./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/s3_clnt_1.BV.c.cil-2a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_40eacc9a-e16d-420e-8ed6-4291c6ea4bb2/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_40eacc9a-e16d-420e-8ed6-4291c6ea4bb2/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_40eacc9a-e16d-420e-8ed6-4291c6ea4bb2/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_40eacc9a-e16d-420e-8ed6-4291c6ea4bb2/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/s3_clnt_1.BV.c.cil-2a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_40eacc9a-e16d-420e-8ed6-4291c6ea4bb2/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_40eacc9a-e16d-420e-8ed6-4291c6ea4bb2/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 8f0681106713dda8f6af7535e98def966db59035 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_40eacc9a-e16d-420e-8ed6-4291c6ea4bb2/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_40eacc9a-e16d-420e-8ed6-4291c6ea4bb2/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_40eacc9a-e16d-420e-8ed6-4291c6ea4bb2/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_40eacc9a-e16d-420e-8ed6-4291c6ea4bb2/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/s3_clnt_1.BV.c.cil-2a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_40eacc9a-e16d-420e-8ed6-4291c6ea4bb2/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_40eacc9a-e16d-420e-8ed6-4291c6ea4bb2/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 8f0681106713dda8f6af7535e98def966db59035 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.24-cad4683 [2019-11-15 23:47:24,199 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 23:47:24,200 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 23:47:24,210 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 23:47:24,210 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 23:47:24,213 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 23:47:24,215 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 23:47:24,216 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 23:47:24,218 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 23:47:24,219 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 23:47:24,220 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 23:47:24,221 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 23:47:24,221 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 23:47:24,222 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 23:47:24,223 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 23:47:24,224 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 23:47:24,224 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 23:47:24,225 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 23:47:24,227 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 23:47:24,229 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 23:47:24,231 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 23:47:24,232 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 23:47:24,233 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 23:47:24,234 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 23:47:24,237 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 23:47:24,237 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 23:47:24,237 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 23:47:24,238 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 23:47:24,238 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 23:47:24,240 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 23:47:24,240 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 23:47:24,241 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 23:47:24,241 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 23:47:24,242 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 23:47:24,243 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 23:47:24,244 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 23:47:24,244 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 23:47:24,244 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 23:47:24,245 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 23:47:24,246 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 23:47:24,246 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 23:47:24,247 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_40eacc9a-e16d-420e-8ed6-4291c6ea4bb2/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-15 23:47:24,260 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 23:47:24,260 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 23:47:24,262 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 23:47:24,262 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 23:47:24,262 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 23:47:24,262 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 23:47:24,263 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 23:47:24,263 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 23:47:24,263 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 23:47:24,263 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 23:47:24,264 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 23:47:24,264 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 23:47:24,264 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 23:47:24,264 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 23:47:24,265 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 23:47:24,265 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 23:47:24,265 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 23:47:24,266 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 23:47:24,266 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 23:47:24,266 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 23:47:24,266 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 23:47:24,267 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 23:47:24,267 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 23:47:24,267 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 23:47:24,267 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 23:47:24,268 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 23:47:24,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 23:47:24,268 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 23:47:24,268 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_40eacc9a-e16d-420e-8ed6-4291c6ea4bb2/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 -> 8f0681106713dda8f6af7535e98def966db59035 [2019-11-15 23:47:24,303 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 23:47:24,313 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 23:47:24,316 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 23:47:24,317 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 23:47:24,318 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 23:47:24,318 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_40eacc9a-e16d-420e-8ed6-4291c6ea4bb2/bin/uautomizer/../../sv-benchmarks/c/bitvector/s3_clnt_1.BV.c.cil-2a.c [2019-11-15 23:47:24,369 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_40eacc9a-e16d-420e-8ed6-4291c6ea4bb2/bin/uautomizer/data/4fd955a45/a47c036eefd84843bf3064b47f511c97/FLAGe61e94813 [2019-11-15 23:47:24,771 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 23:47:24,776 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_40eacc9a-e16d-420e-8ed6-4291c6ea4bb2/sv-benchmarks/c/bitvector/s3_clnt_1.BV.c.cil-2a.c [2019-11-15 23:47:24,795 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_40eacc9a-e16d-420e-8ed6-4291c6ea4bb2/bin/uautomizer/data/4fd955a45/a47c036eefd84843bf3064b47f511c97/FLAGe61e94813 [2019-11-15 23:47:25,091 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_40eacc9a-e16d-420e-8ed6-4291c6ea4bb2/bin/uautomizer/data/4fd955a45/a47c036eefd84843bf3064b47f511c97 [2019-11-15 23:47:25,093 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 23:47:25,094 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 23:47:25,096 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 23:47:25,096 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 23:47:25,099 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 23:47:25,100 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:47:25" (1/1) ... [2019-11-15 23:47:25,103 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2783558f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:47:25, skipping insertion in model container [2019-11-15 23:47:25,103 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:47:25" (1/1) ... [2019-11-15 23:47:25,110 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 23:47:25,164 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 23:47:25,488 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:47:25,494 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 23:47:25,556 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:47:25,567 INFO L192 MainTranslator]: Completed translation [2019-11-15 23:47:25,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:47:25 WrapperNode [2019-11-15 23:47:25,568 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 23:47:25,569 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 23:47:25,569 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 23:47:25,569 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 23:47:25,577 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:47:25" (1/1) ... [2019-11-15 23:47:25,586 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:47:25" (1/1) ... [2019-11-15 23:47:25,621 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 23:47:25,622 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 23:47:25,622 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 23:47:25,622 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 23:47:25,629 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:47:25" (1/1) ... [2019-11-15 23:47:25,629 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:47:25" (1/1) ... [2019-11-15 23:47:25,632 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:47:25" (1/1) ... [2019-11-15 23:47:25,632 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:47:25" (1/1) ... [2019-11-15 23:47:25,640 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:47:25" (1/1) ... [2019-11-15 23:47:25,647 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:47:25" (1/1) ... [2019-11-15 23:47:25,650 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:47:25" (1/1) ... [2019-11-15 23:47:25,654 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 23:47:25,655 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 23:47:25,655 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 23:47:25,655 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 23:47:25,656 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:47:25" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40eacc9a-e16d-420e-8ed6-4291c6ea4bb2/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 [2019-11-15 23:47:25,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 23:47:25,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 23:47:25,830 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-15 23:47:26,466 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2019-11-15 23:47:26,466 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2019-11-15 23:47:26,471 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 23:47:26,472 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-15 23:47:26,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:47:26 BoogieIcfgContainer [2019-11-15 23:47:26,473 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 23:47:26,474 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 23:47:26,474 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 23:47:26,489 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 23:47:26,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 11:47:25" (1/3) ... [2019-11-15 23:47:26,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f12cd13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:47:26, skipping insertion in model container [2019-11-15 23:47:26,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:47:25" (2/3) ... [2019-11-15 23:47:26,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f12cd13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:47:26, skipping insertion in model container [2019-11-15 23:47:26,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:47:26" (3/3) ... [2019-11-15 23:47:26,492 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_clnt_1.BV.c.cil-2a.c [2019-11-15 23:47:26,501 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 23:47:26,507 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-15 23:47:26,517 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-15 23:47:26,538 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 23:47:26,538 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 23:47:26,539 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 23:47:26,539 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 23:47:26,539 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 23:47:26,539 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 23:47:26,539 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 23:47:26,539 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 23:47:26,555 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states. [2019-11-15 23:47:26,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-15 23:47:26,561 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:47:26,562 INFO L380 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] [2019-11-15 23:47:26,564 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:47:26,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:47:26,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1449582915, now seen corresponding path program 1 times [2019-11-15 23:47:26,573 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:47:26,574 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323000052] [2019-11-15 23:47:26,574 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:47:26,574 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:47:26,574 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:47:26,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:47:26,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:47:26,741 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323000052] [2019-11-15 23:47:26,741 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:47:26,741 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-15 23:47:26,742 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401795308] [2019-11-15 23:47:26,747 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 23:47:26,748 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:47:26,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 23:47:26,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 23:47:26,763 INFO L87 Difference]: Start difference. First operand 125 states. Second operand 3 states. [2019-11-15 23:47:26,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:47:26,959 INFO L93 Difference]: Finished difference Result 247 states and 422 transitions. [2019-11-15 23:47:26,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 23:47:26,961 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2019-11-15 23:47:26,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:47:26,970 INFO L225 Difference]: With dead ends: 247 [2019-11-15 23:47:26,970 INFO L226 Difference]: Without dead ends: 112 [2019-11-15 23:47:26,973 INFO L600 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 [2019-11-15 23:47:26,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2019-11-15 23:47:27,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2019-11-15 23:47:27,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2019-11-15 23:47:27,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 169 transitions. [2019-11-15 23:47:27,015 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 169 transitions. Word has length 23 [2019-11-15 23:47:27,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:47:27,015 INFO L462 AbstractCegarLoop]: Abstraction has 112 states and 169 transitions. [2019-11-15 23:47:27,015 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 23:47:27,015 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 169 transitions. [2019-11-15 23:47:27,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-11-15 23:47:27,017 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:47:27,017 INFO L380 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] [2019-11-15 23:47:27,017 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:47:27,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:47:27,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1463943324, now seen corresponding path program 1 times [2019-11-15 23:47:27,018 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:47:27,018 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902896355] [2019-11-15 23:47:27,018 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:47:27,019 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:47:27,019 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:47:27,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:47:27,098 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:47:27,099 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902896355] [2019-11-15 23:47:27,099 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:47:27,099 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 23:47:27,099 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163478408] [2019-11-15 23:47:27,101 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 23:47:27,101 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:47:27,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 23:47:27,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 23:47:27,101 INFO L87 Difference]: Start difference. First operand 112 states and 169 transitions. Second operand 3 states. [2019-11-15 23:47:27,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:47:27,331 INFO L93 Difference]: Finished difference Result 233 states and 355 transitions. [2019-11-15 23:47:27,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 23:47:27,332 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2019-11-15 23:47:27,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:47:27,334 INFO L225 Difference]: With dead ends: 233 [2019-11-15 23:47:27,334 INFO L226 Difference]: Without dead ends: 130 [2019-11-15 23:47:27,335 INFO L600 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 [2019-11-15 23:47:27,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2019-11-15 23:47:27,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 127. [2019-11-15 23:47:27,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2019-11-15 23:47:27,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 189 transitions. [2019-11-15 23:47:27,362 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 189 transitions. Word has length 36 [2019-11-15 23:47:27,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:47:27,362 INFO L462 AbstractCegarLoop]: Abstraction has 127 states and 189 transitions. [2019-11-15 23:47:27,362 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 23:47:27,363 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 189 transitions. [2019-11-15 23:47:27,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-11-15 23:47:27,367 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:47:27,367 INFO L380 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] [2019-11-15 23:47:27,368 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:47:27,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:47:27,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1876827341, now seen corresponding path program 1 times [2019-11-15 23:47:27,370 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:47:27,370 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603048409] [2019-11-15 23:47:27,370 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:47:27,370 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:47:27,371 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:47:27,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:47:27,448 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-15 23:47:27,448 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603048409] [2019-11-15 23:47:27,448 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:47:27,448 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 23:47:27,449 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299181870] [2019-11-15 23:47:27,449 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 23:47:27,449 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:47:27,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 23:47:27,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 23:47:27,450 INFO L87 Difference]: Start difference. First operand 127 states and 189 transitions. Second operand 3 states. [2019-11-15 23:47:27,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:47:27,633 INFO L93 Difference]: Finished difference Result 266 states and 401 transitions. [2019-11-15 23:47:27,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 23:47:27,634 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2019-11-15 23:47:27,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:47:27,636 INFO L225 Difference]: With dead ends: 266 [2019-11-15 23:47:27,636 INFO L226 Difference]: Without dead ends: 148 [2019-11-15 23:47:27,637 INFO L600 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 [2019-11-15 23:47:27,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2019-11-15 23:47:27,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 144. [2019-11-15 23:47:27,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2019-11-15 23:47:27,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 211 transitions. [2019-11-15 23:47:27,648 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 211 transitions. Word has length 50 [2019-11-15 23:47:27,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:47:27,648 INFO L462 AbstractCegarLoop]: Abstraction has 144 states and 211 transitions. [2019-11-15 23:47:27,648 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 23:47:27,649 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 211 transitions. [2019-11-15 23:47:27,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-11-15 23:47:27,650 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:47:27,650 INFO L380 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] [2019-11-15 23:47:27,650 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:47:27,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:47:27,651 INFO L82 PathProgramCache]: Analyzing trace with hash -708368503, now seen corresponding path program 1 times [2019-11-15 23:47:27,651 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:47:27,651 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476014169] [2019-11-15 23:47:27,651 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:47:27,651 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:47:27,652 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:47:27,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:47:27,745 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-15 23:47:27,746 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476014169] [2019-11-15 23:47:27,747 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:47:27,748 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 23:47:27,748 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429383788] [2019-11-15 23:47:27,750 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 23:47:27,750 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:47:27,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 23:47:27,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 23:47:27,751 INFO L87 Difference]: Start difference. First operand 144 states and 211 transitions. Second operand 3 states. [2019-11-15 23:47:27,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:47:27,978 INFO L93 Difference]: Finished difference Result 330 states and 498 transitions. [2019-11-15 23:47:27,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 23:47:27,978 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2019-11-15 23:47:27,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:47:27,981 INFO L225 Difference]: With dead ends: 330 [2019-11-15 23:47:27,981 INFO L226 Difference]: Without dead ends: 194 [2019-11-15 23:47:27,982 INFO L600 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 [2019-11-15 23:47:27,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2019-11-15 23:47:28,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 185. [2019-11-15 23:47:28,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2019-11-15 23:47:28,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 261 transitions. [2019-11-15 23:47:28,009 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 261 transitions. Word has length 67 [2019-11-15 23:47:28,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:47:28,012 INFO L462 AbstractCegarLoop]: Abstraction has 185 states and 261 transitions. [2019-11-15 23:47:28,012 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 23:47:28,012 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 261 transitions. [2019-11-15 23:47:28,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-11-15 23:47:28,018 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:47:28,019 INFO L380 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] [2019-11-15 23:47:28,019 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:47:28,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:47:28,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1781160459, now seen corresponding path program 1 times [2019-11-15 23:47:28,021 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:47:28,021 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202752108] [2019-11-15 23:47:28,021 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:47:28,021 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:47:28,022 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:47:28,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:47:28,107 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-15 23:47:28,107 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202752108] [2019-11-15 23:47:28,108 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:47:28,108 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 23:47:28,108 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956173060] [2019-11-15 23:47:28,109 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 23:47:28,109 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:47:28,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 23:47:28,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 23:47:28,110 INFO L87 Difference]: Start difference. First operand 185 states and 261 transitions. Second operand 3 states. [2019-11-15 23:47:28,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:47:28,248 INFO L93 Difference]: Finished difference Result 384 states and 549 transitions. [2019-11-15 23:47:28,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 23:47:28,249 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2019-11-15 23:47:28,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:47:28,251 INFO L225 Difference]: With dead ends: 384 [2019-11-15 23:47:28,251 INFO L226 Difference]: Without dead ends: 208 [2019-11-15 23:47:28,252 INFO L600 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 [2019-11-15 23:47:28,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2019-11-15 23:47:28,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 204. [2019-11-15 23:47:28,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2019-11-15 23:47:28,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 285 transitions. [2019-11-15 23:47:28,265 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 285 transitions. Word has length 67 [2019-11-15 23:47:28,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:47:28,265 INFO L462 AbstractCegarLoop]: Abstraction has 204 states and 285 transitions. [2019-11-15 23:47:28,265 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 23:47:28,266 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 285 transitions. [2019-11-15 23:47:28,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-11-15 23:47:28,267 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:47:28,267 INFO L380 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] [2019-11-15 23:47:28,268 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:47:28,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:47:28,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1647185185, now seen corresponding path program 1 times [2019-11-15 23:47:28,268 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:47:28,269 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583546356] [2019-11-15 23:47:28,269 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:47:28,269 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:47:28,269 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:47:28,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:47:28,330 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-11-15 23:47:28,331 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583546356] [2019-11-15 23:47:28,332 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:47:28,332 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 23:47:28,332 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633246072] [2019-11-15 23:47:28,333 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 23:47:28,333 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:47:28,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 23:47:28,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 23:47:28,335 INFO L87 Difference]: Start difference. First operand 204 states and 285 transitions. Second operand 3 states. [2019-11-15 23:47:28,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:47:28,510 INFO L93 Difference]: Finished difference Result 423 states and 599 transitions. [2019-11-15 23:47:28,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 23:47:28,510 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2019-11-15 23:47:28,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:47:28,512 INFO L225 Difference]: With dead ends: 423 [2019-11-15 23:47:28,512 INFO L226 Difference]: Without dead ends: 228 [2019-11-15 23:47:28,513 INFO L600 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 [2019-11-15 23:47:28,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2019-11-15 23:47:28,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 225. [2019-11-15 23:47:28,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2019-11-15 23:47:28,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 311 transitions. [2019-11-15 23:47:28,522 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 311 transitions. Word has length 83 [2019-11-15 23:47:28,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:47:28,523 INFO L462 AbstractCegarLoop]: Abstraction has 225 states and 311 transitions. [2019-11-15 23:47:28,523 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 23:47:28,523 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 311 transitions. [2019-11-15 23:47:28,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-11-15 23:47:28,524 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:47:28,525 INFO L380 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] [2019-11-15 23:47:28,525 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:47:28,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:47:28,525 INFO L82 PathProgramCache]: Analyzing trace with hash -629532647, now seen corresponding path program 1 times [2019-11-15 23:47:28,525 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:47:28,525 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142398192] [2019-11-15 23:47:28,526 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:47:28,526 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:47:28,526 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:47:28,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:47:28,584 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-15 23:47:28,585 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142398192] [2019-11-15 23:47:28,585 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:47:28,585 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 23:47:28,585 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318572987] [2019-11-15 23:47:28,586 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 23:47:28,586 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:47:28,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 23:47:28,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 23:47:28,587 INFO L87 Difference]: Start difference. First operand 225 states and 311 transitions. Second operand 3 states. [2019-11-15 23:47:28,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:47:28,636 INFO L93 Difference]: Finished difference Result 655 states and 906 transitions. [2019-11-15 23:47:28,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 23:47:28,636 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2019-11-15 23:47:28,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:47:28,640 INFO L225 Difference]: With dead ends: 655 [2019-11-15 23:47:28,640 INFO L226 Difference]: Without dead ends: 439 [2019-11-15 23:47:28,641 INFO L600 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 [2019-11-15 23:47:28,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2019-11-15 23:47:28,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 439. [2019-11-15 23:47:28,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 439 states. [2019-11-15 23:47:28,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 605 transitions. [2019-11-15 23:47:28,655 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 605 transitions. Word has length 103 [2019-11-15 23:47:28,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:47:28,656 INFO L462 AbstractCegarLoop]: Abstraction has 439 states and 605 transitions. [2019-11-15 23:47:28,656 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 23:47:28,656 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 605 transitions. [2019-11-15 23:47:28,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-11-15 23:47:28,657 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:47:28,658 INFO L380 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, 1] [2019-11-15 23:47:28,658 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:47:28,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:47:28,658 INFO L82 PathProgramCache]: Analyzing trace with hash -548026749, now seen corresponding path program 1 times [2019-11-15 23:47:28,658 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:47:28,658 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48099663] [2019-11-15 23:47:28,659 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:47:28,659 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:47:28,659 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:47:28,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:47:28,713 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2019-11-15 23:47:28,713 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48099663] [2019-11-15 23:47:28,713 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:47:28,713 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 23:47:28,713 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219722] [2019-11-15 23:47:28,714 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 23:47:28,714 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:47:28,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 23:47:28,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 23:47:28,715 INFO L87 Difference]: Start difference. First operand 439 states and 605 transitions. Second operand 3 states. [2019-11-15 23:47:28,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:47:28,750 INFO L93 Difference]: Finished difference Result 655 states and 903 transitions. [2019-11-15 23:47:28,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 23:47:28,751 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2019-11-15 23:47:28,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:47:28,756 INFO L225 Difference]: With dead ends: 655 [2019-11-15 23:47:28,757 INFO L226 Difference]: Without dead ends: 653 [2019-11-15 23:47:28,758 INFO L600 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 [2019-11-15 23:47:28,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2019-11-15 23:47:28,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 653. [2019-11-15 23:47:28,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 653 states. [2019-11-15 23:47:28,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 901 transitions. [2019-11-15 23:47:28,782 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 901 transitions. Word has length 105 [2019-11-15 23:47:28,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:47:28,784 INFO L462 AbstractCegarLoop]: Abstraction has 653 states and 901 transitions. [2019-11-15 23:47:28,784 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 23:47:28,784 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 901 transitions. [2019-11-15 23:47:28,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-11-15 23:47:28,786 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:47:28,786 INFO L380 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:47:28,787 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:47:28,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:47:28,787 INFO L82 PathProgramCache]: Analyzing trace with hash 51406530, now seen corresponding path program 1 times [2019-11-15 23:47:28,787 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:47:28,788 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41591787] [2019-11-15 23:47:28,788 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:47:28,788 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:47:28,788 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:47:28,809 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-15 23:47:28,810 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [87798034] [2019-11-15 23:47:28,810 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40eacc9a-e16d-420e-8ed6-4291c6ea4bb2/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:47:28,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:47:28,915 INFO L256 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-15 23:47:28,925 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:47:28,951 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2019-11-15 23:47:28,951 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41591787] [2019-11-15 23:47:28,951 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-15 23:47:28,952 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87798034] [2019-11-15 23:47:28,952 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:47:28,952 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 23:47:28,952 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555210967] [2019-11-15 23:47:28,953 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 23:47:28,953 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:47:28,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 23:47:28,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 23:47:28,953 INFO L87 Difference]: Start difference. First operand 653 states and 901 transitions. Second operand 3 states. [2019-11-15 23:47:29,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:47:29,106 INFO L93 Difference]: Finished difference Result 1377 states and 1926 transitions. [2019-11-15 23:47:29,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 23:47:29,107 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 130 [2019-11-15 23:47:29,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:47:29,111 INFO L225 Difference]: With dead ends: 1377 [2019-11-15 23:47:29,112 INFO L226 Difference]: Without dead ends: 733 [2019-11-15 23:47:29,113 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 23:47:29,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2019-11-15 23:47:29,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 722. [2019-11-15 23:47:29,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 722 states. [2019-11-15 23:47:29,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 985 transitions. [2019-11-15 23:47:29,136 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 985 transitions. Word has length 130 [2019-11-15 23:47:29,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:47:29,137 INFO L462 AbstractCegarLoop]: Abstraction has 722 states and 985 transitions. [2019-11-15 23:47:29,137 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 23:47:29,137 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 985 transitions. [2019-11-15 23:47:29,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2019-11-15 23:47:29,139 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:47:29,140 INFO L380 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:47:29,347 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:47:29,348 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:47:29,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:47:29,348 INFO L82 PathProgramCache]: Analyzing trace with hash -837503083, now seen corresponding path program 1 times [2019-11-15 23:47:29,348 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:47:29,349 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783460] [2019-11-15 23:47:29,349 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:47:29,349 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:47:29,349 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:47:29,362 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-15 23:47:29,362 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [829567169] [2019-11-15 23:47:29,362 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40eacc9a-e16d-420e-8ed6-4291c6ea4bb2/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:47:29,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:47:29,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:47:29,705 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:47:29,705 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-11-15 23:47:29,915 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:47:29,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 11:47:29 BoogieIcfgContainer [2019-11-15 23:47:29,990 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 23:47:29,990 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 23:47:29,990 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 23:47:29,990 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 23:47:29,991 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:47:26" (3/4) ... [2019-11-15 23:47:29,993 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-15 23:47:29,993 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 23:47:29,995 INFO L168 Benchmark]: Toolchain (without parser) took 4900.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 944.8 MB in the beginning and 901.8 MB in the end (delta: 43.0 MB). Peak memory consumption was 176.7 MB. Max. memory is 11.5 GB. [2019-11-15 23:47:29,995 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 962.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:47:29,996 INFO L168 Benchmark]: CACSL2BoogieTranslator took 472.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -178.3 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-11-15 23:47:29,996 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.66 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. [2019-11-15 23:47:29,997 INFO L168 Benchmark]: Boogie Preprocessor took 33.08 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. [2019-11-15 23:47:29,997 INFO L168 Benchmark]: RCFGBuilder took 818.29 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: 50.6 MB). Peak memory consumption was 50.6 MB. Max. memory is 11.5 GB. [2019-11-15 23:47:29,998 INFO L168 Benchmark]: TraceAbstraction took 3515.89 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 901.8 MB in the end (delta: 165.3 MB). Peak memory consumption was 165.3 MB. Max. memory is 11.5 GB. [2019-11-15 23:47:29,998 INFO L168 Benchmark]: Witness Printer took 3.36 ms. Allocated memory is still 1.2 GB. Free memory is still 901.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:47:30,001 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 962.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 472.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -178.3 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 52.66 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 33.08 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 818.29 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: 50.6 MB). Peak memory consumption was 50.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3515.89 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 901.8 MB in the end (delta: 165.3 MB). Peak memory consumption was 165.3 MB. Max. memory is 11.5 GB. * Witness Printer took 3.36 ms. Allocated memory is still 1.2 GB. Free memory is still 901.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 619]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseAnd at line 219. Possible FailurePath: [L628] int __retres1 ; [L9] int s__info_callback = __VERIFIER_nondet_int(); [L10] unsigned int s__in_handshake = __VERIFIER_nondet_uint(); [L11] int s__state ; [L12] int s__new_session ; [L13] int s__server ; [L14] int s__version = __VERIFIER_nondet_int(); [L15] int s__type ; [L16] int s__init_num ; [L17] int s__bbio = __VERIFIER_nondet_int(); [L18] int s__wbio = __VERIFIER_nondet_int(); [L19] int s__hit = __VERIFIER_nondet_int(); [L20] int s__rwstate ; [L21] int s__init_buf___0 ; [L22] int s__debug = __VERIFIER_nondet_int(); [L23] int s__shutdown ; [L24] int s__ctx__info_callback = __VERIFIER_nondet_int(); [L25] unsigned int s__ctx__stats__sess_connect_renegotiate ; [L26] unsigned int s__ctx__stats__sess_connect ; [L27] int s__ctx__stats__sess_hit = __VERIFIER_nondet_int(); [L28] int s__ctx__stats__sess_connect_good = __VERIFIER_nondet_int(); [L29] int s__s3__change_cipher_spec ; [L30] int s__s3__flags ; [L31] int s__s3__delay_buf_pop_ret ; [L32] int s__s3__tmp__cert_req = __VERIFIER_nondet_int(); [L33] int s__s3__tmp__new_compression = __VERIFIER_nondet_int(); [L34] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int(); [L35] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int(); [L36] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int(); [L37] int s__s3__tmp__next_state___0 ; [L38] int s__s3__tmp__new_compression__id = __VERIFIER_nondet_int(); [L39] int s__session__cipher ; [L40] int s__session__compress_meth ; [L41] int buf ; [L42] unsigned long tmp ; [L43] unsigned long l ; [L44] int num1 ; [L45] int cb ; [L46] int ret ; [L47] int new_state ; [L48] int state ; [L49] int skip ; [L50] int tmp___0 ; [L51] int tmp___1 ; [L52] int tmp___2 ; [L53] int tmp___3 ; [L54] int tmp___4 ; [L55] int tmp___5 ; [L56] int tmp___6 = __VERIFIER_nondet_int(); [L57] int tmp___7 = __VERIFIER_nondet_int(); [L58] int tmp___8 = __VERIFIER_nondet_int(); [L59] int tmp___9 = __VERIFIER_nondet_int(); [L60] int blastFlag ; [L61] int ag_X ; [L62] int ag_Y ; [L63] int ag_Z = __VERIFIER_nondet_int(); [L64] unsigned int ag_V ; [L65] unsigned int ag_W ; [L66] int __retres62 ; [L69] ag_V = 2U [L70] ag_W = 5U [L71] s__state = 12292 [L72] blastFlag = 0 [L73] tmp = __VERIFIER_nondet_int() [L74] cb = 0 [L75] ret = -1 [L76] skip = 0 [L77] tmp___0 = 0 [L78] COND TRUE s__info_callback != 0 [L79] cb = s__info_callback [L87] s__in_handshake = s__in_handshake + 1 [L88] tmp___1 = __VERIFIER_nondet_int() [L89] COND FALSE !(tmp___1 & 12288) [L100] COND TRUE 1 [L102] state = s__state [L103] COND TRUE s__state == 12292 [L206] s__new_session = 1 [L207] s__state = 4096 [L208] s__ctx__stats__sess_connect_renegotiate = s__ctx__stats__sess_connect_renegotiate + 1 [L213] s__server = 0 [L214] COND TRUE cb != 0 [L219] COND FALSE !((s__version & 65280) != 768) [L225] s__type = 4096 [L226] COND FALSE !(s__init_buf___0 == 0) [L245] tmp___4 = __VERIFIER_nondet_int() [L246] COND FALSE !(! tmp___4) [L252] tmp___5 = __VERIFIER_nondet_int() [L253] COND FALSE !(! tmp___5) [L259] s__state = 4368 [L260] s__ctx__stats__sess_connect = s__ctx__stats__sess_connect + 1 [L261] s__init_num = 0 [L577] COND FALSE !(! s__s3__tmp__reuse_message) [L606] skip = 0 [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 4096) [L112] COND FALSE !(s__state == 20480) [L115] COND FALSE !(s__state == 4099) [L118] COND TRUE s__state == 4368 [L265] s__shutdown = 0 [L266] ret = __VERIFIER_nondet_int() [L267] COND TRUE blastFlag == 0 [L268] blastFlag = 1 [L272] COND FALSE !(ret <= 0) [L277] s__state = 4384 [L278] s__init_num = 0 [L279] COND TRUE s__bbio != s__wbio [L577] COND FALSE !(! s__s3__tmp__reuse_message) [L606] skip = 0 [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 4096) [L112] COND FALSE !(s__state == 20480) [L115] COND FALSE !(s__state == 4099) [L118] COND FALSE !(s__state == 4368) [L121] COND FALSE !(s__state == 4369) [L124] COND TRUE s__state == 4384 [L287] ret = __VERIFIER_nondet_int() [L288] COND TRUE blastFlag == 1 [L289] blastFlag = 2 [L293] COND FALSE !(ret <= 0) [L298] COND FALSE !(\read(s__hit)) [L301] s__state = 4400 [L303] s__init_num = 0 [L577] COND FALSE !(! s__s3__tmp__reuse_message) [L606] skip = 0 [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 4096) [L112] COND FALSE !(s__state == 20480) [L115] COND FALSE !(s__state == 4099) [L118] COND FALSE !(s__state == 4368) [L121] COND FALSE !(s__state == 4369) [L124] COND FALSE !(s__state == 4384) [L127] COND FALSE !(s__state == 4385) [L130] COND TRUE s__state == 4400 [L307] COND FALSE !(s__s3__tmp__new_cipher__algorithms - 256) [L310] ret = __VERIFIER_nondet_int() [L311] COND TRUE blastFlag == 2 [L312] blastFlag = 3 [L316] COND FALSE !(ret <= 0) [L322] s__state = 4416 [L323] s__init_num = 0 [L577] COND FALSE !(! s__s3__tmp__reuse_message) [L606] skip = 0 [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 4096) [L112] COND FALSE !(s__state == 20480) [L115] COND FALSE !(s__state == 4099) [L118] COND FALSE !(s__state == 4368) [L121] COND FALSE !(s__state == 4369) [L124] COND FALSE !(s__state == 4384) [L127] COND FALSE !(s__state == 4385) [L130] COND FALSE !(s__state == 4400) [L133] COND FALSE !(s__state == 4401) [L136] COND TRUE s__state == 4416 [L327] ret = __VERIFIER_nondet_int() [L328] COND TRUE blastFlag == 3 [L329] blastFlag = 4 [L333] COND FALSE !(ret <= 0) [L338] s__state = 4432 [L339] s__init_num = 0 [L340] COND FALSE !(! tmp___6) [L577] COND FALSE !(! s__s3__tmp__reuse_message) [L606] skip = 0 [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 4096) [L112] COND FALSE !(s__state == 20480) [L115] COND FALSE !(s__state == 4099) [L118] COND FALSE !(s__state == 4368) [L121] COND FALSE !(s__state == 4369) [L124] COND FALSE !(s__state == 4384) [L127] COND FALSE !(s__state == 4385) [L130] COND FALSE !(s__state == 4400) [L133] COND FALSE !(s__state == 4401) [L136] COND FALSE !(s__state == 4416) [L139] COND FALSE !(s__state == 4417) [L142] COND TRUE s__state == 4432 [L349] ret = __VERIFIER_nondet_int() [L350] COND FALSE !(blastFlag == 5) [L355] COND FALSE !(ret <= 0) [L360] s__state = 4448 [L361] ag_X = 44 [L362] ag_Y = 100 [L363] s__init_num = 0 [L577] COND FALSE !(! s__s3__tmp__reuse_message) [L606] skip = 0 [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 4096) [L112] COND FALSE !(s__state == 20480) [L115] COND FALSE !(s__state == 4099) [L118] COND FALSE !(s__state == 4368) [L121] COND FALSE !(s__state == 4369) [L124] COND FALSE !(s__state == 4384) [L127] COND FALSE !(s__state == 4385) [L130] COND FALSE !(s__state == 4400) [L133] COND FALSE !(s__state == 4401) [L136] COND FALSE !(s__state == 4416) [L139] COND FALSE !(s__state == 4417) [L142] COND FALSE !(s__state == 4432) [L145] COND FALSE !(s__state == 4433) [L148] COND TRUE s__state == 4448 [L367] ret = __VERIFIER_nondet_int() [L368] COND TRUE blastFlag == 4 [L369] blastFlag = 5 [L373] COND FALSE !(ret <= 0) [L378] COND TRUE \read(s__s3__tmp__cert_req) [L379] s__state = ag_X * ag_Y + ag_Z [L383] s__init_num = 0 [L577] COND FALSE !(! s__s3__tmp__reuse_message) [L606] skip = 0 [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 4096) [L112] COND FALSE !(s__state == 20480) [L115] COND FALSE !(s__state == 4099) [L118] COND FALSE !(s__state == 4368) [L121] COND FALSE !(s__state == 4369) [L124] COND FALSE !(s__state == 4384) [L127] COND FALSE !(s__state == 4385) [L130] COND FALSE !(s__state == 4400) [L133] COND FALSE !(s__state == 4401) [L136] COND FALSE !(s__state == 4416) [L139] COND FALSE !(s__state == 4417) [L142] COND TRUE s__state == 4432 [L349] ret = __VERIFIER_nondet_int() [L350] COND TRUE blastFlag == 5 [L619] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 125 locations, 1 error locations. Result: UNSAFE, OverallTime: 3.4s, OverallIterations: 10, TraceHistogramMax: 8, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 1540 SDtfs, 402 SDslu, 859 SDs, 0 SdLazy, 738 SolverSat, 101 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 152 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=722occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 34 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 815 NumberOfCodeBlocks, 815 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 655 ConstructedInterpolants, 0 QuantifiedInterpolants, 83783 SizeOfPredicates, 0 NumberOfNonLiveVariables, 336 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 659/659 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-cad4683 [2019-11-15 23:47:32,095 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 23:47:32,097 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 23:47:32,107 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 23:47:32,107 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 23:47:32,108 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 23:47:32,109 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 23:47:32,111 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 23:47:32,112 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 23:47:32,113 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 23:47:32,114 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 23:47:32,115 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 23:47:32,115 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 23:47:32,116 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 23:47:32,117 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 23:47:32,118 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 23:47:32,118 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 23:47:32,119 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 23:47:32,121 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 23:47:32,122 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 23:47:32,124 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 23:47:32,127 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 23:47:32,129 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 23:47:32,131 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 23:47:32,133 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 23:47:32,136 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 23:47:32,136 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 23:47:32,137 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 23:47:32,139 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 23:47:32,140 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 23:47:32,140 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 23:47:32,141 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 23:47:32,142 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 23:47:32,143 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 23:47:32,144 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 23:47:32,146 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 23:47:32,147 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 23:47:32,148 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 23:47:32,148 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 23:47:32,149 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 23:47:32,150 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 23:47:32,151 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_40eacc9a-e16d-420e-8ed6-4291c6ea4bb2/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-15 23:47:32,164 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 23:47:32,164 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 23:47:32,165 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 23:47:32,165 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 23:47:32,166 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 23:47:32,166 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 23:47:32,166 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 23:47:32,166 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 23:47:32,166 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 23:47:32,167 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 23:47:32,167 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 23:47:32,167 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 23:47:32,167 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-15 23:47:32,168 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-15 23:47:32,168 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 23:47:32,168 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 23:47:32,168 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 23:47:32,168 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 23:47:32,169 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 23:47:32,169 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 23:47:32,169 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 23:47:32,169 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 23:47:32,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 23:47:32,170 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 23:47:32,170 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 23:47:32,170 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 23:47:32,170 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-15 23:47:32,171 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-15 23:47:32,171 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 23:47:32,171 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-15 23:47:32,171 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 -> /tmp/vcloud-vcloud-master/worker/run_dir_40eacc9a-e16d-420e-8ed6-4291c6ea4bb2/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 -> 8f0681106713dda8f6af7535e98def966db59035 [2019-11-15 23:47:32,200 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 23:47:32,210 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 23:47:32,213 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 23:47:32,214 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 23:47:32,215 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 23:47:32,215 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_40eacc9a-e16d-420e-8ed6-4291c6ea4bb2/bin/uautomizer/../../sv-benchmarks/c/bitvector/s3_clnt_1.BV.c.cil-2a.c [2019-11-15 23:47:32,261 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_40eacc9a-e16d-420e-8ed6-4291c6ea4bb2/bin/uautomizer/data/ef83b700b/24fc7bebc2264cb2860b55e0ac26567b/FLAGf1d604e7d [2019-11-15 23:47:32,711 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 23:47:32,721 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_40eacc9a-e16d-420e-8ed6-4291c6ea4bb2/sv-benchmarks/c/bitvector/s3_clnt_1.BV.c.cil-2a.c [2019-11-15 23:47:32,735 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_40eacc9a-e16d-420e-8ed6-4291c6ea4bb2/bin/uautomizer/data/ef83b700b/24fc7bebc2264cb2860b55e0ac26567b/FLAGf1d604e7d [2019-11-15 23:47:32,757 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_40eacc9a-e16d-420e-8ed6-4291c6ea4bb2/bin/uautomizer/data/ef83b700b/24fc7bebc2264cb2860b55e0ac26567b [2019-11-15 23:47:32,761 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 23:47:32,763 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 23:47:32,764 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 23:47:32,764 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 23:47:32,768 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 23:47:32,769 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:47:32" (1/1) ... [2019-11-15 23:47:32,772 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33167569 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:47:32, skipping insertion in model container [2019-11-15 23:47:32,773 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:47:32" (1/1) ... [2019-11-15 23:47:32,780 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 23:47:32,836 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 23:47:33,093 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:47:33,099 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 23:47:33,274 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:47:33,297 INFO L192 MainTranslator]: Completed translation [2019-11-15 23:47:33,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:47:33 WrapperNode [2019-11-15 23:47:33,297 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 23:47:33,298 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 23:47:33,298 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 23:47:33,298 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 23:47:33,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:47:33" (1/1) ... [2019-11-15 23:47:33,333 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:47:33" (1/1) ... [2019-11-15 23:47:33,379 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 23:47:33,383 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 23:47:33,384 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 23:47:33,384 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 23:47:33,394 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:47:33" (1/1) ... [2019-11-15 23:47:33,394 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:47:33" (1/1) ... [2019-11-15 23:47:33,402 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:47:33" (1/1) ... [2019-11-15 23:47:33,403 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:47:33" (1/1) ... [2019-11-15 23:47:33,415 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:47:33" (1/1) ... [2019-11-15 23:47:33,439 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:47:33" (1/1) ... [2019-11-15 23:47:33,441 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:47:33" (1/1) ... [2019-11-15 23:47:33,451 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 23:47:33,452 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 23:47:33,452 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 23:47:33,452 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 23:47:33,453 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:47:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40eacc9a-e16d-420e-8ed6-4291c6ea4bb2/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 [2019-11-15 23:47:33,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 23:47:33,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 23:47:33,626 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-15 23:47:34,242 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2019-11-15 23:47:34,242 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2019-11-15 23:47:34,243 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 23:47:34,243 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-15 23:47:34,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:47:34 BoogieIcfgContainer [2019-11-15 23:47:34,245 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 23:47:34,246 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 23:47:34,246 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 23:47:34,249 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 23:47:34,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 11:47:32" (1/3) ... [2019-11-15 23:47:34,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24ea7800 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:47:34, skipping insertion in model container [2019-11-15 23:47:34,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:47:33" (2/3) ... [2019-11-15 23:47:34,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24ea7800 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:47:34, skipping insertion in model container [2019-11-15 23:47:34,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:47:34" (3/3) ... [2019-11-15 23:47:34,252 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_clnt_1.BV.c.cil-2a.c [2019-11-15 23:47:34,263 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 23:47:34,269 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-15 23:47:34,277 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-15 23:47:34,298 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 23:47:34,298 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 23:47:34,298 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 23:47:34,298 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 23:47:34,298 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 23:47:34,299 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 23:47:34,299 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 23:47:34,299 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 23:47:34,314 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states. [2019-11-15 23:47:34,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-15 23:47:34,321 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:47:34,322 INFO L380 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] [2019-11-15 23:47:34,324 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:47:34,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:47:34,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1449582915, now seen corresponding path program 1 times [2019-11-15 23:47:34,340 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:47:34,341 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [467044993] [2019-11-15 23:47:34,341 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40eacc9a-e16d-420e-8ed6-4291c6ea4bb2/bin/uautomizer/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:47:34,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:47:34,438 INFO L256 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 23:47:34,444 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:47:34,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:47:34,478 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:47:34,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:47:34,486 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [467044993] [2019-11-15 23:47:34,486 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:47:34,488 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-15 23:47:34,488 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203521954] [2019-11-15 23:47:34,491 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 23:47:34,492 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:47:34,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 23:47:34,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 23:47:34,503 INFO L87 Difference]: Start difference. First operand 125 states. Second operand 3 states. [2019-11-15 23:47:34,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:47:34,758 INFO L93 Difference]: Finished difference Result 247 states and 422 transitions. [2019-11-15 23:47:34,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 23:47:34,760 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2019-11-15 23:47:34,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:47:34,777 INFO L225 Difference]: With dead ends: 247 [2019-11-15 23:47:34,777 INFO L226 Difference]: Without dead ends: 112 [2019-11-15 23:47:34,782 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 23:47:34,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2019-11-15 23:47:34,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2019-11-15 23:47:34,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2019-11-15 23:47:34,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 169 transitions. [2019-11-15 23:47:34,858 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 169 transitions. Word has length 23 [2019-11-15 23:47:34,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:47:34,859 INFO L462 AbstractCegarLoop]: Abstraction has 112 states and 169 transitions. [2019-11-15 23:47:34,859 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 23:47:34,859 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 169 transitions. [2019-11-15 23:47:34,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-11-15 23:47:34,864 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:47:34,865 INFO L380 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] [2019-11-15 23:47:35,067 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:47:35,068 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:47:35,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:47:35,068 INFO L82 PathProgramCache]: Analyzing trace with hash -1463943324, now seen corresponding path program 1 times [2019-11-15 23:47:35,069 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:47:35,069 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1355724822] [2019-11-15 23:47:35,071 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40eacc9a-e16d-420e-8ed6-4291c6ea4bb2/bin/uautomizer/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:47:35,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:47:35,151 INFO L256 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 23:47:35,153 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:47:35,169 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:47:35,172 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:47:35,177 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:47:35,178 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1355724822] [2019-11-15 23:47:35,179 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:47:35,179 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-15 23:47:35,179 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743731608] [2019-11-15 23:47:35,181 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 23:47:35,182 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:47:35,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 23:47:35,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 23:47:35,183 INFO L87 Difference]: Start difference. First operand 112 states and 169 transitions. Second operand 3 states. [2019-11-15 23:47:35,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:47:35,413 INFO L93 Difference]: Finished difference Result 233 states and 355 transitions. [2019-11-15 23:47:35,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 23:47:35,414 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2019-11-15 23:47:35,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:47:35,416 INFO L225 Difference]: With dead ends: 233 [2019-11-15 23:47:35,416 INFO L226 Difference]: Without dead ends: 130 [2019-11-15 23:47:35,418 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 23:47:35,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2019-11-15 23:47:35,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 127. [2019-11-15 23:47:35,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2019-11-15 23:47:35,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 189 transitions. [2019-11-15 23:47:35,439 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 189 transitions. Word has length 36 [2019-11-15 23:47:35,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:47:35,441 INFO L462 AbstractCegarLoop]: Abstraction has 127 states and 189 transitions. [2019-11-15 23:47:35,441 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 23:47:35,442 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 189 transitions. [2019-11-15 23:47:35,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-11-15 23:47:35,448 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:47:35,448 INFO L380 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] [2019-11-15 23:47:35,651 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:47:35,652 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:47:35,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:47:35,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1876827341, now seen corresponding path program 1 times [2019-11-15 23:47:35,653 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:47:35,654 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [740150423] [2019-11-15 23:47:35,654 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40eacc9a-e16d-420e-8ed6-4291c6ea4bb2/bin/uautomizer/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:47:35,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:47:35,789 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 23:47:35,792 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:47:35,809 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-15 23:47:35,810 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:47:35,819 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-15 23:47:35,820 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [740150423] [2019-11-15 23:47:35,820 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:47:35,820 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-15 23:47:35,821 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788185771] [2019-11-15 23:47:35,821 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 23:47:35,822 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:47:35,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 23:47:35,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 23:47:35,823 INFO L87 Difference]: Start difference. First operand 127 states and 189 transitions. Second operand 3 states. [2019-11-15 23:47:36,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:47:36,046 INFO L93 Difference]: Finished difference Result 266 states and 401 transitions. [2019-11-15 23:47:36,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 23:47:36,047 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2019-11-15 23:47:36,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:47:36,048 INFO L225 Difference]: With dead ends: 266 [2019-11-15 23:47:36,049 INFO L226 Difference]: Without dead ends: 148 [2019-11-15 23:47:36,050 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 23:47:36,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2019-11-15 23:47:36,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 144. [2019-11-15 23:47:36,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2019-11-15 23:47:36,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 211 transitions. [2019-11-15 23:47:36,063 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 211 transitions. Word has length 50 [2019-11-15 23:47:36,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:47:36,064 INFO L462 AbstractCegarLoop]: Abstraction has 144 states and 211 transitions. [2019-11-15 23:47:36,064 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 23:47:36,064 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 211 transitions. [2019-11-15 23:47:36,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-11-15 23:47:36,066 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:47:36,066 INFO L380 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] [2019-11-15 23:47:36,268 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:47:36,268 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:47:36,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:47:36,269 INFO L82 PathProgramCache]: Analyzing trace with hash -708368503, now seen corresponding path program 1 times [2019-11-15 23:47:36,269 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:47:36,270 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1447367293] [2019-11-15 23:47:36,270 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40eacc9a-e16d-420e-8ed6-4291c6ea4bb2/bin/uautomizer/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:47:36,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:47:36,376 INFO L256 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 23:47:36,380 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:47:36,407 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-15 23:47:36,409 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:47:36,437 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-15 23:47:36,438 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1447367293] [2019-11-15 23:47:36,438 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:47:36,438 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-15 23:47:36,439 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709936434] [2019-11-15 23:47:36,441 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 23:47:36,441 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:47:36,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 23:47:36,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-15 23:47:36,444 INFO L87 Difference]: Start difference. First operand 144 states and 211 transitions. Second operand 4 states. [2019-11-15 23:47:36,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:47:36,547 INFO L93 Difference]: Finished difference Result 543 states and 801 transitions. [2019-11-15 23:47:36,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 23:47:36,548 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2019-11-15 23:47:36,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:47:36,552 INFO L225 Difference]: With dead ends: 543 [2019-11-15 23:47:36,552 INFO L226 Difference]: Without dead ends: 408 [2019-11-15 23:47:36,554 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-15 23:47:36,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2019-11-15 23:47:36,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 408. [2019-11-15 23:47:36,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 408 states. [2019-11-15 23:47:36,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 596 transitions. [2019-11-15 23:47:36,588 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 596 transitions. Word has length 67 [2019-11-15 23:47:36,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:47:36,589 INFO L462 AbstractCegarLoop]: Abstraction has 408 states and 596 transitions. [2019-11-15 23:47:36,589 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 23:47:36,590 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 596 transitions. [2019-11-15 23:47:36,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-11-15 23:47:36,594 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:47:36,595 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1] [2019-11-15 23:47:36,799 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:47:36,800 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:47:36,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:47:36,800 INFO L82 PathProgramCache]: Analyzing trace with hash -995531590, now seen corresponding path program 1 times [2019-11-15 23:47:36,801 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:47:36,801 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [311376847] [2019-11-15 23:47:36,801 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40eacc9a-e16d-420e-8ed6-4291c6ea4bb2/bin/uautomizer/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:47:36,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:47:36,902 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 23:47:36,906 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:47:36,925 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-15 23:47:36,926 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:47:36,945 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-15 23:47:36,949 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [311376847] [2019-11-15 23:47:36,950 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:47:36,950 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-15 23:47:36,950 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571023512] [2019-11-15 23:47:36,951 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 23:47:36,951 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:47:36,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 23:47:36,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 23:47:36,952 INFO L87 Difference]: Start difference. First operand 408 states and 596 transitions. Second operand 3 states. [2019-11-15 23:47:37,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:47:37,029 INFO L93 Difference]: Finished difference Result 828 states and 1207 transitions. [2019-11-15 23:47:37,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 23:47:37,030 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 92 [2019-11-15 23:47:37,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:47:37,034 INFO L225 Difference]: With dead ends: 828 [2019-11-15 23:47:37,034 INFO L226 Difference]: Without dead ends: 429 [2019-11-15 23:47:37,037 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 23:47:37,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2019-11-15 23:47:37,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2019-11-15 23:47:37,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2019-11-15 23:47:37,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 623 transitions. [2019-11-15 23:47:37,070 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 623 transitions. Word has length 92 [2019-11-15 23:47:37,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:47:37,071 INFO L462 AbstractCegarLoop]: Abstraction has 429 states and 623 transitions. [2019-11-15 23:47:37,071 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 23:47:37,072 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 623 transitions. [2019-11-15 23:47:37,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-11-15 23:47:37,074 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:47:37,075 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1] [2019-11-15 23:47:37,278 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:47:37,278 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:47:37,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:47:37,278 INFO L82 PathProgramCache]: Analyzing trace with hash -1727499016, now seen corresponding path program 1 times [2019-11-15 23:47:37,279 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:47:37,279 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [605599015] [2019-11-15 23:47:37,279 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40eacc9a-e16d-420e-8ed6-4291c6ea4bb2/bin/uautomizer/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:47:37,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:47:37,396 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 23:47:37,402 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:47:37,436 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-11-15 23:47:37,436 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:47:37,447 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-11-15 23:47:37,447 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [605599015] [2019-11-15 23:47:37,447 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:47:37,448 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-15 23:47:37,448 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566285855] [2019-11-15 23:47:37,448 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 23:47:37,449 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:47:37,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 23:47:37,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 23:47:37,449 INFO L87 Difference]: Start difference. First operand 429 states and 623 transitions. Second operand 3 states. [2019-11-15 23:47:37,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:47:37,490 INFO L93 Difference]: Finished difference Result 876 states and 1268 transitions. [2019-11-15 23:47:37,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 23:47:37,491 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 92 [2019-11-15 23:47:37,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:47:37,494 INFO L225 Difference]: With dead ends: 876 [2019-11-15 23:47:37,494 INFO L226 Difference]: Without dead ends: 456 [2019-11-15 23:47:37,495 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 23:47:37,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2019-11-15 23:47:37,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 456. [2019-11-15 23:47:37,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 456 states. [2019-11-15 23:47:37,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 657 transitions. [2019-11-15 23:47:37,511 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 657 transitions. Word has length 92 [2019-11-15 23:47:37,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:47:37,511 INFO L462 AbstractCegarLoop]: Abstraction has 456 states and 657 transitions. [2019-11-15 23:47:37,511 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 23:47:37,512 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 657 transitions. [2019-11-15 23:47:37,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-11-15 23:47:37,513 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:47:37,514 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:47:37,716 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:47:37,716 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:47:37,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:47:37,717 INFO L82 PathProgramCache]: Analyzing trace with hash 198697340, now seen corresponding path program 1 times [2019-11-15 23:47:37,717 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:47:37,717 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [517974717] [2019-11-15 23:47:37,717 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40eacc9a-e16d-420e-8ed6-4291c6ea4bb2/bin/uautomizer/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:47:37,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:47:37,810 INFO L256 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 23:47:37,813 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:47:37,838 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-11-15 23:47:37,838 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:47:37,851 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-11-15 23:47:37,852 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [517974717] [2019-11-15 23:47:37,852 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:47:37,852 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-15 23:47:37,852 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986021870] [2019-11-15 23:47:37,853 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 23:47:37,853 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:47:37,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 23:47:37,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 23:47:37,854 INFO L87 Difference]: Start difference. First operand 456 states and 657 transitions. Second operand 3 states. [2019-11-15 23:47:38,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:47:38,054 INFO L93 Difference]: Finished difference Result 948 states and 1392 transitions. [2019-11-15 23:47:38,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 23:47:38,059 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 110 [2019-11-15 23:47:38,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:47:38,063 INFO L225 Difference]: With dead ends: 948 [2019-11-15 23:47:38,063 INFO L226 Difference]: Without dead ends: 528 [2019-11-15 23:47:38,064 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 23:47:38,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2019-11-15 23:47:38,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 519. [2019-11-15 23:47:38,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 519 states. [2019-11-15 23:47:38,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 735 transitions. [2019-11-15 23:47:38,081 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 735 transitions. Word has length 110 [2019-11-15 23:47:38,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:47:38,082 INFO L462 AbstractCegarLoop]: Abstraction has 519 states and 735 transitions. [2019-11-15 23:47:38,082 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 23:47:38,083 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 735 transitions. [2019-11-15 23:47:38,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-11-15 23:47:38,084 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:47:38,085 INFO L380 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:47:38,286 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:47:38,287 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:47:38,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:47:38,287 INFO L82 PathProgramCache]: Analyzing trace with hash 2009981316, now seen corresponding path program 1 times [2019-11-15 23:47:38,288 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:47:38,288 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [725658880] [2019-11-15 23:47:38,288 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40eacc9a-e16d-420e-8ed6-4291c6ea4bb2/bin/uautomizer/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:47:38,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:47:38,392 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 23:47:38,395 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:47:38,413 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2019-11-15 23:47:38,413 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:47:38,432 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2019-11-15 23:47:38,432 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [725658880] [2019-11-15 23:47:38,432 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:47:38,433 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-15 23:47:38,433 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908364124] [2019-11-15 23:47:38,433 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 23:47:38,434 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:47:38,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 23:47:38,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 23:47:38,435 INFO L87 Difference]: Start difference. First operand 519 states and 735 transitions. Second operand 3 states. [2019-11-15 23:47:38,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:47:38,656 INFO L93 Difference]: Finished difference Result 1081 states and 1559 transitions. [2019-11-15 23:47:38,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 23:47:38,657 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 130 [2019-11-15 23:47:38,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:47:38,662 INFO L225 Difference]: With dead ends: 1081 [2019-11-15 23:47:38,663 INFO L226 Difference]: Without dead ends: 598 [2019-11-15 23:47:38,668 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 23:47:38,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2019-11-15 23:47:38,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 588. [2019-11-15 23:47:38,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 588 states. [2019-11-15 23:47:38,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 819 transitions. [2019-11-15 23:47:38,691 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 819 transitions. Word has length 130 [2019-11-15 23:47:38,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:47:38,691 INFO L462 AbstractCegarLoop]: Abstraction has 588 states and 819 transitions. [2019-11-15 23:47:38,691 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 23:47:38,692 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 819 transitions. [2019-11-15 23:47:38,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2019-11-15 23:47:38,694 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:47:38,695 INFO L380 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:47:38,897 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:47:38,897 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:47:38,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:47:38,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1304357395, now seen corresponding path program 1 times [2019-11-15 23:47:38,898 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:47:38,899 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1988085084] [2019-11-15 23:47:38,899 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40eacc9a-e16d-420e-8ed6-4291c6ea4bb2/bin/uautomizer/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 [2019-11-15 23:47:39,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:47:39,022 INFO L256 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 23:47:39,025 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:47:39,050 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 181 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2019-11-15 23:47:39,051 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:47:39,080 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 181 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2019-11-15 23:47:39,081 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1988085084] [2019-11-15 23:47:39,081 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:47:39,081 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-15 23:47:39,082 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920677684] [2019-11-15 23:47:39,082 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 23:47:39,082 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:47:39,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 23:47:39,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-15 23:47:39,083 INFO L87 Difference]: Start difference. First operand 588 states and 819 transitions. Second operand 4 states. [2019-11-15 23:47:39,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:47:39,457 INFO L93 Difference]: Finished difference Result 1340 states and 1949 transitions. [2019-11-15 23:47:39,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 23:47:39,460 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2019-11-15 23:47:39,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:47:39,466 INFO L225 Difference]: With dead ends: 1340 [2019-11-15 23:47:39,466 INFO L226 Difference]: Without dead ends: 788 [2019-11-15 23:47:39,467 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-15 23:47:39,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2019-11-15 23:47:39,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 768. [2019-11-15 23:47:39,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 768 states. [2019-11-15 23:47:39,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 768 states to 768 states and 1056 transitions. [2019-11-15 23:47:39,497 INFO L78 Accepts]: Start accepts. Automaton has 768 states and 1056 transitions. Word has length 151 [2019-11-15 23:47:39,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:47:39,497 INFO L462 AbstractCegarLoop]: Abstraction has 768 states and 1056 transitions. [2019-11-15 23:47:39,498 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 23:47:39,498 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 1056 transitions. [2019-11-15 23:47:39,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2019-11-15 23:47:39,501 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:47:39,501 INFO L380 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:47:39,712 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:47:39,712 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:47:39,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:47:39,712 INFO L82 PathProgramCache]: Analyzing trace with hash -837503083, now seen corresponding path program 1 times [2019-11-15 23:47:39,713 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:47:39,713 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1439081172] [2019-11-15 23:47:39,713 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40eacc9a-e16d-420e-8ed6-4291c6ea4bb2/bin/uautomizer/cvc4 Starting monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:47:39,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:47:40,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:47:40,469 INFO L168 tionRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-15 23:47:40,469 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-11-15 23:47:40,673 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:47:40,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 11:47:40 BoogieIcfgContainer [2019-11-15 23:47:40,785 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 23:47:40,785 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 23:47:40,786 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 23:47:40,786 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 23:47:40,786 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:47:34" (3/4) ... [2019-11-15 23:47:40,788 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-15 23:47:40,897 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_40eacc9a-e16d-420e-8ed6-4291c6ea4bb2/bin/uautomizer/witness.graphml [2019-11-15 23:47:40,898 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 23:47:40,899 INFO L168 Benchmark]: Toolchain (without parser) took 8136.33 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 275.3 MB). Free memory was 952.3 MB in the beginning and 1.2 GB in the end (delta: -286.9 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:47:40,900 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:47:40,900 INFO L168 Benchmark]: CACSL2BoogieTranslator took 533.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 172.0 MB). Free memory was 952.3 MB in the beginning and 1.2 GB in the end (delta: -206.8 MB). Peak memory consumption was 29.0 MB. Max. memory is 11.5 GB. [2019-11-15 23:47:40,900 INFO L168 Benchmark]: Boogie Procedure Inliner took 85.08 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:47:40,901 INFO L168 Benchmark]: Boogie Preprocessor took 67.98 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-15 23:47:40,901 INFO L168 Benchmark]: RCFGBuilder took 793.21 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 45.0 MB). Peak memory consumption was 45.0 MB. Max. memory is 11.5 GB. [2019-11-15 23:47:40,901 INFO L168 Benchmark]: TraceAbstraction took 6539.25 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 103.3 MB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -147.9 MB). Peak memory consumption was 322.7 MB. Max. memory is 11.5 GB. [2019-11-15 23:47:40,902 INFO L168 Benchmark]: Witness Printer took 112.31 ms. Allocated memory is still 1.3 GB. Free memory was 1.3 GB in the beginning and 1.2 GB in the end (delta: 16.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 11.5 GB. [2019-11-15 23:47:40,903 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 533.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 172.0 MB). Free memory was 952.3 MB in the beginning and 1.2 GB in the end (delta: -206.8 MB). Peak memory consumption was 29.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 85.08 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 67.98 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 793.21 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 45.0 MB). Peak memory consumption was 45.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 6539.25 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 103.3 MB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -147.9 MB). Peak memory consumption was 322.7 MB. Max. memory is 11.5 GB. * Witness Printer took 112.31 ms. Allocated memory is still 1.3 GB. Free memory was 1.3 GB in the beginning and 1.2 GB in the end (delta: 16.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 619]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L628] int __retres1 ; [L9] int s__info_callback = __VERIFIER_nondet_int(); [L10] unsigned int s__in_handshake = __VERIFIER_nondet_uint(); [L11] int s__state ; [L12] int s__new_session ; [L13] int s__server ; [L14] int s__version = __VERIFIER_nondet_int(); [L15] int s__type ; [L16] int s__init_num ; [L17] int s__bbio = __VERIFIER_nondet_int(); [L18] int s__wbio = __VERIFIER_nondet_int(); [L19] int s__hit = __VERIFIER_nondet_int(); [L20] int s__rwstate ; [L21] int s__init_buf___0 ; [L22] int s__debug = __VERIFIER_nondet_int(); [L23] int s__shutdown ; [L24] int s__ctx__info_callback = __VERIFIER_nondet_int(); [L25] unsigned int s__ctx__stats__sess_connect_renegotiate ; [L26] unsigned int s__ctx__stats__sess_connect ; [L27] int s__ctx__stats__sess_hit = __VERIFIER_nondet_int(); [L28] int s__ctx__stats__sess_connect_good = __VERIFIER_nondet_int(); [L29] int s__s3__change_cipher_spec ; [L30] int s__s3__flags ; [L31] int s__s3__delay_buf_pop_ret ; [L32] int s__s3__tmp__cert_req = __VERIFIER_nondet_int(); [L33] int s__s3__tmp__new_compression = __VERIFIER_nondet_int(); [L34] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int(); [L35] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int(); [L36] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int(); [L37] int s__s3__tmp__next_state___0 ; [L38] int s__s3__tmp__new_compression__id = __VERIFIER_nondet_int(); [L39] int s__session__cipher ; [L40] int s__session__compress_meth ; [L41] int buf ; [L42] unsigned long tmp ; [L43] unsigned long l ; [L44] int num1 ; [L45] int cb ; [L46] int ret ; [L47] int new_state ; [L48] int state ; [L49] int skip ; [L50] int tmp___0 ; [L51] int tmp___1 ; [L52] int tmp___2 ; [L53] int tmp___3 ; [L54] int tmp___4 ; [L55] int tmp___5 ; [L56] int tmp___6 = __VERIFIER_nondet_int(); [L57] int tmp___7 = __VERIFIER_nondet_int(); [L58] int tmp___8 = __VERIFIER_nondet_int(); [L59] int tmp___9 = __VERIFIER_nondet_int(); [L60] int blastFlag ; [L61] int ag_X ; [L62] int ag_Y ; [L63] int ag_Z = __VERIFIER_nondet_int(); [L64] unsigned int ag_V ; [L65] unsigned int ag_W ; [L66] int __retres62 ; [L69] ag_V = 2U [L70] ag_W = 5U [L71] s__state = 12292 [L72] blastFlag = 0 [L73] tmp = __VERIFIER_nondet_int() [L74] cb = 0 [L75] ret = -1 [L76] skip = 0 [L77] tmp___0 = 0 [L78] COND TRUE s__info_callback != 0 [L79] cb = s__info_callback [L87] s__in_handshake = s__in_handshake + 1 [L88] tmp___1 = __VERIFIER_nondet_int() [L89] COND FALSE !(tmp___1 & 12288) [L100] COND TRUE 1 [L102] state = s__state [L103] COND TRUE s__state == 12292 [L206] s__new_session = 1 [L207] s__state = 4096 [L208] s__ctx__stats__sess_connect_renegotiate = s__ctx__stats__sess_connect_renegotiate + 1 [L213] s__server = 0 [L214] COND TRUE cb != 0 [L219] COND FALSE !((s__version & 65280) != 768) [L225] s__type = 4096 [L226] COND FALSE !(s__init_buf___0 == 0) [L245] tmp___4 = __VERIFIER_nondet_int() [L246] COND FALSE !(! tmp___4) [L252] tmp___5 = __VERIFIER_nondet_int() [L253] COND FALSE !(! tmp___5) [L259] s__state = 4368 [L260] s__ctx__stats__sess_connect = s__ctx__stats__sess_connect + 1 [L261] s__init_num = 0 [L577] COND FALSE !(! s__s3__tmp__reuse_message) [L606] skip = 0 [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 4096) [L112] COND FALSE !(s__state == 20480) [L115] COND FALSE !(s__state == 4099) [L118] COND TRUE s__state == 4368 [L265] s__shutdown = 0 [L266] ret = __VERIFIER_nondet_int() [L267] COND TRUE blastFlag == 0 [L268] blastFlag = 1 [L272] COND FALSE !(ret <= 0) [L277] s__state = 4384 [L278] s__init_num = 0 [L279] COND TRUE s__bbio != s__wbio [L577] COND FALSE !(! s__s3__tmp__reuse_message) [L606] skip = 0 [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 4096) [L112] COND FALSE !(s__state == 20480) [L115] COND FALSE !(s__state == 4099) [L118] COND FALSE !(s__state == 4368) [L121] COND FALSE !(s__state == 4369) [L124] COND TRUE s__state == 4384 [L287] ret = __VERIFIER_nondet_int() [L288] COND TRUE blastFlag == 1 [L289] blastFlag = 2 [L293] COND FALSE !(ret <= 0) [L298] COND FALSE !(\read(s__hit)) [L301] s__state = 4400 [L303] s__init_num = 0 [L577] COND FALSE !(! s__s3__tmp__reuse_message) [L606] skip = 0 [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 4096) [L112] COND FALSE !(s__state == 20480) [L115] COND FALSE !(s__state == 4099) [L118] COND FALSE !(s__state == 4368) [L121] COND FALSE !(s__state == 4369) [L124] COND FALSE !(s__state == 4384) [L127] COND FALSE !(s__state == 4385) [L130] COND TRUE s__state == 4400 [L307] COND FALSE !(s__s3__tmp__new_cipher__algorithms - 256) [L310] ret = __VERIFIER_nondet_int() [L311] COND TRUE blastFlag == 2 [L312] blastFlag = 3 [L316] COND FALSE !(ret <= 0) [L322] s__state = 4416 [L323] s__init_num = 0 [L577] COND FALSE !(! s__s3__tmp__reuse_message) [L606] skip = 0 [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 4096) [L112] COND FALSE !(s__state == 20480) [L115] COND FALSE !(s__state == 4099) [L118] COND FALSE !(s__state == 4368) [L121] COND FALSE !(s__state == 4369) [L124] COND FALSE !(s__state == 4384) [L127] COND FALSE !(s__state == 4385) [L130] COND FALSE !(s__state == 4400) [L133] COND FALSE !(s__state == 4401) [L136] COND TRUE s__state == 4416 [L327] ret = __VERIFIER_nondet_int() [L328] COND TRUE blastFlag == 3 [L329] blastFlag = 4 [L333] COND FALSE !(ret <= 0) [L338] s__state = 4432 [L339] s__init_num = 0 [L340] COND FALSE !(! tmp___6) [L577] COND FALSE !(! s__s3__tmp__reuse_message) [L606] skip = 0 [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 4096) [L112] COND FALSE !(s__state == 20480) [L115] COND FALSE !(s__state == 4099) [L118] COND FALSE !(s__state == 4368) [L121] COND FALSE !(s__state == 4369) [L124] COND FALSE !(s__state == 4384) [L127] COND FALSE !(s__state == 4385) [L130] COND FALSE !(s__state == 4400) [L133] COND FALSE !(s__state == 4401) [L136] COND FALSE !(s__state == 4416) [L139] COND FALSE !(s__state == 4417) [L142] COND TRUE s__state == 4432 [L349] ret = __VERIFIER_nondet_int() [L350] COND FALSE !(blastFlag == 5) [L355] COND FALSE !(ret <= 0) [L360] s__state = 4448 [L361] ag_X = 44 [L362] ag_Y = 100 [L363] s__init_num = 0 [L577] COND FALSE !(! s__s3__tmp__reuse_message) [L606] skip = 0 [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 4096) [L112] COND FALSE !(s__state == 20480) [L115] COND FALSE !(s__state == 4099) [L118] COND FALSE !(s__state == 4368) [L121] COND FALSE !(s__state == 4369) [L124] COND FALSE !(s__state == 4384) [L127] COND FALSE !(s__state == 4385) [L130] COND FALSE !(s__state == 4400) [L133] COND FALSE !(s__state == 4401) [L136] COND FALSE !(s__state == 4416) [L139] COND FALSE !(s__state == 4417) [L142] COND FALSE !(s__state == 4432) [L145] COND FALSE !(s__state == 4433) [L148] COND TRUE s__state == 4448 [L367] ret = __VERIFIER_nondet_int() [L368] COND TRUE blastFlag == 4 [L369] blastFlag = 5 [L373] COND FALSE !(ret <= 0) [L378] COND TRUE \read(s__s3__tmp__cert_req) [L379] s__state = ag_X * ag_Y + ag_Z [L383] s__init_num = 0 [L577] COND FALSE !(! s__s3__tmp__reuse_message) [L606] skip = 0 [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 4096) [L112] COND FALSE !(s__state == 20480) [L115] COND FALSE !(s__state == 4099) [L118] COND FALSE !(s__state == 4368) [L121] COND FALSE !(s__state == 4369) [L124] COND FALSE !(s__state == 4384) [L127] COND FALSE !(s__state == 4385) [L130] COND FALSE !(s__state == 4400) [L133] COND FALSE !(s__state == 4401) [L136] COND FALSE !(s__state == 4416) [L139] COND FALSE !(s__state == 4417) [L142] COND TRUE s__state == 4432 [L349] ret = __VERIFIER_nondet_int() [L350] COND TRUE blastFlag == 5 [L619] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 125 locations, 1 error locations. Result: UNSAFE, OverallTime: 6.4s, OverallIterations: 10, TraceHistogramMax: 8, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 1564 SDtfs, 598 SDslu, 1118 SDs, 0 SdLazy, 724 SolverSat, 120 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1484 GetRequests, 1473 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=768occurred in iteration=9, 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, 9 MinimizatonAttempts, 46 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 902 NumberOfCodeBlocks, 902 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 1484 ConstructedInterpolants, 0 QuantifiedInterpolants, 208012 SizeOfPredicates, 3 NumberOfNonLiveVariables, 1170 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 PerfectInterpolantSequences, 1748/1748 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...