./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_14d33b0e-b492-44fe-a1e5-2d227ed4b933/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_14d33b0e-b492-44fe-a1e5-2d227ed4b933/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_14d33b0e-b492-44fe-a1e5-2d227ed4b933/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_14d33b0e-b492-44fe-a1e5-2d227ed4b933/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_14d33b0e-b492-44fe-a1e5-2d227ed4b933/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_14d33b0e-b492-44fe-a1e5-2d227ed4b933/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f963e087de2c8fcbc7f626f7e7b1f1088f7756c7 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_14d33b0e-b492-44fe-a1e5-2d227ed4b933/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_14d33b0e-b492-44fe-a1e5-2d227ed4b933/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_14d33b0e-b492-44fe-a1e5-2d227ed4b933/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_14d33b0e-b492-44fe-a1e5-2d227ed4b933/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_14d33b0e-b492-44fe-a1e5-2d227ed4b933/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_14d33b0e-b492-44fe-a1e5-2d227ed4b933/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f963e087de2c8fcbc7f626f7e7b1f1088f7756c7 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 19:31:37,296 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:31:37,299 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:31:37,357 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:31:37,358 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:31:37,364 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:31:37,366 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:31:37,370 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:31:37,374 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:31:37,384 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:31:37,385 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:31:37,387 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:31:37,387 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:31:37,391 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:31:37,392 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:31:37,398 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:31:37,400 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:31:37,403 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:31:37,407 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:31:37,415 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:31:37,417 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:31:37,418 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:31:37,420 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:31:37,422 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:31:37,430 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:31:37,431 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:31:37,431 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:31:37,433 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:31:37,434 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:31:37,435 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:31:37,436 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:31:37,437 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:31:37,439 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:31:37,441 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:31:37,442 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:31:37,442 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:31:37,443 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:31:37,444 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:31:37,444 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:31:37,445 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:31:37,446 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:31:37,448 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_14d33b0e-b492-44fe-a1e5-2d227ed4b933/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 19:31:37,485 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:31:37,485 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:31:37,487 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:31:37,487 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:31:37,488 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:31:37,488 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:31:37,488 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 19:31:37,488 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:31:37,489 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 19:31:37,489 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:31:37,490 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 19:31:37,491 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 19:31:37,491 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 19:31:37,491 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 19:31:37,492 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:31:37,492 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:31:37,492 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 19:31:37,492 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:31:37,493 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:31:37,493 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 19:31:37,493 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 19:31:37,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:31:37,494 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:31:37,494 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 19:31:37,494 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 19:31:37,495 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 19:31:37,495 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 19:31:37,495 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 19:31:37,496 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:31:37,496 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_14d33b0e-b492-44fe-a1e5-2d227ed4b933/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_14d33b0e-b492-44fe-a1e5-2d227ed4b933/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f963e087de2c8fcbc7f626f7e7b1f1088f7756c7 [2020-11-29 19:31:37,813 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:31:37,853 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:31:37,858 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:31:37,859 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:31:37,861 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:31:37,862 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_14d33b0e-b492-44fe-a1e5-2d227ed4b933/bin/uautomizer/../../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c [2020-11-29 19:31:37,946 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_14d33b0e-b492-44fe-a1e5-2d227ed4b933/bin/uautomizer/data/73c4a7411/0511f32eb9814a008485d93918f029ed/FLAG1cd3f1937 [2020-11-29 19:31:38,519 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:31:38,519 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_14d33b0e-b492-44fe-a1e5-2d227ed4b933/sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c [2020-11-29 19:31:38,548 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_14d33b0e-b492-44fe-a1e5-2d227ed4b933/bin/uautomizer/data/73c4a7411/0511f32eb9814a008485d93918f029ed/FLAG1cd3f1937 [2020-11-29 19:31:38,855 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_14d33b0e-b492-44fe-a1e5-2d227ed4b933/bin/uautomizer/data/73c4a7411/0511f32eb9814a008485d93918f029ed [2020-11-29 19:31:38,859 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:31:38,861 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:31:38,865 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:31:38,865 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:31:38,869 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:31:38,870 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:31:38" (1/1) ... [2020-11-29 19:31:38,872 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d79da5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:31:38, skipping insertion in model container [2020-11-29 19:31:38,872 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:31:38" (1/1) ... [2020-11-29 19:31:38,879 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:31:38,940 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:31:39,209 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:31:39,218 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:31:39,275 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:31:39,288 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:31:39,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:31:39 WrapperNode [2020-11-29 19:31:39,289 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:31:39,290 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:31:39,290 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:31:39,290 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:31:39,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:31:39" (1/1) ... [2020-11-29 19:31:39,314 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:31:39" (1/1) ... [2020-11-29 19:31:39,361 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:31:39,362 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:31:39,362 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:31:39,362 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:31:39,374 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:31:39" (1/1) ... [2020-11-29 19:31:39,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:31:39" (1/1) ... [2020-11-29 19:31:39,378 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:31:39" (1/1) ... [2020-11-29 19:31:39,379 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:31:39" (1/1) ... [2020-11-29 19:31:39,387 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:31:39" (1/1) ... [2020-11-29 19:31:39,394 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:31:39" (1/1) ... [2020-11-29 19:31:39,397 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:31:39" (1/1) ... [2020-11-29 19:31:39,402 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:31:39,403 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:31:39,403 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:31:39,403 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:31:39,404 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:31:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_14d33b0e-b492-44fe-a1e5-2d227ed4b933/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 [2020-11-29 19:31:39,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 19:31:39,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 19:31:39,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:31:39,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:31:39,614 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-11-29 19:31:40,351 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-11-29 19:31:40,352 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-11-29 19:31:40,366 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:31:40,366 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-29 19:31:40,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:31:40 BoogieIcfgContainer [2020-11-29 19:31:40,371 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:31:40,373 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 19:31:40,373 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 19:31:40,376 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 19:31:40,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:31:38" (1/3) ... [2020-11-29 19:31:40,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ead2d8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:31:40, skipping insertion in model container [2020-11-29 19:31:40,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:31:39" (2/3) ... [2020-11-29 19:31:40,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ead2d8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:31:40, skipping insertion in model container [2020-11-29 19:31:40,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:31:40" (3/3) ... [2020-11-29 19:31:40,379 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt_3.BV.c.cil-2a.c [2020-11-29 19:31:40,390 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 19:31:40,395 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 19:31:40,408 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 19:31:40,433 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 19:31:40,434 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 19:31:40,434 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 19:31:40,434 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:31:40,434 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:31:40,434 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 19:31:40,434 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:31:40,434 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 19:31:40,451 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states. [2020-11-29 19:31:40,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-29 19:31:40,457 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:31:40,457 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:31:40,458 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:31:40,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:31:40,462 INFO L82 PathProgramCache]: Analyzing trace with hash 259999105, now seen corresponding path program 1 times [2020-11-29 19:31:40,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:31:40,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137996416] [2020-11-29 19:31:40,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:31:40,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:31:40,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:31:40,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137996416] [2020-11-29 19:31:40,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:31:40,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:31:40,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016816448] [2020-11-29 19:31:40,765 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:31:40,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:31:40,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:31:40,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:31:40,778 INFO L87 Difference]: Start difference. First operand 127 states. Second operand 3 states. [2020-11-29 19:31:41,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:31:41,015 INFO L93 Difference]: Finished difference Result 248 states and 424 transitions. [2020-11-29 19:31:41,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:31:41,016 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-11-29 19:31:41,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:31:41,034 INFO L225 Difference]: With dead ends: 248 [2020-11-29 19:31:41,034 INFO L226 Difference]: Without dead ends: 113 [2020-11-29 19:31:41,042 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:31:41,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-11-29 19:31:41,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2020-11-29 19:31:41,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-11-29 19:31:41,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 171 transitions. [2020-11-29 19:31:41,107 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 171 transitions. Word has length 25 [2020-11-29 19:31:41,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:31:41,108 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 171 transitions. [2020-11-29 19:31:41,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:31:41,109 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 171 transitions. [2020-11-29 19:31:41,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-11-29 19:31:41,112 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:31:41,113 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:31:41,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 19:31:41,113 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:31:41,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:31:41,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1138040513, now seen corresponding path program 1 times [2020-11-29 19:31:41,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:31:41,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837597005] [2020-11-29 19:31:41,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:31:41,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:31:41,273 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:31:41,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837597005] [2020-11-29 19:31:41,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:31:41,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:31:41,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238226815] [2020-11-29 19:31:41,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:31:41,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:31:41,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:31:41,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:31:41,284 INFO L87 Difference]: Start difference. First operand 113 states and 171 transitions. Second operand 3 states. [2020-11-29 19:31:41,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:31:41,512 INFO L93 Difference]: Finished difference Result 233 states and 356 transitions. [2020-11-29 19:31:41,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:31:41,513 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2020-11-29 19:31:41,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:31:41,515 INFO L225 Difference]: With dead ends: 233 [2020-11-29 19:31:41,515 INFO L226 Difference]: Without dead ends: 131 [2020-11-29 19:31:41,516 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:31:41,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-11-29 19:31:41,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 128. [2020-11-29 19:31:41,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-11-29 19:31:41,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 191 transitions. [2020-11-29 19:31:41,535 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 191 transitions. Word has length 37 [2020-11-29 19:31:41,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:31:41,536 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 191 transitions. [2020-11-29 19:31:41,536 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:31:41,536 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 191 transitions. [2020-11-29 19:31:41,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-29 19:31:41,538 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:31:41,538 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:31:41,538 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 19:31:41,538 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:31:41,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:31:41,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1126420040, now seen corresponding path program 1 times [2020-11-29 19:31:41,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:31:41,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30595106] [2020-11-29 19:31:41,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:31:41,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:31:41,669 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-29 19:31:41,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30595106] [2020-11-29 19:31:41,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:31:41,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:31:41,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749897283] [2020-11-29 19:31:41,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:31:41,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:31:41,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:31:41,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:31:41,672 INFO L87 Difference]: Start difference. First operand 128 states and 191 transitions. Second operand 3 states. [2020-11-29 19:31:41,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:31:41,695 INFO L93 Difference]: Finished difference Result 271 states and 400 transitions. [2020-11-29 19:31:41,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:31:41,696 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-11-29 19:31:41,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:31:41,698 INFO L225 Difference]: With dead ends: 271 [2020-11-29 19:31:41,698 INFO L226 Difference]: Without dead ends: 154 [2020-11-29 19:31:41,699 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:31:41,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-11-29 19:31:41,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2020-11-29 19:31:41,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-11-29 19:31:41,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 224 transitions. [2020-11-29 19:31:41,712 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 224 transitions. Word has length 51 [2020-11-29 19:31:41,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:31:41,712 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 224 transitions. [2020-11-29 19:31:41,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:31:41,713 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 224 transitions. [2020-11-29 19:31:41,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-29 19:31:41,718 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:31:41,718 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:31:41,719 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 19:31:41,719 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:31:41,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:31:41,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1260433546, now seen corresponding path program 1 times [2020-11-29 19:31:41,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:31:41,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617841146] [2020-11-29 19:31:41,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:31:41,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:31:41,829 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-29 19:31:41,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617841146] [2020-11-29 19:31:41,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:31:41,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:31:41,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135110019] [2020-11-29 19:31:41,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:31:41,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:31:41,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:31:41,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:31:41,835 INFO L87 Difference]: Start difference. First operand 154 states and 224 transitions. Second operand 3 states. [2020-11-29 19:31:42,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:31:42,026 INFO L93 Difference]: Finished difference Result 292 states and 435 transitions. [2020-11-29 19:31:42,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:31:42,027 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-11-29 19:31:42,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:31:42,029 INFO L225 Difference]: With dead ends: 292 [2020-11-29 19:31:42,029 INFO L226 Difference]: Without dead ends: 175 [2020-11-29 19:31:42,030 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:31:42,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-11-29 19:31:42,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 171. [2020-11-29 19:31:42,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-11-29 19:31:42,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 246 transitions. [2020-11-29 19:31:42,071 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 246 transitions. Word has length 51 [2020-11-29 19:31:42,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:31:42,073 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 246 transitions. [2020-11-29 19:31:42,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:31:42,073 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 246 transitions. [2020-11-29 19:31:42,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-11-29 19:31:42,082 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:31:42,082 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:31:42,083 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 19:31:42,083 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:31:42,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:31:42,084 INFO L82 PathProgramCache]: Analyzing trace with hash -457628469, now seen corresponding path program 1 times [2020-11-29 19:31:42,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:31:42,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344717626] [2020-11-29 19:31:42,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:31:42,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:31:42,163 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:31:42,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:31:42,245 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:31:42,302 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:31:42,302 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 19:31:42,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 19:31:42,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 07:31:42 BoogieIcfgContainer [2020-11-29 19:31:42,411 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 19:31:42,412 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:31:42,412 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:31:42,412 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:31:42,413 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:31:40" (3/4) ... [2020-11-29 19:31:42,416 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 19:31:42,416 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:31:42,419 INFO L168 Benchmark]: Toolchain (without parser) took 3556.43 ms. Allocated memory was 96.5 MB in the beginning and 121.6 MB in the end (delta: 25.2 MB). Free memory was 62.4 MB in the beginning and 75.3 MB in the end (delta: -12.9 MB). Peak memory consumption was 12.7 MB. Max. memory is 16.1 GB. [2020-11-29 19:31:42,420 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 96.5 MB. Free memory was 66.9 MB in the beginning and 66.9 MB in the end (delta: 26.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:31:42,422 INFO L168 Benchmark]: CACSL2BoogieTranslator took 424.52 ms. Allocated memory is still 96.5 MB. Free memory was 62.1 MB in the beginning and 69.7 MB in the end (delta: -7.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 19:31:42,423 INFO L168 Benchmark]: Boogie Procedure Inliner took 71.03 ms. Allocated memory is still 96.5 MB. Free memory was 69.3 MB in the beginning and 66.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:31:42,425 INFO L168 Benchmark]: Boogie Preprocessor took 40.72 ms. Allocated memory is still 96.5 MB. Free memory was 66.8 MB in the beginning and 64.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:31:42,430 INFO L168 Benchmark]: RCFGBuilder took 968.03 ms. Allocated memory is still 96.5 MB. Free memory was 64.7 MB in the beginning and 59.4 MB in the end (delta: 5.3 MB). Peak memory consumption was 36.6 MB. Max. memory is 16.1 GB. [2020-11-29 19:31:42,431 INFO L168 Benchmark]: TraceAbstraction took 2038.77 ms. Allocated memory was 96.5 MB in the beginning and 121.6 MB in the end (delta: 25.2 MB). Free memory was 58.7 MB in the beginning and 76.4 MB in the end (delta: -17.7 MB). Peak memory consumption was 6.0 MB. Max. memory is 16.1 GB. [2020-11-29 19:31:42,432 INFO L168 Benchmark]: Witness Printer took 4.58 ms. Allocated memory is still 121.6 MB. Free memory was 76.2 MB in the beginning and 75.3 MB in the end (delta: 954.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:31:42,440 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 96.5 MB. Free memory was 66.9 MB in the beginning and 66.9 MB in the end (delta: 26.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 424.52 ms. Allocated memory is still 96.5 MB. Free memory was 62.1 MB in the beginning and 69.7 MB in the end (delta: -7.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 71.03 ms. Allocated memory is still 96.5 MB. Free memory was 69.3 MB in the beginning and 66.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 40.72 ms. Allocated memory is still 96.5 MB. Free memory was 66.8 MB in the beginning and 64.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 968.03 ms. Allocated memory is still 96.5 MB. Free memory was 64.7 MB in the beginning and 59.4 MB in the end (delta: 5.3 MB). Peak memory consumption was 36.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2038.77 ms. Allocated memory was 96.5 MB in the beginning and 121.6 MB in the end (delta: 25.2 MB). Free memory was 58.7 MB in the beginning and 76.4 MB in the end (delta: -17.7 MB). Peak memory consumption was 6.0 MB. Max. memory is 16.1 GB. * Witness Printer took 4.58 ms. Allocated memory is still 121.6 MB. Free memory was 76.2 MB in the beginning and 75.3 MB in the end (delta: 954.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 303. Possible FailurePath: [L625] int __retres1 ; [L11] int s__info_callback = __VERIFIER_nondet_int(); [L12] unsigned int s__in_handshake = __VERIFIER_nondet_uint(); [L13] int s__state ; [L14] int s__new_session ; [L15] int s__server ; [L16] unsigned int s__version = __VERIFIER_nondet_uint(); [L17] int s__type ; [L18] int s__init_num ; [L19] int s__bbio = __VERIFIER_nondet_int(); [L20] int s__wbio = __VERIFIER_nondet_int(); [L21] int s__hit = __VERIFIER_nondet_int(); [L22] int s__rwstate ; [L23] int s__init_buf___0 ; [L24] int s__debug = __VERIFIER_nondet_int(); [L25] int s__shutdown ; [L26] int s__ctx__info_callback = __VERIFIER_nondet_int(); [L27] unsigned int s__ctx__stats__sess_connect_renegotiate ; [L28] unsigned int s__ctx__stats__sess_connect ; [L29] unsigned int s__ctx__stats__sess_hit = __VERIFIER_nondet_uint(); [L30] unsigned int s__ctx__stats__sess_connect_good = __VERIFIER_nondet_uint(); [L31] int s__s3__change_cipher_spec ; [L32] int s__s3__flags ; [L33] int s__s3__delay_buf_pop_ret ; [L34] int s__s3__tmp__cert_req = __VERIFIER_nondet_int(); [L35] int s__s3__tmp__new_compression = __VERIFIER_nondet_int(); [L36] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int(); [L37] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int(); [L38] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int(); [L39] int s__s3__tmp__next_state___0 ; [L40] int s__s3__tmp__new_compression__id = __VERIFIER_nondet_int(); [L41] int s__session__cipher ; [L42] int s__session__compress_meth ; [L43] int buf ; [L44] unsigned long tmp ; [L45] unsigned long l ; [L46] int num1 ; [L47] int cb ; [L48] int ret ; [L49] int new_state ; [L50] int state ; [L51] int skip ; [L52] int tmp___0 ; [L53] unsigned int tmp___1 = __VERIFIER_nondet_uint(); [L54] unsigned int tmp___2 = __VERIFIER_nondet_uint(); [L55] int tmp___3 = __VERIFIER_nondet_int(); [L56] int tmp___4 = __VERIFIER_nondet_int(); [L57] int tmp___5 = __VERIFIER_nondet_int(); [L58] int tmp___6 = __VERIFIER_nondet_int(); [L59] int tmp___7 = __VERIFIER_nondet_int(); [L60] int tmp___8 = __VERIFIER_nondet_int(); [L61] int tmp___9 = __VERIFIER_nondet_int(); [L62] int blastFlag ; [L63] int ag_X ; [L64] int ag_Y ; [L65] int ag_Z ; [L66] int __retres60 ; [L69] s__state = 12292 [L70] blastFlag = 0 [L71] tmp = __VERIFIER_nondet_int() [L72] cb = 0 [L73] ret = -1 [L74] skip = 0 [L75] tmp___0 = 0 [L76] COND TRUE s__info_callback != 0 [L77] cb = s__info_callback [L85] s__in_handshake = s__in_handshake + 1 [L86] COND FALSE !(tmp___1 + 12288) [L95] COND TRUE \read(s__hit) [L96] ag_Y = 208 [L101] COND TRUE 1 [L103] state = s__state [L104] COND TRUE s__state == 12292 [L207] s__new_session = 1 [L208] s__state = 4096 [L209] s__ctx__stats__sess_connect_renegotiate = s__ctx__stats__sess_connect_renegotiate + 1 [L214] s__server = 0 [L215] COND TRUE cb != 0 [L220] COND FALSE !(s__version + 65280 != 768) [L226] s__type = 4096 [L227] COND FALSE !((unsigned long )s__init_buf___0 == (unsigned long )((void *)0)) [L245] COND FALSE !(! tmp___4) [L251] COND FALSE !(! tmp___5) [L257] s__state = 4368 [L258] s__ctx__stats__sess_connect = s__ctx__stats__sess_connect + 1 [L259] s__init_num = 0 [L574] COND FALSE !(! s__s3__tmp__reuse_message) [L603] skip = 0 [L101] COND TRUE 1 [L103] state = s__state [L104] COND FALSE !(s__state == 12292) [L107] COND FALSE !(s__state == 16384) [L110] COND FALSE !(s__state == 4096) [L113] COND FALSE !(s__state == 20480) [L116] COND FALSE !(s__state == 4099) [L119] COND TRUE s__state == 4368 [L263] s__shutdown = 0 [L264] ret = __VERIFIER_nondet_int() [L265] COND TRUE blastFlag == 0 [L266] blastFlag = 1 [L270] COND FALSE !(ret <= 0) [L275] s__state = 4384 [L276] ag_X = s__state - 32 [L277] s__init_num = 0 [L278] COND TRUE (unsigned long )s__bbio != (unsigned long )s__wbio [L574] COND FALSE !(! s__s3__tmp__reuse_message) [L603] skip = 0 [L101] COND TRUE 1 [L103] state = s__state [L104] COND FALSE !(s__state == 12292) [L107] COND FALSE !(s__state == 16384) [L110] COND FALSE !(s__state == 4096) [L113] COND FALSE !(s__state == 20480) [L116] COND FALSE !(s__state == 4099) [L119] COND FALSE !(s__state == 4368) [L122] COND FALSE !(s__state == 4369) [L125] COND TRUE s__state == 4384 [L286] ret = __VERIFIER_nondet_int() [L287] COND TRUE blastFlag == 1 [L288] blastFlag = 2 [L296] COND FALSE !(ret <= 0) [L301] s__state = ag_X [L302] COND TRUE \read(s__hit) [L303] s__state = s__state | ag_Y [L307] s__init_num = 0 [L574] COND FALSE !(! s__s3__tmp__reuse_message) [L603] skip = 0 [L101] COND TRUE 1 [L103] state = s__state [L104] COND FALSE !(s__state == 12292) [L107] COND FALSE !(s__state == 16384) [L110] COND FALSE !(s__state == 4096) [L113] COND FALSE !(s__state == 20480) [L116] COND FALSE !(s__state == 4099) [L119] COND FALSE !(s__state == 4368) [L122] COND FALSE !(s__state == 4369) [L125] COND FALSE !(s__state == 4384) [L128] COND FALSE !(s__state == 4385) [L131] COND FALSE !(s__state == 4400) [L134] COND FALSE !(s__state == 4401) [L137] COND FALSE !(s__state == 4416) [L140] COND FALSE !(s__state == 4417) [L143] COND TRUE s__state == 4432 [L353] ret = __VERIFIER_nondet_int() [L354] COND TRUE blastFlag <= 5 [L3] __assert_fail("0", "s3_clnt_3.BV.c.cil-2a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 127 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.8s, OverallIterations: 5, TraceHistogramMax: 4, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 714 SDtfs, 58 SDslu, 412 SDs, 0 SdLazy, 296 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=171occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 232 NumberOfCodeBlocks, 232 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 160 ConstructedInterpolants, 0 QuantifiedInterpolants, 11828 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 35/35 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-29 19:31:44,839 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:31:44,843 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:31:44,898 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:31:44,899 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:31:44,904 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:31:44,907 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:31:44,912 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:31:44,916 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:31:44,922 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:31:44,923 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:31:44,930 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:31:44,931 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:31:44,934 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:31:44,936 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:31:44,938 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:31:44,939 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:31:44,942 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:31:44,946 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:31:44,955 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:31:44,961 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:31:44,962 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:31:44,965 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:31:44,967 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:31:44,976 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:31:44,976 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:31:44,977 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:31:44,979 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:31:44,980 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:31:44,981 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:31:44,982 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:31:44,982 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:31:44,984 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:31:44,985 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:31:44,986 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:31:44,986 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:31:44,987 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:31:44,987 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:31:44,988 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:31:44,990 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:31:44,990 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:31:44,991 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_14d33b0e-b492-44fe-a1e5-2d227ed4b933/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-29 19:31:45,037 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:31:45,037 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:31:45,040 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:31:45,041 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:31:45,041 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:31:45,041 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:31:45,041 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 19:31:45,041 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 19:31:45,042 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:31:45,042 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 19:31:45,043 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 19:31:45,043 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 19:31:45,043 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-29 19:31:45,043 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-29 19:31:45,044 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 19:31:45,044 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:31:45,044 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:31:45,044 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 19:31:45,045 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:31:45,045 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:31:45,045 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 19:31:45,045 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 19:31:45,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:31:45,046 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:31:45,046 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 19:31:45,046 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 19:31:45,046 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-29 19:31:45,046 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-29 19:31:45,046 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 19:31:45,047 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:31:45,047 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-29 19:31:45,047 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_14d33b0e-b492-44fe-a1e5-2d227ed4b933/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_14d33b0e-b492-44fe-a1e5-2d227ed4b933/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f963e087de2c8fcbc7f626f7e7b1f1088f7756c7 [2020-11-29 19:31:45,459 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:31:45,493 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:31:45,498 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:31:45,500 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:31:45,501 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:31:45,502 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_14d33b0e-b492-44fe-a1e5-2d227ed4b933/bin/uautomizer/../../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c [2020-11-29 19:31:45,584 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_14d33b0e-b492-44fe-a1e5-2d227ed4b933/bin/uautomizer/data/feadfa7b9/f8ba7ab41c184ab881ca0759df9359eb/FLAG4de50b194 [2020-11-29 19:31:46,169 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:31:46,171 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_14d33b0e-b492-44fe-a1e5-2d227ed4b933/sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c [2020-11-29 19:31:46,186 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_14d33b0e-b492-44fe-a1e5-2d227ed4b933/bin/uautomizer/data/feadfa7b9/f8ba7ab41c184ab881ca0759df9359eb/FLAG4de50b194 [2020-11-29 19:31:46,472 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_14d33b0e-b492-44fe-a1e5-2d227ed4b933/bin/uautomizer/data/feadfa7b9/f8ba7ab41c184ab881ca0759df9359eb [2020-11-29 19:31:46,475 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:31:46,476 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:31:46,479 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:31:46,479 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:31:46,483 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:31:46,484 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:31:46" (1/1) ... [2020-11-29 19:31:46,486 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14f3a616 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:31:46, skipping insertion in model container [2020-11-29 19:31:46,486 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:31:46" (1/1) ... [2020-11-29 19:31:46,494 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:31:46,569 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:31:46,833 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:31:46,850 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:31:46,930 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:31:46,944 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:31:46,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:31:46 WrapperNode [2020-11-29 19:31:46,945 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:31:46,946 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:31:46,947 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:31:46,947 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:31:46,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:31:46" (1/1) ... [2020-11-29 19:31:46,966 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:31:46" (1/1) ... [2020-11-29 19:31:47,019 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:31:47,020 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:31:47,020 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:31:47,020 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:31:47,033 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:31:46" (1/1) ... [2020-11-29 19:31:47,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:31:46" (1/1) ... [2020-11-29 19:31:47,048 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:31:46" (1/1) ... [2020-11-29 19:31:47,048 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:31:46" (1/1) ... [2020-11-29 19:31:47,069 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:31:46" (1/1) ... [2020-11-29 19:31:47,077 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:31:46" (1/1) ... [2020-11-29 19:31:47,094 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:31:46" (1/1) ... [2020-11-29 19:31:47,098 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:31:47,099 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:31:47,099 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:31:47,099 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:31:47,100 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:31:46" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_14d33b0e-b492-44fe-a1e5-2d227ed4b933/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 [2020-11-29 19:31:47,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-29 19:31:47,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 19:31:47,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:31:47,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:31:47,464 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-11-29 19:31:48,172 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-11-29 19:31:48,172 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-11-29 19:31:48,180 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:31:48,180 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-29 19:31:48,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:31:48 BoogieIcfgContainer [2020-11-29 19:31:48,182 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:31:48,184 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 19:31:48,184 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 19:31:48,187 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 19:31:48,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:31:46" (1/3) ... [2020-11-29 19:31:48,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29fcdaaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:31:48, skipping insertion in model container [2020-11-29 19:31:48,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:31:46" (2/3) ... [2020-11-29 19:31:48,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29fcdaaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:31:48, skipping insertion in model container [2020-11-29 19:31:48,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:31:48" (3/3) ... [2020-11-29 19:31:48,190 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt_3.BV.c.cil-2a.c [2020-11-29 19:31:48,201 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 19:31:48,208 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 19:31:48,220 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 19:31:48,251 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 19:31:48,251 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 19:31:48,251 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 19:31:48,251 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:31:48,252 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:31:48,252 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 19:31:48,252 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:31:48,252 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 19:31:48,266 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states. [2020-11-29 19:31:48,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-29 19:31:48,272 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:31:48,273 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:31:48,273 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:31:48,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:31:48,279 INFO L82 PathProgramCache]: Analyzing trace with hash 259999105, now seen corresponding path program 1 times [2020-11-29 19:31:48,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 19:31:48,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [280747809] [2020-11-29 19:31:48,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_14d33b0e-b492-44fe-a1e5-2d227ed4b933/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-29 19:31:48,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:31:48,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 19:31:48,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:31:48,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:31:48,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 19:31:48,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:31:48,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [280747809] [2020-11-29 19:31:48,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:31:48,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-29 19:31:48,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167870542] [2020-11-29 19:31:48,502 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:31:48,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 19:31:48,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:31:48,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:31:48,523 INFO L87 Difference]: Start difference. First operand 127 states. Second operand 3 states. [2020-11-29 19:31:48,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:31:48,839 INFO L93 Difference]: Finished difference Result 248 states and 424 transitions. [2020-11-29 19:31:48,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:31:48,841 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-11-29 19:31:48,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:31:48,853 INFO L225 Difference]: With dead ends: 248 [2020-11-29 19:31:48,854 INFO L226 Difference]: Without dead ends: 113 [2020-11-29 19:31:48,857 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:31:48,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-11-29 19:31:48,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2020-11-29 19:31:48,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-11-29 19:31:48,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 171 transitions. [2020-11-29 19:31:48,925 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 171 transitions. Word has length 25 [2020-11-29 19:31:48,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:31:48,925 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 171 transitions. [2020-11-29 19:31:48,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:31:48,925 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 171 transitions. [2020-11-29 19:31:48,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-11-29 19:31:48,928 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:31:48,929 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:31:49,129 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-29 19:31:49,130 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:31:49,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:31:49,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1138040513, now seen corresponding path program 1 times [2020-11-29 19:31:49,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 19:31:49,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [5152334] [2020-11-29 19:31:49,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_14d33b0e-b492-44fe-a1e5-2d227ed4b933/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-29 19:31:49,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:31:49,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 19:31:49,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:31:49,275 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:31:49,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 19:31:49,283 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:31:49,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [5152334] [2020-11-29 19:31:49,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:31:49,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-29 19:31:49,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430305050] [2020-11-29 19:31:49,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:31:49,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 19:31:49,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:31:49,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:31:49,291 INFO L87 Difference]: Start difference. First operand 113 states and 171 transitions. Second operand 3 states. [2020-11-29 19:31:49,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:31:49,513 INFO L93 Difference]: Finished difference Result 233 states and 356 transitions. [2020-11-29 19:31:49,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:31:49,515 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2020-11-29 19:31:49,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:31:49,516 INFO L225 Difference]: With dead ends: 233 [2020-11-29 19:31:49,517 INFO L226 Difference]: Without dead ends: 131 [2020-11-29 19:31:49,518 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:31:49,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-11-29 19:31:49,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 128. [2020-11-29 19:31:49,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-11-29 19:31:49,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 191 transitions. [2020-11-29 19:31:49,540 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 191 transitions. Word has length 37 [2020-11-29 19:31:49,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:31:49,541 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 191 transitions. [2020-11-29 19:31:49,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:31:49,541 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 191 transitions. [2020-11-29 19:31:49,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-29 19:31:49,548 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:31:49,548 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:31:49,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-29 19:31:49,765 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:31:49,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:31:49,765 INFO L82 PathProgramCache]: Analyzing trace with hash 1126420040, now seen corresponding path program 1 times [2020-11-29 19:31:49,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 19:31:49,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1720732862] [2020-11-29 19:31:49,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_14d33b0e-b492-44fe-a1e5-2d227ed4b933/bin/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-29 19:31:49,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:31:49,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 19:31:49,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:31:49,895 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-29 19:31:49,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 19:31:49,921 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-29 19:31:49,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1720732862] [2020-11-29 19:31:49,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:31:49,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-29 19:31:49,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079520940] [2020-11-29 19:31:49,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:31:49,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 19:31:49,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:31:49,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:31:49,927 INFO L87 Difference]: Start difference. First operand 128 states and 191 transitions. Second operand 3 states. [2020-11-29 19:31:49,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:31:49,966 INFO L93 Difference]: Finished difference Result 271 states and 400 transitions. [2020-11-29 19:31:49,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:31:49,967 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-11-29 19:31:49,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:31:49,969 INFO L225 Difference]: With dead ends: 271 [2020-11-29 19:31:49,969 INFO L226 Difference]: Without dead ends: 154 [2020-11-29 19:31:49,970 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:31:49,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-11-29 19:31:49,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2020-11-29 19:31:49,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-11-29 19:31:49,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 224 transitions. [2020-11-29 19:31:49,983 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 224 transitions. Word has length 51 [2020-11-29 19:31:49,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:31:49,983 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 224 transitions. [2020-11-29 19:31:49,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:31:49,984 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 224 transitions. [2020-11-29 19:31:49,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-29 19:31:49,985 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:31:49,985 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:31:50,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-29 19:31:50,204 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:31:50,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:31:50,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1260433546, now seen corresponding path program 1 times [2020-11-29 19:31:50,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 19:31:50,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1787047376] [2020-11-29 19:31:50,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_14d33b0e-b492-44fe-a1e5-2d227ed4b933/bin/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-29 19:31:50,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:31:50,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 19:31:50,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:31:50,342 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-29 19:31:50,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 19:31:50,358 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-29 19:31:50,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1787047376] [2020-11-29 19:31:50,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:31:50,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-29 19:31:50,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861997741] [2020-11-29 19:31:50,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:31:50,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 19:31:50,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:31:50,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:31:50,365 INFO L87 Difference]: Start difference. First operand 154 states and 224 transitions. Second operand 3 states. [2020-11-29 19:31:50,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:31:50,596 INFO L93 Difference]: Finished difference Result 292 states and 435 transitions. [2020-11-29 19:31:50,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:31:50,597 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-11-29 19:31:50,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:31:50,599 INFO L225 Difference]: With dead ends: 292 [2020-11-29 19:31:50,599 INFO L226 Difference]: Without dead ends: 175 [2020-11-29 19:31:50,600 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:31:50,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-11-29 19:31:50,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 171. [2020-11-29 19:31:50,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-11-29 19:31:50,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 246 transitions. [2020-11-29 19:31:50,619 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 246 transitions. Word has length 51 [2020-11-29 19:31:50,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:31:50,621 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 246 transitions. [2020-11-29 19:31:50,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:31:50,621 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 246 transitions. [2020-11-29 19:31:50,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-11-29 19:31:50,627 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:31:50,628 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:31:50,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-29 19:31:50,847 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:31:50,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:31:50,848 INFO L82 PathProgramCache]: Analyzing trace with hash -457628469, now seen corresponding path program 1 times [2020-11-29 19:31:50,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 19:31:50,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [697658998] [2020-11-29 19:31:50,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_14d33b0e-b492-44fe-a1e5-2d227ed4b933/bin/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-11-29 19:31:50,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:31:50,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-29 19:31:50,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:31:51,110 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-11-29 19:31:51,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 19:31:51,291 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-11-29 19:31:51,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [697658998] [2020-11-29 19:31:51,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:31:51,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-11-29 19:31:51,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296852151] [2020-11-29 19:31:51,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 19:31:51,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 19:31:51,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 19:31:51,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:31:51,295 INFO L87 Difference]: Start difference. First operand 171 states and 246 transitions. Second operand 6 states. [2020-11-29 19:31:52,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:31:52,054 INFO L93 Difference]: Finished difference Result 566 states and 848 transitions. [2020-11-29 19:31:52,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 19:31:52,055 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2020-11-29 19:31:52,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:31:52,058 INFO L225 Difference]: With dead ends: 566 [2020-11-29 19:31:52,059 INFO L226 Difference]: Without dead ends: 431 [2020-11-29 19:31:52,060 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-11-29 19:31:52,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2020-11-29 19:31:52,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 419. [2020-11-29 19:31:52,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2020-11-29 19:31:52,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 607 transitions. [2020-11-29 19:31:52,100 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 607 transitions. Word has length 68 [2020-11-29 19:31:52,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:31:52,101 INFO L481 AbstractCegarLoop]: Abstraction has 419 states and 607 transitions. [2020-11-29 19:31:52,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 19:31:52,101 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 607 transitions. [2020-11-29 19:31:52,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-11-29 19:31:52,103 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:31:52,103 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:31:52,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-29 19:31:52,323 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:31:52,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:31:52,323 INFO L82 PathProgramCache]: Analyzing trace with hash 2031900493, now seen corresponding path program 1 times [2020-11-29 19:31:52,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 19:31:52,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1364635749] [2020-11-29 19:31:52,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_14d33b0e-b492-44fe-a1e5-2d227ed4b933/bin/uautomizer/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-11-29 19:31:52,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:31:52,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 19:31:52,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:31:52,461 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-11-29 19:31:52,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 19:31:52,471 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-11-29 19:31:52,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1364635749] [2020-11-29 19:31:52,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:31:52,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-29 19:31:52,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589501028] [2020-11-29 19:31:52,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:31:52,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 19:31:52,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:31:52,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:31:52,474 INFO L87 Difference]: Start difference. First operand 419 states and 607 transitions. Second operand 3 states. [2020-11-29 19:31:52,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:31:52,538 INFO L93 Difference]: Finished difference Result 927 states and 1364 transitions. [2020-11-29 19:31:52,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:31:52,539 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2020-11-29 19:31:52,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:31:52,543 INFO L225 Difference]: With dead ends: 927 [2020-11-29 19:31:52,544 INFO L226 Difference]: Without dead ends: 574 [2020-11-29 19:31:52,545 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:31:52,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2020-11-29 19:31:52,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 572. [2020-11-29 19:31:52,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 572 states. [2020-11-29 19:31:52,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 835 transitions. [2020-11-29 19:31:52,583 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 835 transitions. Word has length 68 [2020-11-29 19:31:52,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:31:52,583 INFO L481 AbstractCegarLoop]: Abstraction has 572 states and 835 transitions. [2020-11-29 19:31:52,583 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:31:52,583 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 835 transitions. [2020-11-29 19:31:52,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-11-29 19:31:52,585 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:31:52,585 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:31:52,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-29 19:31:52,805 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:31:52,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:31:52,805 INFO L82 PathProgramCache]: Analyzing trace with hash -875025075, now seen corresponding path program 1 times [2020-11-29 19:31:52,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 19:31:52,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1542306059] [2020-11-29 19:31:52,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_14d33b0e-b492-44fe-a1e5-2d227ed4b933/bin/uautomizer/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-11-29 19:31:52,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:31:52,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 19:31:52,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:31:52,935 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-11-29 19:31:52,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 19:31:52,944 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-11-29 19:31:52,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1542306059] [2020-11-29 19:31:52,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:31:52,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-29 19:31:52,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038792306] [2020-11-29 19:31:52,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:31:52,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 19:31:52,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:31:52,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:31:52,946 INFO L87 Difference]: Start difference. First operand 572 states and 835 transitions. Second operand 3 states. [2020-11-29 19:31:52,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:31:52,983 INFO L93 Difference]: Finished difference Result 576 states and 837 transitions. [2020-11-29 19:31:52,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:31:52,984 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2020-11-29 19:31:52,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:31:52,987 INFO L225 Difference]: With dead ends: 576 [2020-11-29 19:31:52,987 INFO L226 Difference]: Without dead ends: 419 [2020-11-29 19:31:52,988 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:31:52,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2020-11-29 19:31:53,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 417. [2020-11-29 19:31:53,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-11-29 19:31:53,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 598 transitions. [2020-11-29 19:31:53,006 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 598 transitions. Word has length 68 [2020-11-29 19:31:53,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:31:53,006 INFO L481 AbstractCegarLoop]: Abstraction has 417 states and 598 transitions. [2020-11-29 19:31:53,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:31:53,007 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 598 transitions. [2020-11-29 19:31:53,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-11-29 19:31:53,008 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:31:53,008 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:31:53,223 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-11-29 19:31:53,224 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:31:53,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:31:53,224 INFO L82 PathProgramCache]: Analyzing trace with hash 1614503887, now seen corresponding path program 1 times [2020-11-29 19:31:53,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 19:31:53,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1893755202] [2020-11-29 19:31:53,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_14d33b0e-b492-44fe-a1e5-2d227ed4b933/bin/uautomizer/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-11-29 19:31:53,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:31:53,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 19:31:53,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:31:53,424 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 13 proven. 25 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-29 19:31:53,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 19:31:53,539 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 12 proven. 26 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-29 19:31:53,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1893755202] [2020-11-29 19:31:53,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:31:53,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 12 [2020-11-29 19:31:53,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648410145] [2020-11-29 19:31:53,540 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-29 19:31:53,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 19:31:53,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-29 19:31:53,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-11-29 19:31:53,542 INFO L87 Difference]: Start difference. First operand 417 states and 598 transitions. Second operand 12 states. [2020-11-29 19:31:54,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:31:54,834 INFO L93 Difference]: Finished difference Result 855 states and 1264 transitions. [2020-11-29 19:31:54,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-29 19:31:54,836 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 68 [2020-11-29 19:31:54,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:31:54,841 INFO L225 Difference]: With dead ends: 855 [2020-11-29 19:31:54,841 INFO L226 Difference]: Without dead ends: 699 [2020-11-29 19:31:54,842 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=126, Invalid=254, Unknown=0, NotChecked=0, Total=380 [2020-11-29 19:31:54,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2020-11-29 19:31:54,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 476. [2020-11-29 19:31:54,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 476 states. [2020-11-29 19:31:54,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 667 transitions. [2020-11-29 19:31:54,875 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 667 transitions. Word has length 68 [2020-11-29 19:31:54,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:31:54,876 INFO L481 AbstractCegarLoop]: Abstraction has 476 states and 667 transitions. [2020-11-29 19:31:54,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-29 19:31:54,876 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 667 transitions. [2020-11-29 19:31:54,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-11-29 19:31:54,877 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:31:54,877 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:31:55,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-11-29 19:31:55,100 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:31:55,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:31:55,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1844660206, now seen corresponding path program 1 times [2020-11-29 19:31:55,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 19:31:55,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [76177425] [2020-11-29 19:31:55,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_14d33b0e-b492-44fe-a1e5-2d227ed4b933/bin/uautomizer/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-11-29 19:31:55,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:31:55,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 19:31:55,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:31:55,231 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-11-29 19:31:55,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 19:31:55,257 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-11-29 19:31:55,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [76177425] [2020-11-29 19:31:55,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:31:55,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-29 19:31:55,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216897738] [2020-11-29 19:31:55,258 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:31:55,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 19:31:55,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:31:55,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:31:55,260 INFO L87 Difference]: Start difference. First operand 476 states and 667 transitions. Second operand 3 states. [2020-11-29 19:31:55,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:31:55,472 INFO L93 Difference]: Finished difference Result 934 states and 1333 transitions. [2020-11-29 19:31:55,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:31:55,474 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 85 [2020-11-29 19:31:55,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:31:55,477 INFO L225 Difference]: With dead ends: 934 [2020-11-29 19:31:55,477 INFO L226 Difference]: Without dead ends: 524 [2020-11-29 19:31:55,478 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:31:55,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2020-11-29 19:31:55,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 518. [2020-11-29 19:31:55,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 518 states. [2020-11-29 19:31:55,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 719 transitions. [2020-11-29 19:31:55,500 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 719 transitions. Word has length 85 [2020-11-29 19:31:55,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:31:55,500 INFO L481 AbstractCegarLoop]: Abstraction has 518 states and 719 transitions. [2020-11-29 19:31:55,501 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:31:55,501 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 719 transitions. [2020-11-29 19:31:55,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-11-29 19:31:55,502 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:31:55,502 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:31:55,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-11-29 19:31:55,716 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:31:55,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:31:55,717 INFO L82 PathProgramCache]: Analyzing trace with hash 2022672797, now seen corresponding path program 1 times [2020-11-29 19:31:55,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 19:31:55,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1450945517] [2020-11-29 19:31:55,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_14d33b0e-b492-44fe-a1e5-2d227ed4b933/bin/uautomizer/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2020-11-29 19:31:55,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:31:55,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 19:31:55,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:31:55,860 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-11-29 19:31:55,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 19:31:55,890 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-11-29 19:31:55,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1450945517] [2020-11-29 19:31:55,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:31:55,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-29 19:31:55,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623726553] [2020-11-29 19:31:55,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:31:55,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 19:31:55,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:31:55,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:31:55,893 INFO L87 Difference]: Start difference. First operand 518 states and 719 transitions. Second operand 4 states. [2020-11-29 19:31:55,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:31:55,979 INFO L93 Difference]: Finished difference Result 1468 states and 2045 transitions. [2020-11-29 19:31:55,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:31:55,980 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2020-11-29 19:31:55,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:31:55,986 INFO L225 Difference]: With dead ends: 1468 [2020-11-29 19:31:55,986 INFO L226 Difference]: Without dead ends: 1016 [2020-11-29 19:31:55,988 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:31:55,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1016 states. [2020-11-29 19:31:56,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1016 to 1012. [2020-11-29 19:31:56,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1012 states. [2020-11-29 19:31:56,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1012 states to 1012 states and 1394 transitions. [2020-11-29 19:31:56,029 INFO L78 Accepts]: Start accepts. Automaton has 1012 states and 1394 transitions. Word has length 104 [2020-11-29 19:31:56,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:31:56,029 INFO L481 AbstractCegarLoop]: Abstraction has 1012 states and 1394 transitions. [2020-11-29 19:31:56,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:31:56,030 INFO L276 IsEmpty]: Start isEmpty. Operand 1012 states and 1394 transitions. [2020-11-29 19:31:56,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-11-29 19:31:56,032 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:31:56,032 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:31:56,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2020-11-29 19:31:56,248 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:31:56,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:31:56,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1888659291, now seen corresponding path program 1 times [2020-11-29 19:31:56,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 19:31:56,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [49381601] [2020-11-29 19:31:56,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_14d33b0e-b492-44fe-a1e5-2d227ed4b933/bin/uautomizer/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2020-11-29 19:31:56,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:31:56,366 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:31:56,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:31:56,453 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:31:56,675 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-29 19:31:56,675 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 19:31:56,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2020-11-29 19:31:57,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 07:31:57 BoogieIcfgContainer [2020-11-29 19:31:57,020 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 19:31:57,021 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:31:57,021 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:31:57,021 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:31:57,022 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:31:48" (3/4) ... [2020-11-29 19:31:57,025 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 19:31:57,148 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_14d33b0e-b492-44fe-a1e5-2d227ed4b933/bin/uautomizer/witness.graphml [2020-11-29 19:31:57,149 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:31:57,151 INFO L168 Benchmark]: Toolchain (without parser) took 10673.64 ms. Allocated memory was 79.7 MB in the beginning and 144.7 MB in the end (delta: 65.0 MB). Free memory was 45.7 MB in the beginning and 97.8 MB in the end (delta: -52.1 MB). Peak memory consumption was 14.8 MB. Max. memory is 16.1 GB. [2020-11-29 19:31:57,151 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 79.7 MB. Free memory was 62.5 MB in the beginning and 62.5 MB in the end (delta: 64.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:31:57,152 INFO L168 Benchmark]: CACSL2BoogieTranslator took 466.88 ms. Allocated memory is still 79.7 MB. Free memory was 45.5 MB in the beginning and 51.6 MB in the end (delta: -6.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 19:31:57,152 INFO L168 Benchmark]: Boogie Procedure Inliner took 72.86 ms. Allocated memory is still 79.7 MB. Free memory was 51.4 MB in the beginning and 49.0 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:31:57,153 INFO L168 Benchmark]: Boogie Preprocessor took 78.37 ms. Allocated memory is still 79.7 MB. Free memory was 49.0 MB in the beginning and 46.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:31:57,153 INFO L168 Benchmark]: RCFGBuilder took 1083.04 ms. Allocated memory is still 79.7 MB. Free memory was 46.9 MB in the beginning and 58.3 MB in the end (delta: -11.4 MB). Peak memory consumption was 20.0 MB. Max. memory is 16.1 GB. [2020-11-29 19:31:57,154 INFO L168 Benchmark]: TraceAbstraction took 8836.94 ms. Allocated memory was 79.7 MB in the beginning and 144.7 MB in the end (delta: 65.0 MB). Free memory was 58.2 MB in the beginning and 110.4 MB in the end (delta: -52.2 MB). Peak memory consumption was 85.3 MB. Max. memory is 16.1 GB. [2020-11-29 19:31:57,154 INFO L168 Benchmark]: Witness Printer took 127.95 ms. Allocated memory is still 144.7 MB. Free memory was 110.4 MB in the beginning and 97.8 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 19:31:57,156 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 79.7 MB. Free memory was 62.5 MB in the beginning and 62.5 MB in the end (delta: 64.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 466.88 ms. Allocated memory is still 79.7 MB. Free memory was 45.5 MB in the beginning and 51.6 MB in the end (delta: -6.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 72.86 ms. Allocated memory is still 79.7 MB. Free memory was 51.4 MB in the beginning and 49.0 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 78.37 ms. Allocated memory is still 79.7 MB. Free memory was 49.0 MB in the beginning and 46.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1083.04 ms. Allocated memory is still 79.7 MB. Free memory was 46.9 MB in the beginning and 58.3 MB in the end (delta: -11.4 MB). Peak memory consumption was 20.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8836.94 ms. Allocated memory was 79.7 MB in the beginning and 144.7 MB in the end (delta: 65.0 MB). Free memory was 58.2 MB in the beginning and 110.4 MB in the end (delta: -52.2 MB). Peak memory consumption was 85.3 MB. Max. memory is 16.1 GB. * Witness Printer took 127.95 ms. Allocated memory is still 144.7 MB. Free memory was 110.4 MB in the beginning and 97.8 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L625] int __retres1 ; [L11] int s__info_callback = __VERIFIER_nondet_int(); [L12] unsigned int s__in_handshake = __VERIFIER_nondet_uint(); [L13] int s__state ; [L14] int s__new_session ; [L15] int s__server ; [L16] unsigned int s__version = __VERIFIER_nondet_uint(); [L17] int s__type ; [L18] int s__init_num ; [L19] int s__bbio = __VERIFIER_nondet_int(); [L20] int s__wbio = __VERIFIER_nondet_int(); [L21] int s__hit = __VERIFIER_nondet_int(); [L22] int s__rwstate ; [L23] int s__init_buf___0 ; [L24] int s__debug = __VERIFIER_nondet_int(); [L25] int s__shutdown ; [L26] int s__ctx__info_callback = __VERIFIER_nondet_int(); [L27] unsigned int s__ctx__stats__sess_connect_renegotiate ; [L28] unsigned int s__ctx__stats__sess_connect ; [L29] unsigned int s__ctx__stats__sess_hit = __VERIFIER_nondet_uint(); [L30] unsigned int s__ctx__stats__sess_connect_good = __VERIFIER_nondet_uint(); [L31] int s__s3__change_cipher_spec ; [L32] int s__s3__flags ; [L33] int s__s3__delay_buf_pop_ret ; [L34] int s__s3__tmp__cert_req = __VERIFIER_nondet_int(); [L35] int s__s3__tmp__new_compression = __VERIFIER_nondet_int(); [L36] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int(); [L37] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int(); [L38] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int(); [L39] int s__s3__tmp__next_state___0 ; [L40] int s__s3__tmp__new_compression__id = __VERIFIER_nondet_int(); [L41] int s__session__cipher ; [L42] int s__session__compress_meth ; [L43] int buf ; [L44] unsigned long tmp ; [L45] unsigned long l ; [L46] int num1 ; [L47] int cb ; [L48] int ret ; [L49] int new_state ; [L50] int state ; [L51] int skip ; [L52] int tmp___0 ; [L53] unsigned int tmp___1 = __VERIFIER_nondet_uint(); [L54] unsigned int tmp___2 = __VERIFIER_nondet_uint(); [L55] int tmp___3 = __VERIFIER_nondet_int(); [L56] int tmp___4 = __VERIFIER_nondet_int(); [L57] int tmp___5 = __VERIFIER_nondet_int(); [L58] int tmp___6 = __VERIFIER_nondet_int(); [L59] int tmp___7 = __VERIFIER_nondet_int(); [L60] int tmp___8 = __VERIFIER_nondet_int(); [L61] int tmp___9 = __VERIFIER_nondet_int(); [L62] int blastFlag ; [L63] int ag_X ; [L64] int ag_Y ; [L65] int ag_Z ; [L66] int __retres60 ; [L69] s__state = 12292 [L70] blastFlag = 0 [L71] tmp = __VERIFIER_nondet_int() [L72] cb = 0 [L73] ret = -1 [L74] skip = 0 [L75] tmp___0 = 0 [L76] COND TRUE s__info_callback != 0 [L77] cb = s__info_callback [L85] s__in_handshake = s__in_handshake + 1 [L86] COND FALSE !(tmp___1 + 12288) [L95] COND FALSE !(\read(s__hit)) [L98] ag_Z = 48 [L101] COND TRUE 1 [L103] state = s__state [L104] COND TRUE s__state == 12292 [L207] s__new_session = 1 [L208] s__state = 4096 [L209] s__ctx__stats__sess_connect_renegotiate = s__ctx__stats__sess_connect_renegotiate + 1 [L214] s__server = 0 [L215] COND TRUE cb != 0 [L220] COND FALSE !(s__version + 65280 != 768) [L226] s__type = 4096 [L227] COND FALSE !((unsigned long )s__init_buf___0 == (unsigned long )((void *)0)) [L245] COND FALSE !(! tmp___4) [L251] COND FALSE !(! tmp___5) [L257] s__state = 4368 [L258] s__ctx__stats__sess_connect = s__ctx__stats__sess_connect + 1 [L259] s__init_num = 0 [L574] COND FALSE !(! s__s3__tmp__reuse_message) [L603] skip = 0 [L101] COND TRUE 1 [L103] state = s__state [L104] COND FALSE !(s__state == 12292) [L107] COND FALSE !(s__state == 16384) [L110] COND FALSE !(s__state == 4096) [L113] COND FALSE !(s__state == 20480) [L116] COND FALSE !(s__state == 4099) [L119] COND TRUE s__state == 4368 [L263] s__shutdown = 0 [L264] ret = __VERIFIER_nondet_int() [L265] COND TRUE blastFlag == 0 [L266] blastFlag = 1 [L270] COND FALSE !(ret <= 0) [L275] s__state = 4384 [L276] ag_X = s__state - 32 [L277] s__init_num = 0 [L278] COND TRUE (unsigned long )s__bbio != (unsigned long )s__wbio [L574] COND FALSE !(! s__s3__tmp__reuse_message) [L603] skip = 0 [L101] COND TRUE 1 [L103] state = s__state [L104] COND FALSE !(s__state == 12292) [L107] COND FALSE !(s__state == 16384) [L110] COND FALSE !(s__state == 4096) [L113] COND FALSE !(s__state == 20480) [L116] COND FALSE !(s__state == 4099) [L119] COND FALSE !(s__state == 4368) [L122] COND FALSE !(s__state == 4369) [L125] COND TRUE s__state == 4384 [L286] ret = __VERIFIER_nondet_int() [L287] COND TRUE blastFlag == 1 [L288] blastFlag = 2 [L296] COND FALSE !(ret <= 0) [L301] s__state = ag_X [L302] COND FALSE !(\read(s__hit)) [L305] s__state = s__state | ag_Z [L307] s__init_num = 0 [L574] COND FALSE !(! s__s3__tmp__reuse_message) [L603] skip = 0 [L101] COND TRUE 1 [L103] state = s__state [L104] COND FALSE !(s__state == 12292) [L107] COND FALSE !(s__state == 16384) [L110] COND FALSE !(s__state == 4096) [L113] COND FALSE !(s__state == 20480) [L116] COND FALSE !(s__state == 4099) [L119] COND FALSE !(s__state == 4368) [L122] COND FALSE !(s__state == 4369) [L125] COND FALSE !(s__state == 4384) [L128] COND FALSE !(s__state == 4385) [L131] COND TRUE s__state == 4400 [L311] COND TRUE (unsigned long )s__s3__tmp__new_cipher__algorithms + 256UL [L312] skip = 1 [L326] s__state = 4416 [L327] s__init_num = 0 [L574] COND FALSE !(! s__s3__tmp__reuse_message) [L603] skip = 0 [L101] COND TRUE 1 [L103] state = s__state [L104] COND FALSE !(s__state == 12292) [L107] COND FALSE !(s__state == 16384) [L110] COND FALSE !(s__state == 4096) [L113] COND FALSE !(s__state == 20480) [L116] COND FALSE !(s__state == 4099) [L119] COND FALSE !(s__state == 4368) [L122] COND FALSE !(s__state == 4369) [L125] COND FALSE !(s__state == 4384) [L128] COND FALSE !(s__state == 4385) [L131] COND FALSE !(s__state == 4400) [L134] COND FALSE !(s__state == 4401) [L137] COND TRUE s__state == 4416 [L331] ret = __VERIFIER_nondet_int() [L332] COND FALSE !(blastFlag == 3) [L337] COND FALSE !(ret <= 0) [L342] s__state = 4432 [L343] s__init_num = 0 [L344] COND FALSE !(! tmp___6) [L574] COND FALSE !(! s__s3__tmp__reuse_message) [L603] skip = 0 [L101] COND TRUE 1 [L103] state = s__state [L104] COND FALSE !(s__state == 12292) [L107] COND FALSE !(s__state == 16384) [L110] COND FALSE !(s__state == 4096) [L113] COND FALSE !(s__state == 20480) [L116] COND FALSE !(s__state == 4099) [L119] COND FALSE !(s__state == 4368) [L122] COND FALSE !(s__state == 4369) [L125] COND FALSE !(s__state == 4384) [L128] COND FALSE !(s__state == 4385) [L131] COND FALSE !(s__state == 4400) [L134] COND FALSE !(s__state == 4401) [L137] COND FALSE !(s__state == 4416) [L140] COND FALSE !(s__state == 4417) [L143] COND TRUE s__state == 4432 [L353] ret = __VERIFIER_nondet_int() [L354] COND TRUE blastFlag <= 5 [L3] __assert_fail("0", "s3_clnt_3.BV.c.cil-2a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 127 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 8.6s, OverallIterations: 11, TraceHistogramMax: 6, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1871 SDtfs, 1954 SDslu, 2167 SDs, 0 SdLazy, 1530 SolverSat, 243 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1240 GetRequests, 1207 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1012occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 256 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 729 NumberOfCodeBlocks, 729 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 1230 ConstructedInterpolants, 60 QuantifiedInterpolants, 233200 SizeOfPredicates, 11 NumberOfNonLiveVariables, 1273 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 20 InterpolantComputations, 16 PerfectInterpolantSequences, 727/828 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...