory was 9.2 MB in the beginning and 9.1 MB in the end (delta: 47.7 kB). Peak memory consumption was 47.7 kB. Max. memory is 14.3 GB. [2020-10-19 22:21:32,149 INFO L168 Benchmark]: CACSL2BoogieTranslator took 635.11 ms. Allocated memory was 41.9 MB in the beginning and 42.5 MB in the end (delta: 524.3 kB). Free memory was 19.5 MB in the beginning and 15.7 MB in the end (delta: 3.8 MB). Peak memory consumption was 10.7 MB. Max. memory is 14.3 GB. [2020-10-19 22:21:32,150 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.72 ms. Allocated memory is still 42.5 MB. Free memory was 15.7 MB in the beginning and 12.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 14.3 GB. [2020-10-19 22:21:32,151 INFO L168 Benchmark]: Boogie Preprocessor took 47.35 ms. Allocated memory is still 42.5 MB. Free memory was 12.7 MB in the beginning and 10.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 14.3 GB. [2020-10-19 22:21:32,152 INFO L168 Benchmark]: RCFGBuilder took 841.82 ms. Allocated memory was 42.5 MB in the beginning and 47.7 MB in the end (delta: 5.2 MB). Free memory was 10.3 MB in the beginning and 22.2 MB in the end (delta: -11.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 14.3 GB. [2020-10-19 22:21:32,153 INFO L168 Benchmark]: TraceAbstraction took 1855.08 ms. Allocated memory was 47.7 MB in the beginning and 58.7 MB in the end (delta: 11.0 MB). Free memory was 21.5 MB in the beginning and 28.8 MB in the end (delta: -7.4 MB). Peak memory consumption was 19.8 MB. Max. memory is 14.3 GB. [2020-10-19 22:21:32,153 INFO L168 Benchmark]: Witness Printer took 5.50 ms. Allocated memory is still 58.7 MB. Free memory is still 28.3 MB. There was no memory consumed. Max. memory is 14.3 GB. [2020-10-19 22:21:32,158 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.08 ms. Allocated memory is still 32.0 MB. Free memory was 9.2 MB in the beginning and 9.1 MB in the end (delta: 47.7 kB). Peak memory consumption was 47.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 635.11 ms. Allocated memory was 41.9 MB in the beginning and 42.5 MB in the end (delta: 524.3 kB). Free memory was 19.5 MB in the beginning and 15.7 MB in the end (delta: 3.8 MB). Peak memory consumption was 10.7 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 70.72 ms. Allocated memory is still 42.5 MB. Free memory was 15.7 MB in the beginning and 12.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 47.35 ms. Allocated memory is still 42.5 MB. Free memory was 12.7 MB in the beginning and 10.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 14.3 GB. * RCFGBuilder took 841.82 ms. Allocated memory was 42.5 MB in the beginning and 47.7 MB in the end (delta: 5.2 MB). Free memory was 10.3 MB in the beginning and 22.2 MB in the end (delta: -11.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 14.3 GB. * TraceAbstraction took 1855.08 ms. Allocated memory was 47.7 MB in the beginning and 58.7 MB in the end (delta: 11.0 MB). Free memory was 21.5 MB in the beginning and 28.8 MB in the end (delta: -7.4 MB). Peak memory consumption was 19.8 MB. Max. memory is 14.3 GB. * Witness Printer took 5.50 ms. Allocated memory is still 58.7 MB. Free memory is still 28.3 MB. There was no memory consumed. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 303. Possible FailurePath: [L625] int __retres1 ; [L11] int s__info_callback = __VERIFIER_nondet_int(); [L12] unsigned int s__in_handshake = __VERIFIER_nondet_uint(); [L13] int s__state ; [L14] int s__new_session ; [L15] int s__server ; [L16] unsigned int s__version = __VERIFIER_nondet_uint(); [L17] int s__type ; [L18] int s__init_num ; [L19] int s__bbio = __VERIFIER_nondet_int(); [L20] int s__wbio = __VERIFIER_nondet_int(); [L21] int s__hit = __VERIFIER_nondet_int(); [L22] int s__rwstate ; [L23] int s__init_buf___0 ; [L24] int s__debug = __VERIFIER_nondet_int(); [L25] int s__shutdown ; [L26] int s__ctx__info_callback = __VERIFIER_nondet_int(); [L27] unsigned int s__ctx__stats__sess_connect_renegotiate ; [L28] unsigned int s__ctx__stats__sess_connect ; [L29] unsigned int s__ctx__stats__sess_hit = __VERIFIER_nondet_uint(); [L30] unsigned int s__ctx__stats__sess_connect_good = __VERIFIER_nondet_uint(); [L31] int s__s3__change_cipher_spec ; [L32] int s__s3__flags ; [L33] int s__s3__delay_buf_pop_ret ; [L34] int s__s3__tmp__cert_req = __VERIFIER_nondet_int(); [L35] int s__s3__tmp__new_compression = __VERIFIER_nondet_int(); [L36] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int(); [L37] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int(); [L38] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int(); [L39] int s__s3__tmp__next_state___0 ; [L40] int s__s3__tmp__new_compression__id = __VERIFIER_nondet_int(); [L41] int s__session__cipher ; [L42] int s__session__compress_meth ; [L43] int buf ; [L44] unsigned long tmp ; [L45] unsigned long l ; [L46] int num1 ; [L47] int cb ; [L48] int ret ; [L49] int new_state ; [L50] int state ; [L51] int skip ; [L52] int tmp___0 ; [L53] unsigned int tmp___1 = __VERIFIER_nondet_uint(); [L54] unsigned int tmp___2 = __VERIFIER_nondet_uint(); [L55] int tmp___3 = __VERIFIER_nondet_int(); [L56] int tmp___4 = __VERIFIER_nondet_int(); [L57] int tmp___5 = __VERIFIER_nondet_int(); [L58] int tmp___6 = __VERIFIER_nondet_int(); [L59] int tmp___7 = __VERIFIER_nondet_int(); [L60] int tmp___8 = __VERIFIER_nondet_int(); [L61] int tmp___9 = __VERIFIER_nondet_int(); [L62] int blastFlag ; [L63] int ag_X ; [L64] int ag_Y ; [L65] int ag_Z ; [L66] int __retres60 ; [L69] s__state = 12292 [L70] blastFlag = 0 [L71] tmp = __VERIFIER_nondet_int() [L72] cb = 0 [L73] ret = -1 [L74] skip = 0 [L75] tmp___0 = 0 [L76] COND TRUE s__info_callback != 0 [L77] cb = s__info_callback [L85] s__in_handshake = s__in_handshake + 1 [L86] COND FALSE !(tmp___1 + 12288) [L95] COND TRUE \read(s__hit) [L96] ag_Y = 208 [L101] COND TRUE 1 [L103] state = s__state [L104] COND TRUE s__state == 12292 [L207] s__new_session = 1 [L208] s__state = 4096 [L209] s__ctx__stats__sess_connect_renegotiate = s__ctx__stats__sess_connect_renegotiate + 1 [L214] s__server = 0 [L215] COND TRUE cb != 0 [L220] COND FALSE !(s__version + 65280 != 768) [L226] s__type = 4096 [L227] COND FALSE !((unsigned long )s__init_buf___0 == (unsigned long )((void *)0)) [L245] COND FALSE !(! tmp___4) [L251] COND FALSE !(! tmp___5) [L257] s__state = 4368 [L258] s__ctx__stats__sess_connect = s__ctx__stats__sess_connect + 1 [L259] s__init_num = 0 [L574] COND FALSE !(! s__s3__tmp__reuse_message) [L603] skip = 0 [L101] COND TRUE 1 [L103] state = s__state [L104] COND FALSE !(s__state == 12292) [L107] COND FALSE !(s__state == 16384) [L110] COND FALSE !(s__state == 4096) [L113] COND FALSE !(s__state == 20480) [L116] COND FALSE !(s__state == 4099) [L119] COND TRUE s__state == 4368 [L263] s__shutdown = 0 [L264] ret = __VERIFIER_nondet_int() [L265] COND TRUE blastFlag == 0 [L266] blastFlag = 1 [L270] COND FALSE !(ret <= 0) [L275] s__state = 4384 [L276] ag_X = s__state - 32 [L277] s__init_num = 0 [L278] COND TRUE (unsigned long )s__bbio != (unsigned long )s__wbio [L574] COND FALSE !(! s__s3__tmp__reuse_message) [L603] skip = 0 [L101] COND TRUE 1 [L103] state = s__state [L104] COND FALSE !(s__state == 12292) [L107] COND FALSE !(s__state == 16384) [L110] COND FALSE !(s__state == 4096) [L113] COND FALSE !(s__state == 20480) [L116] COND FALSE !(s__state == 4099) [L119] COND FALSE !(s__state == 4368) [L122] COND FALSE !(s__state == 4369) [L125] COND TRUE s__state == 4384 [L286] ret = __VERIFIER_nondet_int() [L287] COND TRUE blastFlag == 1 [L288] blastFlag = 2 [L296] COND FALSE !(ret <= 0) [L301] s__state = ag_X [L302] COND TRUE \read(s__hit) [L303] s__state = s__state | ag_Y [L307] s__init_num = 0 [L574] COND FALSE !(! s__s3__tmp__reuse_message) [L603] skip = 0 [L101] COND TRUE 1 [L103] state = s__state [L104] COND FALSE !(s__state == 12292) [L107] COND FALSE !(s__state == 16384) [L110] COND FALSE !(s__state == 4096) [L113] COND FALSE !(s__state == 20480) [L116] COND FALSE !(s__state == 4099) [L119] COND FALSE !(s__state == 4368) [L122] COND FALSE !(s__state == 4369) [L125] COND FALSE !(s__state == 4384) [L128] COND FALSE !(s__state == 4385) [L131] COND FALSE !(s__state == 4400) [L134] COND FALSE !(s__state == 4401) [L137] COND FALSE !(s__state == 4416) [L140] COND FALSE !(s__state == 4417) [L143] COND TRUE s__state == 4432 [L353] ret = __VERIFIER_nondet_int() [L354] COND TRUE blastFlag <= 5 [L3] __assert_fail("0", "s3_clnt_3.BV.c.cil-2a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 127 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.6s, OverallIterations: 5, TraceHistogramMax: 4, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 714 SDtfs, 58 SDslu, 412 SDs, 0 SdLazy, 296 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=171occurred in iteration=4, 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, 4 MinimizatonAttempts, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 232 NumberOfCodeBlocks, 232 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 160 ConstructedInterpolants, 0 QuantifiedInterpolants, 11828 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 35/35 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-9a8b2e8 [2020-10-19 22:21:34,315 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 22:21:34,318 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 22:21:34,361 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 22:21:34,361 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 22:21:34,371 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 22:21:34,373 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 22:21:34,377 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 22:21:34,379 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 22:21:34,390 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 22:21:34,391 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 22:21:34,393 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 22:21:34,393 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 22:21:34,396 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 22:21:34,397 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 22:21:34,399 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 22:21:34,401 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 22:21:34,402 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 22:21:34,404 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 22:21:34,412 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 22:21:34,414 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 22:21:34,415 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 22:21:34,417 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 22:21:34,418 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 22:21:34,430 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 22:21:34,431 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 22:21:34,431 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 22:21:34,432 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 22:21:34,434 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 22:21:34,435 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 22:21:34,435 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 22:21:34,436 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 22:21:34,436 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 22:21:34,437 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 22:21:34,439 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 22:21:34,439 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 22:21:34,439 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 22:21:34,440 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 22:21:34,440 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 22:21:34,441 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 22:21:34,442 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 22:21:34,443 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-19 22:21:34,484 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 22:21:34,485 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 22:21:34,486 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 22:21:34,487 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 22:21:34,487 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 22:21:34,487 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 22:21:34,488 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 22:21:34,488 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 22:21:34,488 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 22:21:34,488 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-19 22:21:34,490 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 22:21:34,490 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-19 22:21:34,490 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-19 22:21:34,491 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-19 22:21:34,491 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 22:21:34,491 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 22:21:34,491 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 22:21:34,492 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-19 22:21:34,492 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 22:21:34,492 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 22:21:34,493 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 22:21:34,493 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 22:21:34,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 22:21:34,493 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 22:21:34,494 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 22:21:34,494 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-19 22:21:34,494 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-19 22:21:34,494 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-19 22:21:34,494 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-19 22:21:34,495 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 22:21:34,495 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-19 22:21:34,495 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(reach_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 -> f963e087de2c8fcbc7f626f7e7b1f1088f7756c7 [2020-10-19 22:21:34,733 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 22:21:34,746 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 22:21:34,750 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 22:21:34,752 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 22:21:34,752 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 22:21:34,753 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c [2020-10-19 22:21:34,827 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/828496017/f39a0dd360a348dcacf7da1c686bf250/FLAGbe456d82a [2020-10-19 22:21:35,332 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 22:21:35,333 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c [2020-10-19 22:21:35,348 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/828496017/f39a0dd360a348dcacf7da1c686bf250/FLAGbe456d82a [2020-10-19 22:21:35,643 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/828496017/f39a0dd360a348dcacf7da1c686bf250 [2020-10-19 22:21:35,646 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 22:21:35,651 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 22:21:35,652 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 22:21:35,653 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 22:21:35,657 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 22:21:35,658 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:21:35" (1/1) ... [2020-10-19 22:21:35,661 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c0dd090 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:35, skipping insertion in model container [2020-10-19 22:21:35,662 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:21:35" (1/1) ... [2020-10-19 22:21:35,670 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 22:21:35,737 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 22:21:36,077 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:21:36,092 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 22:21:36,167 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:21:36,184 INFO L208 MainTranslator]: Completed translation [2020-10-19 22:21:36,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:36 WrapperNode [2020-10-19 22:21:36,185 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 22:21:36,186 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 22:21:36,186 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 22:21:36,186 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 22:21:36,195 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:36" (1/1) ... [2020-10-19 22:21:36,207 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:36" (1/1) ... [2020-10-19 22:21:36,260 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 22:21:36,261 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 22:21:36,261 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 22:21:36,261 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 22:21:36,272 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:36" (1/1) ... [2020-10-19 22:21:36,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:36" (1/1) ... [2020-10-19 22:21:36,281 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:36" (1/1) ... [2020-10-19 22:21:36,282 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:36" (1/1) ... [2020-10-19 22:21:36,291 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:36" (1/1) ... [2020-10-19 22:21:36,299 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:36" (1/1) ... [2020-10-19 22:21:36,303 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:36" (1/1) ... [2020-10-19 22:21:36,308 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 22:21:36,309 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 22:21:36,309 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 22:21:36,309 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 22:21:36,310 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:36" (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 [2020-10-19 22:21:36,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-19 22:21:36,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 22:21:36,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 22:21:36,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 22:21:36,547 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-19 22:21:37,141 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-10-19 22:21:37,142 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-10-19 22:21:37,163 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 22:21:37,164 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-19 22:21:37,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:21:37 BoogieIcfgContainer [2020-10-19 22:21:37,168 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 22:21:37,169 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 22:21:37,169 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 22:21:37,173 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 22:21:37,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 10:21:35" (1/3) ... [2020-10-19 22:21:37,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6123134 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:21:37, skipping insertion in model container [2020-10-19 22:21:37,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:36" (2/3) ... [2020-10-19 22:21:37,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6123134 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:21:37, skipping insertion in model container [2020-10-19 22:21:37,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:21:37" (3/3) ... [2020-10-19 22:21:37,179 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt_3.BV.c.cil-2a.c [2020-10-19 22:21:37,191 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 22:21:37,201 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-19 22:21:37,218 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-19 22:21:37,269 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 22:21:37,270 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-19 22:21:37,271 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 22:21:37,271 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 22:21:37,271 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 22:21:37,272 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 22:21:37,272 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 22:21:37,272 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 22:21:37,305 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states. [2020-10-19 22:21:37,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-19 22:21:37,320 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:21:37,322 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:21:37,322 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:21:37,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:21:37,329 INFO L82 PathProgramCache]: Analyzing trace with hash 259999105, now seen corresponding path program 1 times [2020-10-19 22:21:37,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:21:37,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [50721912] [2020-10-19 22:21:37,348 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 [2020-10-19 22:21:37,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:21:37,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 22:21:37,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:21:37,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:21:37,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:21:37,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:21:37,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [50721912] [2020-10-19 22:21:37,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:21:37,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-19 22:21:37,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163758555] [2020-10-19 22:21:37,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:21:37,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:21:37,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:21:37,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:21:37,572 INFO L87 Difference]: Start difference. First operand 127 states. Second operand 3 states. [2020-10-19 22:21:37,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:21:37,794 INFO L93 Difference]: Finished difference Result 248 states and 424 transitions. [2020-10-19 22:21:37,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:21:37,796 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-10-19 22:21:37,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:21:37,810 INFO L225 Difference]: With dead ends: 248 [2020-10-19 22:21:37,810 INFO L226 Difference]: Without dead ends: 113 [2020-10-19 22:21:37,814 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:21:37,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-19 22:21:37,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2020-10-19 22:21:37,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-19 22:21:37,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 171 transitions. [2020-10-19 22:21:37,864 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 171 transitions. Word has length 25 [2020-10-19 22:21:37,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:21:37,865 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 171 transitions. [2020-10-19 22:21:37,865 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:21:37,865 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 171 transitions. [2020-10-19 22:21:37,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-19 22:21:37,867 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:21:37,867 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:21:38,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-19 22:21:38,069 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:21:38,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:21:38,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1138040513, now seen corresponding path program 1 times [2020-10-19 22:21:38,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:21:38,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [106871625] [2020-10-19 22:21:38,072 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 [2020-10-19 22:21:38,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:21:38,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 22:21:38,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:21:38,177 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:21:38,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:21:38,197 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:21:38,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [106871625] [2020-10-19 22:21:38,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:21:38,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-19 22:21:38,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444320114] [2020-10-19 22:21:38,203 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:21:38,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:21:38,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:21:38,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:21:38,206 INFO L87 Difference]: Start difference. First operand 113 states and 171 transitions. Second operand 3 states. [2020-10-19 22:21:38,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:21:38,453 INFO L93 Difference]: Finished difference Result 233 states and 356 transitions. [2020-10-19 22:21:38,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:21:38,454 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2020-10-19 22:21:38,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:21:38,457 INFO L225 Difference]: With dead ends: 233 [2020-10-19 22:21:38,457 INFO L226 Difference]: Without dead ends: 131 [2020-10-19 22:21:38,460 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:21:38,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-19 22:21:38,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 128. [2020-10-19 22:21:38,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-19 22:21:38,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 191 transitions. [2020-10-19 22:21:38,485 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 191 transitions. Word has length 37 [2020-10-19 22:21:38,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:21:38,487 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 191 transitions. [2020-10-19 22:21:38,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:21:38,488 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 191 transitions. [2020-10-19 22:21:38,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-19 22:21:38,492 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:21:38,493 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:21:38,707 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-19 22:21:38,708 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:21:38,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:21:38,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1126420040, now seen corresponding path program 1 times [2020-10-19 22:21:38,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:21:38,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [452894058] [2020-10-19 22:21:38,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-19 22:21:38,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:21:38,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 22:21:38,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:21:38,812 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-19 22:21:38,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:21:38,825 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-19 22:21:38,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [452894058] [2020-10-19 22:21:38,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:21:38,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-19 22:21:38,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232498560] [2020-10-19 22:21:38,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:21:38,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:21:38,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:21:38,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:21:38,832 INFO L87 Difference]: Start difference. First operand 128 states and 191 transitions. Second operand 3 states. [2020-10-19 22:21:38,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:21:38,874 INFO L93 Difference]: Finished difference Result 271 states and 400 transitions. [2020-10-19 22:21:38,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:21:38,874 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-10-19 22:21:38,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:21:38,877 INFO L225 Difference]: With dead ends: 271 [2020-10-19 22:21:38,877 INFO L226 Difference]: Without dead ends: 154 [2020-10-19 22:21:38,878 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:21:38,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-19 22:21:38,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2020-10-19 22:21:38,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-19 22:21:38,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 224 transitions. [2020-10-19 22:21:38,892 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 224 transitions. Word has length 51 [2020-10-19 22:21:38,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:21:38,892 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 224 transitions. [2020-10-19 22:21:38,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:21:38,893 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 224 transitions. [2020-10-19 22:21:38,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-19 22:21:38,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:21:38,895 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:21:39,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-19 22:21:39,111 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:21:39,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:21:39,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1260433546, now seen corresponding path program 1 times [2020-10-19 22:21:39,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:21:39,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [144420116] [2020-10-19 22:21:39,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-10-19 22:21:39,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:21:39,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 22:21:39,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:21:39,210 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-19 22:21:39,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:21:39,216 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-19 22:21:39,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [144420116] [2020-10-19 22:21:39,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:21:39,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-19 22:21:39,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468452253] [2020-10-19 22:21:39,218 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:21:39,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:21:39,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:21:39,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:21:39,219 INFO L87 Difference]: Start difference. First operand 154 states and 224 transitions. Second operand 3 states. [2020-10-19 22:21:39,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:21:39,380 INFO L93 Difference]: Finished difference Result 292 states and 435 transitions. [2020-10-19 22:21:39,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:21:39,381 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-10-19 22:21:39,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:21:39,383 INFO L225 Difference]: With dead ends: 292 [2020-10-19 22:21:39,383 INFO L226 Difference]: Without dead ends: 175 [2020-10-19 22:21:39,384 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:21:39,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-19 22:21:39,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 171. [2020-10-19 22:21:39,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-19 22:21:39,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 246 transitions. [2020-10-19 22:21:39,397 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 246 transitions. Word has length 51 [2020-10-19 22:21:39,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:21:39,397 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 246 transitions. [2020-10-19 22:21:39,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:21:39,398 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 246 transitions. [2020-10-19 22:21:39,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-19 22:21:39,399 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:21:39,400 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:21:39,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-19 22:21:39,612 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:21:39,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:21:39,612 INFO L82 PathProgramCache]: Analyzing trace with hash -457628469, now seen corresponding path program 1 times [2020-10-19 22:21:39,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:21:39,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1328397121] [2020-10-19 22:21:39,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-10-19 22:21:39,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:21:39,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-19 22:21:39,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:21:39,831 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-19 22:21:39,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:21:40,020 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-19 22:21:40,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1328397121] [2020-10-19 22:21:40,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 22:21:40,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-10-19 22:21:40,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719214792] [2020-10-19 22:21:40,021 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 22:21:40,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:21:40,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 22:21:40,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-19 22:21:40,022 INFO L87 Difference]: Start difference. First operand 171 states and 246 transitions. Second operand 6 states. [2020-10-19 22:21:40,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:21:40,664 INFO L93 Difference]: Finished difference Result 566 states and 848 transitions. [2020-10-19 22:21:40,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 22:21:40,664 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2020-10-19 22:21:40,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:21:40,669 INFO L225 Difference]: With dead ends: 566 [2020-10-19 22:21:40,669 INFO L226 Difference]: Without dead ends: 431 [2020-10-19 22:21:40,670 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-19 22:21:40,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2020-10-19 22:21:40,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 419. [2020-10-19 22:21:40,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2020-10-19 22:21:40,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 607 transitions. [2020-10-19 22:21:40,717 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 607 transitions. Word has length 68 [2020-10-19 22:21:40,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:21:40,720 INFO L481 AbstractCegarLoop]: Abstraction has 419 states and 607 transitions. [2020-10-19 22:21:40,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 22:21:40,721 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 607 transitions. [2020-10-19 22:21:40,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-19 22:21:40,729 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:21:40,729 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:21:40,934 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-19 22:21:40,935 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:21:40,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:21:40,935 INFO L82 PathProgramCache]: Analyzing trace with hash 2031900493, now seen corresponding path program 1 times [2020-10-19 22:21:40,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:21:40,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [986183044] [2020-10-19 22:21:40,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-10-19 22:21:41,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:21:41,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 22:21:41,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:21:41,048 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-19 22:21:41,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:21:41,081 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-19 22:21:41,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [986183044] [2020-10-19 22:21:41,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:21:41,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-19 22:21:41,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126262882] [2020-10-19 22:21:41,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:21:41,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:21:41,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:21:41,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:21:41,094 INFO L87 Difference]: Start difference. First operand 419 states and 607 transitions. Second operand 3 states. [2020-10-19 22:21:41,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:21:41,152 INFO L93 Difference]: Finished difference Result 927 states and 1364 transitions. [2020-10-19 22:21:41,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:21:41,153 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2020-10-19 22:21:41,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:21:41,157 INFO L225 Difference]: With dead ends: 927 [2020-10-19 22:21:41,158 INFO L226 Difference]: Without dead ends: 574 [2020-10-19 22:21:41,159 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:21:41,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2020-10-19 22:21:41,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 572. [2020-10-19 22:21:41,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 572 states. [2020-10-19 22:21:41,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 835 transitions. [2020-10-19 22:21:41,188 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 835 transitions. Word has length 68 [2020-10-19 22:21:41,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:21:41,189 INFO L481 AbstractCegarLoop]: Abstraction has 572 states and 835 transitions. [2020-10-19 22:21:41,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:21:41,190 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 835 transitions. [2020-10-19 22:21:41,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-19 22:21:41,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:21:41,191 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:21:41,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-10-19 22:21:41,403 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:21:41,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:21:41,404 INFO L82 PathProgramCache]: Analyzing trace with hash -875025075, now seen corresponding path program 1 times [2020-10-19 22:21:41,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:21:41,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [484493628] [2020-10-19 22:21:41,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-10-19 22:21:41,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:21:41,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 22:21:41,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:21:41,521 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-19 22:21:41,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:21:41,532 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-19 22:21:41,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [484493628] [2020-10-19 22:21:41,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:21:41,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-19 22:21:41,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554802228] [2020-10-19 22:21:41,534 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:21:41,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:21:41,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:21:41,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:21:41,536 INFO L87 Difference]: Start difference. First operand 572 states and 835 transitions. Second operand 3 states. [2020-10-19 22:21:41,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:21:41,570 INFO L93 Difference]: Finished difference Result 576 states and 837 transitions. [2020-10-19 22:21:41,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:21:41,573 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2020-10-19 22:21:41,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:21:41,577 INFO L225 Difference]: With dead ends: 576 [2020-10-19 22:21:41,577 INFO L226 Difference]: Without dead ends: 419 [2020-10-19 22:21:41,578 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:21:41,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2020-10-19 22:21:41,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 417. [2020-10-19 22:21:41,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-10-19 22:21:41,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 598 transitions. [2020-10-19 22:21:41,595 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 598 transitions. Word has length 68 [2020-10-19 22:21:41,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:21:41,596 INFO L481 AbstractCegarLoop]: Abstraction has 417 states and 598 transitions. [2020-10-19 22:21:41,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:21:41,597 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 598 transitions. [2020-10-19 22:21:41,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-19 22:21:41,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:21:41,599 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:21:41,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-10-19 22:21:41,811 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:21:41,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:21:41,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1614503887, now seen corresponding path program 1 times [2020-10-19 22:21:41,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:21:41,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [374897561] [2020-10-19 22:21:41,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-10-19 22:21:41,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:21:41,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-19 22:21:41,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:21:41,990 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 13 proven. 25 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-19 22:21:41,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:21:42,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [374897561] [2020-10-19 22:21:42,063 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-19 22:21:42,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1477372680] [2020-10-19 22:21:42,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-19 22:21:42,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:21:42,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-19 22:21:42,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:21:42,293 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 13 proven. 25 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-19 22:21:42,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:21:42,345 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 12 proven. 26 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-19 22:21:42,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 22:21:42,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2020-10-19 22:21:42,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614276812] [2020-10-19 22:21:42,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-19 22:21:42,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:21:42,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-19 22:21:42,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-19 22:21:42,348 INFO L87 Difference]: Start difference. First operand 417 states and 598 transitions. Second operand 11 states. [2020-10-19 22:21:43,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:21:43,502 INFO L93 Difference]: Finished difference Result 855 states and 1264 transitions. [2020-10-19 22:21:43,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-19 22:21:43,503 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 68 [2020-10-19 22:21:43,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:21:43,508 INFO L225 Difference]: With dead ends: 855 [2020-10-19 22:21:43,508 INFO L226 Difference]: Without dead ends: 699 [2020-10-19 22:21:43,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2020-10-19 22:21:43,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2020-10-19 22:21:43,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 476. [2020-10-19 22:21:43,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 476 states. [2020-10-19 22:21:43,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 667 transitions. [2020-10-19 22:21:43,530 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 667 transitions. Word has length 68 [2020-10-19 22:21:43,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:21:43,531 INFO L481 AbstractCegarLoop]: Abstraction has 476 states and 667 transitions. [2020-10-19 22:21:43,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-19 22:21:43,531 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 667 transitions. [2020-10-19 22:21:43,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-19 22:21:43,532 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:21:43,533 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:21:43,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3,10 cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-19 22:21:43,945 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:21:43,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:21:43,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1844660206, now seen corresponding path program 1 times [2020-10-19 22:21:43,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:21:43,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2060135745] [2020-10-19 22:21:43,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2020-10-19 22:21:44,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:21:44,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 22:21:44,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:21:44,044 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-10-19 22:21:44,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:21:44,062 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-10-19 22:21:44,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2060135745] [2020-10-19 22:21:44,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:21:44,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-19 22:21:44,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202534191] [2020-10-19 22:21:44,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:21:44,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:21:44,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:21:44,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:21:44,064 INFO L87 Difference]: Start difference. First operand 476 states and 667 transitions. Second operand 3 states. [2020-10-19 22:21:44,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:21:44,242 INFO L93 Difference]: Finished difference Result 934 states and 1333 transitions. [2020-10-19 22:21:44,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:21:44,243 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 85 [2020-10-19 22:21:44,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:21:44,248 INFO L225 Difference]: With dead ends: 934 [2020-10-19 22:21:44,248 INFO L226 Difference]: Without dead ends: 524 [2020-10-19 22:21:44,249 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:21:44,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2020-10-19 22:21:44,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 518. [2020-10-19 22:21:44,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 518 states. [2020-10-19 22:21:44,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 719 transitions. [2020-10-19 22:21:44,269 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 719 transitions. Word has length 85 [2020-10-19 22:21:44,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:21:44,270 INFO L481 AbstractCegarLoop]: Abstraction has 518 states and 719 transitions. [2020-10-19 22:21:44,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:21:44,270 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 719 transitions. [2020-10-19 22:21:44,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-19 22:21:44,272 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:21:44,272 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:21:44,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2020-10-19 22:21:44,487 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:21:44,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:21:44,487 INFO L82 PathProgramCache]: Analyzing trace with hash 2022672797, now seen corresponding path program 1 times [2020-10-19 22:21:44,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:21:44,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1366917858] [2020-10-19 22:21:44,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2020-10-19 22:21:44,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:21:44,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 22:21:44,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:21:44,604 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-19 22:21:44,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:21:44,624 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-19 22:21:44,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1366917858] [2020-10-19 22:21:44,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:21:44,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-10-19 22:21:44,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826281350] [2020-10-19 22:21:44,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:21:44,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:21:44,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:21:44,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:21:44,627 INFO L87 Difference]: Start difference. First operand 518 states and 719 transitions. Second operand 4 states. [2020-10-19 22:21:44,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:21:44,696 INFO L93 Difference]: Finished difference Result 1468 states and 2045 transitions. [2020-10-19 22:21:44,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:21:44,696 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2020-10-19 22:21:44,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:21:44,702 INFO L225 Difference]: With dead ends: 1468 [2020-10-19 22:21:44,702 INFO L226 Difference]: Without dead ends: 1016 [2020-10-19 22:21:44,703 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:21:44,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1016 states. [2020-10-19 22:21:44,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1016 to 1012. [2020-10-19 22:21:44,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1012 states. [2020-10-19 22:21:44,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1012 states to 1012 states and 1394 transitions. [2020-10-19 22:21:44,751 INFO L78 Accepts]: Start accepts. Automaton has 1012 states and 1394 transitions. Word has length 104 [2020-10-19 22:21:44,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:21:44,752 INFO L481 AbstractCegarLoop]: Abstraction has 1012 states and 1394 transitions. [2020-10-19 22:21:44,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:21:44,752 INFO L276 IsEmpty]: Start isEmpty. Operand 1012 states and 1394 transitions. [2020-10-19 22:21:44,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-19 22:21:44,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:21:44,754 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:21:44,967 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2020-10-19 22:21:44,968 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:21:44,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:21:44,968 INFO L82 PathProgramCache]: Analyzing trace with hash 1888659291, now seen corresponding path program 1 times [2020-10-19 22:21:44,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:21:44,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1275938332] [2020-10-19 22:21:44,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2020-10-19 22:21:45,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 22:21:45,057 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 22:21:45,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 22:21:45,118 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 22:21:45,367 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-19 22:21:45,368 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 22:21:45,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3 [2020-10-19 22:21:45,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 10:21:45 BoogieIcfgContainer [2020-10-19 22:21:45,695 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 22:21:45,696 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 22:21:45,696 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 22:21:45,696 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 22:21:45,696 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:21:37" (3/4) ... [2020-10-19 22:21:45,699 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-19 22:21:45,872 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 22:21:45,873 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 22:21:45,876 INFO L168 Benchmark]: Toolchain (without parser) took 10227.39 ms. Allocated memory was 35.1 MB in the beginning and 89.1 MB in the end (delta: 54.0 MB). Free memory was 12.1 MB in the beginning and 62.4 MB in the end (delta: -50.3 MB). Peak memory consumption was 55.4 MB. Max. memory is 14.3 GB. [2020-10-19 22:21:45,876 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 34.1 MB. Free memory was 19.0 MB in the beginning and 18.9 MB in the end (delta: 41.7 kB). Peak memory consumption was 41.7 kB. Max. memory is 14.3 GB. [2020-10-19 22:21:45,877 INFO L168 Benchmark]: CACSL2BoogieTranslator took 533.18 ms. Allocated memory was 35.1 MB in the beginning and 43.0 MB in the end (delta: 7.9 MB). Free memory was 11.2 MB in the beginning and 21.5 MB in the end (delta: -10.3 MB). Peak memory consumption was 7.7 MB. Max. memory is 14.3 GB. [2020-10-19 22:21:45,877 INFO L168 Benchmark]: Boogie Procedure Inliner took 74.16 ms. Allocated memory is still 43.0 MB. Free memory was 21.5 MB in the beginning and 18.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 14.3 GB. [2020-10-19 22:21:45,877 INFO L168 Benchmark]: Boogie Preprocessor took 47.83 ms. Allocated memory is still 43.0 MB. Free memory was 18.7 MB in the beginning and 16.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 14.3 GB. [2020-10-19 22:21:45,878 INFO L168 Benchmark]: RCFGBuilder took 859.01 ms. Allocated memory was 43.0 MB in the beginning and 45.1 MB in the end (delta: 2.1 MB). Free memory was 16.3 MB in the beginning and 14.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 7.5 MB. Max. memory is 14.3 GB. [2020-10-19 22:21:45,879 INFO L168 Benchmark]: TraceAbstraction took 8526.32 ms. Allocated memory was 45.1 MB in the beginning and 86.0 MB in the end (delta: 40.9 MB). Free memory was 14.0 MB in the beginning and 16.1 MB in the end (delta: -2.2 MB). Peak memory consumption was 38.7 MB. Max. memory is 14.3 GB. [2020-10-19 22:21:45,879 INFO L168 Benchmark]: Witness Printer took 177.08 ms. Allocated memory was 86.0 MB in the beginning and 89.1 MB in the end (delta: 3.1 MB). Free memory was 16.1 MB in the beginning and 62.4 MB in the end (delta: -46.3 MB). Peak memory consumption was 8.6 MB. Max. memory is 14.3 GB. [2020-10-19 22:21:45,882 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 34.1 MB. Free memory was 19.0 MB in the beginning and 18.9 MB in the end (delta: 41.7 kB). Peak memory consumption was 41.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 533.18 ms. Allocated memory was 35.1 MB in the beginning and 43.0 MB in the end (delta: 7.9 MB). Free memory was 11.2 MB in the beginning and 21.5 MB in the end (delta: -10.3 MB). Peak memory consumption was 7.7 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 74.16 ms. Allocated memory is still 43.0 MB. Free memory was 21.5 MB in the beginning and 18.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 47.83 ms. Allocated memory is still 43.0 MB. Free memory was 18.7 MB in the beginning and 16.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 14.3 GB. * RCFGBuilder took 859.01 ms. Allocated memory was 43.0 MB in the beginning and 45.1 MB in the end (delta: 2.1 MB). Free memory was 16.3 MB in the beginning and 14.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 7.5 MB. Max. memory is 14.3 GB. * TraceAbstraction took 8526.32 ms. Allocated memory was 45.1 MB in the beginning and 86.0 MB in the end (delta: 40.9 MB). Free memory was 14.0 MB in the beginning and 16.1 MB in the end (delta: -2.2 MB). Peak memory consumption was 38.7 MB. Max. memory is 14.3 GB. * Witness Printer took 177.08 ms. Allocated memory was 86.0 MB in the beginning and 89.1 MB in the end (delta: 3.1 MB). Free memory was 16.1 MB in the beginning and 62.4 MB in the end (delta: -46.3 MB). Peak memory consumption was 8.6 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L625] int __retres1 ; [L11] int s__info_callback = __VERIFIER_nondet_int(); [L12] unsigned int s__in_handshake = __VERIFIER_nondet_uint(); [L13] int s__state ; [L14] int s__new_session ; [L15] int s__server ; [L16] unsigned int s__version = __VERIFIER_nondet_uint(); [L17] int s__type ; [L18] int s__init_num ; [L19] int s__bbio = __VERIFIER_nondet_int(); [L20] int s__wbio = __VERIFIER_nondet_int(); [L21] int s__hit = __VERIFIER_nondet_int(); [L22] int s__rwstate ; [L23] int s__init_buf___0 ; [L24] int s__debug = __VERIFIER_nondet_int(); [L25] int s__shutdown ; [L26] int s__ctx__info_callback = __VERIFIER_nondet_int(); [L27] unsigned int s__ctx__stats__sess_connect_renegotiate ; [L28] unsigned int s__ctx__stats__sess_connect ; [L29] unsigned int s__ctx__stats__sess_hit = __VERIFIER_nondet_uint(); [L30] unsigned int s__ctx__stats__sess_connect_good = __VERIFIER_nondet_uint(); [L31] int s__s3__change_cipher_spec ; [L32] int s__s3__flags ; [L33] int s__s3__delay_buf_pop_ret ; [L34] int s__s3__tmp__cert_req = __VERIFIER_nondet_int(); [L35] int s__s3__tmp__new_compression = __VERIFIER_nondet_int(); [L36] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int(); [L37] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int(); [L38] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int(); [L39] int s__s3__tmp__next_state___0 ; [L40] int s__s3__tmp__new_compression__id = __VERIFIER_nondet_int(); [L41] int s__session__cipher ; [L42] int s__session__compress_meth ; [L43] int buf ; [L44] unsigned long tmp ; [L45] unsigned long l ; [L46] int num1 ; [L47] int cb ; [L48] int ret ; [L49] int new_state ; [L50] int state ; [L51] int skip ; [L52] int tmp___0 ; [L53] unsigned int tmp___1 = __VERIFIER_nondet_uint(); [L54] unsigned int tmp___2 = __VERIFIER_nondet_uint(); [L55] int tmp___3 = __VERIFIER_nondet_int(); [L56] int tmp___4 = __VERIFIER_nondet_int(); [L57] int tmp___5 = __VERIFIER_nondet_int(); [L58] int tmp___6 = __VERIFIER_nondet_int(); [L59] int tmp___7 = __VERIFIER_nondet_int(); [L60] int tmp___8 = __VERIFIER_nondet_int(); [L61] int tmp___9 = __VERIFIER_nondet_int(); [L62] int blastFlag ; [L63] int ag_X ; [L64] int ag_Y ; [L65] int ag_Z ; [L66] int __retres60 ; [L69] s__state = 12292 [L70] blastFlag = 0 [L71] tmp = __VERIFIER_nondet_int() [L72] cb = 0 [L73] ret = -1 [L74] skip = 0 [L75] tmp___0 = 0 [L76] COND TRUE s__info_callback != 0 [L77] cb = s__info_callback [L85] s__in_handshake = s__in_handshake + 1 [L86] COND FALSE !(tmp___1 + 12288) [L95] COND FALSE !(\read(s__hit)) [L98] ag_Z = 48 [L101] COND TRUE 1 [L103] state = s__state [L104] COND TRUE s__state == 12292 [L207] s__new_session = 1 [L208] s__state = 4096 [L209] s__ctx__stats__sess_connect_renegotiate = s__ctx__stats__sess_connect_renegotiate + 1 [L214] s__server = 0 [L215] COND TRUE cb != 0 [L220] COND FALSE !(s__version + 65280 != 768) [L226] s__type = 4096 [L227] COND FALSE !((unsigned long )s__init_buf___0 == (unsigned long )((void *)0)) [L245] COND FALSE !(! tmp___4) [L251] COND FALSE !(! tmp___5) [L257] s__state = 4368 [L258] s__ctx__stats__sess_connect = s__ctx__stats__sess_connect + 1 [L259] s__init_num = 0 [L574] COND FALSE !(! s__s3__tmp__reuse_message) [L603] skip = 0 [L101] COND TRUE 1 [L103] state = s__state [L104] COND FALSE !(s__state == 12292) [L107] COND FALSE !(s__state == 16384) [L110] COND FALSE !(s__state == 4096) [L113] COND FALSE !(s__state == 20480) [L116] COND FALSE !(s__state == 4099) [L119] COND TRUE s__state == 4368 [L263] s__shutdown = 0 [L264] ret = __VERIFIER_nondet_int() [L265] COND TRUE blastFlag == 0 [L266] blastFlag = 1 [L270] COND FALSE !(ret <= 0) [L275] s__state = 4384 [L276] ag_X = s__state - 32 [L277] s__init_num = 0 [L278] COND TRUE (unsigned long )s__bbio != (unsigned long )s__wbio [L574] COND FALSE !(! s__s3__tmp__reuse_message) [L603] skip = 0 [L101] COND TRUE 1 [L103] state = s__state [L104] COND FALSE !(s__state == 12292) [L107] COND FALSE !(s__state == 16384) [L110] COND FALSE !(s__state == 4096) [L113] COND FALSE !(s__state == 20480) [L116] COND FALSE !(s__state == 4099) [L119] COND FALSE !(s__state == 4368) [L122] COND FALSE !(s__state == 4369) [L125] COND TRUE s__state == 4384 [L286] ret = __VERIFIER_nondet_int() [L287] COND TRUE blastFlag == 1 [L288] blastFlag = 2 [L296] COND FALSE !(ret <= 0) [L301] s__state = ag_X [L302] COND FALSE !(\read(s__hit)) [L305] s__state = s__state | ag_Z [L307] s__init_num = 0 [L574] COND FALSE !(! s__s3__tmp__reuse_message) [L603] skip = 0 [L101] COND TRUE 1 [L103] state = s__state [L104] COND FALSE !(s__state == 12292) [L107] COND FALSE !(s__state == 16384) [L110] COND FALSE !(s__state == 4096) [L113] COND FALSE !(s__state == 20480) [L116] COND FALSE !(s__state == 4099) [L119] COND FALSE !(s__state == 4368) [L122] COND FALSE !(s__state == 4369) [L125] COND FALSE !(s__state == 4384) [L128] COND FALSE !(s__state == 4385) [L131] COND TRUE s__state == 4400 [L311] COND TRUE (unsigned long )s__s3__tmp__new_cipher__algorithms + 256UL [L312] skip = 1 [L326] s__state = 4416 [L327] s__init_num = 0 [L574] COND FALSE !(! s__s3__tmp__reuse_message) [L603] skip = 0 [L101] COND TRUE 1 [L103] state = s__state [L104] COND FALSE !(s__state == 12292) [L107] COND FALSE !(s__state == 16384) [L110] COND FALSE !(s__state == 4096) [L113] COND FALSE !(s__state == 20480) [L116] COND FALSE !(s__state == 4099) [L119] COND FALSE !(s__state == 4368) [L122] COND FALSE !(s__state == 4369) [L125] COND FALSE !(s__state == 4384) [L128] COND FALSE !(s__state == 4385) [L131] COND FALSE !(s__state == 4400) [L134] COND FALSE !(s__state == 4401) [L137] COND TRUE s__state == 4416 [L331] ret = __VERIFIER_nondet_int() [L332] COND FALSE !(blastFlag == 3) [L337] COND FALSE !(ret <= 0) [L342] s__state = 4432 [L343] s__init_num = 0 [L344] COND FALSE !(! tmp___6) [L574] COND FALSE !(! s__s3__tmp__reuse_message) [L603] skip = 0 [L101] COND TRUE 1 [L103] state = s__state [L104] COND FALSE !(s__state == 12292) [L107] COND FALSE !(s__state == 16384) [L110] COND FALSE !(s__state == 4096) [L113] COND FALSE !(s__state == 20480) [L116] COND FALSE !(s__state == 4099) [L119] COND FALSE !(s__state == 4368) [L122] COND FALSE !(s__state == 4369) [L125] COND FALSE !(s__state == 4384) [L128] COND FALSE !(s__state == 4385) [L131] COND FALSE !(s__state == 4400) [L134] COND FALSE !(s__state == 4401) [L137] COND FALSE !(s__state == 4416) [L140] COND FALSE !(s__state == 4417) [L143] COND TRUE s__state == 4432 [L353] ret = __VERIFIER_nondet_int() [L354] COND TRUE blastFlag <= 5 [L3] __assert_fail("0", "s3_clnt_3.BV.c.cil-2a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 127 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 8.3s, OverallIterations: 11, TraceHistogramMax: 6, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1871 SDtfs, 1774 SDslu, 2662 SDs, 0 SdLazy, 1671 SolverSat, 239 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1346 GetRequests, 1314 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1012occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 256 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 729 NumberOfCodeBlocks, 729 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 1230 ConstructedInterpolants, 59 QuantifiedInterpolants, 235612 SizeOfPredicates, 11 NumberOfNonLiveVariables, 1273 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 20 InterpolantComputations, 16 PerfectInterpolantSequences, 727/828 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 incorrect! Received shutdown request...