./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl/s3_clnt.blast.03.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_125555a5-f25c-4937-8820-9e35c7878d61/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_125555a5-f25c-4937-8820-9e35c7878d61/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_125555a5-f25c-4937-8820-9e35c7878d61/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_125555a5-f25c-4937-8820-9e35c7878d61/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/openssl/s3_clnt.blast.03.i.cil-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_125555a5-f25c-4937-8820-9e35c7878d61/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_125555a5-f25c-4937-8820-9e35c7878d61/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 8334dcb0cdaf6693a0e55f9663f2e64fc956eb05 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_125555a5-f25c-4937-8820-9e35c7878d61/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_125555a5-f25c-4937-8820-9e35c7878d61/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_125555a5-f25c-4937-8820-9e35c7878d61/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_125555a5-f25c-4937-8820-9e35c7878d61/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/openssl/s3_clnt.blast.03.i.cil-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_125555a5-f25c-4937-8820-9e35c7878d61/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_125555a5-f25c-4937-8820-9e35c7878d61/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 8334dcb0cdaf6693a0e55f9663f2e64fc956eb05 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 19:59:06,186 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:59:06,190 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:59:06,277 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:59:06,291 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:59:06,307 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:59:06,310 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:59:06,313 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:59:06,316 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:59:06,317 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:59:06,319 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:59:06,322 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:59:06,323 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:59:06,325 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:59:06,329 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:59:06,331 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:59:06,334 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:59:06,340 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:59:06,343 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:59:06,350 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:59:06,355 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:59:06,357 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:59:06,360 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:59:06,361 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:59:06,376 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:59:06,377 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:59:06,377 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:59:06,380 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:59:06,381 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:59:06,383 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:59:06,383 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:59:06,385 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:59:06,387 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:59:06,389 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:59:06,391 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:59:06,391 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:59:06,392 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:59:06,392 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:59:06,393 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:59:06,394 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:59:06,395 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:59:06,399 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_125555a5-f25c-4937-8820-9e35c7878d61/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 19:59:06,455 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:59:06,456 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:59:06,458 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:59:06,459 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:59:06,459 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:59:06,459 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:59:06,460 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 19:59:06,460 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:59:06,460 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 19:59:06,461 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:59:06,462 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 19:59:06,463 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 19:59:06,463 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 19:59:06,463 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 19:59:06,463 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:59:06,464 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:59:06,464 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 19:59:06,465 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:59:06,465 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:59:06,465 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 19:59:06,465 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 19:59:06,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:59:06,466 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:59:06,466 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 19:59:06,467 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 19:59:06,467 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 19:59:06,467 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 19:59:06,468 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 19:59:06,468 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:59:06,468 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_125555a5-f25c-4937-8820-9e35c7878d61/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_125555a5-f25c-4937-8820-9e35c7878d61/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8334dcb0cdaf6693a0e55f9663f2e64fc956eb05 [2020-11-29 19:59:06,850 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:59:06,891 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:59:06,896 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:59:06,898 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:59:06,899 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:59:06,901 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_125555a5-f25c-4937-8820-9e35c7878d61/bin/uautomizer/../../sv-benchmarks/c/openssl/s3_clnt.blast.03.i.cil-1.c [2020-11-29 19:59:06,990 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_125555a5-f25c-4937-8820-9e35c7878d61/bin/uautomizer/data/00064cecb/675571872ab64cfea42626d24c119c5c/FLAGa3a7531bc [2020-11-29 19:59:07,845 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:59:07,846 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_125555a5-f25c-4937-8820-9e35c7878d61/sv-benchmarks/c/openssl/s3_clnt.blast.03.i.cil-1.c [2020-11-29 19:59:07,872 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_125555a5-f25c-4937-8820-9e35c7878d61/bin/uautomizer/data/00064cecb/675571872ab64cfea42626d24c119c5c/FLAGa3a7531bc [2020-11-29 19:59:08,039 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_125555a5-f25c-4937-8820-9e35c7878d61/bin/uautomizer/data/00064cecb/675571872ab64cfea42626d24c119c5c [2020-11-29 19:59:08,041 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:59:08,042 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:59:08,044 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:59:08,045 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:59:08,051 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:59:08,052 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:59:08" (1/1) ... [2020-11-29 19:59:08,055 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e5ae672 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:59:08, skipping insertion in model container [2020-11-29 19:59:08,056 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:59:08" (1/1) ... [2020-11-29 19:59:08,065 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:59:08,163 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:59:08,814 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:59:08,842 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:59:09,039 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:59:09,075 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:59:09,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:59:09 WrapperNode [2020-11-29 19:59:09,077 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:59:09,078 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:59:09,078 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:59:09,079 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:59:09,088 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:59:09" (1/1) ... [2020-11-29 19:59:09,138 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:59:09" (1/1) ... [2020-11-29 19:59:09,213 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:59:09,214 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:59:09,214 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:59:09,215 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:59:09,237 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:59:09" (1/1) ... [2020-11-29 19:59:09,237 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:59:09" (1/1) ... [2020-11-29 19:59:09,258 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:59:09" (1/1) ... [2020-11-29 19:59:09,271 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:59:09" (1/1) ... [2020-11-29 19:59:09,345 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:59:09" (1/1) ... [2020-11-29 19:59:09,358 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:59:09" (1/1) ... [2020-11-29 19:59:09,366 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:59:09" (1/1) ... [2020-11-29 19:59:09,373 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:59:09,374 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:59:09,375 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:59:09,375 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:59:09,376 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:59:09" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_125555a5-f25c-4937-8820-9e35c7878d61/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 19:59:09,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-29 19:59:09,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 19:59:09,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 19:59:09,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 19:59:09,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-29 19:59:09,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 19:59:09,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-29 19:59:09,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:59:09,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:59:10,066 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-11-29 19:59:11,377 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2020-11-29 19:59:11,377 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2020-11-29 19:59:11,387 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:59:11,387 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-29 19:59:11,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:59:11 BoogieIcfgContainer [2020-11-29 19:59:11,389 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:59:11,391 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 19:59:11,391 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 19:59:11,395 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 19:59:11,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:59:08" (1/3) ... [2020-11-29 19:59:11,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@710c9df9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:59:11, skipping insertion in model container [2020-11-29 19:59:11,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:59:09" (2/3) ... [2020-11-29 19:59:11,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@710c9df9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:59:11, skipping insertion in model container [2020-11-29 19:59:11,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:59:11" (3/3) ... [2020-11-29 19:59:11,400 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt.blast.03.i.cil-1.c [2020-11-29 19:59:11,413 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 19:59:11,419 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 19:59:11,433 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 19:59:11,478 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 19:59:11,479 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 19:59:11,479 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 19:59:11,479 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:59:11,479 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:59:11,479 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 19:59:11,480 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:59:11,480 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 19:59:11,504 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states. [2020-11-29 19:59:11,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-29 19:59:11,517 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:59:11,518 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] [2020-11-29 19:59:11,519 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:59:11,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:59:11,525 INFO L82 PathProgramCache]: Analyzing trace with hash -1457695037, now seen corresponding path program 1 times [2020-11-29 19:59:11,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:59:11,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969110111] [2020-11-29 19:59:11,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:59:11,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:59:11,964 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 19:59:11,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969110111] [2020-11-29 19:59:11,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:59:11,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:59:11,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327539883] [2020-11-29 19:59:11,981 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:59:11,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:59:12,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:59:12,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:59:12,006 INFO L87 Difference]: Start difference. First operand 130 states. Second operand 4 states. [2020-11-29 19:59:12,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:59:12,614 INFO L93 Difference]: Finished difference Result 256 states and 431 transitions. [2020-11-29 19:59:12,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:59:12,617 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-11-29 19:59:12,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:59:12,645 INFO L225 Difference]: With dead ends: 256 [2020-11-29 19:59:12,645 INFO L226 Difference]: Without dead ends: 116 [2020-11-29 19:59:12,649 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 19:59:12,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-11-29 19:59:12,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 115. [2020-11-29 19:59:12,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-11-29 19:59:12,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 172 transitions. [2020-11-29 19:59:12,718 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 172 transitions. Word has length 24 [2020-11-29 19:59:12,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:59:12,719 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 172 transitions. [2020-11-29 19:59:12,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:59:12,720 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 172 transitions. [2020-11-29 19:59:12,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-11-29 19:59:12,722 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:59:12,722 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] [2020-11-29 19:59:12,723 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 19:59:12,725 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:59:12,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:59:12,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1001988123, now seen corresponding path program 1 times [2020-11-29 19:59:12,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:59:12,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873178384] [2020-11-29 19:59:12,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:59:12,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:59:13,054 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-29 19:59:13,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873178384] [2020-11-29 19:59:13,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:59:13,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:59:13,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678936037] [2020-11-29 19:59:13,057 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:59:13,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:59:13,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:59:13,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:59:13,059 INFO L87 Difference]: Start difference. First operand 115 states and 172 transitions. Second operand 3 states. [2020-11-29 19:59:13,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:59:13,150 INFO L93 Difference]: Finished difference Result 321 states and 484 transitions. [2020-11-29 19:59:13,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:59:13,153 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2020-11-29 19:59:13,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:59:13,157 INFO L225 Difference]: With dead ends: 321 [2020-11-29 19:59:13,160 INFO L226 Difference]: Without dead ends: 216 [2020-11-29 19:59:13,162 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 19:59:13,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-11-29 19:59:13,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2020-11-29 19:59:13,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-11-29 19:59:13,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 320 transitions. [2020-11-29 19:59:13,207 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 320 transitions. Word has length 38 [2020-11-29 19:59:13,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:59:13,208 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 320 transitions. [2020-11-29 19:59:13,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:59:13,210 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 320 transitions. [2020-11-29 19:59:13,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-11-29 19:59:13,222 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:59:13,223 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-29 19:59:13,223 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 19:59:13,223 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:59:13,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:59:13,228 INFO L82 PathProgramCache]: Analyzing trace with hash -596933037, now seen corresponding path program 1 times [2020-11-29 19:59:13,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:59:13,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499019173] [2020-11-29 19:59:13,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:59:13,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:59:13,424 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-29 19:59:13,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499019173] [2020-11-29 19:59:13,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:59:13,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:59:13,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836315673] [2020-11-29 19:59:13,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:59:13,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:59:13,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:59:13,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:59:13,429 INFO L87 Difference]: Start difference. First operand 216 states and 320 transitions. Second operand 3 states. [2020-11-29 19:59:13,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:59:13,576 INFO L93 Difference]: Finished difference Result 420 states and 629 transitions. [2020-11-29 19:59:13,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:59:13,579 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2020-11-29 19:59:13,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:59:13,583 INFO L225 Difference]: With dead ends: 420 [2020-11-29 19:59:13,583 INFO L226 Difference]: Without dead ends: 315 [2020-11-29 19:59:13,585 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 19:59:13,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2020-11-29 19:59:13,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2020-11-29 19:59:13,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2020-11-29 19:59:13,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 466 transitions. [2020-11-29 19:59:13,636 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 466 transitions. Word has length 53 [2020-11-29 19:59:13,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:59:13,636 INFO L481 AbstractCegarLoop]: Abstraction has 315 states and 466 transitions. [2020-11-29 19:59:13,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:59:13,637 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 466 transitions. [2020-11-29 19:59:13,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-11-29 19:59:13,639 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:59:13,640 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:59:13,640 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 19:59:13,640 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:59:13,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:59:13,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1173568974, now seen corresponding path program 1 times [2020-11-29 19:59:13,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:59:13,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229792077] [2020-11-29 19:59:13,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:59:13,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:59:13,825 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-11-29 19:59:13,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229792077] [2020-11-29 19:59:13,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:59:13,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:59:13,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808546564] [2020-11-29 19:59:13,827 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:59:13,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:59:13,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:59:13,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:59:13,830 INFO L87 Difference]: Start difference. First operand 315 states and 466 transitions. Second operand 4 states. [2020-11-29 19:59:14,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:59:14,748 INFO L93 Difference]: Finished difference Result 806 states and 1197 transitions. [2020-11-29 19:59:14,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:59:14,749 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2020-11-29 19:59:14,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:59:14,757 INFO L225 Difference]: With dead ends: 806 [2020-11-29 19:59:14,758 INFO L226 Difference]: Without dead ends: 501 [2020-11-29 19:59:14,763 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 19:59:14,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2020-11-29 19:59:14,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 365. [2020-11-29 19:59:14,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2020-11-29 19:59:14,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 552 transitions. [2020-11-29 19:59:14,806 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 552 transitions. Word has length 71 [2020-11-29 19:59:14,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:59:14,807 INFO L481 AbstractCegarLoop]: Abstraction has 365 states and 552 transitions. [2020-11-29 19:59:14,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:59:14,807 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 552 transitions. [2020-11-29 19:59:14,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-11-29 19:59:14,812 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:59:14,813 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:59:14,813 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 19:59:14,814 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:59:14,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:59:14,814 INFO L82 PathProgramCache]: Analyzing trace with hash -1307582480, now seen corresponding path program 1 times [2020-11-29 19:59:14,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:59:14,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023761828] [2020-11-29 19:59:14,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:59:14,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:59:14,983 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-11-29 19:59:14,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023761828] [2020-11-29 19:59:14,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:59:14,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:59:14,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747227109] [2020-11-29 19:59:14,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:59:14,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:59:14,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:59:14,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:59:14,987 INFO L87 Difference]: Start difference. First operand 365 states and 552 transitions. Second operand 4 states. [2020-11-29 19:59:15,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:59:15,569 INFO L93 Difference]: Finished difference Result 806 states and 1218 transitions. [2020-11-29 19:59:15,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:59:15,571 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2020-11-29 19:59:15,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:59:15,578 INFO L225 Difference]: With dead ends: 806 [2020-11-29 19:59:15,578 INFO L226 Difference]: Without dead ends: 451 [2020-11-29 19:59:15,579 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 19:59:15,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2020-11-29 19:59:15,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 405. [2020-11-29 19:59:15,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 405 states. [2020-11-29 19:59:15,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 620 transitions. [2020-11-29 19:59:15,604 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 620 transitions. Word has length 71 [2020-11-29 19:59:15,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:59:15,605 INFO L481 AbstractCegarLoop]: Abstraction has 405 states and 620 transitions. [2020-11-29 19:59:15,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:59:15,605 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 620 transitions. [2020-11-29 19:59:15,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-11-29 19:59:15,607 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:59:15,607 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:59:15,607 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 19:59:15,607 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:59:15,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:59:15,608 INFO L82 PathProgramCache]: Analyzing trace with hash -2025585655, now seen corresponding path program 1 times [2020-11-29 19:59:15,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:59:15,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626344346] [2020-11-29 19:59:15,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:59:15,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:59:15,797 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-11-29 19:59:15,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626344346] [2020-11-29 19:59:15,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:59:15,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:59:15,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387779537] [2020-11-29 19:59:15,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:59:15,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:59:15,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:59:15,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:59:15,801 INFO L87 Difference]: Start difference. First operand 405 states and 620 transitions. Second operand 4 states. [2020-11-29 19:59:16,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:59:16,589 INFO L93 Difference]: Finished difference Result 928 states and 1409 transitions. [2020-11-29 19:59:16,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:59:16,592 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 72 [2020-11-29 19:59:16,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:59:16,599 INFO L225 Difference]: With dead ends: 928 [2020-11-29 19:59:16,603 INFO L226 Difference]: Without dead ends: 533 [2020-11-29 19:59:16,605 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 19:59:16,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2020-11-29 19:59:16,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 407. [2020-11-29 19:59:16,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-11-29 19:59:16,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 622 transitions. [2020-11-29 19:59:16,628 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 622 transitions. Word has length 72 [2020-11-29 19:59:16,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:59:16,630 INFO L481 AbstractCegarLoop]: Abstraction has 407 states and 622 transitions. [2020-11-29 19:59:16,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:59:16,630 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 622 transitions. [2020-11-29 19:59:16,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-11-29 19:59:16,640 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:59:16,640 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 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] [2020-11-29 19:59:16,640 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 19:59:16,641 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:59:16,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:59:16,641 INFO L82 PathProgramCache]: Analyzing trace with hash 703880522, now seen corresponding path program 2 times [2020-11-29 19:59:16,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:59:16,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289333482] [2020-11-29 19:59:16,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:59:16,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:59:16,819 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-11-29 19:59:16,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289333482] [2020-11-29 19:59:16,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:59:16,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:59:16,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181484539] [2020-11-29 19:59:16,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:59:16,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:59:16,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:59:16,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:59:16,823 INFO L87 Difference]: Start difference. First operand 407 states and 622 transitions. Second operand 4 states. [2020-11-29 19:59:17,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:59:17,666 INFO L93 Difference]: Finished difference Result 928 states and 1407 transitions. [2020-11-29 19:59:17,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:59:17,667 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2020-11-29 19:59:17,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:59:17,672 INFO L225 Difference]: With dead ends: 928 [2020-11-29 19:59:17,672 INFO L226 Difference]: Without dead ends: 531 [2020-11-29 19:59:17,673 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 19:59:17,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2020-11-29 19:59:17,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 407. [2020-11-29 19:59:17,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-11-29 19:59:17,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 620 transitions. [2020-11-29 19:59:17,691 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 620 transitions. Word has length 85 [2020-11-29 19:59:17,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:59:17,692 INFO L481 AbstractCegarLoop]: Abstraction has 407 states and 620 transitions. [2020-11-29 19:59:17,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:59:17,692 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 620 transitions. [2020-11-29 19:59:17,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-11-29 19:59:17,694 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:59:17,694 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 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] [2020-11-29 19:59:17,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-29 19:59:17,695 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:59:17,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:59:17,695 INFO L82 PathProgramCache]: Analyzing trace with hash -405099924, now seen corresponding path program 1 times [2020-11-29 19:59:17,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:59:17,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365623505] [2020-11-29 19:59:17,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:59:17,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:59:17,803 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-11-29 19:59:17,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365623505] [2020-11-29 19:59:17,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:59:17,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:59:17,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36101132] [2020-11-29 19:59:17,805 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:59:17,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:59:17,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:59:17,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:59:17,806 INFO L87 Difference]: Start difference. First operand 407 states and 620 transitions. Second operand 4 states. [2020-11-29 19:59:18,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:59:18,659 INFO L93 Difference]: Finished difference Result 928 states and 1403 transitions. [2020-11-29 19:59:18,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:59:18,662 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2020-11-29 19:59:18,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:59:18,666 INFO L225 Difference]: With dead ends: 928 [2020-11-29 19:59:18,666 INFO L226 Difference]: Without dead ends: 531 [2020-11-29 19:59:18,668 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 19:59:18,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2020-11-29 19:59:18,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 407. [2020-11-29 19:59:18,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-11-29 19:59:18,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 618 transitions. [2020-11-29 19:59:18,685 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 618 transitions. Word has length 85 [2020-11-29 19:59:18,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:59:18,686 INFO L481 AbstractCegarLoop]: Abstraction has 407 states and 618 transitions. [2020-11-29 19:59:18,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:59:18,686 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 618 transitions. [2020-11-29 19:59:18,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-11-29 19:59:18,688 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:59:18,688 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 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] [2020-11-29 19:59:18,688 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-29 19:59:18,689 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:59:18,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:59:18,689 INFO L82 PathProgramCache]: Analyzing trace with hash -325478776, now seen corresponding path program 2 times [2020-11-29 19:59:18,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:59:18,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816029073] [2020-11-29 19:59:18,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:59:18,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:59:18,818 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-11-29 19:59:18,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816029073] [2020-11-29 19:59:18,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:59:18,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:59:18,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553735126] [2020-11-29 19:59:18,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:59:18,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:59:18,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:59:18,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:59:18,822 INFO L87 Difference]: Start difference. First operand 407 states and 618 transitions. Second operand 4 states. [2020-11-29 19:59:19,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:59:19,424 INFO L93 Difference]: Finished difference Result 848 states and 1278 transitions. [2020-11-29 19:59:19,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:59:19,425 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2020-11-29 19:59:19,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:59:19,429 INFO L225 Difference]: With dead ends: 848 [2020-11-29 19:59:19,429 INFO L226 Difference]: Without dead ends: 451 [2020-11-29 19:59:19,430 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 19:59:19,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2020-11-29 19:59:19,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 407. [2020-11-29 19:59:19,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-11-29 19:59:19,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 616 transitions. [2020-11-29 19:59:19,447 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 616 transitions. Word has length 85 [2020-11-29 19:59:19,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:59:19,447 INFO L481 AbstractCegarLoop]: Abstraction has 407 states and 616 transitions. [2020-11-29 19:59:19,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:59:19,448 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 616 transitions. [2020-11-29 19:59:19,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-11-29 19:59:19,449 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:59:19,450 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 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] [2020-11-29 19:59:19,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-29 19:59:19,450 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:59:19,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:59:19,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1434459222, now seen corresponding path program 1 times [2020-11-29 19:59:19,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:59:19,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168153014] [2020-11-29 19:59:19,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:59:19,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:59:19,538 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-11-29 19:59:19,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168153014] [2020-11-29 19:59:19,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:59:19,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:59:19,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519990369] [2020-11-29 19:59:19,540 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:59:19,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:59:19,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:59:19,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:59:19,541 INFO L87 Difference]: Start difference. First operand 407 states and 616 transitions. Second operand 4 states. [2020-11-29 19:59:20,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:59:20,172 INFO L93 Difference]: Finished difference Result 848 states and 1274 transitions. [2020-11-29 19:59:20,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:59:20,173 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2020-11-29 19:59:20,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:59:20,177 INFO L225 Difference]: With dead ends: 848 [2020-11-29 19:59:20,177 INFO L226 Difference]: Without dead ends: 451 [2020-11-29 19:59:20,178 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 19:59:20,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2020-11-29 19:59:20,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 407. [2020-11-29 19:59:20,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-11-29 19:59:20,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 614 transitions. [2020-11-29 19:59:20,195 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 614 transitions. Word has length 85 [2020-11-29 19:59:20,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:59:20,195 INFO L481 AbstractCegarLoop]: Abstraction has 407 states and 614 transitions. [2020-11-29 19:59:20,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:59:20,196 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 614 transitions. [2020-11-29 19:59:20,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-11-29 19:59:20,198 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:59:20,198 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 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] [2020-11-29 19:59:20,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-29 19:59:20,198 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:59:20,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:59:20,199 INFO L82 PathProgramCache]: Analyzing trace with hash 381197251, now seen corresponding path program 1 times [2020-11-29 19:59:20,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:59:20,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047639255] [2020-11-29 19:59:20,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:59:20,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:59:20,305 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-11-29 19:59:20,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047639255] [2020-11-29 19:59:20,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:59:20,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:59:20,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723926064] [2020-11-29 19:59:20,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:59:20,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:59:20,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:59:20,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:59:20,309 INFO L87 Difference]: Start difference. First operand 407 states and 614 transitions. Second operand 4 states. [2020-11-29 19:59:21,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:59:21,073 INFO L93 Difference]: Finished difference Result 928 states and 1391 transitions. [2020-11-29 19:59:21,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:59:21,075 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 86 [2020-11-29 19:59:21,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:59:21,079 INFO L225 Difference]: With dead ends: 928 [2020-11-29 19:59:21,079 INFO L226 Difference]: Without dead ends: 531 [2020-11-29 19:59:21,081 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 19:59:21,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2020-11-29 19:59:21,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 407. [2020-11-29 19:59:21,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-11-29 19:59:21,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 612 transitions. [2020-11-29 19:59:21,100 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 612 transitions. Word has length 86 [2020-11-29 19:59:21,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:59:21,100 INFO L481 AbstractCegarLoop]: Abstraction has 407 states and 612 transitions. [2020-11-29 19:59:21,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:59:21,100 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 612 transitions. [2020-11-29 19:59:21,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-11-29 19:59:21,102 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:59:21,102 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-11-29 19:59:21,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-29 19:59:21,103 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:59:21,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:59:21,104 INFO L82 PathProgramCache]: Analyzing trace with hash 681258334, now seen corresponding path program 1 times [2020-11-29 19:59:21,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:59:21,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13264609] [2020-11-29 19:59:21,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:59:21,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:59:21,195 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-11-29 19:59:21,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13264609] [2020-11-29 19:59:21,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:59:21,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:59:21,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602905764] [2020-11-29 19:59:21,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:59:21,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:59:21,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:59:21,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:59:21,198 INFO L87 Difference]: Start difference. First operand 407 states and 612 transitions. Second operand 4 states. [2020-11-29 19:59:22,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:59:22,102 INFO L93 Difference]: Finished difference Result 783 states and 1168 transitions. [2020-11-29 19:59:22,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:59:22,103 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 86 [2020-11-29 19:59:22,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:59:22,106 INFO L225 Difference]: With dead ends: 783 [2020-11-29 19:59:22,106 INFO L226 Difference]: Without dead ends: 531 [2020-11-29 19:59:22,107 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 19:59:22,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2020-11-29 19:59:22,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 407. [2020-11-29 19:59:22,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-11-29 19:59:22,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 610 transitions. [2020-11-29 19:59:22,121 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 610 transitions. Word has length 86 [2020-11-29 19:59:22,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:59:22,121 INFO L481 AbstractCegarLoop]: Abstraction has 407 states and 610 transitions. [2020-11-29 19:59:22,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:59:22,122 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 610 transitions. [2020-11-29 19:59:22,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-11-29 19:59:22,127 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:59:22,127 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 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] [2020-11-29 19:59:22,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-29 19:59:22,128 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:59:22,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:59:22,128 INFO L82 PathProgramCache]: Analyzing trace with hash -1464169915, now seen corresponding path program 1 times [2020-11-29 19:59:22,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:59:22,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937000393] [2020-11-29 19:59:22,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:59:22,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:59:22,246 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-11-29 19:59:22,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937000393] [2020-11-29 19:59:22,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:59:22,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:59:22,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790489637] [2020-11-29 19:59:22,249 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:59:22,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:59:22,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:59:22,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:59:22,250 INFO L87 Difference]: Start difference. First operand 407 states and 610 transitions. Second operand 4 states. [2020-11-29 19:59:22,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:59:22,871 INFO L93 Difference]: Finished difference Result 848 states and 1262 transitions. [2020-11-29 19:59:22,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:59:22,872 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 86 [2020-11-29 19:59:22,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:59:22,876 INFO L225 Difference]: With dead ends: 848 [2020-11-29 19:59:22,876 INFO L226 Difference]: Without dead ends: 451 [2020-11-29 19:59:22,878 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 19:59:22,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2020-11-29 19:59:22,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 407. [2020-11-29 19:59:22,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-11-29 19:59:22,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 608 transitions. [2020-11-29 19:59:22,895 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 608 transitions. Word has length 86 [2020-11-29 19:59:22,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:59:22,895 INFO L481 AbstractCegarLoop]: Abstraction has 407 states and 608 transitions. [2020-11-29 19:59:22,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:59:22,896 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 608 transitions. [2020-11-29 19:59:22,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-11-29 19:59:22,897 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:59:22,898 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-11-29 19:59:22,898 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-29 19:59:22,898 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:59:22,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:59:22,899 INFO L82 PathProgramCache]: Analyzing trace with hash -1164108832, now seen corresponding path program 1 times [2020-11-29 19:59:22,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:59:22,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417633119] [2020-11-29 19:59:22,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:59:22,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:59:23,015 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-11-29 19:59:23,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417633119] [2020-11-29 19:59:23,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:59:23,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:59:23,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005722637] [2020-11-29 19:59:23,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:59:23,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:59:23,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:59:23,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:59:23,018 INFO L87 Difference]: Start difference. First operand 407 states and 608 transitions. Second operand 4 states. [2020-11-29 19:59:23,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:59:23,623 INFO L93 Difference]: Finished difference Result 703 states and 1041 transitions. [2020-11-29 19:59:23,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:59:23,624 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 86 [2020-11-29 19:59:23,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:59:23,628 INFO L225 Difference]: With dead ends: 703 [2020-11-29 19:59:23,628 INFO L226 Difference]: Without dead ends: 451 [2020-11-29 19:59:23,630 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 19:59:23,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2020-11-29 19:59:23,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 407. [2020-11-29 19:59:23,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-11-29 19:59:23,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 606 transitions. [2020-11-29 19:59:23,649 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 606 transitions. Word has length 86 [2020-11-29 19:59:23,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:59:23,649 INFO L481 AbstractCegarLoop]: Abstraction has 407 states and 606 transitions. [2020-11-29 19:59:23,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:59:23,649 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 606 transitions. [2020-11-29 19:59:23,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-11-29 19:59:23,651 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:59:23,652 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 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] [2020-11-29 19:59:23,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-29 19:59:23,652 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:59:23,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:59:23,653 INFO L82 PathProgramCache]: Analyzing trace with hash -956813465, now seen corresponding path program 1 times [2020-11-29 19:59:23,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:59:23,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754135707] [2020-11-29 19:59:23,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:59:23,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:59:23,749 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-11-29 19:59:23,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754135707] [2020-11-29 19:59:23,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:59:23,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:59:23,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881505159] [2020-11-29 19:59:23,750 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:59:23,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:59:23,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:59:23,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:59:23,752 INFO L87 Difference]: Start difference. First operand 407 states and 606 transitions. Second operand 4 states. [2020-11-29 19:59:24,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:59:24,486 INFO L93 Difference]: Finished difference Result 928 states and 1375 transitions. [2020-11-29 19:59:24,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:59:24,487 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2020-11-29 19:59:24,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:59:24,490 INFO L225 Difference]: With dead ends: 928 [2020-11-29 19:59:24,490 INFO L226 Difference]: Without dead ends: 531 [2020-11-29 19:59:24,491 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 19:59:24,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2020-11-29 19:59:24,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 407. [2020-11-29 19:59:24,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-11-29 19:59:24,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 604 transitions. [2020-11-29 19:59:24,507 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 604 transitions. Word has length 87 [2020-11-29 19:59:24,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:59:24,508 INFO L481 AbstractCegarLoop]: Abstraction has 407 states and 604 transitions. [2020-11-29 19:59:24,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:59:24,508 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 604 transitions. [2020-11-29 19:59:24,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-11-29 19:59:24,509 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:59:24,510 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-11-29 19:59:24,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-29 19:59:24,510 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:59:24,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:59:24,511 INFO L82 PathProgramCache]: Analyzing trace with hash 2048176167, now seen corresponding path program 1 times [2020-11-29 19:59:24,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:59:24,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872665796] [2020-11-29 19:59:24,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:59:24,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:59:24,590 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-11-29 19:59:24,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872665796] [2020-11-29 19:59:24,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:59:24,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:59:24,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977354079] [2020-11-29 19:59:24,592 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:59:24,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:59:24,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:59:24,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:59:24,593 INFO L87 Difference]: Start difference. First operand 407 states and 604 transitions. Second operand 4 states. [2020-11-29 19:59:25,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:59:25,375 INFO L93 Difference]: Finished difference Result 777 states and 1149 transitions. [2020-11-29 19:59:25,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:59:25,376 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2020-11-29 19:59:25,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:59:25,380 INFO L225 Difference]: With dead ends: 777 [2020-11-29 19:59:25,380 INFO L226 Difference]: Without dead ends: 525 [2020-11-29 19:59:25,381 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 19:59:25,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2020-11-29 19:59:25,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 407. [2020-11-29 19:59:25,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-11-29 19:59:25,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 602 transitions. [2020-11-29 19:59:25,400 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 602 transitions. Word has length 87 [2020-11-29 19:59:25,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:59:25,400 INFO L481 AbstractCegarLoop]: Abstraction has 407 states and 602 transitions. [2020-11-29 19:59:25,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:59:25,401 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 602 transitions. [2020-11-29 19:59:25,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-11-29 19:59:25,402 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:59:25,403 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 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] [2020-11-29 19:59:25,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-29 19:59:25,403 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:59:25,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:59:25,404 INFO L82 PathProgramCache]: Analyzing trace with hash 1966346533, now seen corresponding path program 1 times [2020-11-29 19:59:25,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:59:25,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245662049] [2020-11-29 19:59:25,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:59:25,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:59:25,494 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-11-29 19:59:25,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245662049] [2020-11-29 19:59:25,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:59:25,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:59:25,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814883021] [2020-11-29 19:59:25,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:59:25,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:59:25,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:59:25,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:59:25,498 INFO L87 Difference]: Start difference. First operand 407 states and 602 transitions. Second operand 4 states. [2020-11-29 19:59:26,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:59:26,163 INFO L93 Difference]: Finished difference Result 848 states and 1246 transitions. [2020-11-29 19:59:26,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:59:26,164 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2020-11-29 19:59:26,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:59:26,168 INFO L225 Difference]: With dead ends: 848 [2020-11-29 19:59:26,168 INFO L226 Difference]: Without dead ends: 451 [2020-11-29 19:59:26,170 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 19:59:26,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2020-11-29 19:59:26,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 407. [2020-11-29 19:59:26,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-11-29 19:59:26,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 600 transitions. [2020-11-29 19:59:26,191 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 600 transitions. Word has length 87 [2020-11-29 19:59:26,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:59:26,191 INFO L481 AbstractCegarLoop]: Abstraction has 407 states and 600 transitions. [2020-11-29 19:59:26,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:59:26,192 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 600 transitions. [2020-11-29 19:59:26,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-11-29 19:59:26,193 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:59:26,194 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-11-29 19:59:26,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-11-29 19:59:26,194 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:59:26,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:59:26,195 INFO L82 PathProgramCache]: Analyzing trace with hash 676368869, now seen corresponding path program 1 times [2020-11-29 19:59:26,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:59:26,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646453091] [2020-11-29 19:59:26,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:59:26,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:59:26,315 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-11-29 19:59:26,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646453091] [2020-11-29 19:59:26,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:59:26,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:59:26,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056965037] [2020-11-29 19:59:26,320 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:59:26,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:59:26,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:59:26,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:59:26,321 INFO L87 Difference]: Start difference. First operand 407 states and 600 transitions. Second operand 4 states. [2020-11-29 19:59:27,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:59:27,011 INFO L93 Difference]: Finished difference Result 697 states and 1022 transitions. [2020-11-29 19:59:27,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:59:27,012 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2020-11-29 19:59:27,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:59:27,016 INFO L225 Difference]: With dead ends: 697 [2020-11-29 19:59:27,016 INFO L226 Difference]: Without dead ends: 445 [2020-11-29 19:59:27,017 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 19:59:27,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2020-11-29 19:59:27,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 407. [2020-11-29 19:59:27,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-11-29 19:59:27,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 598 transitions. [2020-11-29 19:59:27,033 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 598 transitions. Word has length 87 [2020-11-29 19:59:27,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:59:27,034 INFO L481 AbstractCegarLoop]: Abstraction has 407 states and 598 transitions. [2020-11-29 19:59:27,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:59:27,034 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 598 transitions. [2020-11-29 19:59:27,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-11-29 19:59:27,036 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:59:27,036 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 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] [2020-11-29 19:59:27,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-11-29 19:59:27,037 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:59:27,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:59:27,037 INFO L82 PathProgramCache]: Analyzing trace with hash 571107934, now seen corresponding path program 1 times [2020-11-29 19:59:27,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:59:27,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854186943] [2020-11-29 19:59:27,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:59:27,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:59:27,126 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-11-29 19:59:27,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854186943] [2020-11-29 19:59:27,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:59:27,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:59:27,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492277485] [2020-11-29 19:59:27,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:59:27,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:59:27,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:59:27,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:59:27,129 INFO L87 Difference]: Start difference. First operand 407 states and 598 transitions. Second operand 4 states. [2020-11-29 19:59:27,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:59:27,873 INFO L93 Difference]: Finished difference Result 904 states and 1330 transitions. [2020-11-29 19:59:27,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:59:27,874 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2020-11-29 19:59:27,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:59:27,877 INFO L225 Difference]: With dead ends: 904 [2020-11-29 19:59:27,877 INFO L226 Difference]: Without dead ends: 507 [2020-11-29 19:59:27,878 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 19:59:27,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2020-11-29 19:59:27,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 407. [2020-11-29 19:59:27,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-11-29 19:59:27,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 596 transitions. [2020-11-29 19:59:27,891 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 596 transitions. Word has length 88 [2020-11-29 19:59:27,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:59:27,892 INFO L481 AbstractCegarLoop]: Abstraction has 407 states and 596 transitions. [2020-11-29 19:59:27,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:59:27,892 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 596 transitions. [2020-11-29 19:59:27,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-11-29 19:59:27,894 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:59:27,894 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 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] [2020-11-29 19:59:27,894 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-11-29 19:59:27,894 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:59:27,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:59:27,895 INFO L82 PathProgramCache]: Analyzing trace with hash 994754656, now seen corresponding path program 1 times [2020-11-29 19:59:27,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:59:27,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978855031] [2020-11-29 19:59:27,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:59:27,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:59:27,969 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-11-29 19:59:27,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978855031] [2020-11-29 19:59:27,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:59:27,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:59:27,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249741363] [2020-11-29 19:59:27,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:59:27,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:59:27,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:59:27,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:59:27,971 INFO L87 Difference]: Start difference. First operand 407 states and 596 transitions. Second operand 4 states. [2020-11-29 19:59:28,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:59:28,364 INFO L93 Difference]: Finished difference Result 824 states and 1205 transitions. [2020-11-29 19:59:28,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:59:28,365 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2020-11-29 19:59:28,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:59:28,367 INFO L225 Difference]: With dead ends: 824 [2020-11-29 19:59:28,367 INFO L226 Difference]: Without dead ends: 427 [2020-11-29 19:59:28,368 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 19:59:28,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2020-11-29 19:59:28,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 407. [2020-11-29 19:59:28,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-11-29 19:59:28,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 594 transitions. [2020-11-29 19:59:28,381 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 594 transitions. Word has length 88 [2020-11-29 19:59:28,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:59:28,382 INFO L481 AbstractCegarLoop]: Abstraction has 407 states and 594 transitions. [2020-11-29 19:59:28,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:59:28,382 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 594 transitions. [2020-11-29 19:59:28,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-11-29 19:59:28,383 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:59:28,384 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:59:28,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-11-29 19:59:28,384 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:59:28,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:59:28,384 INFO L82 PathProgramCache]: Analyzing trace with hash -433365501, now seen corresponding path program 1 times [2020-11-29 19:59:28,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:59:28,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072831385] [2020-11-29 19:59:28,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:59:28,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:59:28,472 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-11-29 19:59:28,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072831385] [2020-11-29 19:59:28,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:59:28,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:59:28,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723350639] [2020-11-29 19:59:28,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:59:28,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:59:28,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:59:28,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:59:28,481 INFO L87 Difference]: Start difference. First operand 407 states and 594 transitions. Second operand 4 states. [2020-11-29 19:59:29,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:59:29,191 INFO L93 Difference]: Finished difference Result 904 states and 1322 transitions. [2020-11-29 19:59:29,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:59:29,191 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 89 [2020-11-29 19:59:29,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:59:29,196 INFO L225 Difference]: With dead ends: 904 [2020-11-29 19:59:29,196 INFO L226 Difference]: Without dead ends: 507 [2020-11-29 19:59:29,197 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 19:59:29,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2020-11-29 19:59:29,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 407. [2020-11-29 19:59:29,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-11-29 19:59:29,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 592 transitions. [2020-11-29 19:59:29,214 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 592 transitions. Word has length 89 [2020-11-29 19:59:29,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:59:29,214 INFO L481 AbstractCegarLoop]: Abstraction has 407 states and 592 transitions. [2020-11-29 19:59:29,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:59:29,214 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 592 transitions. [2020-11-29 19:59:29,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-11-29 19:59:29,216 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:59:29,216 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:59:29,216 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-11-29 19:59:29,217 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:59:29,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:59:29,217 INFO L82 PathProgramCache]: Analyzing trace with hash -185219007, now seen corresponding path program 1 times [2020-11-29 19:59:29,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:59:29,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229955507] [2020-11-29 19:59:29,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:59:29,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:59:29,297 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-11-29 19:59:29,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229955507] [2020-11-29 19:59:29,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:59:29,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:59:29,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154170077] [2020-11-29 19:59:29,298 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:59:29,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:59:29,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:59:29,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:59:29,300 INFO L87 Difference]: Start difference. First operand 407 states and 592 transitions. Second operand 3 states. [2020-11-29 19:59:29,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:59:29,418 INFO L93 Difference]: Finished difference Result 805 states and 1178 transitions. [2020-11-29 19:59:29,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:59:29,422 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 89 [2020-11-29 19:59:29,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:59:29,426 INFO L225 Difference]: With dead ends: 805 [2020-11-29 19:59:29,426 INFO L226 Difference]: Without dead ends: 555 [2020-11-29 19:59:29,427 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 19:59:29,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-11-29 19:59:29,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 555. [2020-11-29 19:59:29,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 555 states. [2020-11-29 19:59:29,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 805 transitions. [2020-11-29 19:59:29,450 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 805 transitions. Word has length 89 [2020-11-29 19:59:29,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:59:29,450 INFO L481 AbstractCegarLoop]: Abstraction has 555 states and 805 transitions. [2020-11-29 19:59:29,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:59:29,450 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 805 transitions. [2020-11-29 19:59:29,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-11-29 19:59:29,452 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:59:29,453 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:59:29,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-11-29 19:59:29,453 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:59:29,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:59:29,454 INFO L82 PathProgramCache]: Analyzing trace with hash 1027809079, now seen corresponding path program 1 times [2020-11-29 19:59:29,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:59:29,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230738226] [2020-11-29 19:59:29,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:59:29,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:59:29,559 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-11-29 19:59:29,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230738226] [2020-11-29 19:59:29,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:59:29,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:59:29,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434835464] [2020-11-29 19:59:29,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:59:29,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:59:29,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:59:29,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:59:29,562 INFO L87 Difference]: Start difference. First operand 555 states and 805 transitions. Second operand 3 states. [2020-11-29 19:59:29,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:59:29,624 INFO L93 Difference]: Finished difference Result 1102 states and 1605 transitions. [2020-11-29 19:59:29,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:59:29,625 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-11-29 19:59:29,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:59:29,630 INFO L225 Difference]: With dead ends: 1102 [2020-11-29 19:59:29,630 INFO L226 Difference]: Without dead ends: 704 [2020-11-29 19:59:29,631 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 19:59:29,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2020-11-29 19:59:29,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 704. [2020-11-29 19:59:29,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 704 states. [2020-11-29 19:59:29,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 1023 transitions. [2020-11-29 19:59:29,656 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 1023 transitions. Word has length 91 [2020-11-29 19:59:29,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:59:29,657 INFO L481 AbstractCegarLoop]: Abstraction has 704 states and 1023 transitions. [2020-11-29 19:59:29,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:59:29,657 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 1023 transitions. [2020-11-29 19:59:29,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-11-29 19:59:29,659 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:59:29,660 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:59:29,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-11-29 19:59:29,660 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:59:29,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:59:29,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1254631592, now seen corresponding path program 1 times [2020-11-29 19:59:29,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:59:29,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716201322] [2020-11-29 19:59:29,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:59:29,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:59:29,897 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:59:30,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:59:30,101 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:59:30,247 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:59:30,248 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 19:59:30,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-11-29 19:59:30,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 07:59:30 BoogieIcfgContainer [2020-11-29 19:59:30,444 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 19:59:30,445 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:59:30,446 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:59:30,446 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:59:30,448 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:59:11" (3/4) ... [2020-11-29 19:59:30,451 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 19:59:30,452 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:59:30,454 INFO L168 Benchmark]: Toolchain (without parser) took 22410.34 ms. Allocated memory was 90.2 MB in the beginning and 167.8 MB in the end (delta: 77.6 MB). Free memory was 59.6 MB in the beginning and 116.2 MB in the end (delta: -56.6 MB). Peak memory consumption was 20.2 MB. Max. memory is 16.1 GB. [2020-11-29 19:59:30,455 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 90.2 MB. Free memory was 51.6 MB in the beginning and 51.6 MB in the end (delta: 43.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:59:30,455 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1033.00 ms. Allocated memory is still 90.2 MB. Free memory was 59.4 MB in the beginning and 48.8 MB in the end (delta: 10.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-29 19:59:30,456 INFO L168 Benchmark]: Boogie Procedure Inliner took 135.46 ms. Allocated memory is still 90.2 MB. Free memory was 48.8 MB in the beginning and 44.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 19:59:30,456 INFO L168 Benchmark]: Boogie Preprocessor took 159.31 ms. Allocated memory is still 90.2 MB. Free memory was 44.6 MB in the beginning and 38.1 MB in the end (delta: 6.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-29 19:59:30,457 INFO L168 Benchmark]: RCFGBuilder took 2014.88 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 38.1 MB in the beginning and 42.7 MB in the end (delta: -4.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:59:30,457 INFO L168 Benchmark]: TraceAbstraction took 19053.63 ms. Allocated memory was 109.1 MB in the beginning and 167.8 MB in the end (delta: 58.7 MB). Free memory was 42.7 MB in the beginning and 116.2 MB in the end (delta: -73.5 MB). Peak memory consumption was 68.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:59:30,458 INFO L168 Benchmark]: Witness Printer took 6.51 ms. Allocated memory is still 167.8 MB. Free memory is still 116.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:59:30,460 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 90.2 MB. Free memory was 51.6 MB in the beginning and 51.6 MB in the end (delta: 43.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1033.00 ms. Allocated memory is still 90.2 MB. Free memory was 59.4 MB in the beginning and 48.8 MB in the end (delta: 10.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 135.46 ms. Allocated memory is still 90.2 MB. Free memory was 48.8 MB in the beginning and 44.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 159.31 ms. Allocated memory is still 90.2 MB. Free memory was 44.6 MB in the beginning and 38.1 MB in the end (delta: 6.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2014.88 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 38.1 MB in the beginning and 42.7 MB in the end (delta: -4.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 19053.63 ms. Allocated memory was 109.1 MB in the beginning and 167.8 MB in the end (delta: 58.7 MB). Free memory was 42.7 MB in the beginning and 116.2 MB in the end (delta: -73.5 MB). Peak memory consumption was 68.1 MB. Max. memory is 16.1 GB. * Witness Printer took 6.51 ms. Allocated memory is still 167.8 MB. Free memory is still 116.2 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 1338. Possible FailurePath: [L1044] static int init = 1; [L1045] static SSL_METHOD SSLv3_client_data ; VAL [init=1, SSLv3_client_data={5:0}] [L1067] SSL *s = (SSL*)malloc(sizeof(SSL)) ; [L1071] s->s3 = malloc(sizeof(struct ssl3_state_st)) [L1072] s->ctx = malloc(sizeof(SSL_CTX)) [L1073] s->session = malloc(sizeof(SSL_SESSION)) [L1074] s->state = 12292 [L1075] s->version = __VERIFIER_nondet_int() [L1082] BUF_MEM *buf ; [L1083] unsigned long tmp ; [L1084] unsigned long l ; [L1085] long num1 ; [L1086] void (*cb)() ; [L1087] int ret ; [L1088] int new_state ; [L1089] int state ; [L1090] int skip ; [L1091] int tmp___1 = __VERIFIER_nondet_int() ; [L1092] int tmp___2 = __VERIFIER_nondet_int() ; [L1093] int tmp___3 = __VERIFIER_nondet_int() ; [L1094] int tmp___4 = __VERIFIER_nondet_int() ; [L1095] int tmp___5 = __VERIFIER_nondet_int() ; [L1096] int tmp___6 = __VERIFIER_nondet_int() ; [L1097] int tmp___7 = __VERIFIER_nondet_int() ; [L1098] int tmp___8 = __VERIFIER_nondet_int() ; [L1099] long tmp___9 = __VERIFIER_nondet_long() ; [L1100] int blastFlag ; [L1103] blastFlag = 0 [L1104] s->hit=__VERIFIER_nondet_int () [L1105] s->state = 12292 [L1106] tmp = __VERIFIER_nondet_int() [L1107] cb = (void (*)())((void *)0) [L1108] ret = -1 [L1109] skip = 0 [L1110] EXPR s->info_callback VAL [init=1, SSLv3_client_data={5:0}] [L1110] COND TRUE (unsigned long )s->info_callback != (unsigned long )((void *)0) [L1111] EXPR s->info_callback [L1111] cb = s->info_callback [L1119] EXPR s->in_handshake [L1119] s->in_handshake += 1 [L1120] COND FALSE !(tmp___1 & 12288) VAL [init=1, SSLv3_client_data={5:0}] [L1130] COND TRUE 1 VAL [init=1, SSLv3_client_data={5:0}] [L1132] EXPR s->state [L1132] state = s->state [L1133] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1133] COND TRUE s->state == 12292 [L1236] s->new_session = 1 [L1237] s->state = 4096 [L1238] EXPR s->ctx [L1238] EXPR (s->ctx)->stats.sess_connect_renegotiate [L1238] (s->ctx)->stats.sess_connect_renegotiate += 1 [L1243] s->server = 0 VAL [init=1, SSLv3_client_data={5:0}] [L1244] COND TRUE (unsigned long )cb != (unsigned long )((void *)0) VAL [init=1, SSLv3_client_data={5:0}] [L1249] EXPR s->version VAL [init=1, SSLv3_client_data={5:0}] [L1249] COND FALSE !((s->version & 65280) != 768) [L1255] s->type = 4096 [L1256] EXPR s->init_buf VAL [init=1, SSLv3_client_data={5:0}] [L1256] COND FALSE !((unsigned long )s->init_buf == (unsigned long )((void *)0)) [L1274] COND FALSE !(! tmp___4) VAL [init=1, SSLv3_client_data={5:0}] [L1280] COND FALSE !(! tmp___5) [L1286] s->state = 4368 [L1287] EXPR s->ctx [L1287] EXPR (s->ctx)->stats.sess_connect [L1287] (s->ctx)->stats.sess_connect += 1 [L1288] s->init_num = 0 VAL [init=1, SSLv3_client_data={5:0}] [L1602] EXPR s->s3 [L1602] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={5:0}] [L1602] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1631] skip = 0 VAL [init=1, SSLv3_client_data={5:0}] [L1130] COND TRUE 1 VAL [init=1, SSLv3_client_data={5:0}] [L1132] EXPR s->state [L1132] state = s->state [L1133] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1133] COND FALSE !(s->state == 12292) [L1136] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1136] COND FALSE !(s->state == 16384) [L1139] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1139] COND FALSE !(s->state == 4096) [L1142] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1142] COND FALSE !(s->state == 20480) [L1145] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1145] COND FALSE !(s->state == 4099) [L1148] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1148] COND TRUE s->state == 4368 [L1292] s->shutdown = 0 [L1293] ret = __VERIFIER_nondet_int() [L1294] COND TRUE blastFlag == 0 [L1295] blastFlag = 1 VAL [init=1, SSLv3_client_data={5:0}] [L1299] COND FALSE !(ret <= 0) [L1304] s->state = 4384 [L1305] s->init_num = 0 [L1306] EXPR s->bbio [L1306] EXPR s->wbio VAL [init=1, SSLv3_client_data={5:0}] [L1306] COND TRUE (unsigned long )s->bbio != (unsigned long )s->wbio [L1602] EXPR s->s3 [L1602] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={5:0}] [L1602] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1631] skip = 0 VAL [init=1, SSLv3_client_data={5:0}] [L1130] COND TRUE 1 VAL [init=1, SSLv3_client_data={5:0}] [L1132] EXPR s->state [L1132] state = s->state [L1133] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1133] COND FALSE !(s->state == 12292) [L1136] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1136] COND FALSE !(s->state == 16384) [L1139] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1139] COND FALSE !(s->state == 4096) [L1142] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1142] COND FALSE !(s->state == 20480) [L1145] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1145] COND FALSE !(s->state == 4099) [L1148] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1148] COND FALSE !(s->state == 4368) [L1151] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1151] COND FALSE !(s->state == 4369) [L1154] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1154] COND TRUE s->state == 4384 [L1314] ret = __VERIFIER_nondet_int() [L1315] COND TRUE blastFlag == 1 [L1316] blastFlag = 2 VAL [init=1, SSLv3_client_data={5:0}] [L1324] COND FALSE !(ret <= 0) [L1329] s->hit VAL [init=1, SSLv3_client_data={5:0}] [L1329] COND FALSE !(s->hit) [L1332] s->state = 4400 VAL [init=1, SSLv3_client_data={5:0}] [L1334] s->init_num = 0 VAL [init=1, SSLv3_client_data={5:0}] [L1602] EXPR s->s3 [L1602] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={5:0}] [L1602] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1631] skip = 0 VAL [init=1, SSLv3_client_data={5:0}] [L1130] COND TRUE 1 VAL [init=1, SSLv3_client_data={5:0}] [L1132] EXPR s->state [L1132] state = s->state [L1133] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1133] COND FALSE !(s->state == 12292) [L1136] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1136] COND FALSE !(s->state == 16384) [L1139] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1139] COND FALSE !(s->state == 4096) [L1142] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1142] COND FALSE !(s->state == 20480) [L1145] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1145] COND FALSE !(s->state == 4099) [L1148] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1148] COND FALSE !(s->state == 4368) [L1151] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1151] COND FALSE !(s->state == 4369) [L1154] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1154] COND FALSE !(s->state == 4384) [L1157] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1157] COND FALSE !(s->state == 4385) [L1160] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1160] COND TRUE s->state == 4400 [L1338] EXPR s->s3 [L1338] EXPR (s->s3)->tmp.new_cipher [L1338] EXPR ((s->s3)->tmp.new_cipher)->algorithms VAL [init=1, SSLv3_client_data={5:0}] [L1338] COND FALSE !(((s->s3)->tmp.new_cipher)->algorithms & 256UL) [L1341] ret = __VERIFIER_nondet_int() [L1342] COND TRUE blastFlag == 2 [L1343] blastFlag = 3 VAL [init=1, SSLv3_client_data={5:0}] [L1347] COND FALSE !(ret <= 0) VAL [init=1, SSLv3_client_data={5:0}] [L1353] s->state = 4416 [L1354] s->init_num = 0 VAL [init=1, SSLv3_client_data={5:0}] [L1602] EXPR s->s3 [L1602] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={5:0}] [L1602] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1631] skip = 0 VAL [init=1, SSLv3_client_data={5:0}] [L1130] COND TRUE 1 VAL [init=1, SSLv3_client_data={5:0}] [L1132] EXPR s->state [L1132] state = s->state [L1133] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1133] COND FALSE !(s->state == 12292) [L1136] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1136] COND FALSE !(s->state == 16384) [L1139] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1139] COND FALSE !(s->state == 4096) [L1142] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1142] COND FALSE !(s->state == 20480) [L1145] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1145] COND FALSE !(s->state == 4099) [L1148] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1148] COND FALSE !(s->state == 4368) [L1151] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1151] COND FALSE !(s->state == 4369) [L1154] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1154] COND FALSE !(s->state == 4384) [L1157] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1157] COND FALSE !(s->state == 4385) [L1160] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1160] COND FALSE !(s->state == 4400) [L1163] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1163] COND FALSE !(s->state == 4401) [L1166] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1166] COND TRUE s->state == 4416 [L1358] ret = __VERIFIER_nondet_int() [L1359] COND TRUE blastFlag == 3 [L1360] blastFlag = 4 VAL [init=1, SSLv3_client_data={5:0}] [L1364] COND FALSE !(ret <= 0) [L1369] s->state = 4432 [L1370] s->init_num = 0 VAL [init=1, SSLv3_client_data={5:0}] [L1371] COND FALSE !(! tmp___6) VAL [init=1, SSLv3_client_data={5:0}] [L1602] EXPR s->s3 [L1602] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={5:0}] [L1602] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1631] skip = 0 VAL [init=1, SSLv3_client_data={5:0}] [L1130] COND TRUE 1 VAL [init=1, SSLv3_client_data={5:0}] [L1132] EXPR s->state [L1132] state = s->state [L1133] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1133] COND FALSE !(s->state == 12292) [L1136] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1136] COND FALSE !(s->state == 16384) [L1139] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1139] COND FALSE !(s->state == 4096) [L1142] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1142] COND FALSE !(s->state == 20480) [L1145] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1145] COND FALSE !(s->state == 4099) [L1148] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1148] COND FALSE !(s->state == 4368) [L1151] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1151] COND FALSE !(s->state == 4369) [L1154] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1154] COND FALSE !(s->state == 4384) [L1157] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1157] COND FALSE !(s->state == 4385) [L1160] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1160] COND FALSE !(s->state == 4400) [L1163] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1163] COND FALSE !(s->state == 4401) [L1166] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1166] COND FALSE !(s->state == 4416) [L1169] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1169] COND FALSE !(s->state == 4417) [L1172] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1172] COND TRUE s->state == 4432 [L1380] ret = __VERIFIER_nondet_int() [L1381] COND TRUE blastFlag == 4 VAL [init=1, SSLv3_client_data={5:0}] [L3] __assert_fail("0", "s3_clnt.blast.03.i.cil-1.c", 3, "reach_error") VAL [init=1, SSLv3_client_data={5:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 130 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 18.7s, OverallIterations: 24, TraceHistogramMax: 6, AutomataDifference: 14.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5055 SDtfs, 1779 SDslu, 6314 SDs, 0 SdLazy, 3604 SolverSat, 135 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 126 GetRequests, 46 SyntacticMatches, 19 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=704occurred in iteration=23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 23 MinimizatonAttempts, 1525 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 1918 NumberOfCodeBlocks, 1918 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 1783 ConstructedInterpolants, 0 QuantifiedInterpolants, 373356 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 23 InterpolantComputations, 23 PerfectInterpolantSequences, 1532/1532 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 19:59:33,547 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-11-29 19:59:33,741 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:59:33,742 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:59:33,745 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:59:33,746 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:59:33,747 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:59:33,748 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:59:33,749 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:59:33,749 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:59:33,750 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:59:33,752 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:59:33,753 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:59:33,754 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_125555a5-f25c-4937-8820-9e35c7878d61/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-29 19:59:33,809 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:59:33,809 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:59:33,812 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:59:33,813 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:59:33,814 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:59:33,814 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:59:33,814 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 19:59:33,815 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 19:59:33,815 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:59:33,815 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 19:59:33,817 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 19:59:33,817 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 19:59:33,818 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-29 19:59:33,818 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-29 19:59:33,818 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 19:59:33,819 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:59:33,819 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:59:33,819 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 19:59:33,820 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:59:33,820 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:59:33,821 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 19:59:33,821 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 19:59:33,821 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:59:33,822 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:59:33,822 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 19:59:33,822 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 19:59:33,823 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-29 19:59:33,823 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-29 19:59:33,823 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 19:59:33,824 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:59:33,824 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-29 19:59:33,824 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_125555a5-f25c-4937-8820-9e35c7878d61/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_125555a5-f25c-4937-8820-9e35c7878d61/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8334dcb0cdaf6693a0e55f9663f2e64fc956eb05 [2020-11-29 19:59:34,276 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:59:34,309 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:59:34,313 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:59:34,315 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:59:34,320 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:59:34,322 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_125555a5-f25c-4937-8820-9e35c7878d61/bin/uautomizer/../../sv-benchmarks/c/openssl/s3_clnt.blast.03.i.cil-1.c [2020-11-29 19:59:34,410 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_125555a5-f25c-4937-8820-9e35c7878d61/bin/uautomizer/data/ef7dd8713/9da8d348d3484fe9a093cd34b98a4766/FLAG1e639732c [2020-11-29 19:59:35,248 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:59:35,249 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_125555a5-f25c-4937-8820-9e35c7878d61/sv-benchmarks/c/openssl/s3_clnt.blast.03.i.cil-1.c [2020-11-29 19:59:35,282 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_125555a5-f25c-4937-8820-9e35c7878d61/bin/uautomizer/data/ef7dd8713/9da8d348d3484fe9a093cd34b98a4766/FLAG1e639732c [2020-11-29 19:59:35,465 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_125555a5-f25c-4937-8820-9e35c7878d61/bin/uautomizer/data/ef7dd8713/9da8d348d3484fe9a093cd34b98a4766 [2020-11-29 19:59:35,468 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:59:35,471 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:59:35,476 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:59:35,476 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:59:35,480 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:59:35,482 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:59:35" (1/1) ... [2020-11-29 19:59:35,490 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61137b00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:59:35, skipping insertion in model container [2020-11-29 19:59:35,490 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:59:35" (1/1) ... [2020-11-29 19:59:35,500 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:59:35,601 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:59:36,384 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:59:36,421 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:59:36,633 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:59:36,670 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:59:36,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:59:36 WrapperNode [2020-11-29 19:59:36,670 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:59:36,672 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:59:36,672 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:59:36,674 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:59:36,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:59:36" (1/1) ... [2020-11-29 19:59:36,750 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:59:36" (1/1) ... [2020-11-29 19:59:36,823 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:59:36,824 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:59:36,824 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:59:36,824 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:59:36,835 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:59:36" (1/1) ... [2020-11-29 19:59:36,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:59:36" (1/1) ... [2020-11-29 19:59:36,858 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:59:36" (1/1) ... [2020-11-29 19:59:36,858 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:59:36" (1/1) ... [2020-11-29 19:59:36,931 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:59:36" (1/1) ... [2020-11-29 19:59:36,958 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:59:36" (1/1) ... [2020-11-29 19:59:36,963 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:59:36" (1/1) ... [2020-11-29 19:59:36,969 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:59:36,971 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:59:36,971 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:59:36,971 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:59:36,983 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:59:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_125555a5-f25c-4937-8820-9e35c7878d61/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 19:59:37,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-29 19:59:37,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-29 19:59:37,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 19:59:37,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-29 19:59:37,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-29 19:59:37,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-29 19:59:37,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:59:37,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:59:37,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-29 19:59:37,366 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-11-29 19:59:40,343 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2020-11-29 19:59:40,343 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2020-11-29 19:59:40,354 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:59:40,355 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-29 19:59:40,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:59:40 BoogieIcfgContainer [2020-11-29 19:59:40,357 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:59:40,359 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 19:59:40,360 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 19:59:40,363 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 19:59:40,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:59:35" (1/3) ... [2020-11-29 19:59:40,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23ff7973 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:59:40, skipping insertion in model container [2020-11-29 19:59:40,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:59:36" (2/3) ... [2020-11-29 19:59:40,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23ff7973 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:59:40, skipping insertion in model container [2020-11-29 19:59:40,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:59:40" (3/3) ... [2020-11-29 19:59:40,367 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt.blast.03.i.cil-1.c [2020-11-29 19:59:40,381 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 19:59:40,386 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 19:59:40,401 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 19:59:40,429 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 19:59:40,429 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 19:59:40,430 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 19:59:40,430 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:59:40,430 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:59:40,430 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 19:59:40,430 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:59:40,431 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 19:59:40,449 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states. [2020-11-29 19:59:40,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-29 19:59:40,456 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:59:40,457 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:59:40,457 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:59:40,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:59:40,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1457695037, now seen corresponding path program 1 times [2020-11-29 19:59:40,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 19:59:40,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [865065788] [2020-11-29 19:59:40,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_125555a5-f25c-4937-8820-9e35c7878d61/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 19:59:40,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:59:40,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 19:59:40,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:59:40,786 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 19:59:40,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 19:59:40,805 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 19:59:40,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [865065788] [2020-11-29 19:59:40,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:59:40,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-29 19:59:40,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693547260] [2020-11-29 19:59:40,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:59:40,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 19:59:40,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:59:40,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:59:40,831 INFO L87 Difference]: Start difference. First operand 130 states. Second operand 4 states. [2020-11-29 19:59:41,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:59:41,015 INFO L93 Difference]: Finished difference Result 486 states and 821 transitions. [2020-11-29 19:59:41,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:59:41,022 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-11-29 19:59:41,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:59:41,046 INFO L225 Difference]: With dead ends: 486 [2020-11-29 19:59:41,047 INFO L226 Difference]: Without dead ends: 312 [2020-11-29 19:59:41,051 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 44 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 19:59:41,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-11-29 19:59:41,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2020-11-29 19:59:41,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2020-11-29 19:59:41,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 467 transitions. [2020-11-29 19:59:41,171 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 467 transitions. Word has length 24 [2020-11-29 19:59:41,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:59:41,171 INFO L481 AbstractCegarLoop]: Abstraction has 312 states and 467 transitions. [2020-11-29 19:59:41,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:59:41,172 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 467 transitions. [2020-11-29 19:59:41,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-11-29 19:59:41,183 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:59:41,183 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-11-29 19:59:41,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-29 19:59:41,409 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:59:41,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:59:41,410 INFO L82 PathProgramCache]: Analyzing trace with hash -1854239308, now seen corresponding path program 1 times [2020-11-29 19:59:41,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 19:59:41,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1353902717] [2020-11-29 19:59:41,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_125555a5-f25c-4937-8820-9e35c7878d61/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 19:59:41,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:59:41,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 19:59:41,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:59:41,732 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:59:41,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 19:59:41,763 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:59:41,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1353902717] [2020-11-29 19:59:41,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:59:41,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-29 19:59:41,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146914613] [2020-11-29 19:59:41,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:59:41,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 19:59:41,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:59:41,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:59:41,769 INFO L87 Difference]: Start difference. First operand 312 states and 467 transitions. Second operand 4 states. [2020-11-29 19:59:43,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:59:43,936 INFO L93 Difference]: Finished difference Result 716 states and 1078 transitions. [2020-11-29 19:59:43,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:59:43,938 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-11-29 19:59:43,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:59:43,942 INFO L225 Difference]: With dead ends: 716 [2020-11-29 19:59:43,943 INFO L226 Difference]: Without dead ends: 512 [2020-11-29 19:59:43,945 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 116 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 19:59:43,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2020-11-29 19:59:44,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 512. [2020-11-29 19:59:44,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 512 states. [2020-11-29 19:59:44,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 764 transitions. [2020-11-29 19:59:44,008 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 764 transitions. Word has length 60 [2020-11-29 19:59:44,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:59:44,009 INFO L481 AbstractCegarLoop]: Abstraction has 512 states and 764 transitions. [2020-11-29 19:59:44,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:59:44,009 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 764 transitions. [2020-11-29 19:59:44,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-11-29 19:59:44,015 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:59:44,015 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:59:44,228 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-29 19:59:44,229 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:59:44,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:59:44,230 INFO L82 PathProgramCache]: Analyzing trace with hash 922615118, now seen corresponding path program 1 times [2020-11-29 19:59:44,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 19:59:44,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1815522099] [2020-11-29 19:59:44,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_125555a5-f25c-4937-8820-9e35c7878d61/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 19:59:44,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:59:44,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 19:59:44,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:00:21,744 WARN L193 SmtUtils]: Spent 36.96 s on a formula simplification. DAG size of input: 54 DAG size of output: 41 [2020-11-29 20:00:21,746 INFO L350 Elim1Store]: treesize reduction 122, result has 48.5 percent of original size [2020-11-29 20:00:21,746 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 124 [2020-11-29 20:00:21,748 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 20:00:54,292 WARN L193 SmtUtils]: Spent 32.54 s on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2020-11-29 20:00:54,293 INFO L625 ElimStorePlain]: treesize reduction 18, result has 85.5 percent of original size [2020-11-29 20:00:54,322 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-11-29 20:00:54,330 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:00:54,333 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-11-29 20:00:54,347 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 20:00:54,351 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 20:00:54,357 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-11-29 20:00:54,380 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:00:54,381 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-11-29 20:00:54,386 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-11-29 20:00:54,394 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-11-29 20:00:54,397 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:00:54,398 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-11-29 20:00:54,404 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 20:00:54,411 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 20:00:54,426 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-11-29 20:00:54,446 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:00:54,447 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-11-29 20:00:54,460 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-11-29 20:00:54,466 INFO L545 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-11-29 20:00:54,468 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:44, output treesize:83 [2020-11-29 20:00:54,472 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-11-29 20:00:54,473 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:00:54,475 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-11-29 20:00:54,480 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 20:00:54,486 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 20:00:54,489 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-11-29 20:00:54,502 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:00:54,503 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-11-29 20:00:54,507 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-11-29 20:00:54,601 INFO L350 Elim1Store]: treesize reduction 41, result has 18.0 percent of original size [2020-11-29 20:00:54,601 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 24 [2020-11-29 20:00:54,603 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 20:00:54,608 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 20:00:54,608 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 20:00:54,609 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:31, output treesize:9 [2020-11-29 20:00:54,622 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-11-29 20:00:54,622 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 20:00:54,625 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 20:00:54,625 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 20:00:54,625 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-11-29 20:00:54,661 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2020-11-29 20:00:54,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 20:00:54,703 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2020-11-29 20:00:54,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1815522099] [2020-11-29 20:00:54,704 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:00:54,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-11-29 20:00:54,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815374927] [2020-11-29 20:00:54,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:00:54,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 20:00:54,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:00:54,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:00:54,713 INFO L87 Difference]: Start difference. First operand 512 states and 764 transitions. Second operand 4 states. [2020-11-29 20:00:56,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:00:56,929 INFO L93 Difference]: Finished difference Result 1021 states and 1522 transitions. [2020-11-29 20:00:56,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:00:56,931 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2020-11-29 20:00:56,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:00:56,936 INFO L225 Difference]: With dead ends: 1021 [2020-11-29 20:00:56,936 INFO L226 Difference]: Without dead ends: 516 [2020-11-29 20:00:56,942 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 190 SyntacticMatches, 2 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 20:00:56,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2020-11-29 20:00:56,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 515. [2020-11-29 20:00:56,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 515 states. [2020-11-29 20:00:56,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 767 transitions. [2020-11-29 20:00:56,969 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 767 transitions. Word has length 98 [2020-11-29 20:00:56,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:00:56,970 INFO L481 AbstractCegarLoop]: Abstraction has 515 states and 767 transitions. [2020-11-29 20:00:56,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:00:56,970 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 767 transitions. [2020-11-29 20:00:56,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-11-29 20:00:56,974 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:00:56,975 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:00:57,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-29 20:00:57,192 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:00:57,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:00:57,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1354155866, now seen corresponding path program 1 times [2020-11-29 20:00:57,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 20:00:57,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2111065176] [2020-11-29 20:00:57,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_125555a5-f25c-4937-8820-9e35c7878d61/bin/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-29 20:00:57,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:00:57,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 20:00:57,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:00:57,738 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-11-29 20:00:57,739 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 20:00:57,746 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 20:00:57,746 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 20:00:57,746 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2020-11-29 20:00:57,788 INFO L350 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2020-11-29 20:00:57,789 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2020-11-29 20:00:57,790 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 20:00:57,806 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 20:00:57,806 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 20:00:57,806 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2020-11-29 20:00:57,850 INFO L350 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2020-11-29 20:00:57,850 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 10 [2020-11-29 20:00:57,852 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 20:00:57,855 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 20:00:57,855 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 20:00:57,855 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:3 [2020-11-29 20:00:57,905 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-11-29 20:00:57,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 20:00:57,994 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-11-29 20:00:57,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2111065176] [2020-11-29 20:00:57,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:00:57,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2020-11-29 20:00:57,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083072677] [2020-11-29 20:00:57,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 20:00:57,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 20:00:58,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 20:00:58,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-29 20:00:58,001 INFO L87 Difference]: Start difference. First operand 515 states and 767 transitions. Second operand 7 states. [2020-11-29 20:01:05,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:01:05,878 INFO L93 Difference]: Finished difference Result 1748 states and 2616 transitions. [2020-11-29 20:01:05,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 20:01:05,880 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 112 [2020-11-29 20:01:05,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:01:05,893 INFO L225 Difference]: With dead ends: 1748 [2020-11-29 20:01:05,893 INFO L226 Difference]: Without dead ends: 1243 [2020-11-29 20:01:05,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 216 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-29 20:01:05,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1243 states. [2020-11-29 20:01:05,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1243 to 618. [2020-11-29 20:01:05,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 618 states. [2020-11-29 20:01:05,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 940 transitions. [2020-11-29 20:01:05,951 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 940 transitions. Word has length 112 [2020-11-29 20:01:05,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:01:05,951 INFO L481 AbstractCegarLoop]: Abstraction has 618 states and 940 transitions. [2020-11-29 20:01:05,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 20:01:05,954 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 940 transitions. [2020-11-29 20:01:05,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-11-29 20:01:05,966 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:01:05,967 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:01:06,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-29 20:01:06,183 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:01:06,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:01:06,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1254631592, now seen corresponding path program 1 times [2020-11-29 20:01:06,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 20:01:06,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [814259825] [2020-11-29 20:01:06,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_125555a5-f25c-4937-8820-9e35c7878d61/bin/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-11-29 20:01:06,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:01:06,786 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:01:07,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:01:07,349 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:01:07,785 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-29 20:01:07,786 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 20:01:08,000 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-29 20:01:08,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 08:01:08 BoogieIcfgContainer [2020-11-29 20:01:08,232 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 20:01:08,234 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:01:08,234 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:01:08,234 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:01:08,235 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:59:40" (3/4) ... [2020-11-29 20:01:08,239 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 20:01:08,422 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_125555a5-f25c-4937-8820-9e35c7878d61/bin/uautomizer/witness.graphml [2020-11-29 20:01:08,422 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:01:08,423 INFO L168 Benchmark]: Toolchain (without parser) took 92951.92 ms. Allocated memory was 50.3 MB in the beginning and 123.7 MB in the end (delta: 73.4 MB). Free memory was 26.6 MB in the beginning and 51.2 MB in the end (delta: -24.6 MB). Peak memory consumption was 49.6 MB. Max. memory is 16.1 GB. [2020-11-29 20:01:08,424 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 50.3 MB. Free memory was 33.4 MB in the beginning and 33.4 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:01:08,424 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1195.18 ms. Allocated memory was 50.3 MB in the beginning and 71.3 MB in the end (delta: 21.0 MB). Free memory was 26.4 MB in the beginning and 37.4 MB in the end (delta: -11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 20:01:08,425 INFO L168 Benchmark]: Boogie Procedure Inliner took 151.36 ms. Allocated memory is still 71.3 MB. Free memory was 37.4 MB in the beginning and 50.6 MB in the end (delta: -13.3 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. [2020-11-29 20:01:08,425 INFO L168 Benchmark]: Boogie Preprocessor took 145.84 ms. Allocated memory is still 71.3 MB. Free memory was 50.6 MB in the beginning and 44.0 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-29 20:01:08,426 INFO L168 Benchmark]: RCFGBuilder took 3386.70 ms. Allocated memory was 71.3 MB in the beginning and 100.7 MB in the end (delta: 29.4 MB). Free memory was 44.0 MB in the beginning and 58.9 MB in the end (delta: -14.9 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. [2020-11-29 20:01:08,426 INFO L168 Benchmark]: TraceAbstraction took 87872.78 ms. Allocated memory was 100.7 MB in the beginning and 123.7 MB in the end (delta: 23.1 MB). Free memory was 58.9 MB in the beginning and 65.8 MB in the end (delta: -6.9 MB). Peak memory consumption was 53.5 MB. Max. memory is 16.1 GB. [2020-11-29 20:01:08,427 INFO L168 Benchmark]: Witness Printer took 188.17 ms. Allocated memory is still 123.7 MB. Free memory was 65.8 MB in the beginning and 51.2 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-29 20:01:08,431 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 50.3 MB. Free memory was 33.4 MB in the beginning and 33.4 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1195.18 ms. Allocated memory was 50.3 MB in the beginning and 71.3 MB in the end (delta: 21.0 MB). Free memory was 26.4 MB in the beginning and 37.4 MB in the end (delta: -11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 151.36 ms. Allocated memory is still 71.3 MB. Free memory was 37.4 MB in the beginning and 50.6 MB in the end (delta: -13.3 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 145.84 ms. Allocated memory is still 71.3 MB. Free memory was 50.6 MB in the beginning and 44.0 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 3386.70 ms. Allocated memory was 71.3 MB in the beginning and 100.7 MB in the end (delta: 29.4 MB). Free memory was 44.0 MB in the beginning and 58.9 MB in the end (delta: -14.9 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 87872.78 ms. Allocated memory was 100.7 MB in the beginning and 123.7 MB in the end (delta: 23.1 MB). Free memory was 58.9 MB in the beginning and 65.8 MB in the end (delta: -6.9 MB). Peak memory consumption was 53.5 MB. Max. memory is 16.1 GB. * Witness Printer took 188.17 ms. Allocated memory is still 123.7 MB. Free memory was 65.8 MB in the beginning and 51.2 MB in the end (delta: 14.7 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_client_data ; VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1067] SSL *s = (SSL*)malloc(sizeof(SSL)) ; [L1071] s->s3 = malloc(sizeof(struct ssl3_state_st)) [L1072] s->ctx = malloc(sizeof(SSL_CTX)) [L1073] s->session = malloc(sizeof(SSL_SESSION)) [L1074] s->state = 12292 [L1075] s->version = __VERIFIER_nondet_int() [L1082] BUF_MEM *buf ; [L1083] unsigned long tmp ; [L1084] unsigned long l ; [L1085] long num1 ; [L1086] void (*cb)() ; [L1087] int ret ; [L1088] int new_state ; [L1089] int state ; [L1090] int skip ; [L1091] int tmp___1 = __VERIFIER_nondet_int() ; [L1092] int tmp___2 = __VERIFIER_nondet_int() ; [L1093] int tmp___3 = __VERIFIER_nondet_int() ; [L1094] int tmp___4 = __VERIFIER_nondet_int() ; [L1095] int tmp___5 = __VERIFIER_nondet_int() ; [L1096] int tmp___6 = __VERIFIER_nondet_int() ; [L1097] int tmp___7 = __VERIFIER_nondet_int() ; [L1098] int tmp___8 = __VERIFIER_nondet_int() ; [L1099] long tmp___9 = __VERIFIER_nondet_long() ; [L1100] int blastFlag ; [L1103] blastFlag = 0 [L1104] s->hit=__VERIFIER_nondet_int () [L1105] s->state = 12292 [L1106] tmp = __VERIFIER_nondet_int() [L1107] cb = (void (*)())((void *)0) [L1108] ret = -1 [L1109] skip = 0 [L1110] EXPR s->info_callback VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1110] COND TRUE (unsigned long )s->info_callback != (unsigned long )((void *)0) [L1111] EXPR s->info_callback [L1111] cb = s->info_callback [L1119] EXPR s->in_handshake [L1119] s->in_handshake += 1 [L1120] COND FALSE !(tmp___1 & 12288) VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1130] COND TRUE 1 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1132] EXPR s->state [L1132] state = s->state [L1133] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1133] COND TRUE s->state == 12292 [L1236] s->new_session = 1 [L1237] s->state = 4096 [L1238] EXPR s->ctx [L1238] EXPR (s->ctx)->stats.sess_connect_renegotiate [L1238] (s->ctx)->stats.sess_connect_renegotiate += 1 [L1243] s->server = 0 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1244] COND TRUE (unsigned long )cb != (unsigned long )((void *)0) VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1249] EXPR s->version VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1249] COND FALSE !((s->version & 65280) != 768) [L1255] s->type = 4096 [L1256] EXPR s->init_buf VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1256] COND FALSE !((unsigned long )s->init_buf == (unsigned long )((void *)0)) [L1274] COND FALSE !(! tmp___4) VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1280] COND FALSE !(! tmp___5) [L1286] s->state = 4368 [L1287] EXPR s->ctx [L1287] EXPR (s->ctx)->stats.sess_connect [L1287] (s->ctx)->stats.sess_connect += 1 [L1288] s->init_num = 0 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1602] EXPR s->s3 [L1602] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1602] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1631] skip = 0 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1130] COND TRUE 1 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1132] EXPR s->state [L1132] state = s->state [L1133] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1133] COND FALSE !(s->state == 12292) [L1136] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1136] COND FALSE !(s->state == 16384) [L1139] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1139] COND FALSE !(s->state == 4096) [L1142] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1142] COND FALSE !(s->state == 20480) [L1145] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1145] COND FALSE !(s->state == 4099) [L1148] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1148] COND TRUE s->state == 4368 [L1292] s->shutdown = 0 [L1293] ret = __VERIFIER_nondet_int() [L1294] COND TRUE blastFlag == 0 [L1295] blastFlag = 1 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1299] COND FALSE !(ret <= 0) [L1304] s->state = 4384 [L1305] s->init_num = 0 [L1306] EXPR s->bbio [L1306] EXPR s->wbio VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1306] COND TRUE (unsigned long )s->bbio != (unsigned long )s->wbio [L1602] EXPR s->s3 [L1602] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1602] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1631] skip = 0 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1130] COND TRUE 1 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1132] EXPR s->state [L1132] state = s->state [L1133] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1133] COND FALSE !(s->state == 12292) [L1136] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1136] COND FALSE !(s->state == 16384) [L1139] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1139] COND FALSE !(s->state == 4096) [L1142] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1142] COND FALSE !(s->state == 20480) [L1145] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1145] COND FALSE !(s->state == 4099) [L1148] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1148] COND FALSE !(s->state == 4368) [L1151] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1151] COND FALSE !(s->state == 4369) [L1154] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1154] COND TRUE s->state == 4384 [L1314] ret = __VERIFIER_nondet_int() [L1315] COND TRUE blastFlag == 1 [L1316] blastFlag = 2 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1324] COND FALSE !(ret <= 0) [L1329] s->hit VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1329] COND FALSE !(s->hit) [L1332] s->state = 4400 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1334] s->init_num = 0 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1602] EXPR s->s3 [L1602] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1602] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1631] skip = 0 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1130] COND TRUE 1 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1132] EXPR s->state [L1132] state = s->state [L1133] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1133] COND FALSE !(s->state == 12292) [L1136] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1136] COND FALSE !(s->state == 16384) [L1139] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1139] COND FALSE !(s->state == 4096) [L1142] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1142] COND FALSE !(s->state == 20480) [L1145] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1145] COND FALSE !(s->state == 4099) [L1148] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1148] COND FALSE !(s->state == 4368) [L1151] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1151] COND FALSE !(s->state == 4369) [L1154] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1154] COND FALSE !(s->state == 4384) [L1157] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1157] COND FALSE !(s->state == 4385) [L1160] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1160] COND TRUE s->state == 4400 [L1338] EXPR s->s3 [L1338] EXPR (s->s3)->tmp.new_cipher [L1338] EXPR ((s->s3)->tmp.new_cipher)->algorithms VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1338] COND FALSE !(((s->s3)->tmp.new_cipher)->algorithms & 256UL) [L1341] ret = __VERIFIER_nondet_int() [L1342] COND TRUE blastFlag == 2 [L1343] blastFlag = 3 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1347] COND FALSE !(ret <= 0) VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1353] s->state = 4416 [L1354] s->init_num = 0 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1602] EXPR s->s3 [L1602] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1602] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1631] skip = 0 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1130] COND TRUE 1 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1132] EXPR s->state [L1132] state = s->state [L1133] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1133] COND FALSE !(s->state == 12292) [L1136] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1136] COND FALSE !(s->state == 16384) [L1139] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1139] COND FALSE !(s->state == 4096) [L1142] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1142] COND FALSE !(s->state == 20480) [L1145] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1145] COND FALSE !(s->state == 4099) [L1148] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1148] COND FALSE !(s->state == 4368) [L1151] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1151] COND FALSE !(s->state == 4369) [L1154] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1154] COND FALSE !(s->state == 4384) [L1157] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1157] COND FALSE !(s->state == 4385) [L1160] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1160] COND FALSE !(s->state == 4400) [L1163] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1163] COND FALSE !(s->state == 4401) [L1166] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1166] COND TRUE s->state == 4416 [L1358] ret = __VERIFIER_nondet_int() [L1359] COND TRUE blastFlag == 3 [L1360] blastFlag = 4 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1364] COND FALSE !(ret <= 0) [L1369] s->state = 4432 [L1370] s->init_num = 0 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1371] COND FALSE !(! tmp___6) VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1602] EXPR s->s3 [L1602] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1602] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1631] skip = 0 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1130] COND TRUE 1 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1132] EXPR s->state [L1132] state = s->state [L1133] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1133] COND FALSE !(s->state == 12292) [L1136] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1136] COND FALSE !(s->state == 16384) [L1139] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1139] COND FALSE !(s->state == 4096) [L1142] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1142] COND FALSE !(s->state == 20480) [L1145] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1145] COND FALSE !(s->state == 4099) [L1148] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1148] COND FALSE !(s->state == 4368) [L1151] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1151] COND FALSE !(s->state == 4369) [L1154] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1154] COND FALSE !(s->state == 4384) [L1157] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1157] COND FALSE !(s->state == 4385) [L1160] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1160] COND FALSE !(s->state == 4400) [L1163] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1163] COND FALSE !(s->state == 4401) [L1166] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1166] COND FALSE !(s->state == 4416) [L1169] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1169] COND FALSE !(s->state == 4417) [L1172] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1172] COND TRUE s->state == 4432 [L1380] ret = __VERIFIER_nondet_int() [L1381] COND TRUE blastFlag == 4 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L3] __assert_fail("0", "s3_clnt.blast.03.i.cil-1.c", 3, "reach_error") VAL [init=1, SSLv3_client_data={-2147483617:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 130 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 87.5s, OverallIterations: 5, TraceHistogramMax: 6, AutomataDifference: 12.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 823 SDtfs, 1037 SDslu, 1322 SDs, 0 SdLazy, 696 SolverSat, 84 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 11.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 583 GetRequests, 566 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=618occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 626 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 70.5s InterpolantComputationTime, 406 NumberOfCodeBlocks, 406 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 580 ConstructedInterpolants, 0 QuantifiedInterpolants, 113470 SizeOfPredicates, 9 NumberOfNonLiveVariables, 870 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 592/592 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...