./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl/s3_srvr.blast.02.i.cil-1.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_d0ec61a0-f888-456a-80dd-c2f32afa6bc3/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_d0ec61a0-f888-456a-80dd-c2f32afa6bc3/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d0ec61a0-f888-456a-80dd-c2f32afa6bc3/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d0ec61a0-f888-456a-80dd-c2f32afa6bc3/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/openssl/s3_srvr.blast.02.i.cil-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d0ec61a0-f888-456a-80dd-c2f32afa6bc3/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d0ec61a0-f888-456a-80dd-c2f32afa6bc3/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 102517b0f8c706bb18ba594655c7ea5e5902e987 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_d0ec61a0-f888-456a-80dd-c2f32afa6bc3/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_d0ec61a0-f888-456a-80dd-c2f32afa6bc3/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d0ec61a0-f888-456a-80dd-c2f32afa6bc3/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d0ec61a0-f888-456a-80dd-c2f32afa6bc3/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/openssl/s3_srvr.blast.02.i.cil-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d0ec61a0-f888-456a-80dd-c2f32afa6bc3/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d0ec61a0-f888-456a-80dd-c2f32afa6bc3/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 102517b0f8c706bb18ba594655c7ea5e5902e987 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 19:13:41,273 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:13:41,292 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:13:41,365 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:13:41,366 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:13:41,368 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:13:41,371 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:13:41,375 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:13:41,378 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:13:41,380 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:13:41,382 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:13:41,384 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:13:41,385 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:13:41,387 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:13:41,389 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:13:41,391 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:13:41,392 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:13:41,394 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:13:41,397 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:13:41,405 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:13:41,407 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:13:41,414 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:13:41,416 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:13:41,417 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:13:41,422 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:13:41,422 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:13:41,423 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:13:41,424 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:13:41,425 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:13:41,436 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:13:41,437 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:13:41,439 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:13:41,441 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:13:41,443 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:13:41,444 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:13:41,445 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:13:41,446 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:13:41,446 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:13:41,447 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:13:41,451 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:13:41,452 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:13:41,455 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d0ec61a0-f888-456a-80dd-c2f32afa6bc3/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 19:13:41,497 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:13:41,497 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:13:41,499 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:13:41,499 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:13:41,500 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:13:41,500 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:13:41,501 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 19:13:41,501 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:13:41,501 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 19:13:41,501 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:13:41,502 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 19:13:41,502 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 19:13:41,502 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 19:13:41,503 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 19:13:41,503 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:13:41,503 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:13:41,504 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 19:13:41,504 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:13:41,504 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:13:41,505 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 19:13:41,505 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 19:13:41,505 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:13:41,506 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:13:41,506 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 19:13:41,506 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 19:13:41,506 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 19:13:41,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 19:13:41,507 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 19:13:41,507 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:13:41,508 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_d0ec61a0-f888-456a-80dd-c2f32afa6bc3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_d0ec61a0-f888-456a-80dd-c2f32afa6bc3/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 102517b0f8c706bb18ba594655c7ea5e5902e987 [2020-11-29 19:13:41,913 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:13:41,960 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:13:41,963 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:13:41,964 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:13:41,965 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:13:41,970 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d0ec61a0-f888-456a-80dd-c2f32afa6bc3/bin/uautomizer/../../sv-benchmarks/c/openssl/s3_srvr.blast.02.i.cil-1.c [2020-11-29 19:13:42,067 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d0ec61a0-f888-456a-80dd-c2f32afa6bc3/bin/uautomizer/data/59ad25424/d0e24cd88efc4d61b6a81244b76ac74b/FLAG3f25df12b [2020-11-29 19:13:42,966 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:13:42,967 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d0ec61a0-f888-456a-80dd-c2f32afa6bc3/sv-benchmarks/c/openssl/s3_srvr.blast.02.i.cil-1.c [2020-11-29 19:13:43,004 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d0ec61a0-f888-456a-80dd-c2f32afa6bc3/bin/uautomizer/data/59ad25424/d0e24cd88efc4d61b6a81244b76ac74b/FLAG3f25df12b [2020-11-29 19:13:43,106 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d0ec61a0-f888-456a-80dd-c2f32afa6bc3/bin/uautomizer/data/59ad25424/d0e24cd88efc4d61b6a81244b76ac74b [2020-11-29 19:13:43,109 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:13:43,111 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:13:43,113 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:13:43,113 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:13:43,117 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:13:43,119 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:13:43" (1/1) ... [2020-11-29 19:13:43,121 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d0052e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:13:43, skipping insertion in model container [2020-11-29 19:13:43,122 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:13:43" (1/1) ... [2020-11-29 19:13:43,131 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:13:43,199 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:13:43,784 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:13:43,824 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:13:44,022 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:13:44,055 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:13:44,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:13:44 WrapperNode [2020-11-29 19:13:44,056 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:13:44,057 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:13:44,058 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:13:44,058 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:13:44,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:13:44" (1/1) ... [2020-11-29 19:13:44,123 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:13:44" (1/1) ... [2020-11-29 19:13:44,209 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:13:44,210 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:13:44,211 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:13:44,212 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:13:44,223 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:13:44" (1/1) ... [2020-11-29 19:13:44,223 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:13:44" (1/1) ... [2020-11-29 19:13:44,253 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:13:44" (1/1) ... [2020-11-29 19:13:44,254 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:13:44" (1/1) ... [2020-11-29 19:13:44,333 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:13:44" (1/1) ... [2020-11-29 19:13:44,347 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:13:44" (1/1) ... [2020-11-29 19:13:44,366 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:13:44" (1/1) ... [2020-11-29 19:13:44,373 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:13:44,387 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:13:44,387 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:13:44,387 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:13:44,388 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:13:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0ec61a0-f888-456a-80dd-c2f32afa6bc3/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 19:13:44,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-29 19:13:44,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 19:13:44,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 19:13:44,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 19:13:44,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-29 19:13:44,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 19:13:44,501 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-29 19:13:44,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:13:44,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:13:44,838 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-11-29 19:13:46,056 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-11-29 19:13:46,057 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-11-29 19:13:46,075 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:13:46,075 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-29 19:13:46,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:13:46 BoogieIcfgContainer [2020-11-29 19:13:46,079 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:13:46,084 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 19:13:46,084 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 19:13:46,088 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 19:13:46,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:13:43" (1/3) ... [2020-11-29 19:13:46,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46950d88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:13:46, skipping insertion in model container [2020-11-29 19:13:46,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:13:44" (2/3) ... [2020-11-29 19:13:46,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46950d88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:13:46, skipping insertion in model container [2020-11-29 19:13:46,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:13:46" (3/3) ... [2020-11-29 19:13:46,093 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.02.i.cil-1.c [2020-11-29 19:13:46,107 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 19:13:46,112 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 19:13:46,127 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 19:13:46,170 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 19:13:46,171 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 19:13:46,171 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 19:13:46,171 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:13:46,171 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:13:46,171 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 19:13:46,171 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:13:46,171 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 19:13:46,192 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states. [2020-11-29 19:13:46,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-29 19:13:46,204 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:13:46,205 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:13:46,206 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:13:46,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:46,212 INFO L82 PathProgramCache]: Analyzing trace with hash 522836684, now seen corresponding path program 1 times [2020-11-29 19:13:46,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:46,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425581274] [2020-11-29 19:13:46,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:46,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:46,654 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 19:13:46,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425581274] [2020-11-29 19:13:46,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:13:46,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:13:46,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156080743] [2020-11-29 19:13:46,666 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:13:46,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:13:46,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:13:46,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:13:46,689 INFO L87 Difference]: Start difference. First operand 144 states. Second operand 4 states. [2020-11-29 19:13:47,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:13:47,435 INFO L93 Difference]: Finished difference Result 314 states and 528 transitions. [2020-11-29 19:13:47,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:13:47,437 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-11-29 19:13:47,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:13:47,476 INFO L225 Difference]: With dead ends: 314 [2020-11-29 19:13:47,477 INFO L226 Difference]: Without dead ends: 158 [2020-11-29 19:13:47,481 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:13:47,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-11-29 19:13:47,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 141. [2020-11-29 19:13:47,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-11-29 19:13:47,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 216 transitions. [2020-11-29 19:13:47,543 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 216 transitions. Word has length 45 [2020-11-29 19:13:47,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:13:47,544 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 216 transitions. [2020-11-29 19:13:47,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:13:47,544 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 216 transitions. [2020-11-29 19:13:47,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-11-29 19:13:47,548 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:13:47,548 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:13:47,549 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 19:13:47,549 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:13:47,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:47,550 INFO L82 PathProgramCache]: Analyzing trace with hash 968097209, now seen corresponding path program 1 times [2020-11-29 19:13:47,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:47,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513626638] [2020-11-29 19:13:47,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:47,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:47,850 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:47,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513626638] [2020-11-29 19:13:47,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:13:47,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:13:47,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738945882] [2020-11-29 19:13:47,853 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:13:47,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:13:47,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:13:47,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:13:47,854 INFO L87 Difference]: Start difference. First operand 141 states and 216 transitions. Second operand 4 states. [2020-11-29 19:13:48,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:13:48,406 INFO L93 Difference]: Finished difference Result 280 states and 423 transitions. [2020-11-29 19:13:48,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:13:48,407 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-11-29 19:13:48,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:13:48,410 INFO L225 Difference]: With dead ends: 280 [2020-11-29 19:13:48,410 INFO L226 Difference]: Without dead ends: 158 [2020-11-29 19:13:48,412 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:13:48,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-11-29 19:13:48,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 141. [2020-11-29 19:13:48,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-11-29 19:13:48,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 215 transitions. [2020-11-29 19:13:48,427 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 215 transitions. Word has length 58 [2020-11-29 19:13:48,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:13:48,427 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 215 transitions. [2020-11-29 19:13:48,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:13:48,428 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 215 transitions. [2020-11-29 19:13:48,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-11-29 19:13:48,431 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:13:48,431 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, 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 19:13:48,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 19:13:48,432 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:13:48,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:48,433 INFO L82 PathProgramCache]: Analyzing trace with hash -461266997, now seen corresponding path program 1 times [2020-11-29 19:13:48,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:48,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536578831] [2020-11-29 19:13:48,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:48,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:48,647 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 19:13:48,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536578831] [2020-11-29 19:13:48,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:13:48,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:13:48,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986318511] [2020-11-29 19:13:48,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:13:48,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:13:48,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:13:48,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:13:48,652 INFO L87 Difference]: Start difference. First operand 141 states and 215 transitions. Second operand 4 states. [2020-11-29 19:13:49,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:13:49,179 INFO L93 Difference]: Finished difference Result 279 states and 421 transitions. [2020-11-29 19:13:49,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:13:49,180 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-11-29 19:13:49,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:13:49,183 INFO L225 Difference]: With dead ends: 279 [2020-11-29 19:13:49,183 INFO L226 Difference]: Without dead ends: 157 [2020-11-29 19:13:49,184 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:13:49,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-11-29 19:13:49,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 141. [2020-11-29 19:13:49,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-11-29 19:13:49,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 214 transitions. [2020-11-29 19:13:49,198 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 214 transitions. Word has length 59 [2020-11-29 19:13:49,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:13:49,199 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 214 transitions. [2020-11-29 19:13:49,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:13:49,199 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 214 transitions. [2020-11-29 19:13:49,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-11-29 19:13:49,203 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:13:49,203 INFO L422 BasicCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:13:49,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 19:13:49,204 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:13:49,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:49,205 INFO L82 PathProgramCache]: Analyzing trace with hash 881926454, now seen corresponding path program 1 times [2020-11-29 19:13:49,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:49,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417062823] [2020-11-29 19:13:49,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:49,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:49,317 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:49,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417062823] [2020-11-29 19:13:49,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:13:49,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:13:49,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038097455] [2020-11-29 19:13:49,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:13:49,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:13:49,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:13:49,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:13:49,321 INFO L87 Difference]: Start difference. First operand 141 states and 214 transitions. Second operand 4 states. [2020-11-29 19:13:49,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:13:49,846 INFO L93 Difference]: Finished difference Result 277 states and 418 transitions. [2020-11-29 19:13:49,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:13:49,846 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-11-29 19:13:49,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:13:49,848 INFO L225 Difference]: With dead ends: 277 [2020-11-29 19:13:49,848 INFO L226 Difference]: Without dead ends: 155 [2020-11-29 19:13:49,849 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:13:49,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-11-29 19:13:49,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 141. [2020-11-29 19:13:49,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-11-29 19:13:49,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 213 transitions. [2020-11-29 19:13:49,861 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 213 transitions. Word has length 59 [2020-11-29 19:13:49,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:13:49,861 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 213 transitions. [2020-11-29 19:13:49,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:13:49,861 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 213 transitions. [2020-11-29 19:13:49,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-11-29 19:13:49,865 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:13:49,865 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:13:49,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 19:13:49,865 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:13:49,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:49,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1831274614, now seen corresponding path program 1 times [2020-11-29 19:13:49,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:49,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217318367] [2020-11-29 19:13:49,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:49,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:49,959 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:49,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217318367] [2020-11-29 19:13:49,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:13:49,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:13:49,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050360030] [2020-11-29 19:13:49,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:13:49,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:13:49,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:13:49,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:13:49,962 INFO L87 Difference]: Start difference. First operand 141 states and 213 transitions. Second operand 4 states. [2020-11-29 19:13:50,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:13:50,432 INFO L93 Difference]: Finished difference Result 276 states and 416 transitions. [2020-11-29 19:13:50,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:13:50,433 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-11-29 19:13:50,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:13:50,434 INFO L225 Difference]: With dead ends: 276 [2020-11-29 19:13:50,435 INFO L226 Difference]: Without dead ends: 154 [2020-11-29 19:13:50,435 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:13:50,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-11-29 19:13:50,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 141. [2020-11-29 19:13:50,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-11-29 19:13:50,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 212 transitions. [2020-11-29 19:13:50,450 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 212 transitions. Word has length 59 [2020-11-29 19:13:50,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:13:50,450 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 212 transitions. [2020-11-29 19:13:50,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:13:50,450 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 212 transitions. [2020-11-29 19:13:50,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-11-29 19:13:50,453 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:13:50,453 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:13:50,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 19:13:50,454 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:13:50,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:50,454 INFO L82 PathProgramCache]: Analyzing trace with hash 376743775, now seen corresponding path program 1 times [2020-11-29 19:13:50,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:50,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845796906] [2020-11-29 19:13:50,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:50,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:50,595 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:50,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845796906] [2020-11-29 19:13:50,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:13:50,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:13:50,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467116859] [2020-11-29 19:13:50,597 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:13:50,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:13:50,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:13:50,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:13:50,598 INFO L87 Difference]: Start difference. First operand 141 states and 212 transitions. Second operand 4 states. [2020-11-29 19:13:51,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:13:51,083 INFO L93 Difference]: Finished difference Result 276 states and 415 transitions. [2020-11-29 19:13:51,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:13:51,084 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-11-29 19:13:51,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:13:51,086 INFO L225 Difference]: With dead ends: 276 [2020-11-29 19:13:51,086 INFO L226 Difference]: Without dead ends: 154 [2020-11-29 19:13:51,087 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:13:51,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-11-29 19:13:51,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 141. [2020-11-29 19:13:51,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-11-29 19:13:51,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 211 transitions. [2020-11-29 19:13:51,097 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 211 transitions. Word has length 59 [2020-11-29 19:13:51,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:13:51,098 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 211 transitions. [2020-11-29 19:13:51,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:13:51,098 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 211 transitions. [2020-11-29 19:13:51,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-11-29 19:13:51,101 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:13:51,101 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:13:51,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 19:13:51,102 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:13:51,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:51,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1718254146, now seen corresponding path program 1 times [2020-11-29 19:13:51,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:51,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881613977] [2020-11-29 19:13:51,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:51,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:51,215 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:51,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881613977] [2020-11-29 19:13:51,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:13:51,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:13:51,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550322654] [2020-11-29 19:13:51,217 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:13:51,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:13:51,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:13:51,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:13:51,218 INFO L87 Difference]: Start difference. First operand 141 states and 211 transitions. Second operand 4 states. [2020-11-29 19:13:51,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:13:51,657 INFO L93 Difference]: Finished difference Result 276 states and 414 transitions. [2020-11-29 19:13:51,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:13:51,658 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-11-29 19:13:51,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:13:51,659 INFO L225 Difference]: With dead ends: 276 [2020-11-29 19:13:51,660 INFO L226 Difference]: Without dead ends: 154 [2020-11-29 19:13:51,660 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:13:51,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-11-29 19:13:51,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 141. [2020-11-29 19:13:51,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-11-29 19:13:51,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 210 transitions. [2020-11-29 19:13:51,668 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 210 transitions. Word has length 60 [2020-11-29 19:13:51,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:13:51,669 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 210 transitions. [2020-11-29 19:13:51,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:13:51,669 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 210 transitions. [2020-11-29 19:13:51,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-11-29 19:13:51,670 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:13:51,670 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:13:51,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-29 19:13:51,671 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:13:51,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:51,672 INFO L82 PathProgramCache]: Analyzing trace with hash 316605892, now seen corresponding path program 1 times [2020-11-29 19:13:51,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:51,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116728017] [2020-11-29 19:13:51,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:51,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:51,743 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:51,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116728017] [2020-11-29 19:13:51,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:13:51,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:13:51,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365388165] [2020-11-29 19:13:51,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:13:51,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:13:51,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:13:51,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:13:51,746 INFO L87 Difference]: Start difference. First operand 141 states and 210 transitions. Second operand 4 states. [2020-11-29 19:13:52,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:13:52,184 INFO L93 Difference]: Finished difference Result 276 states and 413 transitions. [2020-11-29 19:13:52,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:13:52,184 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2020-11-29 19:13:52,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:13:52,186 INFO L225 Difference]: With dead ends: 276 [2020-11-29 19:13:52,186 INFO L226 Difference]: Without dead ends: 154 [2020-11-29 19:13:52,187 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:13:52,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-11-29 19:13:52,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 141. [2020-11-29 19:13:52,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-11-29 19:13:52,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 209 transitions. [2020-11-29 19:13:52,193 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 209 transitions. Word has length 61 [2020-11-29 19:13:52,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:13:52,194 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 209 transitions. [2020-11-29 19:13:52,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:13:52,194 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 209 transitions. [2020-11-29 19:13:52,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-11-29 19:13:52,195 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:13:52,195 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:13:52,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-29 19:13:52,196 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:13:52,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:52,196 INFO L82 PathProgramCache]: Analyzing trace with hash -223613817, now seen corresponding path program 1 times [2020-11-29 19:13:52,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:52,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607086411] [2020-11-29 19:13:52,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:52,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:52,332 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:52,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607086411] [2020-11-29 19:13:52,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:13:52,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:13:52,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988481029] [2020-11-29 19:13:52,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:13:52,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:13:52,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:13:52,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:13:52,335 INFO L87 Difference]: Start difference. First operand 141 states and 209 transitions. Second operand 4 states. [2020-11-29 19:13:52,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:13:52,733 INFO L93 Difference]: Finished difference Result 266 states and 399 transitions. [2020-11-29 19:13:52,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:13:52,735 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-11-29 19:13:52,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:13:52,737 INFO L225 Difference]: With dead ends: 266 [2020-11-29 19:13:52,737 INFO L226 Difference]: Without dead ends: 144 [2020-11-29 19:13:52,738 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:13:52,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-11-29 19:13:52,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 141. [2020-11-29 19:13:52,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-11-29 19:13:52,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 208 transitions. [2020-11-29 19:13:52,744 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 208 transitions. Word has length 62 [2020-11-29 19:13:52,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:13:52,745 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 208 transitions. [2020-11-29 19:13:52,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:13:52,745 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 208 transitions. [2020-11-29 19:13:52,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-11-29 19:13:52,749 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:13:52,749 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:13:52,752 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-29 19:13:52,753 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:13:52,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:52,754 INFO L82 PathProgramCache]: Analyzing trace with hash 176537583, now seen corresponding path program 1 times [2020-11-29 19:13:52,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:52,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134834171] [2020-11-29 19:13:52,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:52,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:52,890 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:52,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134834171] [2020-11-29 19:13:52,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:13:52,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:13:52,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253444943] [2020-11-29 19:13:52,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:13:52,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:13:52,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:13:52,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:13:52,903 INFO L87 Difference]: Start difference. First operand 141 states and 208 transitions. Second operand 4 states. [2020-11-29 19:13:53,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:13:53,347 INFO L93 Difference]: Finished difference Result 307 states and 462 transitions. [2020-11-29 19:13:53,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:13:53,348 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-11-29 19:13:53,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:13:53,350 INFO L225 Difference]: With dead ends: 307 [2020-11-29 19:13:53,350 INFO L226 Difference]: Without dead ends: 185 [2020-11-29 19:13:53,351 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:13:53,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-11-29 19:13:53,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 163. [2020-11-29 19:13:53,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-11-29 19:13:53,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 246 transitions. [2020-11-29 19:13:53,364 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 246 transitions. Word has length 62 [2020-11-29 19:13:53,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:13:53,364 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 246 transitions. [2020-11-29 19:13:53,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:13:53,365 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 246 transitions. [2020-11-29 19:13:53,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-11-29 19:13:53,366 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:13:53,366 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:13:53,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-29 19:13:53,367 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:13:53,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:53,367 INFO L82 PathProgramCache]: Analyzing trace with hash 551995766, now seen corresponding path program 1 times [2020-11-29 19:13:53,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:53,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519224913] [2020-11-29 19:13:53,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:53,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:53,489 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:53,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519224913] [2020-11-29 19:13:53,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:13:53,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:13:53,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537023378] [2020-11-29 19:13:53,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:13:53,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:13:53,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:13:53,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:13:53,495 INFO L87 Difference]: Start difference. First operand 163 states and 246 transitions. Second operand 4 states. [2020-11-29 19:13:54,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:13:54,012 INFO L93 Difference]: Finished difference Result 329 states and 499 transitions. [2020-11-29 19:13:54,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:13:54,013 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 75 [2020-11-29 19:13:54,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:13:54,015 INFO L225 Difference]: With dead ends: 329 [2020-11-29 19:13:54,015 INFO L226 Difference]: Without dead ends: 185 [2020-11-29 19:13:54,016 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:13:54,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-11-29 19:13:54,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 163. [2020-11-29 19:13:54,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-11-29 19:13:54,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 245 transitions. [2020-11-29 19:13:54,028 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 245 transitions. Word has length 75 [2020-11-29 19:13:54,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:13:54,029 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 245 transitions. [2020-11-29 19:13:54,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:13:54,029 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 245 transitions. [2020-11-29 19:13:54,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-11-29 19:13:54,030 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:13:54,031 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:13:54,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-29 19:13:54,031 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:13:54,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:54,032 INFO L82 PathProgramCache]: Analyzing trace with hash -475509842, now seen corresponding path program 1 times [2020-11-29 19:13:54,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:54,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972058367] [2020-11-29 19:13:54,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:54,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:54,095 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:54,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972058367] [2020-11-29 19:13:54,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:13:54,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:13:54,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077022631] [2020-11-29 19:13:54,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:13:54,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:13:54,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:13:54,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:13:54,098 INFO L87 Difference]: Start difference. First operand 163 states and 245 transitions. Second operand 4 states. [2020-11-29 19:13:54,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:13:54,525 INFO L93 Difference]: Finished difference Result 328 states and 496 transitions. [2020-11-29 19:13:54,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:13:54,527 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 76 [2020-11-29 19:13:54,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:13:54,529 INFO L225 Difference]: With dead ends: 328 [2020-11-29 19:13:54,529 INFO L226 Difference]: Without dead ends: 184 [2020-11-29 19:13:54,530 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:13:54,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-11-29 19:13:54,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 163. [2020-11-29 19:13:54,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-11-29 19:13:54,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 244 transitions. [2020-11-29 19:13:54,539 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 244 transitions. Word has length 76 [2020-11-29 19:13:54,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:13:54,540 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 244 transitions. [2020-11-29 19:13:54,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:13:54,540 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 244 transitions. [2020-11-29 19:13:54,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-11-29 19:13:54,542 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:13:54,542 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:13:54,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-29 19:13:54,542 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:13:54,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:54,543 INFO L82 PathProgramCache]: Analyzing trace with hash 867683609, now seen corresponding path program 1 times [2020-11-29 19:13:54,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:54,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293722739] [2020-11-29 19:13:54,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:54,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:54,617 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:54,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293722739] [2020-11-29 19:13:54,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:13:54,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:13:54,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853228117] [2020-11-29 19:13:54,620 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:13:54,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:13:54,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:13:54,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:13:54,622 INFO L87 Difference]: Start difference. First operand 163 states and 244 transitions. Second operand 4 states. [2020-11-29 19:13:55,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:13:55,109 INFO L93 Difference]: Finished difference Result 326 states and 492 transitions. [2020-11-29 19:13:55,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:13:55,110 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 76 [2020-11-29 19:13:55,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:13:55,112 INFO L225 Difference]: With dead ends: 326 [2020-11-29 19:13:55,112 INFO L226 Difference]: Without dead ends: 182 [2020-11-29 19:13:55,113 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:13:55,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-11-29 19:13:55,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 163. [2020-11-29 19:13:55,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-11-29 19:13:55,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 243 transitions. [2020-11-29 19:13:55,121 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 243 transitions. Word has length 76 [2020-11-29 19:13:55,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:13:55,123 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 243 transitions. [2020-11-29 19:13:55,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:13:55,123 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 243 transitions. [2020-11-29 19:13:55,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-11-29 19:13:55,124 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:13:55,124 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:13:55,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-29 19:13:55,125 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:13:55,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:55,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1817031769, now seen corresponding path program 1 times [2020-11-29 19:13:55,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:55,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143373315] [2020-11-29 19:13:55,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:55,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:55,203 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:55,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143373315] [2020-11-29 19:13:55,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:13:55,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:13:55,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720706784] [2020-11-29 19:13:55,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:13:55,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:13:55,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:13:55,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:13:55,206 INFO L87 Difference]: Start difference. First operand 163 states and 243 transitions. Second operand 4 states. [2020-11-29 19:13:55,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:13:55,655 INFO L93 Difference]: Finished difference Result 325 states and 489 transitions. [2020-11-29 19:13:55,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:13:55,656 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 76 [2020-11-29 19:13:55,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:13:55,658 INFO L225 Difference]: With dead ends: 325 [2020-11-29 19:13:55,658 INFO L226 Difference]: Without dead ends: 181 [2020-11-29 19:13:55,659 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:13:55,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-11-29 19:13:55,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 163. [2020-11-29 19:13:55,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-11-29 19:13:55,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 242 transitions. [2020-11-29 19:13:55,666 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 242 transitions. Word has length 76 [2020-11-29 19:13:55,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:13:55,666 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 242 transitions. [2020-11-29 19:13:55,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:13:55,667 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 242 transitions. [2020-11-29 19:13:55,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-11-29 19:13:55,668 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:13:55,668 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:13:55,668 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-29 19:13:55,668 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:13:55,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:55,669 INFO L82 PathProgramCache]: Analyzing trace with hash 362500930, now seen corresponding path program 1 times [2020-11-29 19:13:55,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:55,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578980800] [2020-11-29 19:13:55,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:55,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:55,725 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:55,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578980800] [2020-11-29 19:13:55,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:13:55,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:13:55,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785580294] [2020-11-29 19:13:55,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:13:55,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:13:55,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:13:55,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:13:55,727 INFO L87 Difference]: Start difference. First operand 163 states and 242 transitions. Second operand 4 states. [2020-11-29 19:13:56,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:13:56,180 INFO L93 Difference]: Finished difference Result 325 states and 487 transitions. [2020-11-29 19:13:56,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:13:56,181 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 76 [2020-11-29 19:13:56,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:13:56,183 INFO L225 Difference]: With dead ends: 325 [2020-11-29 19:13:56,183 INFO L226 Difference]: Without dead ends: 181 [2020-11-29 19:13:56,184 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:13:56,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-11-29 19:13:56,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 163. [2020-11-29 19:13:56,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-11-29 19:13:56,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 241 transitions. [2020-11-29 19:13:56,195 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 241 transitions. Word has length 76 [2020-11-29 19:13:56,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:13:56,196 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 241 transitions. [2020-11-29 19:13:56,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:13:56,196 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 241 transitions. [2020-11-29 19:13:56,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-11-29 19:13:56,198 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:13:56,198 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:13:56,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-29 19:13:56,199 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:13:56,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:56,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1276725951, now seen corresponding path program 1 times [2020-11-29 19:13:56,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:56,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643158232] [2020-11-29 19:13:56,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:56,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:56,293 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:56,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643158232] [2020-11-29 19:13:56,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:13:56,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:13:56,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771414329] [2020-11-29 19:13:56,297 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:13:56,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:13:56,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:13:56,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:13:56,303 INFO L87 Difference]: Start difference. First operand 163 states and 241 transitions. Second operand 4 states. [2020-11-29 19:13:56,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:13:56,759 INFO L93 Difference]: Finished difference Result 325 states and 485 transitions. [2020-11-29 19:13:56,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:13:56,760 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 77 [2020-11-29 19:13:56,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:13:56,762 INFO L225 Difference]: With dead ends: 325 [2020-11-29 19:13:56,762 INFO L226 Difference]: Without dead ends: 181 [2020-11-29 19:13:56,763 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:13:56,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-11-29 19:13:56,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 163. [2020-11-29 19:13:56,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-11-29 19:13:56,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 240 transitions. [2020-11-29 19:13:56,774 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 240 transitions. Word has length 77 [2020-11-29 19:13:56,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:13:56,774 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 240 transitions. [2020-11-29 19:13:56,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:13:56,774 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 240 transitions. [2020-11-29 19:13:56,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-11-29 19:13:56,775 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:13:56,776 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:13:56,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-29 19:13:56,776 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:13:56,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:56,777 INFO L82 PathProgramCache]: Analyzing trace with hash -485866265, now seen corresponding path program 1 times [2020-11-29 19:13:56,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:56,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001801951] [2020-11-29 19:13:56,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:56,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:56,856 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:56,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001801951] [2020-11-29 19:13:56,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:13:56,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:13:56,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723279672] [2020-11-29 19:13:56,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:13:56,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:13:56,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:13:56,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:13:56,861 INFO L87 Difference]: Start difference. First operand 163 states and 240 transitions. Second operand 4 states. [2020-11-29 19:13:57,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:13:57,327 INFO L93 Difference]: Finished difference Result 325 states and 483 transitions. [2020-11-29 19:13:57,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:13:57,328 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2020-11-29 19:13:57,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:13:57,330 INFO L225 Difference]: With dead ends: 325 [2020-11-29 19:13:57,330 INFO L226 Difference]: Without dead ends: 181 [2020-11-29 19:13:57,331 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:13:57,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-11-29 19:13:57,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 163. [2020-11-29 19:13:57,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-11-29 19:13:57,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 239 transitions. [2020-11-29 19:13:57,340 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 239 transitions. Word has length 78 [2020-11-29 19:13:57,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:13:57,340 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 239 transitions. [2020-11-29 19:13:57,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:13:57,341 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 239 transitions. [2020-11-29 19:13:57,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-11-29 19:13:57,342 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:13:57,342 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:13:57,342 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-11-29 19:13:57,343 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:13:57,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:57,343 INFO L82 PathProgramCache]: Analyzing trace with hash 669553092, now seen corresponding path program 1 times [2020-11-29 19:13:57,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:57,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651274430] [2020-11-29 19:13:57,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:57,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:57,433 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:57,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651274430] [2020-11-29 19:13:57,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:13:57,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:13:57,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193234129] [2020-11-29 19:13:57,436 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:13:57,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:13:57,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:13:57,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:13:57,438 INFO L87 Difference]: Start difference. First operand 163 states and 239 transitions. Second operand 4 states. [2020-11-29 19:13:57,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:13:57,842 INFO L93 Difference]: Finished difference Result 315 states and 468 transitions. [2020-11-29 19:13:57,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:13:57,843 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 79 [2020-11-29 19:13:57,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:13:57,844 INFO L225 Difference]: With dead ends: 315 [2020-11-29 19:13:57,844 INFO L226 Difference]: Without dead ends: 171 [2020-11-29 19:13:57,845 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:13:57,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-11-29 19:13:57,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 163. [2020-11-29 19:13:57,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-11-29 19:13:57,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 238 transitions. [2020-11-29 19:13:57,852 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 238 transitions. Word has length 79 [2020-11-29 19:13:57,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:13:57,852 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 238 transitions. [2020-11-29 19:13:57,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:13:57,853 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 238 transitions. [2020-11-29 19:13:57,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-11-29 19:13:57,854 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:13:57,854 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:13:57,854 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-11-29 19:13:57,854 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:13:57,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:57,855 INFO L82 PathProgramCache]: Analyzing trace with hash 719124867, now seen corresponding path program 1 times [2020-11-29 19:13:57,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:57,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685007030] [2020-11-29 19:13:57,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:57,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:57,969 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 19:13:57,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685007030] [2020-11-29 19:13:57,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:13:57,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:13:57,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073909697] [2020-11-29 19:13:57,972 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:13:57,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:13:57,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:13:57,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:13:57,973 INFO L87 Difference]: Start difference. First operand 163 states and 238 transitions. Second operand 4 states. [2020-11-29 19:13:58,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:13:58,618 INFO L93 Difference]: Finished difference Result 403 states and 603 transitions. [2020-11-29 19:13:58,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:13:58,619 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 84 [2020-11-29 19:13:58,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:13:58,621 INFO L225 Difference]: With dead ends: 403 [2020-11-29 19:13:58,621 INFO L226 Difference]: Without dead ends: 259 [2020-11-29 19:13:58,622 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:13:58,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-11-29 19:13:58,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 206. [2020-11-29 19:13:58,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-11-29 19:13:58,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 316 transitions. [2020-11-29 19:13:58,637 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 316 transitions. Word has length 84 [2020-11-29 19:13:58,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:13:58,637 INFO L481 AbstractCegarLoop]: Abstraction has 206 states and 316 transitions. [2020-11-29 19:13:58,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:13:58,638 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 316 transitions. [2020-11-29 19:13:58,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-11-29 19:13:58,639 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:13:58,639 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:13:58,640 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-11-29 19:13:58,640 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:13:58,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:58,643 INFO L82 PathProgramCache]: Analyzing trace with hash -178268411, now seen corresponding path program 1 times [2020-11-29 19:13:58,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:58,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513553037] [2020-11-29 19:13:58,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:58,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:58,757 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 19:13:58,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513553037] [2020-11-29 19:13:58,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:13:58,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:13:58,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724916728] [2020-11-29 19:13:58,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:13:58,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:13:58,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:13:58,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:13:58,760 INFO L87 Difference]: Start difference. First operand 206 states and 316 transitions. Second operand 4 states. [2020-11-29 19:13:59,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:13:59,325 INFO L93 Difference]: Finished difference Result 443 states and 687 transitions. [2020-11-29 19:13:59,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:13:59,326 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 84 [2020-11-29 19:13:59,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:13:59,328 INFO L225 Difference]: With dead ends: 443 [2020-11-29 19:13:59,328 INFO L226 Difference]: Without dead ends: 256 [2020-11-29 19:13:59,329 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:13:59,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-11-29 19:13:59,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 230. [2020-11-29 19:13:59,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-11-29 19:13:59,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 358 transitions. [2020-11-29 19:13:59,339 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 358 transitions. Word has length 84 [2020-11-29 19:13:59,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:13:59,340 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 358 transitions. [2020-11-29 19:13:59,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:13:59,340 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 358 transitions. [2020-11-29 19:13:59,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-11-29 19:13:59,342 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:13:59,342 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:13:59,342 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-11-29 19:13:59,343 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:13:59,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:59,343 INFO L82 PathProgramCache]: Analyzing trace with hash 2081210466, now seen corresponding path program 1 times [2020-11-29 19:13:59,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:59,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536836913] [2020-11-29 19:13:59,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:59,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:59,428 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 19:13:59,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536836913] [2020-11-29 19:13:59,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:13:59,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:13:59,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546528725] [2020-11-29 19:13:59,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:13:59,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:13:59,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:13:59,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:13:59,431 INFO L87 Difference]: Start difference. First operand 230 states and 358 transitions. Second operand 4 states. [2020-11-29 19:14:00,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:14:00,128 INFO L93 Difference]: Finished difference Result 494 states and 764 transitions. [2020-11-29 19:14:00,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:14:00,129 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 97 [2020-11-29 19:14:00,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:14:00,131 INFO L225 Difference]: With dead ends: 494 [2020-11-29 19:14:00,131 INFO L226 Difference]: Without dead ends: 283 [2020-11-29 19:14:00,132 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:14:00,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-11-29 19:14:00,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 230. [2020-11-29 19:14:00,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-11-29 19:14:00,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 357 transitions. [2020-11-29 19:14:00,142 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 357 transitions. Word has length 97 [2020-11-29 19:14:00,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:14:00,143 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 357 transitions. [2020-11-29 19:14:00,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:14:00,155 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 357 transitions. [2020-11-29 19:14:00,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-11-29 19:14:00,156 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:14:00,157 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:14:00,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-11-29 19:14:00,157 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:14:00,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:14:00,158 INFO L82 PathProgramCache]: Analyzing trace with hash 2121885216, now seen corresponding path program 1 times [2020-11-29 19:14:00,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:14:00,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725452721] [2020-11-29 19:14:00,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:14:00,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:14:00,245 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 19:14:00,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725452721] [2020-11-29 19:14:00,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:14:00,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:14:00,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458810429] [2020-11-29 19:14:00,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:14:00,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:14:00,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:14:00,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:14:00,248 INFO L87 Difference]: Start difference. First operand 230 states and 357 transitions. Second operand 4 states. [2020-11-29 19:14:00,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:14:00,693 INFO L93 Difference]: Finished difference Result 467 states and 726 transitions. [2020-11-29 19:14:00,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:14:00,697 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 97 [2020-11-29 19:14:00,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:14:00,699 INFO L225 Difference]: With dead ends: 467 [2020-11-29 19:14:00,700 INFO L226 Difference]: Without dead ends: 256 [2020-11-29 19:14:00,700 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:14:00,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-11-29 19:14:00,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 230. [2020-11-29 19:14:00,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-11-29 19:14:00,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 356 transitions. [2020-11-29 19:14:00,710 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 356 transitions. Word has length 97 [2020-11-29 19:14:00,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:14:00,711 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 356 transitions. [2020-11-29 19:14:00,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:14:00,711 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 356 transitions. [2020-11-29 19:14:00,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-11-29 19:14:00,713 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:14:00,713 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:14:00,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-11-29 19:14:00,714 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:14:00,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:14:00,714 INFO L82 PathProgramCache]: Analyzing trace with hash -314494398, now seen corresponding path program 1 times [2020-11-29 19:14:00,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:14:00,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892448705] [2020-11-29 19:14:00,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:14:00,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:14:00,802 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 19:14:00,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892448705] [2020-11-29 19:14:00,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:14:00,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:14:00,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641959462] [2020-11-29 19:14:00,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:14:00,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:14:00,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:14:00,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:14:00,805 INFO L87 Difference]: Start difference. First operand 230 states and 356 transitions. Second operand 4 states. [2020-11-29 19:14:01,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:14:01,399 INFO L93 Difference]: Finished difference Result 493 states and 759 transitions. [2020-11-29 19:14:01,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:14:01,399 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2020-11-29 19:14:01,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:14:01,402 INFO L225 Difference]: With dead ends: 493 [2020-11-29 19:14:01,402 INFO L226 Difference]: Without dead ends: 282 [2020-11-29 19:14:01,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:14:01,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-11-29 19:14:01,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 230. [2020-11-29 19:14:01,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-11-29 19:14:01,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 355 transitions. [2020-11-29 19:14:01,412 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 355 transitions. Word has length 98 [2020-11-29 19:14:01,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:14:01,413 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 355 transitions. [2020-11-29 19:14:01,413 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:14:01,413 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 355 transitions. [2020-11-29 19:14:01,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-11-29 19:14:01,415 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:14:01,415 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:14:01,415 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-11-29 19:14:01,415 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:14:01,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:14:01,416 INFO L82 PathProgramCache]: Analyzing trace with hash 1028699053, now seen corresponding path program 1 times [2020-11-29 19:14:01,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:14:01,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530901489] [2020-11-29 19:14:01,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:14:01,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:14:01,504 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 19:14:01,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530901489] [2020-11-29 19:14:01,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:14:01,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:14:01,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579786897] [2020-11-29 19:14:01,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:14:01,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:14:01,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:14:01,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:14:01,507 INFO L87 Difference]: Start difference. First operand 230 states and 355 transitions. Second operand 4 states. [2020-11-29 19:14:02,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:14:02,113 INFO L93 Difference]: Finished difference Result 491 states and 755 transitions. [2020-11-29 19:14:02,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:14:02,114 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2020-11-29 19:14:02,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:14:02,116 INFO L225 Difference]: With dead ends: 491 [2020-11-29 19:14:02,117 INFO L226 Difference]: Without dead ends: 280 [2020-11-29 19:14:02,117 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:14:02,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-11-29 19:14:02,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 230. [2020-11-29 19:14:02,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-11-29 19:14:02,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 354 transitions. [2020-11-29 19:14:02,127 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 354 transitions. Word has length 98 [2020-11-29 19:14:02,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:14:02,128 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 354 transitions. [2020-11-29 19:14:02,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:14:02,128 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 354 transitions. [2020-11-29 19:14:02,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-11-29 19:14:02,129 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:14:02,130 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:14:02,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-11-29 19:14:02,130 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:14:02,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:14:02,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1978047213, now seen corresponding path program 1 times [2020-11-29 19:14:02,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:14:02,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513982321] [2020-11-29 19:14:02,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:14:02,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:14:02,221 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 19:14:02,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513982321] [2020-11-29 19:14:02,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:14:02,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:14:02,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017341690] [2020-11-29 19:14:02,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:14:02,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:14:02,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:14:02,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:14:02,224 INFO L87 Difference]: Start difference. First operand 230 states and 354 transitions. Second operand 4 states. [2020-11-29 19:14:02,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:14:02,849 INFO L93 Difference]: Finished difference Result 490 states and 752 transitions. [2020-11-29 19:14:02,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:14:02,849 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2020-11-29 19:14:02,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:14:02,852 INFO L225 Difference]: With dead ends: 490 [2020-11-29 19:14:02,852 INFO L226 Difference]: Without dead ends: 279 [2020-11-29 19:14:02,853 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:14:02,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-11-29 19:14:02,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 230. [2020-11-29 19:14:02,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-11-29 19:14:02,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 353 transitions. [2020-11-29 19:14:02,861 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 353 transitions. Word has length 98 [2020-11-29 19:14:02,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:14:02,862 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 353 transitions. [2020-11-29 19:14:02,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:14:02,862 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 353 transitions. [2020-11-29 19:14:02,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-11-29 19:14:02,864 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:14:02,864 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:14:02,864 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-11-29 19:14:02,865 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:14:02,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:14:02,865 INFO L82 PathProgramCache]: Analyzing trace with hash 523516374, now seen corresponding path program 1 times [2020-11-29 19:14:02,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:14:02,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195208473] [2020-11-29 19:14:02,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:14:02,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:14:02,971 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-11-29 19:14:02,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195208473] [2020-11-29 19:14:02,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:14:02,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 19:14:02,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704686528] [2020-11-29 19:14:02,972 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 19:14:02,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:14:02,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 19:14:02,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:14:02,974 INFO L87 Difference]: Start difference. First operand 230 states and 353 transitions. Second operand 5 states. [2020-11-29 19:14:03,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:14:03,498 INFO L93 Difference]: Finished difference Result 462 states and 714 transitions. [2020-11-29 19:14:03,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 19:14:03,499 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-11-29 19:14:03,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:14:03,501 INFO L225 Difference]: With dead ends: 462 [2020-11-29 19:14:03,501 INFO L226 Difference]: Without dead ends: 251 [2020-11-29 19:14:03,502 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-29 19:14:03,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-11-29 19:14:03,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 250. [2020-11-29 19:14:03,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-11-29 19:14:03,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 379 transitions. [2020-11-29 19:14:03,512 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 379 transitions. Word has length 98 [2020-11-29 19:14:03,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:14:03,512 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 379 transitions. [2020-11-29 19:14:03,512 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 19:14:03,512 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 379 transitions. [2020-11-29 19:14:03,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-11-29 19:14:03,514 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:14:03,514 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:14:03,514 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-11-29 19:14:03,514 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:14:03,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:14:03,515 INFO L82 PathProgramCache]: Analyzing trace with hash -2005350993, now seen corresponding path program 1 times [2020-11-29 19:14:03,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:14:03,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240093916] [2020-11-29 19:14:03,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:14:03,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:14:03,620 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 19:14:03,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240093916] [2020-11-29 19:14:03,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:14:03,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:14:03,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432073075] [2020-11-29 19:14:03,625 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:14:03,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:14:03,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:14:03,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:14:03,626 INFO L87 Difference]: Start difference. First operand 250 states and 379 transitions. Second operand 4 states. [2020-11-29 19:14:04,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:14:04,013 INFO L93 Difference]: Finished difference Result 504 states and 766 transitions. [2020-11-29 19:14:04,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:14:04,013 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2020-11-29 19:14:04,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:14:04,016 INFO L225 Difference]: With dead ends: 504 [2020-11-29 19:14:04,016 INFO L226 Difference]: Without dead ends: 273 [2020-11-29 19:14:04,017 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:14:04,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-11-29 19:14:04,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 250. [2020-11-29 19:14:04,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-11-29 19:14:04,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 378 transitions. [2020-11-29 19:14:04,027 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 378 transitions. Word has length 98 [2020-11-29 19:14:04,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:14:04,028 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 378 transitions. [2020-11-29 19:14:04,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:14:04,028 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 378 transitions. [2020-11-29 19:14:04,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-11-29 19:14:04,029 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:14:04,030 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:14:04,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-11-29 19:14:04,030 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:14:04,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:14:04,031 INFO L82 PathProgramCache]: Analyzing trace with hash -1056002833, now seen corresponding path program 1 times [2020-11-29 19:14:04,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:14:04,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725106402] [2020-11-29 19:14:04,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:14:04,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:14:04,110 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 19:14:04,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725106402] [2020-11-29 19:14:04,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:14:04,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:14:04,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772919635] [2020-11-29 19:14:04,111 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:14:04,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:14:04,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:14:04,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:14:04,113 INFO L87 Difference]: Start difference. First operand 250 states and 378 transitions. Second operand 4 states. [2020-11-29 19:14:04,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:14:04,518 INFO L93 Difference]: Finished difference Result 503 states and 763 transitions. [2020-11-29 19:14:04,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:14:04,518 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2020-11-29 19:14:04,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:14:04,521 INFO L225 Difference]: With dead ends: 503 [2020-11-29 19:14:04,521 INFO L226 Difference]: Without dead ends: 272 [2020-11-29 19:14:04,522 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:14:04,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2020-11-29 19:14:04,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 250. [2020-11-29 19:14:04,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-11-29 19:14:04,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 377 transitions. [2020-11-29 19:14:04,532 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 377 transitions. Word has length 98 [2020-11-29 19:14:04,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:14:04,533 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 377 transitions. [2020-11-29 19:14:04,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:14:04,533 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 377 transitions. [2020-11-29 19:14:04,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-11-29 19:14:04,534 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:14:04,534 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:14:04,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-11-29 19:14:04,535 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:14:04,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:14:04,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1449434210, now seen corresponding path program 1 times [2020-11-29 19:14:04,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:14:04,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156002953] [2020-11-29 19:14:04,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:14:04,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:14:04,633 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 19:14:04,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156002953] [2020-11-29 19:14:04,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:14:04,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:14:04,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289174459] [2020-11-29 19:14:04,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:14:04,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:14:04,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:14:04,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:14:04,636 INFO L87 Difference]: Start difference. First operand 250 states and 377 transitions. Second operand 4 states. [2020-11-29 19:14:05,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:14:05,300 INFO L93 Difference]: Finished difference Result 530 states and 797 transitions. [2020-11-29 19:14:05,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:14:05,301 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 99 [2020-11-29 19:14:05,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:14:05,304 INFO L225 Difference]: With dead ends: 530 [2020-11-29 19:14:05,304 INFO L226 Difference]: Without dead ends: 299 [2020-11-29 19:14:05,305 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:14:05,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-11-29 19:14:05,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 250. [2020-11-29 19:14:05,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-11-29 19:14:05,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 376 transitions. [2020-11-29 19:14:05,321 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 376 transitions. Word has length 99 [2020-11-29 19:14:05,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:14:05,321 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 376 transitions. [2020-11-29 19:14:05,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:14:05,322 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 376 transitions. [2020-11-29 19:14:05,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-11-29 19:14:05,323 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:14:05,323 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:14:05,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-11-29 19:14:05,324 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:14:05,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:14:05,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1015705124, now seen corresponding path program 1 times [2020-11-29 19:14:05,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:14:05,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973062947] [2020-11-29 19:14:05,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:14:05,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:14:05,405 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 19:14:05,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973062947] [2020-11-29 19:14:05,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:14:05,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:14:05,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454478257] [2020-11-29 19:14:05,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:14:05,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:14:05,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:14:05,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:14:05,408 INFO L87 Difference]: Start difference. First operand 250 states and 376 transitions. Second operand 4 states. [2020-11-29 19:14:05,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:14:05,850 INFO L93 Difference]: Finished difference Result 503 states and 759 transitions. [2020-11-29 19:14:05,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:14:05,851 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 99 [2020-11-29 19:14:05,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:14:05,853 INFO L225 Difference]: With dead ends: 503 [2020-11-29 19:14:05,853 INFO L226 Difference]: Without dead ends: 272 [2020-11-29 19:14:05,854 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:14:05,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2020-11-29 19:14:05,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 250. [2020-11-29 19:14:05,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-11-29 19:14:05,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 375 transitions. [2020-11-29 19:14:05,865 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 375 transitions. Word has length 99 [2020-11-29 19:14:05,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:14:05,865 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 375 transitions. [2020-11-29 19:14:05,865 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:14:05,865 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 375 transitions. [2020-11-29 19:14:05,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-11-29 19:14:05,867 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:14:05,867 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:14:05,867 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-11-29 19:14:05,867 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:14:05,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:14:05,868 INFO L82 PathProgramCache]: Analyzing trace with hash 542245225, now seen corresponding path program 1 times [2020-11-29 19:14:05,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:14:05,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772203816] [2020-11-29 19:14:05,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:14:05,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:14:05,951 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 19:14:05,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772203816] [2020-11-29 19:14:05,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:14:05,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:14:05,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244823745] [2020-11-29 19:14:05,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:14:05,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:14:05,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:14:05,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:14:05,954 INFO L87 Difference]: Start difference. First operand 250 states and 375 transitions. Second operand 4 states. [2020-11-29 19:14:06,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:14:06,454 INFO L93 Difference]: Finished difference Result 530 states and 793 transitions. [2020-11-29 19:14:06,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:14:06,455 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 100 [2020-11-29 19:14:06,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:14:06,457 INFO L225 Difference]: With dead ends: 530 [2020-11-29 19:14:06,457 INFO L226 Difference]: Without dead ends: 299 [2020-11-29 19:14:06,457 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:14:06,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-11-29 19:14:06,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 250. [2020-11-29 19:14:06,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-11-29 19:14:06,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 374 transitions. [2020-11-29 19:14:06,469 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 374 transitions. Word has length 100 [2020-11-29 19:14:06,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:14:06,469 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 374 transitions. [2020-11-29 19:14:06,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:14:06,469 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 374 transitions. [2020-11-29 19:14:06,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-11-29 19:14:06,471 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:14:06,471 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:14:06,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-11-29 19:14:06,471 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:14:06,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:14:06,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1102945003, now seen corresponding path program 1 times [2020-11-29 19:14:06,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:14:06,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507219398] [2020-11-29 19:14:06,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:14:06,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:14:06,557 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 19:14:06,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507219398] [2020-11-29 19:14:06,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:14:06,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:14:06,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661612532] [2020-11-29 19:14:06,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:14:06,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:14:06,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:14:06,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:14:06,560 INFO L87 Difference]: Start difference. First operand 250 states and 374 transitions. Second operand 4 states. [2020-11-29 19:14:07,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:14:07,013 INFO L93 Difference]: Finished difference Result 503 states and 755 transitions. [2020-11-29 19:14:07,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:14:07,014 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 100 [2020-11-29 19:14:07,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:14:07,016 INFO L225 Difference]: With dead ends: 503 [2020-11-29 19:14:07,017 INFO L226 Difference]: Without dead ends: 272 [2020-11-29 19:14:07,017 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:14:07,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2020-11-29 19:14:07,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 250. [2020-11-29 19:14:07,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-11-29 19:14:07,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 373 transitions. [2020-11-29 19:14:07,034 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 373 transitions. Word has length 100 [2020-11-29 19:14:07,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:14:07,035 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 373 transitions. [2020-11-29 19:14:07,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:14:07,035 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 373 transitions. [2020-11-29 19:14:07,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-11-29 19:14:07,036 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:14:07,037 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:14:07,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-11-29 19:14:07,037 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:14:07,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:14:07,038 INFO L82 PathProgramCache]: Analyzing trace with hash 952064921, now seen corresponding path program 1 times [2020-11-29 19:14:07,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:14:07,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564904249] [2020-11-29 19:14:07,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:14:07,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:14:07,132 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 19:14:07,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564904249] [2020-11-29 19:14:07,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:14:07,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:14:07,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934916716] [2020-11-29 19:14:07,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:14:07,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:14:07,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:14:07,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:14:07,136 INFO L87 Difference]: Start difference. First operand 250 states and 373 transitions. Second operand 4 states. [2020-11-29 19:14:07,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:14:07,779 INFO L93 Difference]: Finished difference Result 530 states and 789 transitions. [2020-11-29 19:14:07,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:14:07,780 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 101 [2020-11-29 19:14:07,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:14:07,782 INFO L225 Difference]: With dead ends: 530 [2020-11-29 19:14:07,782 INFO L226 Difference]: Without dead ends: 299 [2020-11-29 19:14:07,783 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:14:07,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-11-29 19:14:07,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 250. [2020-11-29 19:14:07,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-11-29 19:14:07,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 372 transitions. [2020-11-29 19:14:07,793 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 372 transitions. Word has length 101 [2020-11-29 19:14:07,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:14:07,794 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 372 transitions. [2020-11-29 19:14:07,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:14:07,794 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 372 transitions. [2020-11-29 19:14:07,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-11-29 19:14:07,795 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:14:07,795 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:14:07,796 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-11-29 19:14:07,796 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:14:07,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:14:07,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1153888855, now seen corresponding path program 1 times [2020-11-29 19:14:07,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:14:07,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013430315] [2020-11-29 19:14:07,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:14:07,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:14:07,876 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 19:14:07,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013430315] [2020-11-29 19:14:07,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:14:07,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:14:07,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238814748] [2020-11-29 19:14:07,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:14:07,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:14:07,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:14:07,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:14:07,879 INFO L87 Difference]: Start difference. First operand 250 states and 372 transitions. Second operand 4 states. [2020-11-29 19:14:08,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:14:08,384 INFO L93 Difference]: Finished difference Result 503 states and 751 transitions. [2020-11-29 19:14:08,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:14:08,385 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 101 [2020-11-29 19:14:08,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:14:08,387 INFO L225 Difference]: With dead ends: 503 [2020-11-29 19:14:08,387 INFO L226 Difference]: Without dead ends: 272 [2020-11-29 19:14:08,388 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:14:08,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2020-11-29 19:14:08,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 250. [2020-11-29 19:14:08,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-11-29 19:14:08,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 371 transitions. [2020-11-29 19:14:08,399 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 371 transitions. Word has length 101 [2020-11-29 19:14:08,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:14:08,400 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 371 transitions. [2020-11-29 19:14:08,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:14:08,400 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 371 transitions. [2020-11-29 19:14:08,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-11-29 19:14:08,401 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:14:08,402 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:14:08,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-11-29 19:14:08,402 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:14:08,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:14:08,403 INFO L82 PathProgramCache]: Analyzing trace with hash -431127036, now seen corresponding path program 1 times [2020-11-29 19:14:08,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:14:08,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764825930] [2020-11-29 19:14:08,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:14:08,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:14:08,520 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 19:14:08,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764825930] [2020-11-29 19:14:08,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:14:08,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:14:08,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501137950] [2020-11-29 19:14:08,521 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:14:08,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:14:08,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:14:08,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:14:08,522 INFO L87 Difference]: Start difference. First operand 250 states and 371 transitions. Second operand 4 states. [2020-11-29 19:14:09,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:14:09,170 INFO L93 Difference]: Finished difference Result 520 states and 773 transitions. [2020-11-29 19:14:09,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:14:09,171 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 102 [2020-11-29 19:14:09,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:14:09,173 INFO L225 Difference]: With dead ends: 520 [2020-11-29 19:14:09,174 INFO L226 Difference]: Without dead ends: 289 [2020-11-29 19:14:09,174 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:14:09,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-11-29 19:14:09,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 250. [2020-11-29 19:14:09,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-11-29 19:14:09,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 370 transitions. [2020-11-29 19:14:09,185 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 370 transitions. Word has length 102 [2020-11-29 19:14:09,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:14:09,185 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 370 transitions. [2020-11-29 19:14:09,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:14:09,186 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 370 transitions. [2020-11-29 19:14:09,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-11-29 19:14:09,187 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:14:09,187 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:14:09,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-11-29 19:14:09,187 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:14:09,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:14:09,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1530447622, now seen corresponding path program 1 times [2020-11-29 19:14:09,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:14:09,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905711790] [2020-11-29 19:14:09,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:14:09,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:14:09,299 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 19:14:09,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905711790] [2020-11-29 19:14:09,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:14:09,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:14:09,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660030792] [2020-11-29 19:14:09,301 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:14:09,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:14:09,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:14:09,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:14:09,303 INFO L87 Difference]: Start difference. First operand 250 states and 370 transitions. Second operand 4 states. [2020-11-29 19:14:09,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:14:09,795 INFO L93 Difference]: Finished difference Result 493 states and 735 transitions. [2020-11-29 19:14:09,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:14:09,796 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 102 [2020-11-29 19:14:09,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:14:09,798 INFO L225 Difference]: With dead ends: 493 [2020-11-29 19:14:09,798 INFO L226 Difference]: Without dead ends: 262 [2020-11-29 19:14:09,799 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:14:09,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-11-29 19:14:09,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 250. [2020-11-29 19:14:09,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-11-29 19:14:09,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 369 transitions. [2020-11-29 19:14:09,810 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 369 transitions. Word has length 102 [2020-11-29 19:14:09,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:14:09,811 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 369 transitions. [2020-11-29 19:14:09,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:14:09,811 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 369 transitions. [2020-11-29 19:14:09,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-11-29 19:14:09,812 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:14:09,813 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:14:09,813 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-11-29 19:14:09,813 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:14:09,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:14:09,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1853395595, now seen corresponding path program 1 times [2020-11-29 19:14:09,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:14:09,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885855368] [2020-11-29 19:14:09,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:14:09,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:14:09,906 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 19:14:09,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885855368] [2020-11-29 19:14:09,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:14:09,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:14:09,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356780374] [2020-11-29 19:14:09,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:14:09,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:14:09,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:14:09,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:14:09,912 INFO L87 Difference]: Start difference. First operand 250 states and 369 transitions. Second operand 4 states. [2020-11-29 19:14:10,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:14:10,530 INFO L93 Difference]: Finished difference Result 520 states and 769 transitions. [2020-11-29 19:14:10,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:14:10,531 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 106 [2020-11-29 19:14:10,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:14:10,533 INFO L225 Difference]: With dead ends: 520 [2020-11-29 19:14:10,533 INFO L226 Difference]: Without dead ends: 289 [2020-11-29 19:14:10,534 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:14:10,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-11-29 19:14:10,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 250. [2020-11-29 19:14:10,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-11-29 19:14:10,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 368 transitions. [2020-11-29 19:14:10,546 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 368 transitions. Word has length 106 [2020-11-29 19:14:10,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:14:10,546 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 368 transitions. [2020-11-29 19:14:10,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:14:10,546 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 368 transitions. [2020-11-29 19:14:10,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-11-29 19:14:10,548 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:14:10,548 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:14:10,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-11-29 19:14:10,548 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:14:10,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:14:10,549 INFO L82 PathProgramCache]: Analyzing trace with hash 167215757, now seen corresponding path program 1 times [2020-11-29 19:14:10,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:14:10,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283212750] [2020-11-29 19:14:10,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:14:10,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:14:10,647 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-11-29 19:14:10,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283212750] [2020-11-29 19:14:10,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:14:10,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:14:10,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342039122] [2020-11-29 19:14:10,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:14:10,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:14:10,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:14:10,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:14:10,651 INFO L87 Difference]: Start difference. First operand 250 states and 368 transitions. Second operand 3 states. [2020-11-29 19:14:10,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:14:10,736 INFO L93 Difference]: Finished difference Result 708 states and 1057 transitions. [2020-11-29 19:14:10,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:14:10,737 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2020-11-29 19:14:10,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:14:10,741 INFO L225 Difference]: With dead ends: 708 [2020-11-29 19:14:10,741 INFO L226 Difference]: Without dead ends: 477 [2020-11-29 19:14:10,742 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 19:14:10,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2020-11-29 19:14:10,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 477. [2020-11-29 19:14:10,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 477 states. [2020-11-29 19:14:10,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 706 transitions. [2020-11-29 19:14:10,762 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 706 transitions. Word has length 106 [2020-11-29 19:14:10,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:14:10,763 INFO L481 AbstractCegarLoop]: Abstraction has 477 states and 706 transitions. [2020-11-29 19:14:10,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:14:10,763 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 706 transitions. [2020-11-29 19:14:10,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-11-29 19:14:10,765 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:14:10,765 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:14:10,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-11-29 19:14:10,766 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:14:10,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:14:10,766 INFO L82 PathProgramCache]: Analyzing trace with hash -1521078267, now seen corresponding path program 1 times [2020-11-29 19:14:10,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:14:10,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199650598] [2020-11-29 19:14:10,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:14:10,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:14:10,824 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-11-29 19:14:10,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199650598] [2020-11-29 19:14:10,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:14:10,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:14:10,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426987869] [2020-11-29 19:14:10,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:14:10,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:14:10,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:14:10,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:14:10,827 INFO L87 Difference]: Start difference. First operand 477 states and 706 transitions. Second operand 3 states. [2020-11-29 19:14:10,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:14:10,898 INFO L93 Difference]: Finished difference Result 962 states and 1427 transitions. [2020-11-29 19:14:10,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:14:10,899 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2020-11-29 19:14:10,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:14:10,903 INFO L225 Difference]: With dead ends: 962 [2020-11-29 19:14:10,903 INFO L226 Difference]: Without dead ends: 504 [2020-11-29 19:14:10,905 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 19:14:10,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2020-11-29 19:14:10,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 504. [2020-11-29 19:14:10,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 504 states. [2020-11-29 19:14:10,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 741 transitions. [2020-11-29 19:14:10,927 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 741 transitions. Word has length 107 [2020-11-29 19:14:10,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:14:10,927 INFO L481 AbstractCegarLoop]: Abstraction has 504 states and 741 transitions. [2020-11-29 19:14:10,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:14:10,928 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 741 transitions. [2020-11-29 19:14:10,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-11-29 19:14:10,930 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:14:10,930 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:14:10,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-11-29 19:14:10,931 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:14:10,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:14:10,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1779195331, now seen corresponding path program 1 times [2020-11-29 19:14:10,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:14:10,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932330818] [2020-11-29 19:14:10,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:14:10,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:14:10,982 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2020-11-29 19:14:10,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932330818] [2020-11-29 19:14:10,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:14:10,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:14:10,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090103686] [2020-11-29 19:14:10,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:14:10,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:14:10,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:14:10,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:14:10,985 INFO L87 Difference]: Start difference. First operand 504 states and 741 transitions. Second operand 3 states. [2020-11-29 19:14:11,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:14:11,017 INFO L93 Difference]: Finished difference Result 991 states and 1463 transitions. [2020-11-29 19:14:11,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:14:11,018 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2020-11-29 19:14:11,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:14:11,022 INFO L225 Difference]: With dead ends: 991 [2020-11-29 19:14:11,022 INFO L226 Difference]: Without dead ends: 506 [2020-11-29 19:14:11,023 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 19:14:11,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2020-11-29 19:14:11,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 506. [2020-11-29 19:14:11,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 506 states. [2020-11-29 19:14:11,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 743 transitions. [2020-11-29 19:14:11,044 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 743 transitions. Word has length 107 [2020-11-29 19:14:11,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:14:11,044 INFO L481 AbstractCegarLoop]: Abstraction has 506 states and 743 transitions. [2020-11-29 19:14:11,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:14:11,045 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 743 transitions. [2020-11-29 19:14:11,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-11-29 19:14:11,046 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:14:11,047 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-11-29 19:14:11,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-11-29 19:14:11,047 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:14:11,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:14:11,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1381936186, now seen corresponding path program 1 times [2020-11-29 19:14:11,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:14:11,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761188535] [2020-11-29 19:14:11,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:14:11,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:14:11,212 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:14:11,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:14:11,328 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:14:11,453 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:14:11,454 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 19:14:11,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-11-29 19:14:11,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 07:14:11 BoogieIcfgContainer [2020-11-29 19:14:11,678 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 19:14:11,679 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:14:11,679 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:14:11,679 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:14:11,680 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:13:46" (3/4) ... [2020-11-29 19:14:11,684 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 19:14:11,684 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:14:11,686 INFO L168 Benchmark]: Toolchain (without parser) took 28574.36 ms. Allocated memory was 100.7 MB in the beginning and 272.6 MB in the end (delta: 172.0 MB). Free memory was 70.6 MB in the beginning and 90.4 MB in the end (delta: -19.7 MB). Peak memory consumption was 152.3 MB. Max. memory is 16.1 GB. [2020-11-29 19:14:11,687 INFO L168 Benchmark]: CDTParser took 0.50 ms. Allocated memory is still 100.7 MB. Free memory is still 60.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:14:11,687 INFO L168 Benchmark]: CACSL2BoogieTranslator took 943.30 ms. Allocated memory is still 100.7 MB. Free memory was 70.4 MB in the beginning and 58.6 MB in the end (delta: 11.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 19:14:11,687 INFO L168 Benchmark]: Boogie Procedure Inliner took 152.36 ms. Allocated memory is still 100.7 MB. Free memory was 58.6 MB in the beginning and 54.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 19:14:11,688 INFO L168 Benchmark]: Boogie Preprocessor took 175.40 ms. Allocated memory is still 100.7 MB. Free memory was 54.0 MB in the beginning and 47.3 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-29 19:14:11,688 INFO L168 Benchmark]: RCFGBuilder took 1693.03 ms. Allocated memory was 100.7 MB in the beginning and 123.7 MB in the end (delta: 23.1 MB). Free memory was 47.3 MB in the beginning and 62.3 MB in the end (delta: -14.9 MB). Peak memory consumption was 29.8 MB. Max. memory is 16.1 GB. [2020-11-29 19:14:11,689 INFO L168 Benchmark]: TraceAbstraction took 25594.30 ms. Allocated memory was 123.7 MB in the beginning and 272.6 MB in the end (delta: 148.9 MB). Free memory was 62.3 MB in the beginning and 90.4 MB in the end (delta: -28.1 MB). Peak memory consumption was 120.6 MB. Max. memory is 16.1 GB. [2020-11-29 19:14:11,689 INFO L168 Benchmark]: Witness Printer took 5.41 ms. Allocated memory is still 272.6 MB. Free memory is still 90.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:14:11,692 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50 ms. Allocated memory is still 100.7 MB. Free memory is still 60.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 943.30 ms. Allocated memory is still 100.7 MB. Free memory was 70.4 MB in the beginning and 58.6 MB in the end (delta: 11.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 152.36 ms. Allocated memory is still 100.7 MB. Free memory was 58.6 MB in the beginning and 54.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 175.40 ms. Allocated memory is still 100.7 MB. Free memory was 54.0 MB in the beginning and 47.3 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1693.03 ms. Allocated memory was 100.7 MB in the beginning and 123.7 MB in the end (delta: 23.1 MB). Free memory was 47.3 MB in the beginning and 62.3 MB in the end (delta: -14.9 MB). Peak memory consumption was 29.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 25594.30 ms. Allocated memory was 123.7 MB in the beginning and 272.6 MB in the end (delta: 148.9 MB). Free memory was 62.3 MB in the beginning and 90.4 MB in the end (delta: -28.1 MB). Peak memory consumption was 120.6 MB. Max. memory is 16.1 GB. * Witness Printer took 5.41 ms. Allocated memory is still 272.6 MB. Free memory is still 90.4 MB. There was no memory consumed. 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 bitwiseAnd at line 1123. Possible FailurePath: [L1044] static int init = 1; [L1045] static SSL_METHOD SSLv3_server_data ; VAL [init=1, SSLv3_server_data={6:0}] [L1067] SSL *s ; [L1068] int tmp ; [L1072] s = malloc(sizeof(SSL)) [L1073] s->s3 = malloc(sizeof(struct ssl3_state_st)) [L1074] s->ctx = malloc(sizeof(SSL_CTX)) [L1075] s->session = malloc(sizeof(SSL_SESSION)) [L1076] s->state = 8464 [L1083] BUF_MEM *buf ; [L1084] unsigned long l ; [L1085] unsigned long Time ; [L1086] unsigned long tmp ; [L1087] void (*cb)() ; [L1088] long num1 ; [L1089] int ret ; [L1090] int new_state ; [L1091] int state ; [L1092] int skip ; [L1093] int got_new_session ; [L1094] int tmp___1 = __VERIFIER_nondet_int() ; [L1095] int tmp___2 = __VERIFIER_nondet_int() ; [L1096] int tmp___3 = __VERIFIER_nondet_int() ; [L1097] int tmp___4 = __VERIFIER_nondet_int() ; [L1098] int tmp___5 = __VERIFIER_nondet_int() ; [L1099] int tmp___6 = __VERIFIER_nondet_int() ; [L1100] int tmp___7 ; [L1101] long tmp___8 = __VERIFIER_nondet_long() ; [L1102] int tmp___9 = __VERIFIER_nondet_int() ; [L1103] int tmp___10 = __VERIFIER_nondet_int() ; [L1104] int blastFlag ; [L1108] blastFlag = 0 [L1109] s->hit=__VERIFIER_nondet_int () [L1110] s->state = 8464 [L1111] tmp = __VERIFIER_nondet_int() [L1112] Time = tmp [L1113] cb = (void (*)())((void *)0) [L1114] ret = -1 [L1115] skip = 0 [L1116] got_new_session = 0 [L1117] EXPR s->info_callback VAL [init=1, SSLv3_server_data={6:0}] [L1117] COND TRUE (unsigned long )s->info_callback != (unsigned long )((void *)0) [L1118] EXPR s->info_callback [L1118] cb = s->info_callback [L1122] EXPR s->in_handshake [L1122] s->in_handshake += 1 [L1123] COND FALSE !(tmp___1 & 12288) VAL [init=1, SSLv3_server_data={6:0}] [L1132] EXPR s->cert VAL [init=1, SSLv3_server_data={6:0}] [L1132] COND FALSE !((unsigned long )s->cert == (unsigned long )((void *)0)) [L1138] COND TRUE 1 VAL [init=1, SSLv3_server_data={6:0}] [L1140] EXPR s->state [L1140] state = s->state [L1141] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1141] COND FALSE !(s->state == 12292) [L1144] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1144] COND FALSE !(s->state == 16384) [L1147] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1147] COND FALSE !(s->state == 8192) [L1150] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1150] COND FALSE !(s->state == 24576) [L1153] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1153] COND FALSE !(s->state == 8195) [L1156] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1156] COND FALSE !(s->state == 8480) [L1159] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1159] COND FALSE !(s->state == 8481) [L1162] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1162] COND FALSE !(s->state == 8482) [L1165] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1165] COND TRUE s->state == 8464 [L1325] s->shutdown = 0 [L1326] ret = __VERIFIER_nondet_int() [L1327] COND TRUE blastFlag == 0 [L1328] blastFlag = 1 VAL [init=1, SSLv3_server_data={6:0}] [L1332] COND FALSE !(ret <= 0) [L1337] got_new_session = 1 [L1338] s->state = 8496 [L1339] s->init_num = 0 VAL [init=1, SSLv3_server_data={6:0}] [L1663] EXPR s->s3 [L1663] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={6:0}] [L1663] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1692] skip = 0 VAL [init=1, SSLv3_server_data={6:0}] [L1138] COND TRUE 1 VAL [init=1, SSLv3_server_data={6:0}] [L1140] EXPR s->state [L1140] state = s->state [L1141] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1141] COND FALSE !(s->state == 12292) [L1144] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1144] COND FALSE !(s->state == 16384) [L1147] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1147] COND FALSE !(s->state == 8192) [L1150] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1150] COND FALSE !(s->state == 24576) [L1153] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1153] COND FALSE !(s->state == 8195) [L1156] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1156] COND FALSE !(s->state == 8480) [L1159] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1159] COND FALSE !(s->state == 8481) [L1162] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1162] COND FALSE !(s->state == 8482) [L1165] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1165] COND FALSE !(s->state == 8464) [L1168] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1168] COND FALSE !(s->state == 8465) [L1171] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1171] COND FALSE !(s->state == 8466) [L1174] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1174] COND TRUE s->state == 8496 [L1343] ret = __VERIFIER_nondet_int() [L1344] COND TRUE blastFlag == 1 [L1345] blastFlag = 2 VAL [init=1, SSLv3_server_data={6:0}] [L1353] COND FALSE !(ret <= 0) [L1358] s->hit VAL [init=1, SSLv3_server_data={6:0}] [L1358] COND TRUE s->hit [L1359] s->state = 8656 VAL [init=1, SSLv3_server_data={6:0}] [L1363] s->init_num = 0 VAL [init=1, SSLv3_server_data={6:0}] [L1663] EXPR s->s3 [L1663] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={6:0}] [L1663] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1692] skip = 0 VAL [init=1, SSLv3_server_data={6:0}] [L1138] COND TRUE 1 VAL [init=1, SSLv3_server_data={6:0}] [L1140] EXPR s->state [L1140] state = s->state [L1141] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1141] COND FALSE !(s->state == 12292) [L1144] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1144] COND FALSE !(s->state == 16384) [L1147] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1147] COND FALSE !(s->state == 8192) [L1150] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1150] COND FALSE !(s->state == 24576) [L1153] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1153] COND FALSE !(s->state == 8195) [L1156] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1156] COND FALSE !(s->state == 8480) [L1159] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1159] COND FALSE !(s->state == 8481) [L1162] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1162] COND FALSE !(s->state == 8482) [L1165] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1165] COND FALSE !(s->state == 8464) [L1168] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1168] COND FALSE !(s->state == 8465) [L1171] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1171] COND FALSE !(s->state == 8466) [L1174] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1174] COND FALSE !(s->state == 8496) [L1177] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1177] COND FALSE !(s->state == 8497) [L1180] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1180] COND FALSE !(s->state == 8512) [L1183] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1183] COND FALSE !(s->state == 8513) [L1186] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1186] COND FALSE !(s->state == 8528) [L1189] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1189] COND FALSE !(s->state == 8529) [L1192] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1192] COND FALSE !(s->state == 8544) [L1195] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1195] COND FALSE !(s->state == 8545) [L1198] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1198] COND FALSE !(s->state == 8560) [L1201] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1201] COND FALSE !(s->state == 8561) [L1204] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1204] COND FALSE !(s->state == 8448) [L1207] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1207] COND FALSE !(s->state == 8576) [L1210] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1210] COND FALSE !(s->state == 8577) [L1213] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1213] COND FALSE !(s->state == 8592) [L1216] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1216] COND FALSE !(s->state == 8593) [L1219] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1219] COND FALSE !(s->state == 8608) [L1222] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1222] COND FALSE !(s->state == 8609) [L1225] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1225] COND FALSE !(s->state == 8640) [L1228] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1228] COND FALSE !(s->state == 8641) [L1231] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1231] COND TRUE s->state == 8656 [L1556] EXPR s->session [L1556] EXPR s->s3 [L1556] EXPR (s->s3)->tmp.new_cipher [L1556] (s->session)->cipher = (s->s3)->tmp.new_cipher [L1557] COND FALSE !(! tmp___9) [L1563] ret = __VERIFIER_nondet_int() [L1564] COND TRUE blastFlag == 2 [L1565] blastFlag = 3 VAL [init=1, SSLv3_server_data={6:0}] [L1569] COND FALSE !(ret <= 0) [L1574] s->state = 8672 [L1575] s->init_num = 0 VAL [init=1, SSLv3_server_data={6:0}] [L1576] COND FALSE !(! tmp___10) VAL [init=1, SSLv3_server_data={6:0}] [L1663] EXPR s->s3 [L1663] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={6:0}] [L1663] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1692] skip = 0 VAL [init=1, SSLv3_server_data={6:0}] [L1138] COND TRUE 1 VAL [init=1, SSLv3_server_data={6:0}] [L1140] EXPR s->state [L1140] state = s->state [L1141] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1141] COND FALSE !(s->state == 12292) [L1144] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1144] COND FALSE !(s->state == 16384) [L1147] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1147] COND FALSE !(s->state == 8192) [L1150] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1150] COND FALSE !(s->state == 24576) [L1153] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1153] COND FALSE !(s->state == 8195) [L1156] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1156] COND FALSE !(s->state == 8480) [L1159] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1159] COND FALSE !(s->state == 8481) [L1162] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1162] COND FALSE !(s->state == 8482) [L1165] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1165] COND FALSE !(s->state == 8464) [L1168] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1168] COND FALSE !(s->state == 8465) [L1171] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1171] COND FALSE !(s->state == 8466) [L1174] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1174] COND FALSE !(s->state == 8496) [L1177] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1177] COND FALSE !(s->state == 8497) [L1180] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1180] COND FALSE !(s->state == 8512) [L1183] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1183] COND FALSE !(s->state == 8513) [L1186] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1186] COND FALSE !(s->state == 8528) [L1189] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1189] COND FALSE !(s->state == 8529) [L1192] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1192] COND FALSE !(s->state == 8544) [L1195] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1195] COND FALSE !(s->state == 8545) [L1198] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1198] COND FALSE !(s->state == 8560) [L1201] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1201] COND FALSE !(s->state == 8561) [L1204] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1204] COND FALSE !(s->state == 8448) [L1207] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1207] COND FALSE !(s->state == 8576) [L1210] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1210] COND FALSE !(s->state == 8577) [L1213] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1213] COND FALSE !(s->state == 8592) [L1216] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1216] COND FALSE !(s->state == 8593) [L1219] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1219] COND FALSE !(s->state == 8608) [L1222] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1222] COND FALSE !(s->state == 8609) [L1225] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1225] COND FALSE !(s->state == 8640) [L1228] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1228] COND FALSE !(s->state == 8641) [L1231] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1231] COND FALSE !(s->state == 8656) [L1234] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1234] COND FALSE !(s->state == 8657) [L1237] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1237] COND TRUE s->state == 8672 [L1585] ret = __VERIFIER_nondet_int() [L1586] COND TRUE blastFlag == 3 VAL [init=1, SSLv3_server_data={6:0}] [L3] __assert_fail("0", "s3_srvr.blast.02.i.cil-1.c", 3, "reach_error") VAL [init=1, SSLv3_server_data={6:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 144 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 25.2s, OverallIterations: 41, TraceHistogramMax: 4, AutomataDifference: 19.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 7552 SDtfs, 2146 SDslu, 11009 SDs, 0 SdLazy, 6885 SolverSat, 340 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 225 GetRequests, 80 SyntacticMatches, 29 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=506occurred in iteration=40, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 40 MinimizatonAttempts, 941 StatesRemovedByMinimization, 37 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 3502 NumberOfCodeBlocks, 3502 NumberOfCodeBlocksAsserted, 41 NumberOfCheckSat, 3337 ConstructedInterpolants, 0 QuantifiedInterpolants, 763647 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 40 InterpolantComputations, 40 PerfectInterpolantSequences, 1736/1736 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 19:14:14,819 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:14:14,824 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:14:14,892 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:14:14,893 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:14:14,901 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:14:14,903 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:14:14,906 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:14:14,909 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:14:14,911 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:14:14,916 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:14:14,932 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:14:14,937 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:14:14,938 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:14:14,940 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:14:14,942 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:14:14,943 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:14:14,944 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:14:14,946 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:14:14,949 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:14:14,952 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:14:14,964 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:14:14,966 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:14:14,973 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:14:14,980 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:14:14,987 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:14:14,988 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:14:14,989 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:14:14,990 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:14:14,991 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:14:14,994 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:14:14,995 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:14:14,997 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:14:14,999 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:14:15,001 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:14:15,001 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:14:15,002 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:14:15,003 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:14:15,003 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:14:15,006 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:14:15,007 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:14:15,008 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d0ec61a0-f888-456a-80dd-c2f32afa6bc3/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-29 19:14:15,063 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:14:15,063 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:14:15,068 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:14:15,068 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:14:15,068 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:14:15,069 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:14:15,069 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 19:14:15,069 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 19:14:15,070 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:14:15,070 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 19:14:15,071 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 19:14:15,072 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 19:14:15,072 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-29 19:14:15,072 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-29 19:14:15,073 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 19:14:15,073 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:14:15,073 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:14:15,073 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 19:14:15,074 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:14:15,074 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:14:15,074 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 19:14:15,075 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 19:14:15,075 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:14:15,075 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:14:15,075 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 19:14:15,076 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 19:14:15,076 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-29 19:14:15,076 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-29 19:14:15,077 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 19:14:15,077 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:14:15,077 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-29 19:14:15,077 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_d0ec61a0-f888-456a-80dd-c2f32afa6bc3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_d0ec61a0-f888-456a-80dd-c2f32afa6bc3/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 102517b0f8c706bb18ba594655c7ea5e5902e987 [2020-11-29 19:14:15,604 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:14:15,640 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:14:15,643 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:14:15,645 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:14:15,646 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:14:15,647 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d0ec61a0-f888-456a-80dd-c2f32afa6bc3/bin/uautomizer/../../sv-benchmarks/c/openssl/s3_srvr.blast.02.i.cil-1.c [2020-11-29 19:14:15,736 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d0ec61a0-f888-456a-80dd-c2f32afa6bc3/bin/uautomizer/data/312085b1d/67d2d8064b374053a7a4c64e7b00a499/FLAG4d2f3bf25 [2020-11-29 19:14:16,610 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:14:16,611 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d0ec61a0-f888-456a-80dd-c2f32afa6bc3/sv-benchmarks/c/openssl/s3_srvr.blast.02.i.cil-1.c [2020-11-29 19:14:16,637 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d0ec61a0-f888-456a-80dd-c2f32afa6bc3/bin/uautomizer/data/312085b1d/67d2d8064b374053a7a4c64e7b00a499/FLAG4d2f3bf25 [2020-11-29 19:14:16,772 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d0ec61a0-f888-456a-80dd-c2f32afa6bc3/bin/uautomizer/data/312085b1d/67d2d8064b374053a7a4c64e7b00a499 [2020-11-29 19:14:16,775 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:14:16,779 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:14:16,781 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:14:16,782 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:14:16,786 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:14:16,788 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:14:16" (1/1) ... [2020-11-29 19:14:16,790 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a3e5a75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:14:16, skipping insertion in model container [2020-11-29 19:14:16,791 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:14:16" (1/1) ... [2020-11-29 19:14:16,798 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:14:16,870 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:14:17,404 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:14:17,442 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:14:17,665 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:14:17,712 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:14:17,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:14:17 WrapperNode [2020-11-29 19:14:17,714 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:14:17,716 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:14:17,716 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:14:17,718 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:14:17,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:14:17" (1/1) ... [2020-11-29 19:14:17,794 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:14:17" (1/1) ... [2020-11-29 19:14:17,859 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:14:17,860 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:14:17,860 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:14:17,860 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:14:17,871 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:14:17" (1/1) ... [2020-11-29 19:14:17,874 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:14:17" (1/1) ... [2020-11-29 19:14:17,884 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:14:17" (1/1) ... [2020-11-29 19:14:17,889 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:14:17" (1/1) ... [2020-11-29 19:14:17,955 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:14:17" (1/1) ... [2020-11-29 19:14:17,966 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:14:17" (1/1) ... [2020-11-29 19:14:17,972 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:14:17" (1/1) ... [2020-11-29 19:14:17,979 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:14:17,981 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:14:17,981 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:14:17,981 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:14:17,982 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:14:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0ec61a0-f888-456a-80dd-c2f32afa6bc3/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 19:14:18,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-29 19:14:18,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-29 19:14:18,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 19:14:18,075 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-29 19:14:18,075 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-29 19:14:18,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-29 19:14:18,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:14:18,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:14:18,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-29 19:14:18,563 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-11-29 19:14:23,025 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-11-29 19:14:23,026 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-11-29 19:14:23,044 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:14:23,044 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-29 19:14:23,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:14:23 BoogieIcfgContainer [2020-11-29 19:14:23,047 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:14:23,049 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 19:14:23,049 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 19:14:23,053 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 19:14:23,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:14:16" (1/3) ... [2020-11-29 19:14:23,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ea8a4f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:14:23, skipping insertion in model container [2020-11-29 19:14:23,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:14:17" (2/3) ... [2020-11-29 19:14:23,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ea8a4f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:14:23, skipping insertion in model container [2020-11-29 19:14:23,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:14:23" (3/3) ... [2020-11-29 19:14:23,058 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.02.i.cil-1.c [2020-11-29 19:14:23,071 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 19:14:23,077 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 19:14:23,091 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 19:14:23,122 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 19:14:23,123 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 19:14:23,123 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 19:14:23,123 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:14:23,123 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:14:23,123 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 19:14:23,124 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:14:23,124 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 19:14:23,145 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states. [2020-11-29 19:14:23,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-29 19:14:23,169 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:14:23,171 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:14:23,171 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:14:23,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:14:23,179 INFO L82 PathProgramCache]: Analyzing trace with hash 522836684, now seen corresponding path program 1 times [2020-11-29 19:14:23,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 19:14:23,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [987342762] [2020-11-29 19:14:23,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0ec61a0-f888-456a-80dd-c2f32afa6bc3/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 19:14:23,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:14:23,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 19:14:23,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:14:23,634 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 19:14:23,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 19:14:23,701 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 19:14:23,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [987342762] [2020-11-29 19:14:23,704 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:14:23,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-29 19:14:23,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252972481] [2020-11-29 19:14:23,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:14:23,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 19:14:23,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:14:23,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:14:23,739 INFO L87 Difference]: Start difference. First operand 144 states. Second operand 4 states. [2020-11-29 19:14:24,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:14:24,000 INFO L93 Difference]: Finished difference Result 538 states and 913 transitions. [2020-11-29 19:14:24,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:14:24,003 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-11-29 19:14:24,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:14:24,030 INFO L225 Difference]: With dead ends: 538 [2020-11-29 19:14:24,031 INFO L226 Difference]: Without dead ends: 363 [2020-11-29 19:14:24,037 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 86 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 19:14:24,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2020-11-29 19:14:24,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 363. [2020-11-29 19:14:24,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2020-11-29 19:14:24,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 551 transitions. [2020-11-29 19:14:24,170 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 551 transitions. Word has length 45 [2020-11-29 19:14:24,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:14:24,171 INFO L481 AbstractCegarLoop]: Abstraction has 363 states and 551 transitions. [2020-11-29 19:14:24,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:14:24,172 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 551 transitions. [2020-11-29 19:14:24,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-11-29 19:14:24,189 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:14:24,190 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-11-29 19:14:24,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-29 19:14:24,403 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:14:24,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:14:24,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1786835122, now seen corresponding path program 1 times [2020-11-29 19:14:24,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 19:14:24,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [700851530] [2020-11-29 19:14:24,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0ec61a0-f888-456a-80dd-c2f32afa6bc3/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 19:14:24,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:14:24,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 19:14:24,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:14:24,802 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:14:24,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 19:14:24,858 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:14:24,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [700851530] [2020-11-29 19:14:24,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:14:24,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-29 19:14:24,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164947968] [2020-11-29 19:14:24,865 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:14:24,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 19:14:24,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:14:24,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:14:24,869 INFO L87 Difference]: Start difference. First operand 363 states and 551 transitions. Second operand 4 states. [2020-11-29 19:14:26,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:14:26,006 INFO L93 Difference]: Finished difference Result 833 states and 1271 transitions. [2020-11-29 19:14:26,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:14:26,009 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2020-11-29 19:14:26,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:14:26,014 INFO L225 Difference]: With dead ends: 833 [2020-11-29 19:14:26,014 INFO L226 Difference]: Without dead ends: 597 [2020-11-29 19:14:26,017 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 202 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 19:14:26,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2020-11-29 19:14:26,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 597. [2020-11-29 19:14:26,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 597 states. [2020-11-29 19:14:26,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 905 transitions. [2020-11-29 19:14:26,094 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 905 transitions. Word has length 103 [2020-11-29 19:14:26,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:14:26,098 INFO L481 AbstractCegarLoop]: Abstraction has 597 states and 905 transitions. [2020-11-29 19:14:26,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:14:26,099 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 905 transitions. [2020-11-29 19:14:26,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-11-29 19:14:26,103 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:14:26,104 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-11-29 19:14:26,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-29 19:14:26,317 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:14:26,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:14:26,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1381936186, now seen corresponding path program 1 times [2020-11-29 19:14:26,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 19:14:26,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1162841220] [2020-11-29 19:14:26,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0ec61a0-f888-456a-80dd-c2f32afa6bc3/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 19:14:26,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:14:26,932 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:14:27,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:14:27,471 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:14:27,928 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-29 19:14:27,928 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 19:14:28,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-29 19:14:28,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 07:14:28 BoogieIcfgContainer [2020-11-29 19:14:28,427 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 19:14:28,427 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:14:28,428 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:14:28,428 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:14:28,429 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:14:23" (3/4) ... [2020-11-29 19:14:28,432 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 19:14:28,609 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d0ec61a0-f888-456a-80dd-c2f32afa6bc3/bin/uautomizer/witness.graphml [2020-11-29 19:14:28,609 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:14:28,611 INFO L168 Benchmark]: Toolchain (without parser) took 11831.30 ms. Allocated memory was 56.6 MB in the beginning and 111.1 MB in the end (delta: 54.5 MB). Free memory was 32.7 MB in the beginning and 54.1 MB in the end (delta: -21.4 MB). Peak memory consumption was 33.8 MB. Max. memory is 16.1 GB. [2020-11-29 19:14:28,612 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 56.6 MB. Free memory was 38.3 MB in the beginning and 38.2 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:14:28,613 INFO L168 Benchmark]: CACSL2BoogieTranslator took 933.42 ms. Allocated memory was 56.6 MB in the beginning and 73.4 MB in the end (delta: 16.8 MB). Free memory was 32.5 MB in the beginning and 49.9 MB in the end (delta: -17.4 MB). Peak memory consumption was 20.9 MB. Max. memory is 16.1 GB. [2020-11-29 19:14:28,613 INFO L168 Benchmark]: Boogie Procedure Inliner took 143.30 ms. Allocated memory is still 73.4 MB. Free memory was 49.9 MB in the beginning and 45.4 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 19:14:28,614 INFO L168 Benchmark]: Boogie Preprocessor took 119.99 ms. Allocated memory is still 73.4 MB. Free memory was 45.4 MB in the beginning and 38.5 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-29 19:14:28,614 INFO L168 Benchmark]: RCFGBuilder took 5066.36 ms. Allocated memory is still 73.4 MB. Free memory was 38.5 MB in the beginning and 31.2 MB in the end (delta: 7.3 MB). Peak memory consumption was 15.7 MB. Max. memory is 16.1 GB. [2020-11-29 19:14:28,615 INFO L168 Benchmark]: TraceAbstraction took 5377.75 ms. Allocated memory was 73.4 MB in the beginning and 111.1 MB in the end (delta: 37.7 MB). Free memory was 30.8 MB in the beginning and 70.1 MB in the end (delta: -39.3 MB). Peak memory consumption was 27.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:14:28,615 INFO L168 Benchmark]: Witness Printer took 181.67 ms. Allocated memory is still 111.1 MB. Free memory was 70.1 MB in the beginning and 54.1 MB in the end (delta: 16.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-29 19:14:28,618 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 56.6 MB. Free memory was 38.3 MB in the beginning and 38.2 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 933.42 ms. Allocated memory was 56.6 MB in the beginning and 73.4 MB in the end (delta: 16.8 MB). Free memory was 32.5 MB in the beginning and 49.9 MB in the end (delta: -17.4 MB). Peak memory consumption was 20.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 143.30 ms. Allocated memory is still 73.4 MB. Free memory was 49.9 MB in the beginning and 45.4 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 119.99 ms. Allocated memory is still 73.4 MB. Free memory was 45.4 MB in the beginning and 38.5 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 5066.36 ms. Allocated memory is still 73.4 MB. Free memory was 38.5 MB in the beginning and 31.2 MB in the end (delta: 7.3 MB). Peak memory consumption was 15.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5377.75 ms. Allocated memory was 73.4 MB in the beginning and 111.1 MB in the end (delta: 37.7 MB). Free memory was 30.8 MB in the beginning and 70.1 MB in the end (delta: -39.3 MB). Peak memory consumption was 27.4 MB. Max. memory is 16.1 GB. * Witness Printer took 181.67 ms. Allocated memory is still 111.1 MB. Free memory was 70.1 MB in the beginning and 54.1 MB in the end (delta: 16.0 MB). Peak memory consumption was 14.7 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: [L1044] static int init = 1; [L1045] static SSL_METHOD SSLv3_server_data ; VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1067] SSL *s ; [L1068] int tmp ; [L1072] s = malloc(sizeof(SSL)) [L1073] s->s3 = malloc(sizeof(struct ssl3_state_st)) [L1074] s->ctx = malloc(sizeof(SSL_CTX)) [L1075] s->session = malloc(sizeof(SSL_SESSION)) [L1076] s->state = 8464 [L1083] BUF_MEM *buf ; [L1084] unsigned long l ; [L1085] unsigned long Time ; [L1086] unsigned long tmp ; [L1087] void (*cb)() ; [L1088] long num1 ; [L1089] int ret ; [L1090] int new_state ; [L1091] int state ; [L1092] int skip ; [L1093] int got_new_session ; [L1094] int tmp___1 = __VERIFIER_nondet_int() ; [L1095] int tmp___2 = __VERIFIER_nondet_int() ; [L1096] int tmp___3 = __VERIFIER_nondet_int() ; [L1097] int tmp___4 = __VERIFIER_nondet_int() ; [L1098] int tmp___5 = __VERIFIER_nondet_int() ; [L1099] int tmp___6 = __VERIFIER_nondet_int() ; [L1100] int tmp___7 ; [L1101] long tmp___8 = __VERIFIER_nondet_long() ; [L1102] int tmp___9 = __VERIFIER_nondet_int() ; [L1103] int tmp___10 = __VERIFIER_nondet_int() ; [L1104] int blastFlag ; [L1108] blastFlag = 0 [L1109] s->hit=__VERIFIER_nondet_int () [L1110] s->state = 8464 [L1111] tmp = __VERIFIER_nondet_int() [L1112] Time = tmp [L1113] cb = (void (*)())((void *)0) [L1114] ret = -1 [L1115] skip = 0 [L1116] got_new_session = 0 [L1117] EXPR s->info_callback VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1117] COND TRUE (unsigned long )s->info_callback != (unsigned long )((void *)0) [L1118] EXPR s->info_callback [L1118] cb = s->info_callback [L1122] EXPR s->in_handshake [L1122] s->in_handshake += 1 [L1123] COND FALSE !(tmp___1 & 12288) VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1132] EXPR s->cert VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1132] COND FALSE !((unsigned long )s->cert == (unsigned long )((void *)0)) [L1138] COND TRUE 1 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1140] EXPR s->state [L1140] state = s->state [L1141] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1141] COND FALSE !(s->state == 12292) [L1144] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1144] COND FALSE !(s->state == 16384) [L1147] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1147] COND FALSE !(s->state == 8192) [L1150] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1150] COND FALSE !(s->state == 24576) [L1153] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1153] COND FALSE !(s->state == 8195) [L1156] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1156] COND FALSE !(s->state == 8480) [L1159] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1159] COND FALSE !(s->state == 8481) [L1162] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1162] COND FALSE !(s->state == 8482) [L1165] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1165] COND TRUE s->state == 8464 [L1325] s->shutdown = 0 [L1326] ret = __VERIFIER_nondet_int() [L1327] COND TRUE blastFlag == 0 [L1328] blastFlag = 1 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1332] COND FALSE !(ret <= 0) [L1337] got_new_session = 1 [L1338] s->state = 8496 [L1339] s->init_num = 0 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1663] EXPR s->s3 [L1663] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1663] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1692] skip = 0 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1138] COND TRUE 1 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1140] EXPR s->state [L1140] state = s->state [L1141] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1141] COND FALSE !(s->state == 12292) [L1144] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1144] COND FALSE !(s->state == 16384) [L1147] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1147] COND FALSE !(s->state == 8192) [L1150] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1150] COND FALSE !(s->state == 24576) [L1153] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1153] COND FALSE !(s->state == 8195) [L1156] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1156] COND FALSE !(s->state == 8480) [L1159] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1159] COND FALSE !(s->state == 8481) [L1162] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1162] COND FALSE !(s->state == 8482) [L1165] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1165] COND FALSE !(s->state == 8464) [L1168] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1168] COND FALSE !(s->state == 8465) [L1171] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1171] COND FALSE !(s->state == 8466) [L1174] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1174] COND TRUE s->state == 8496 [L1343] ret = __VERIFIER_nondet_int() [L1344] COND TRUE blastFlag == 1 [L1345] blastFlag = 2 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1353] COND FALSE !(ret <= 0) [L1358] s->hit VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1358] COND TRUE s->hit [L1359] s->state = 8656 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1363] s->init_num = 0 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1663] EXPR s->s3 [L1663] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1663] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1692] skip = 0 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1138] COND TRUE 1 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1140] EXPR s->state [L1140] state = s->state [L1141] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1141] COND FALSE !(s->state == 12292) [L1144] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1144] COND FALSE !(s->state == 16384) [L1147] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1147] COND FALSE !(s->state == 8192) [L1150] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1150] COND FALSE !(s->state == 24576) [L1153] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1153] COND FALSE !(s->state == 8195) [L1156] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1156] COND FALSE !(s->state == 8480) [L1159] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1159] COND FALSE !(s->state == 8481) [L1162] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1162] COND FALSE !(s->state == 8482) [L1165] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1165] COND FALSE !(s->state == 8464) [L1168] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1168] COND FALSE !(s->state == 8465) [L1171] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1171] COND FALSE !(s->state == 8466) [L1174] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1174] COND FALSE !(s->state == 8496) [L1177] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1177] COND FALSE !(s->state == 8497) [L1180] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1180] COND FALSE !(s->state == 8512) [L1183] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1183] COND FALSE !(s->state == 8513) [L1186] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1186] COND FALSE !(s->state == 8528) [L1189] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1189] COND FALSE !(s->state == 8529) [L1192] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1192] COND FALSE !(s->state == 8544) [L1195] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1195] COND FALSE !(s->state == 8545) [L1198] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1198] COND FALSE !(s->state == 8560) [L1201] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1201] COND FALSE !(s->state == 8561) [L1204] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1204] COND FALSE !(s->state == 8448) [L1207] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1207] COND FALSE !(s->state == 8576) [L1210] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1210] COND FALSE !(s->state == 8577) [L1213] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1213] COND FALSE !(s->state == 8592) [L1216] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1216] COND FALSE !(s->state == 8593) [L1219] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1219] COND FALSE !(s->state == 8608) [L1222] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1222] COND FALSE !(s->state == 8609) [L1225] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1225] COND FALSE !(s->state == 8640) [L1228] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1228] COND FALSE !(s->state == 8641) [L1231] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1231] COND TRUE s->state == 8656 [L1556] EXPR s->session [L1556] EXPR s->s3 [L1556] EXPR (s->s3)->tmp.new_cipher [L1556] (s->session)->cipher = (s->s3)->tmp.new_cipher [L1557] COND FALSE !(! tmp___9) [L1563] ret = __VERIFIER_nondet_int() [L1564] COND TRUE blastFlag == 2 [L1565] blastFlag = 3 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1569] COND FALSE !(ret <= 0) [L1574] s->state = 8672 [L1575] s->init_num = 0 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1576] COND FALSE !(! tmp___10) VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1663] EXPR s->s3 [L1663] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1663] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1692] skip = 0 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1138] COND TRUE 1 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1140] EXPR s->state [L1140] state = s->state [L1141] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1141] COND FALSE !(s->state == 12292) [L1144] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1144] COND FALSE !(s->state == 16384) [L1147] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1147] COND FALSE !(s->state == 8192) [L1150] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1150] COND FALSE !(s->state == 24576) [L1153] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1153] COND FALSE !(s->state == 8195) [L1156] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1156] COND FALSE !(s->state == 8480) [L1159] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1159] COND FALSE !(s->state == 8481) [L1162] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1162] COND FALSE !(s->state == 8482) [L1165] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1165] COND FALSE !(s->state == 8464) [L1168] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1168] COND FALSE !(s->state == 8465) [L1171] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1171] COND FALSE !(s->state == 8466) [L1174] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1174] COND FALSE !(s->state == 8496) [L1177] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1177] COND FALSE !(s->state == 8497) [L1180] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1180] COND FALSE !(s->state == 8512) [L1183] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1183] COND FALSE !(s->state == 8513) [L1186] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1186] COND FALSE !(s->state == 8528) [L1189] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1189] COND FALSE !(s->state == 8529) [L1192] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1192] COND FALSE !(s->state == 8544) [L1195] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1195] COND FALSE !(s->state == 8545) [L1198] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1198] COND FALSE !(s->state == 8560) [L1201] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1201] COND FALSE !(s->state == 8561) [L1204] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1204] COND FALSE !(s->state == 8448) [L1207] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1207] COND FALSE !(s->state == 8576) [L1210] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1210] COND FALSE !(s->state == 8577) [L1213] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1213] COND FALSE !(s->state == 8592) [L1216] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1216] COND FALSE !(s->state == 8593) [L1219] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1219] COND FALSE !(s->state == 8608) [L1222] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1222] COND FALSE !(s->state == 8609) [L1225] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1225] COND FALSE !(s->state == 8640) [L1228] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1228] COND FALSE !(s->state == 8641) [L1231] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1231] COND FALSE !(s->state == 8656) [L1234] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1234] COND FALSE !(s->state == 8657) [L1237] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1237] COND TRUE s->state == 8672 [L1585] ret = __VERIFIER_nondet_int() [L1586] COND TRUE blastFlag == 3 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L3] __assert_fail("0", "s3_srvr.blast.02.i.cil-1.c", 3, "reach_error") VAL [init=1, SSLv3_server_data={-2147483617:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 144 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.0s, OverallIterations: 3, TraceHistogramMax: 4, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 588 SDtfs, 843 SDslu, 783 SDs, 0 SdLazy, 48 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 292 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=597occurred in iteration=2, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 273 NumberOfCodeBlocks, 273 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 292 ConstructedInterpolants, 0 QuantifiedInterpolants, 74336 SizeOfPredicates, 1 NumberOfNonLiveVariables, 427 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 116/116 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...