./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ssh-simplified/s3_srvr_10.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_ad460ea0-8371-432a-9e21-1f722cbd92c6/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_ad460ea0-8371-432a-9e21-1f722cbd92c6/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ad460ea0-8371-432a-9e21-1f722cbd92c6/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ad460ea0-8371-432a-9e21-1f722cbd92c6/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ssh-simplified/s3_srvr_10.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ad460ea0-8371-432a-9e21-1f722cbd92c6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ad460ea0-8371-432a-9e21-1f722cbd92c6/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 221038eb3d852e675138331615da45f0057866c6 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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-f470102 [2019-12-07 15:10:55,204 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 15:10:55,205 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 15:10:55,214 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 15:10:55,214 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 15:10:55,215 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 15:10:55,216 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 15:10:55,217 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 15:10:55,219 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 15:10:55,219 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 15:10:55,220 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 15:10:55,221 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 15:10:55,221 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 15:10:55,222 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 15:10:55,223 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 15:10:55,223 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 15:10:55,224 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 15:10:55,225 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 15:10:55,226 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 15:10:55,228 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 15:10:55,229 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 15:10:55,230 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 15:10:55,230 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 15:10:55,231 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 15:10:55,233 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 15:10:55,233 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 15:10:55,233 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 15:10:55,233 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 15:10:55,234 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 15:10:55,234 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 15:10:55,234 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 15:10:55,235 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 15:10:55,235 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 15:10:55,236 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 15:10:55,236 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 15:10:55,236 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 15:10:55,237 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 15:10:55,237 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 15:10:55,237 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 15:10:55,238 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 15:10:55,238 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 15:10:55,239 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ad460ea0-8371-432a-9e21-1f722cbd92c6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 15:10:55,247 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 15:10:55,248 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 15:10:55,248 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 15:10:55,248 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 15:10:55,249 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 15:10:55,249 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 15:10:55,249 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 15:10:55,249 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 15:10:55,249 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 15:10:55,249 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 15:10:55,249 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 15:10:55,249 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 15:10:55,250 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 15:10:55,250 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 15:10:55,250 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 15:10:55,250 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 15:10:55,250 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 15:10:55,250 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 15:10:55,250 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 15:10:55,250 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 15:10:55,251 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 15:10:55,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 15:10:55,251 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 15:10:55,251 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 15:10:55,251 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 15:10:55,251 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 15:10:55,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 15:10:55,251 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 15:10:55,252 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 15:10:55,252 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ad460ea0-8371-432a-9e21-1f722cbd92c6/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 221038eb3d852e675138331615da45f0057866c6 [2019-12-07 15:10:55,356 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 15:10:55,366 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 15:10:55,369 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 15:10:55,370 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 15:10:55,371 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 15:10:55,371 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ad460ea0-8371-432a-9e21-1f722cbd92c6/bin/uautomizer/../../sv-benchmarks/c/ssh-simplified/s3_srvr_10.cil.c [2019-12-07 15:10:55,412 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ad460ea0-8371-432a-9e21-1f722cbd92c6/bin/uautomizer/data/5be4221e2/a265b262a6bb42c482255260ee568d1a/FLAG1886ae1d3 [2019-12-07 15:10:55,815 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 15:10:55,815 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ad460ea0-8371-432a-9e21-1f722cbd92c6/sv-benchmarks/c/ssh-simplified/s3_srvr_10.cil.c [2019-12-07 15:10:55,823 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ad460ea0-8371-432a-9e21-1f722cbd92c6/bin/uautomizer/data/5be4221e2/a265b262a6bb42c482255260ee568d1a/FLAG1886ae1d3 [2019-12-07 15:10:56,187 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ad460ea0-8371-432a-9e21-1f722cbd92c6/bin/uautomizer/data/5be4221e2/a265b262a6bb42c482255260ee568d1a [2019-12-07 15:10:56,189 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 15:10:56,190 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 15:10:56,191 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 15:10:56,191 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 15:10:56,193 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 15:10:56,194 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:10:56" (1/1) ... [2019-12-07 15:10:56,196 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a62463e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:10:56, skipping insertion in model container [2019-12-07 15:10:56,196 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:10:56" (1/1) ... [2019-12-07 15:10:56,202 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 15:10:56,230 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 15:10:56,413 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:10:56,416 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 15:10:56,464 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:10:56,473 INFO L208 MainTranslator]: Completed translation [2019-12-07 15:10:56,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:10:56 WrapperNode [2019-12-07 15:10:56,474 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 15:10:56,474 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 15:10:56,475 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 15:10:56,475 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 15:10:56,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:10:56" (1/1) ... [2019-12-07 15:10:56,486 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:10:56" (1/1) ... [2019-12-07 15:10:56,514 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 15:10:56,514 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 15:10:56,514 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 15:10:56,514 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 15:10:56,521 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:10:56" (1/1) ... [2019-12-07 15:10:56,521 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:10:56" (1/1) ... [2019-12-07 15:10:56,523 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:10:56" (1/1) ... [2019-12-07 15:10:56,524 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:10:56" (1/1) ... [2019-12-07 15:10:56,529 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:10:56" (1/1) ... [2019-12-07 15:10:56,535 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:10:56" (1/1) ... [2019-12-07 15:10:56,537 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:10:56" (1/1) ... [2019-12-07 15:10:56,539 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 15:10:56,540 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 15:10:56,540 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 15:10:56,540 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 15:10:56,541 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:10:56" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ad460ea0-8371-432a-9e21-1f722cbd92c6/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 15:10:56,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 15:10:56,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 15:10:56,652 WARN L738 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-12-07 15:10:56,965 INFO L691 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2019-12-07 15:10:56,965 INFO L691 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2019-12-07 15:10:56,966 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 15:10:56,966 INFO L287 CfgBuilder]: Removed 7 assume(true) statements. [2019-12-07 15:10:56,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:10:56 BoogieIcfgContainer [2019-12-07 15:10:56,967 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 15:10:56,967 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 15:10:56,967 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 15:10:56,969 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 15:10:56,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 03:10:56" (1/3) ... [2019-12-07 15:10:56,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a9cc612 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:10:56, skipping insertion in model container [2019-12-07 15:10:56,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:10:56" (2/3) ... [2019-12-07 15:10:56,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a9cc612 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:10:56, skipping insertion in model container [2019-12-07 15:10:56,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:10:56" (3/3) ... [2019-12-07 15:10:56,971 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_10.cil.c [2019-12-07 15:10:56,978 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 15:10:56,982 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 15:10:56,990 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 15:10:57,006 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 15:10:57,006 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 15:10:57,006 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 15:10:57,006 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 15:10:57,006 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 15:10:57,006 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 15:10:57,006 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 15:10:57,007 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 15:10:57,019 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states. [2019-12-07 15:10:57,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-12-07 15:10:57,023 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:10:57,024 INFO L410 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] [2019-12-07 15:10:57,024 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:10:57,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:10:57,027 INFO L82 PathProgramCache]: Analyzing trace with hash 2084821380, now seen corresponding path program 1 times [2019-12-07 15:10:57,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:10:57,033 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834049951] [2019-12-07 15:10:57,033 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:10:57,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:10:57,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:10:57,156 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834049951] [2019-12-07 15:10:57,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:10:57,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 15:10:57,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994256886] [2019-12-07 15:10:57,161 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 15:10:57,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:10:57,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 15:10:57,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 15:10:57,171 INFO L87 Difference]: Start difference. First operand 146 states. Second operand 3 states. [2019-12-07 15:10:57,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:10:57,301 INFO L93 Difference]: Finished difference Result 311 states and 529 transitions. [2019-12-07 15:10:57,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 15:10:57,302 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2019-12-07 15:10:57,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:10:57,311 INFO L225 Difference]: With dead ends: 311 [2019-12-07 15:10:57,311 INFO L226 Difference]: Without dead ends: 152 [2019-12-07 15:10:57,314 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 15:10:57,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2019-12-07 15:10:57,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 150. [2019-12-07 15:10:57,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2019-12-07 15:10:57,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 235 transitions. [2019-12-07 15:10:57,347 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 235 transitions. Word has length 22 [2019-12-07 15:10:57,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:10:57,348 INFO L462 AbstractCegarLoop]: Abstraction has 150 states and 235 transitions. [2019-12-07 15:10:57,348 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 15:10:57,348 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 235 transitions. [2019-12-07 15:10:57,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-12-07 15:10:57,349 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:10:57,349 INFO L410 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] [2019-12-07 15:10:57,349 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:10:57,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:10:57,349 INFO L82 PathProgramCache]: Analyzing trace with hash -586952456, now seen corresponding path program 1 times [2019-12-07 15:10:57,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:10:57,350 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853697568] [2019-12-07 15:10:57,350 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:10:57,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:10:57,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:10:57,384 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853697568] [2019-12-07 15:10:57,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:10:57,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 15:10:57,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347585906] [2019-12-07 15:10:57,385 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 15:10:57,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:10:57,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 15:10:57,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 15:10:57,386 INFO L87 Difference]: Start difference. First operand 150 states and 235 transitions. Second operand 3 states. [2019-12-07 15:10:57,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:10:57,474 INFO L93 Difference]: Finished difference Result 313 states and 493 transitions. [2019-12-07 15:10:57,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 15:10:57,474 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2019-12-07 15:10:57,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:10:57,475 INFO L225 Difference]: With dead ends: 313 [2019-12-07 15:10:57,476 INFO L226 Difference]: Without dead ends: 170 [2019-12-07 15:10:57,477 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 15:10:57,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2019-12-07 15:10:57,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 168. [2019-12-07 15:10:57,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2019-12-07 15:10:57,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 266 transitions. [2019-12-07 15:10:57,487 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 266 transitions. Word has length 23 [2019-12-07 15:10:57,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:10:57,487 INFO L462 AbstractCegarLoop]: Abstraction has 168 states and 266 transitions. [2019-12-07 15:10:57,487 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 15:10:57,487 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 266 transitions. [2019-12-07 15:10:57,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-12-07 15:10:57,488 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:10:57,488 INFO L410 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] [2019-12-07 15:10:57,488 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:10:57,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:10:57,489 INFO L82 PathProgramCache]: Analyzing trace with hash 69813308, now seen corresponding path program 1 times [2019-12-07 15:10:57,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:10:57,489 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6726886] [2019-12-07 15:10:57,489 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:10:57,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:10:57,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:10:57,520 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6726886] [2019-12-07 15:10:57,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:10:57,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 15:10:57,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300173807] [2019-12-07 15:10:57,521 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 15:10:57,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:10:57,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 15:10:57,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 15:10:57,521 INFO L87 Difference]: Start difference. First operand 168 states and 266 transitions. Second operand 3 states. [2019-12-07 15:10:57,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:10:57,604 INFO L93 Difference]: Finished difference Result 330 states and 523 transitions. [2019-12-07 15:10:57,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 15:10:57,605 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2019-12-07 15:10:57,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:10:57,606 INFO L225 Difference]: With dead ends: 330 [2019-12-07 15:10:57,606 INFO L226 Difference]: Without dead ends: 169 [2019-12-07 15:10:57,607 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 15:10:57,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2019-12-07 15:10:57,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2019-12-07 15:10:57,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2019-12-07 15:10:57,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 267 transitions. [2019-12-07 15:10:57,616 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 267 transitions. Word has length 23 [2019-12-07 15:10:57,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:10:57,617 INFO L462 AbstractCegarLoop]: Abstraction has 169 states and 267 transitions. [2019-12-07 15:10:57,617 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 15:10:57,617 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 267 transitions. [2019-12-07 15:10:57,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-12-07 15:10:57,618 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:10:57,618 INFO L410 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] [2019-12-07 15:10:57,618 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:10:57,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:10:57,618 INFO L82 PathProgramCache]: Analyzing trace with hash 173828051, now seen corresponding path program 1 times [2019-12-07 15:10:57,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:10:57,619 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176659609] [2019-12-07 15:10:57,619 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:10:57,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:10:57,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:10:57,643 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176659609] [2019-12-07 15:10:57,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:10:57,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 15:10:57,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791929505] [2019-12-07 15:10:57,644 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 15:10:57,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:10:57,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 15:10:57,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 15:10:57,645 INFO L87 Difference]: Start difference. First operand 169 states and 267 transitions. Second operand 3 states. [2019-12-07 15:10:57,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:10:57,728 INFO L93 Difference]: Finished difference Result 340 states and 535 transitions. [2019-12-07 15:10:57,729 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 15:10:57,729 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2019-12-07 15:10:57,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:10:57,730 INFO L225 Difference]: With dead ends: 340 [2019-12-07 15:10:57,730 INFO L226 Difference]: Without dead ends: 178 [2019-12-07 15:10:57,731 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 15:10:57,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2019-12-07 15:10:57,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2019-12-07 15:10:57,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2019-12-07 15:10:57,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 276 transitions. [2019-12-07 15:10:57,740 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 276 transitions. Word has length 24 [2019-12-07 15:10:57,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:10:57,740 INFO L462 AbstractCegarLoop]: Abstraction has 178 states and 276 transitions. [2019-12-07 15:10:57,740 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 15:10:57,740 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 276 transitions. [2019-12-07 15:10:57,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-12-07 15:10:57,741 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:10:57,741 INFO L410 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] [2019-12-07 15:10:57,741 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:10:57,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:10:57,741 INFO L82 PathProgramCache]: Analyzing trace with hash 57533382, now seen corresponding path program 1 times [2019-12-07 15:10:57,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:10:57,742 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537535520] [2019-12-07 15:10:57,742 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:10:57,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:10:57,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:10:57,764 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537535520] [2019-12-07 15:10:57,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:10:57,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 15:10:57,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136471378] [2019-12-07 15:10:57,764 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 15:10:57,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:10:57,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 15:10:57,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 15:10:57,765 INFO L87 Difference]: Start difference. First operand 178 states and 276 transitions. Second operand 3 states. [2019-12-07 15:10:57,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:10:57,850 INFO L93 Difference]: Finished difference Result 359 states and 553 transitions. [2019-12-07 15:10:57,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 15:10:57,850 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2019-12-07 15:10:57,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:10:57,852 INFO L225 Difference]: With dead ends: 359 [2019-12-07 15:10:57,852 INFO L226 Difference]: Without dead ends: 188 [2019-12-07 15:10:57,852 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 15:10:57,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2019-12-07 15:10:57,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 178. [2019-12-07 15:10:57,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2019-12-07 15:10:57,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 274 transitions. [2019-12-07 15:10:57,860 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 274 transitions. Word has length 25 [2019-12-07 15:10:57,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:10:57,860 INFO L462 AbstractCegarLoop]: Abstraction has 178 states and 274 transitions. [2019-12-07 15:10:57,860 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 15:10:57,860 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 274 transitions. [2019-12-07 15:10:57,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-12-07 15:10:57,861 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:10:57,861 INFO L410 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, 1] [2019-12-07 15:10:57,861 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:10:57,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:10:57,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1413165422, now seen corresponding path program 1 times [2019-12-07 15:10:57,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:10:57,862 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663347106] [2019-12-07 15:10:57,862 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:10:57,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:10:57,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:10:57,882 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663347106] [2019-12-07 15:10:57,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:10:57,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 15:10:57,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154064393] [2019-12-07 15:10:57,883 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 15:10:57,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:10:57,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 15:10:57,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 15:10:57,883 INFO L87 Difference]: Start difference. First operand 178 states and 274 transitions. Second operand 3 states. [2019-12-07 15:10:57,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:10:57,968 INFO L93 Difference]: Finished difference Result 359 states and 549 transitions. [2019-12-07 15:10:57,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 15:10:57,968 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2019-12-07 15:10:57,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:10:57,969 INFO L225 Difference]: With dead ends: 359 [2019-12-07 15:10:57,969 INFO L226 Difference]: Without dead ends: 188 [2019-12-07 15:10:57,970 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 15:10:57,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2019-12-07 15:10:57,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 178. [2019-12-07 15:10:57,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2019-12-07 15:10:57,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 272 transitions. [2019-12-07 15:10:57,975 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 272 transitions. Word has length 26 [2019-12-07 15:10:57,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:10:57,975 INFO L462 AbstractCegarLoop]: Abstraction has 178 states and 272 transitions. [2019-12-07 15:10:57,975 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 15:10:57,975 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 272 transitions. [2019-12-07 15:10:57,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-12-07 15:10:57,976 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:10:57,976 INFO L410 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, 1] [2019-12-07 15:10:57,976 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:10:57,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:10:57,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1880242814, now seen corresponding path program 1 times [2019-12-07 15:10:57,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:10:57,977 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618193947] [2019-12-07 15:10:57,977 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:10:57,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:10:57,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:10:58,016 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:10:58,016 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 15:10:58,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 03:10:58 BoogieIcfgContainer [2019-12-07 15:10:58,044 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 15:10:58,045 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 15:10:58,045 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 15:10:58,045 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 15:10:58,045 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:10:56" (3/4) ... [2019-12-07 15:10:58,046 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 15:10:58,092 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ad460ea0-8371-432a-9e21-1f722cbd92c6/bin/uautomizer/witness.graphml [2019-12-07 15:10:58,092 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 15:10:58,094 INFO L168 Benchmark]: Toolchain (without parser) took 1903.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.4 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -155.5 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:10:58,094 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:10:58,094 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.4 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -173.2 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. [2019-12-07 15:10:58,094 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.49 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:10:58,095 INFO L168 Benchmark]: Boogie Preprocessor took 25.20 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 15:10:58,095 INFO L168 Benchmark]: RCFGBuilder took 427.24 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 55.2 MB). Peak memory consumption was 55.2 MB. Max. memory is 11.5 GB. [2019-12-07 15:10:58,095 INFO L168 Benchmark]: TraceAbstraction took 1077.02 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -49.8 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:10:58,096 INFO L168 Benchmark]: Witness Printer took 47.81 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-12-07 15:10:58,097 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 283.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.4 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -173.2 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 39.49 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 25.20 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 427.24 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 55.2 MB). Peak memory consumption was 55.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1077.02 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -49.8 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 47.81 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 628]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L634] int s ; [L635] int tmp ; [L639] s = 8464 [L11] int s__info_callback = __VERIFIER_nondet_int() ; [L12] int s__in_handshake = __VERIFIER_nondet_int() ; [L13] int s__state ; [L14] int s__new_session ; [L15] int s__server ; [L16] int s__version = __VERIFIER_nondet_int() ; [L17] int s__type ; [L18] int s__init_num ; [L19] int s__hit = __VERIFIER_nondet_int() ; [L20] int s__rwstate ; [L21] int s__init_buf___0 = 1; [L22] int s__debug = __VERIFIER_nondet_int() ; [L23] int s__shutdown ; [L24] int s__cert = __VERIFIER_nondet_int() ; [L25] int s__options = __VERIFIER_nondet_int() ; [L26] int s__verify_mode = __VERIFIER_nondet_int() ; [L27] int s__session__peer = __VERIFIER_nondet_int() ; [L28] int s__cert__pkeys__AT0__privatekey = __VERIFIER_nondet_int() ; [L29] int s__ctx__info_callback = __VERIFIER_nondet_int() ; [L30] int s__ctx__stats__sess_accept_renegotiate = __VERIFIER_nondet_int() ; [L31] int s__ctx__stats__sess_accept = __VERIFIER_nondet_int() ; [L32] int s__ctx__stats__sess_accept_good = __VERIFIER_nondet_int() ; [L33] int s__s3__tmp__cert_request ; [L34] int s__s3__tmp__reuse_message ; [L35] int s__s3__tmp__use_rsa_tmp ; [L36] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int() ; [L37] int s__s3__tmp__new_cipher__algorithms ; [L38] int s__s3__tmp__next_state___0 ; [L39] int s__s3__tmp__new_cipher__algo_strength = __VERIFIER_nondet_int() ; [L40] int s__session__cipher ; [L41] int buf = __VERIFIER_nondet_int() ; [L42] unsigned long l ; [L43] unsigned long Time ; [L44] unsigned long tmp = __VERIFIER_nondet_long() ; [L45] int cb ; [L46] long num1 ; [L47] int ret ; [L48] int new_state ; [L49] int state ; [L50] int skip ; [L51] int got_new_session ; [L52] int tmp___1 = __VERIFIER_nondet_int() ; [L53] int tmp___2 = __VERIFIER_nondet_int() ; [L54] int tmp___3 ; [L55] int tmp___4 ; [L56] int tmp___5 ; [L57] int tmp___6 ; [L58] int tmp___7 ; [L59] long tmp___8 = __VERIFIER_nondet_long() ; [L60] int tmp___9 ; [L61] int tmp___10 ; [L62] int blastFlag ; [L63] int __cil_tmp55 ; [L64] unsigned long __cil_tmp56 ; [L65] unsigned long __cil_tmp57 ; [L66] unsigned long __cil_tmp58 ; [L67] unsigned long __cil_tmp59 ; [L68] int __cil_tmp60 ; [L69] unsigned long __cil_tmp61 ; [L72] s__s3__tmp__new_cipher__algorithms = 0 [L73] __cil_tmp56 = 0 [L74] __cil_tmp57 = 0 [L75] __cil_tmp58 = 0 [L76] __cil_tmp59 = 0 [L77] __cil_tmp60 = 0 [L78] __cil_tmp61 = 0 [L79] s__s3__tmp__reuse_message = 0 [L80] s__state = initial_state [L81] blastFlag = 0 [L82] Time = tmp [L83] cb = 0 [L84] ret = -1 [L85] skip = 0 [L86] got_new_session = 0 [L87] COND TRUE s__info_callback != 0 [L88] cb = s__info_callback [L94] s__in_handshake ++ [L95] COND FALSE !(tmp___1 + 12288) [L100] COND FALSE !(s__cert == 0) [L104] COND TRUE 1 [L106] state = s__state [L107] COND FALSE !(s__state == 12292) [L110] COND FALSE !(s__state == 16384) [L113] COND FALSE !(s__state == 8192) [L116] COND FALSE !(s__state == 24576) [L119] COND FALSE !(s__state == 8195) [L122] COND FALSE !(s__state == 8480) [L125] COND FALSE !(s__state == 8481) [L128] COND FALSE !(s__state == 8482) [L131] COND TRUE s__state == 8464 [L275] s__shutdown = 0 [L276] ret = __VERIFIER_nondet_int() [L277] COND TRUE blastFlag == 0 [L278] blastFlag = 1 [L280] COND FALSE !(ret <= 0) [L283] got_new_session = 1 [L284] s__state = 8496 [L285] s__init_num = 0 [L591] COND TRUE ! s__s3__tmp__reuse_message [L592] COND TRUE ! skip [L593] COND TRUE state == 8464 [L594] COND TRUE s__state == 8496 [L595] COND TRUE cb != 0 [L596] COND TRUE s__info_callback != 0 [L628] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 146 locations, 1 error locations. Result: UNSAFE, OverallTime: 1.0s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 840 SDtfs, 1058 SDslu, 120 SDs, 0 SdLazy, 496 SolverSat, 176 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=178occurred 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, 6 MinimizatonAttempts, 24 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 169 NumberOfCodeBlocks, 169 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 137 ConstructedInterpolants, 0 QuantifiedInterpolants, 7411 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...