./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl-simplified/s3_srvr_12.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2289f88-987b-4263-8a52-ba126d108242/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2289f88-987b-4263-8a52-ba126d108242/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2289f88-987b-4263-8a52-ba126d108242/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2289f88-987b-4263-8a52-ba126d108242/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/openssl-simplified/s3_srvr_12.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2289f88-987b-4263-8a52-ba126d108242/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2289f88-987b-4263-8a52-ba126d108242/bin/uautomizer-j4sWxH34Be --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 f62de5d75db0b2d49331dba44cec50cdc6b7f3c7cb3085015df6ef978c04ff42 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 0.2.1-dev-e943c26 [2021-10-21 20:15:05,276 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:15:05,279 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:15:05,317 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:15:05,318 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:15:05,320 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:15:05,322 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:15:05,325 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:15:05,328 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:15:05,330 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:15:05,332 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:15:05,334 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:15:05,334 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:15:05,336 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:15:05,339 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:15:05,341 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:15:05,342 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:15:05,343 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:15:05,346 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:15:05,349 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:15:05,351 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:15:05,354 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:15:05,356 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:15:05,357 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:15:05,362 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:15:05,362 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:15:05,363 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:15:05,364 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:15:05,365 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:15:05,367 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:15:05,367 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:15:05,369 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:15:05,370 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:15:05,372 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:15:05,373 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:15:05,374 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:15:05,375 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:15:05,375 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:15:05,375 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:15:05,377 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:15:05,378 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:15:05,379 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2289f88-987b-4263-8a52-ba126d108242/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 20:15:05,411 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:15:05,412 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:15:05,412 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:15:05,412 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:15:05,414 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:15:05,414 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:15:05,414 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:15:05,415 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:15:05,415 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:15:05,415 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 20:15:05,416 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:15:05,416 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:15:05,416 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 20:15:05,416 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 20:15:05,417 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 20:15:05,417 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:15:05,417 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 20:15:05,417 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:15:05,418 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 20:15:05,418 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:15:05,418 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:15:05,418 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 20:15:05,419 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:15:05,419 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:15:05,419 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 20:15:05,420 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 20:15:05,420 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 20:15:05,420 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 20:15:05,420 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 20:15:05,421 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 20:15:05,421 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 20:15:05,421 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:15:05,421 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_worker_vcloud-master_on_vcloud-master/run_dir_b2289f88-987b-4263-8a52-ba126d108242/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2289f88-987b-4263-8a52-ba126d108242/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f62de5d75db0b2d49331dba44cec50cdc6b7f3c7cb3085015df6ef978c04ff42 [2021-10-21 20:15:05,725 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:15:05,753 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:15:05,756 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:15:05,758 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:15:05,759 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:15:05,760 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2289f88-987b-4263-8a52-ba126d108242/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/openssl-simplified/s3_srvr_12.cil.c [2021-10-21 20:15:05,864 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2289f88-987b-4263-8a52-ba126d108242/bin/uautomizer-j4sWxH34Be/data/dda58b95f/e4f1cdf493d54239a7b0b7b3af83787f/FLAG8d55dbd11 [2021-10-21 20:15:06,648 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:15:06,649 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2289f88-987b-4263-8a52-ba126d108242/sv-benchmarks/c/openssl-simplified/s3_srvr_12.cil.c [2021-10-21 20:15:06,689 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2289f88-987b-4263-8a52-ba126d108242/bin/uautomizer-j4sWxH34Be/data/dda58b95f/e4f1cdf493d54239a7b0b7b3af83787f/FLAG8d55dbd11 [2021-10-21 20:15:06,929 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2289f88-987b-4263-8a52-ba126d108242/bin/uautomizer-j4sWxH34Be/data/dda58b95f/e4f1cdf493d54239a7b0b7b3af83787f [2021-10-21 20:15:06,933 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:15:06,935 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 20:15:06,937 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:15:06,937 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:15:06,956 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:15:06,957 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:15:06" (1/1) ... [2021-10-21 20:15:06,958 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cddaced and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:15:06, skipping insertion in model container [2021-10-21 20:15:06,958 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:15:06" (1/1) ... [2021-10-21 20:15:06,966 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:15:07,021 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:15:07,343 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2289f88-987b-4263-8a52-ba126d108242/sv-benchmarks/c/openssl-simplified/s3_srvr_12.cil.c[49672,49685] [2021-10-21 20:15:07,354 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:15:07,365 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:15:07,450 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2289f88-987b-4263-8a52-ba126d108242/sv-benchmarks/c/openssl-simplified/s3_srvr_12.cil.c[49672,49685] [2021-10-21 20:15:07,455 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:15:07,483 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:15:07,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:15:07 WrapperNode [2021-10-21 20:15:07,484 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:15:07,486 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 20:15:07,486 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 20:15:07,486 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 20:15:07,496 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:15:07" (1/1) ... [2021-10-21 20:15:07,511 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:15:07" (1/1) ... [2021-10-21 20:15:07,567 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 20:15:07,568 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:15:07,568 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:15:07,568 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:15:07,579 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:15:07" (1/1) ... [2021-10-21 20:15:07,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:15:07" (1/1) ... [2021-10-21 20:15:07,586 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:15:07" (1/1) ... [2021-10-21 20:15:07,586 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:15:07" (1/1) ... [2021-10-21 20:15:07,616 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:15:07" (1/1) ... [2021-10-21 20:15:07,645 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:15:07" (1/1) ... [2021-10-21 20:15:07,648 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:15:07" (1/1) ... [2021-10-21 20:15:07,654 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:15:07,656 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:15:07,656 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:15:07,656 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:15:07,658 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:15:07" (1/1) ... [2021-10-21 20:15:07,667 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:15:07,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2289f88-987b-4263-8a52-ba126d108242/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:15:07,719 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2289f88-987b-4263-8a52-ba126d108242/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 20:15:07,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2289f88-987b-4263-8a52-ba126d108242/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 20:15:07,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 20:15:07,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 20:15:07,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:15:07,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:15:08,012 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-21 20:15:08,923 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-10-21 20:15:08,924 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-10-21 20:15:08,940 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:15:08,941 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-21 20:15:08,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:15:08 BoogieIcfgContainer [2021-10-21 20:15:08,944 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:15:08,948 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 20:15:08,949 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 20:15:08,954 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 20:15:08,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 08:15:06" (1/3) ... [2021-10-21 20:15:08,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@205766f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:15:08, skipping insertion in model container [2021-10-21 20:15:08,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:15:07" (2/3) ... [2021-10-21 20:15:08,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@205766f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:15:08, skipping insertion in model container [2021-10-21 20:15:08,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:15:08" (3/3) ... [2021-10-21 20:15:08,960 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_12.cil.c [2021-10-21 20:15:08,967 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 20:15:08,967 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 20:15:09,046 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 20:15:09,058 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-21 20:15:09,058 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-21 20:15:09,089 INFO L276 IsEmpty]: Start isEmpty. Operand has 167 states, 165 states have (on average 1.7636363636363637) internal successors, (291), 166 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:09,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-21 20:15:09,103 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:15:09,105 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:15:09,106 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:15:09,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:09,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1659372905, now seen corresponding path program 1 times [2021-10-21 20:15:09,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:09,127 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026513386] [2021-10-21 20:15:09,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:09,128 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:09,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:09,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:09,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:09,525 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026513386] [2021-10-21 20:15:09,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026513386] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:09,527 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:09,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:15:09,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499612165] [2021-10-21 20:15:09,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:15:09,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:09,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:15:09,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:09,579 INFO L87 Difference]: Start difference. First operand has 167 states, 165 states have (on average 1.7636363636363637) internal successors, (291), 166 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:09,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:15:09,925 INFO L93 Difference]: Finished difference Result 353 states and 613 transitions. [2021-10-21 20:15:09,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:15:09,928 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-21 20:15:09,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:15:09,943 INFO L225 Difference]: With dead ends: 353 [2021-10-21 20:15:09,943 INFO L226 Difference]: Without dead ends: 174 [2021-10-21 20:15:09,948 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:09,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-10-21 20:15:10,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 172. [2021-10-21 20:15:10,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 1.6198830409356726) internal successors, (277), 171 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:10,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 277 transitions. [2021-10-21 20:15:10,012 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 277 transitions. Word has length 28 [2021-10-21 20:15:10,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:15:10,013 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 277 transitions. [2021-10-21 20:15:10,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:10,013 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 277 transitions. [2021-10-21 20:15:10,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-21 20:15:10,016 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:15:10,016 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:15:10,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 20:15:10,017 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:15:10,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:10,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1067837001, now seen corresponding path program 1 times [2021-10-21 20:15:10,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:10,018 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015274600] [2021-10-21 20:15:10,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:10,019 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:10,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:10,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:10,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:10,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015274600] [2021-10-21 20:15:10,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015274600] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:10,119 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:10,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:15:10,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627341767] [2021-10-21 20:15:10,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:15:10,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:10,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:15:10,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:10,127 INFO L87 Difference]: Start difference. First operand 172 states and 277 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:10,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:15:10,371 INFO L93 Difference]: Finished difference Result 358 states and 575 transitions. [2021-10-21 20:15:10,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:15:10,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-10-21 20:15:10,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:15:10,374 INFO L225 Difference]: With dead ends: 358 [2021-10-21 20:15:10,375 INFO L226 Difference]: Without dead ends: 194 [2021-10-21 20:15:10,377 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:10,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-10-21 20:15:10,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2021-10-21 20:15:10,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 193 states have (on average 1.5906735751295338) internal successors, (307), 193 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:10,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 307 transitions. [2021-10-21 20:15:10,400 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 307 transitions. Word has length 29 [2021-10-21 20:15:10,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:15:10,400 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 307 transitions. [2021-10-21 20:15:10,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:10,401 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 307 transitions. [2021-10-21 20:15:10,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-21 20:15:10,402 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:15:10,403 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:15:10,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 20:15:10,403 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:15:10,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:10,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1369735938, now seen corresponding path program 1 times [2021-10-21 20:15:10,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:10,405 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850903239] [2021-10-21 20:15:10,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:10,406 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:10,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:10,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:10,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:10,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850903239] [2021-10-21 20:15:10,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850903239] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:10,486 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:10,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:15:10,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613021288] [2021-10-21 20:15:10,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:15:10,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:10,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:15:10,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:10,489 INFO L87 Difference]: Start difference. First operand 194 states and 307 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:10,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:15:10,661 INFO L93 Difference]: Finished difference Result 388 states and 616 transitions. [2021-10-21 20:15:10,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:15:10,662 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-10-21 20:15:10,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:15:10,665 INFO L225 Difference]: With dead ends: 388 [2021-10-21 20:15:10,665 INFO L226 Difference]: Without dead ends: 202 [2021-10-21 20:15:10,667 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:10,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-10-21 20:15:10,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 200. [2021-10-21 20:15:10,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 1.5979899497487438) internal successors, (318), 199 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:10,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 318 transitions. [2021-10-21 20:15:10,701 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 318 transitions. Word has length 29 [2021-10-21 20:15:10,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:15:10,702 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 318 transitions. [2021-10-21 20:15:10,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:10,702 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 318 transitions. [2021-10-21 20:15:10,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-21 20:15:10,706 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:15:10,707 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:15:10,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-21 20:15:10,707 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:15:10,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:10,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1614302654, now seen corresponding path program 1 times [2021-10-21 20:15:10,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:10,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117204637] [2021-10-21 20:15:10,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:10,711 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:10,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:10,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:10,799 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:10,799 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117204637] [2021-10-21 20:15:10,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117204637] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:10,800 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:10,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:15:10,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056709423] [2021-10-21 20:15:10,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:15:10,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:10,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:15:10,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:10,803 INFO L87 Difference]: Start difference. First operand 200 states and 318 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:11,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:15:11,001 INFO L93 Difference]: Finished difference Result 393 states and 626 transitions. [2021-10-21 20:15:11,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:15:11,002 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-10-21 20:15:11,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:15:11,004 INFO L225 Difference]: With dead ends: 393 [2021-10-21 20:15:11,004 INFO L226 Difference]: Without dead ends: 201 [2021-10-21 20:15:11,005 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:11,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-10-21 20:15:11,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2021-10-21 20:15:11,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 200 states have (on average 1.595) internal successors, (319), 200 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:11,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 319 transitions. [2021-10-21 20:15:11,023 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 319 transitions. Word has length 29 [2021-10-21 20:15:11,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:15:11,023 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 319 transitions. [2021-10-21 20:15:11,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:11,024 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 319 transitions. [2021-10-21 20:15:11,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-21 20:15:11,026 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:15:11,026 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:15:11,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-21 20:15:11,027 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:15:11,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:11,028 INFO L82 PathProgramCache]: Analyzing trace with hash -210698213, now seen corresponding path program 1 times [2021-10-21 20:15:11,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:11,029 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905748820] [2021-10-21 20:15:11,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:11,029 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:11,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:11,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:11,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:11,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905748820] [2021-10-21 20:15:11,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905748820] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:11,104 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:11,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:15:11,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732353212] [2021-10-21 20:15:11,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:15:11,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:11,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:15:11,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:11,108 INFO L87 Difference]: Start difference. First operand 201 states and 319 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:11,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:15:11,282 INFO L93 Difference]: Finished difference Result 404 states and 638 transitions. [2021-10-21 20:15:11,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:15:11,284 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-21 20:15:11,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:15:11,287 INFO L225 Difference]: With dead ends: 404 [2021-10-21 20:15:11,287 INFO L226 Difference]: Without dead ends: 211 [2021-10-21 20:15:11,289 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:11,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-10-21 20:15:11,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 201. [2021-10-21 20:15:11,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 200 states have (on average 1.585) internal successors, (317), 200 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:11,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 317 transitions. [2021-10-21 20:15:11,330 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 317 transitions. Word has length 30 [2021-10-21 20:15:11,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:15:11,331 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 317 transitions. [2021-10-21 20:15:11,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:11,332 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 317 transitions. [2021-10-21 20:15:11,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-21 20:15:11,339 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:15:11,339 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:15:11,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-21 20:15:11,340 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:15:11,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:11,341 INFO L82 PathProgramCache]: Analyzing trace with hash -852120702, now seen corresponding path program 1 times [2021-10-21 20:15:11,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:11,341 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615775889] [2021-10-21 20:15:11,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:11,343 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:11,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:11,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:11,439 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:11,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615775889] [2021-10-21 20:15:11,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615775889] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:11,439 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:11,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:15:11,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003475784] [2021-10-21 20:15:11,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:15:11,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:11,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:15:11,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:11,441 INFO L87 Difference]: Start difference. First operand 201 states and 317 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:11,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:15:11,586 INFO L93 Difference]: Finished difference Result 404 states and 634 transitions. [2021-10-21 20:15:11,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:15:11,598 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-10-21 20:15:11,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:15:11,600 INFO L225 Difference]: With dead ends: 404 [2021-10-21 20:15:11,602 INFO L226 Difference]: Without dead ends: 211 [2021-10-21 20:15:11,603 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:11,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-10-21 20:15:11,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 201. [2021-10-21 20:15:11,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 200 states have (on average 1.575) internal successors, (315), 200 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:11,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 315 transitions. [2021-10-21 20:15:11,629 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 315 transitions. Word has length 31 [2021-10-21 20:15:11,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:15:11,629 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 315 transitions. [2021-10-21 20:15:11,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:11,630 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 315 transitions. [2021-10-21 20:15:11,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-21 20:15:11,638 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:15:11,638 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:15:11,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-21 20:15:11,639 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:15:11,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:11,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1795373184, now seen corresponding path program 1 times [2021-10-21 20:15:11,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:11,641 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152752382] [2021-10-21 20:15:11,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:11,643 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:11,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:11,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:11,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:11,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152752382] [2021-10-21 20:15:11,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152752382] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:11,729 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:11,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:15:11,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681772945] [2021-10-21 20:15:11,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:15:11,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:11,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:15:11,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:11,733 INFO L87 Difference]: Start difference. First operand 201 states and 315 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:11,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:15:11,862 INFO L93 Difference]: Finished difference Result 404 states and 630 transitions. [2021-10-21 20:15:11,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:15:11,863 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-21 20:15:11,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:15:11,870 INFO L225 Difference]: With dead ends: 404 [2021-10-21 20:15:11,871 INFO L226 Difference]: Without dead ends: 211 [2021-10-21 20:15:11,872 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:11,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-10-21 20:15:11,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 201. [2021-10-21 20:15:11,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 200 states have (on average 1.565) internal successors, (313), 200 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:11,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 313 transitions. [2021-10-21 20:15:11,885 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 313 transitions. Word has length 32 [2021-10-21 20:15:11,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:15:11,886 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 313 transitions. [2021-10-21 20:15:11,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:11,886 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 313 transitions. [2021-10-21 20:15:11,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-21 20:15:11,889 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:15:11,889 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:15:11,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-21 20:15:11,891 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:15:11,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:11,891 INFO L82 PathProgramCache]: Analyzing trace with hash -1439838815, now seen corresponding path program 1 times [2021-10-21 20:15:11,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:11,893 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684020325] [2021-10-21 20:15:11,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:11,894 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:11,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:12,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:12,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:12,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684020325] [2021-10-21 20:15:12,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684020325] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:12,024 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:12,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 20:15:12,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760965819] [2021-10-21 20:15:12,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 20:15:12,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:12,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 20:15:12,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 20:15:12,026 INFO L87 Difference]: Start difference. First operand 201 states and 313 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:12,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:15:12,307 INFO L93 Difference]: Finished difference Result 600 states and 930 transitions. [2021-10-21 20:15:12,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 20:15:12,308 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-21 20:15:12,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:15:12,311 INFO L225 Difference]: With dead ends: 600 [2021-10-21 20:15:12,312 INFO L226 Difference]: Without dead ends: 407 [2021-10-21 20:15:12,313 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:15:12,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2021-10-21 20:15:12,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 383. [2021-10-21 20:15:12,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 1.557591623036649) internal successors, (595), 382 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:12,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 595 transitions. [2021-10-21 20:15:12,338 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 595 transitions. Word has length 32 [2021-10-21 20:15:12,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:15:12,338 INFO L470 AbstractCegarLoop]: Abstraction has 383 states and 595 transitions. [2021-10-21 20:15:12,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:12,339 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 595 transitions. [2021-10-21 20:15:12,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-21 20:15:12,340 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:15:12,340 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:15:12,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-21 20:15:12,341 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:15:12,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:12,342 INFO L82 PathProgramCache]: Analyzing trace with hash -443745160, now seen corresponding path program 1 times [2021-10-21 20:15:12,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:12,342 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984509392] [2021-10-21 20:15:12,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:12,343 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:12,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:12,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:12,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:12,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984509392] [2021-10-21 20:15:12,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984509392] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:12,388 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:12,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:15:12,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224008553] [2021-10-21 20:15:12,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:15:12,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:12,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:15:12,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:12,393 INFO L87 Difference]: Start difference. First operand 383 states and 595 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:12,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:15:12,595 INFO L93 Difference]: Finished difference Result 842 states and 1324 transitions. [2021-10-21 20:15:12,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:15:12,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-10-21 20:15:12,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:15:12,602 INFO L225 Difference]: With dead ends: 842 [2021-10-21 20:15:12,604 INFO L226 Difference]: Without dead ends: 467 [2021-10-21 20:15:12,609 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:12,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2021-10-21 20:15:12,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 449. [2021-10-21 20:15:12,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 448 states have (on average 1.5848214285714286) internal successors, (710), 448 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:12,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 710 transitions. [2021-10-21 20:15:12,642 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 710 transitions. Word has length 44 [2021-10-21 20:15:12,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:15:12,645 INFO L470 AbstractCegarLoop]: Abstraction has 449 states and 710 transitions. [2021-10-21 20:15:12,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:12,645 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 710 transitions. [2021-10-21 20:15:12,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-21 20:15:12,647 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:15:12,647 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:15:12,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-21 20:15:12,647 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:15:12,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:12,648 INFO L82 PathProgramCache]: Analyzing trace with hash 974176282, now seen corresponding path program 1 times [2021-10-21 20:15:12,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:12,650 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730365193] [2021-10-21 20:15:12,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:12,651 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:12,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:12,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:12,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:12,733 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730365193] [2021-10-21 20:15:12,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730365193] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:12,734 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:12,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:15:12,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430975967] [2021-10-21 20:15:12,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:15:12,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:12,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:15:12,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:12,736 INFO L87 Difference]: Start difference. First operand 449 states and 710 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:12,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:15:12,949 INFO L93 Difference]: Finished difference Result 931 states and 1482 transitions. [2021-10-21 20:15:12,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:15:12,950 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-10-21 20:15:12,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:15:12,954 INFO L225 Difference]: With dead ends: 931 [2021-10-21 20:15:12,954 INFO L226 Difference]: Without dead ends: 490 [2021-10-21 20:15:12,955 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:12,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2021-10-21 20:15:12,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 472. [2021-10-21 20:15:12,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 471 states have (on average 1.5987261146496816) internal successors, (753), 471 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:12,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 753 transitions. [2021-10-21 20:15:12,985 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 753 transitions. Word has length 45 [2021-10-21 20:15:12,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:15:12,986 INFO L470 AbstractCegarLoop]: Abstraction has 472 states and 753 transitions. [2021-10-21 20:15:12,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:12,986 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 753 transitions. [2021-10-21 20:15:12,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-10-21 20:15:12,989 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:15:12,989 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:15:12,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-21 20:15:12,990 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:15:12,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:12,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1540899075, now seen corresponding path program 1 times [2021-10-21 20:15:12,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:12,993 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398817312] [2021-10-21 20:15:12,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:12,994 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:13,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:13,088 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-21 20:15:13,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:13,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398817312] [2021-10-21 20:15:13,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398817312] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:13,089 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:13,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:15:13,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072712163] [2021-10-21 20:15:13,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:15:13,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:13,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:15:13,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:13,092 INFO L87 Difference]: Start difference. First operand 472 states and 753 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:13,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:15:13,262 INFO L93 Difference]: Finished difference Result 988 states and 1578 transitions. [2021-10-21 20:15:13,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:15:13,262 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-10-21 20:15:13,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:15:13,267 INFO L225 Difference]: With dead ends: 988 [2021-10-21 20:15:13,267 INFO L226 Difference]: Without dead ends: 524 [2021-10-21 20:15:13,269 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:13,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2021-10-21 20:15:13,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 506. [2021-10-21 20:15:13,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 505 states have (on average 1.5920792079207922) internal successors, (804), 505 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:13,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 804 transitions. [2021-10-21 20:15:13,301 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 804 transitions. Word has length 56 [2021-10-21 20:15:13,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:15:13,302 INFO L470 AbstractCegarLoop]: Abstraction has 506 states and 804 transitions. [2021-10-21 20:15:13,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:13,302 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 804 transitions. [2021-10-21 20:15:13,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-21 20:15:13,304 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:15:13,304 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:15:13,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-21 20:15:13,305 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:15:13,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:13,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1188180310, now seen corresponding path program 1 times [2021-10-21 20:15:13,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:13,306 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146972269] [2021-10-21 20:15:13,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:13,307 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:13,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:13,341 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-21 20:15:13,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:13,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146972269] [2021-10-21 20:15:13,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146972269] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:13,343 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:13,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:15:13,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866204867] [2021-10-21 20:15:13,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:15:13,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:13,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:15:13,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:13,345 INFO L87 Difference]: Start difference. First operand 506 states and 804 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:13,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:15:13,517 INFO L93 Difference]: Finished difference Result 1022 states and 1626 transitions. [2021-10-21 20:15:13,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:15:13,518 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-10-21 20:15:13,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:15:13,522 INFO L225 Difference]: With dead ends: 1022 [2021-10-21 20:15:13,522 INFO L226 Difference]: Without dead ends: 524 [2021-10-21 20:15:13,524 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:13,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2021-10-21 20:15:13,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 506. [2021-10-21 20:15:13,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 505 states have (on average 1.5861386138613862) internal successors, (801), 505 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:13,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 801 transitions. [2021-10-21 20:15:13,570 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 801 transitions. Word has length 57 [2021-10-21 20:15:13,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:15:13,570 INFO L470 AbstractCegarLoop]: Abstraction has 506 states and 801 transitions. [2021-10-21 20:15:13,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:13,571 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 801 transitions. [2021-10-21 20:15:13,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-21 20:15:13,572 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:15:13,573 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:15:13,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-21 20:15:13,573 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:15:13,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:13,574 INFO L82 PathProgramCache]: Analyzing trace with hash -2067348000, now seen corresponding path program 1 times [2021-10-21 20:15:13,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:13,575 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800479583] [2021-10-21 20:15:13,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:13,575 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:13,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:13,646 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-21 20:15:13,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:13,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800479583] [2021-10-21 20:15:13,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800479583] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:13,647 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:13,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:15:13,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531288134] [2021-10-21 20:15:13,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:15:13,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:13,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:15:13,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:13,650 INFO L87 Difference]: Start difference. First operand 506 states and 801 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:13,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:15:13,829 INFO L93 Difference]: Finished difference Result 1069 states and 1697 transitions. [2021-10-21 20:15:13,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:15:13,830 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-10-21 20:15:13,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:15:13,835 INFO L225 Difference]: With dead ends: 1069 [2021-10-21 20:15:13,835 INFO L226 Difference]: Without dead ends: 571 [2021-10-21 20:15:13,837 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:13,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2021-10-21 20:15:13,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 569. [2021-10-21 20:15:13,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 568 states have (on average 1.5809859154929577) internal successors, (898), 568 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:13,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 898 transitions. [2021-10-21 20:15:13,870 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 898 transitions. Word has length 57 [2021-10-21 20:15:13,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:15:13,871 INFO L470 AbstractCegarLoop]: Abstraction has 569 states and 898 transitions. [2021-10-21 20:15:13,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:13,871 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 898 transitions. [2021-10-21 20:15:13,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-10-21 20:15:13,873 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:15:13,874 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-21 20:15:13,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-21 20:15:13,874 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:15:13,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:13,875 INFO L82 PathProgramCache]: Analyzing trace with hash -583256949, now seen corresponding path program 1 times [2021-10-21 20:15:13,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:13,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789028744] [2021-10-21 20:15:13,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:13,876 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:13,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:13,912 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:13,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:13,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789028744] [2021-10-21 20:15:13,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789028744] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:13,913 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:13,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:15:13,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739293504] [2021-10-21 20:15:13,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:15:13,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:13,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:15:13,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:13,915 INFO L87 Difference]: Start difference. First operand 569 states and 898 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:14,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:15:14,094 INFO L93 Difference]: Finished difference Result 1179 states and 1859 transitions. [2021-10-21 20:15:14,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:15:14,095 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-10-21 20:15:14,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:15:14,099 INFO L225 Difference]: With dead ends: 1179 [2021-10-21 20:15:14,099 INFO L226 Difference]: Without dead ends: 618 [2021-10-21 20:15:14,102 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:14,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2021-10-21 20:15:14,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 612. [2021-10-21 20:15:14,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 611 states have (on average 1.574468085106383) internal successors, (962), 611 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:14,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 962 transitions. [2021-10-21 20:15:14,147 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 962 transitions. Word has length 79 [2021-10-21 20:15:14,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:15:14,148 INFO L470 AbstractCegarLoop]: Abstraction has 612 states and 962 transitions. [2021-10-21 20:15:14,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:14,148 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 962 transitions. [2021-10-21 20:15:14,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-21 20:15:14,154 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:15:14,155 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-21 20:15:14,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-21 20:15:14,155 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:15:14,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:14,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1357251849, now seen corresponding path program 1 times [2021-10-21 20:15:14,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:14,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567315470] [2021-10-21 20:15:14,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:14,157 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:14,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:14,207 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:14,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:14,207 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567315470] [2021-10-21 20:15:14,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567315470] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:14,208 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:14,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:15:14,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095383983] [2021-10-21 20:15:14,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:15:14,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:14,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:15:14,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:14,210 INFO L87 Difference]: Start difference. First operand 612 states and 962 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:14,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:15:14,393 INFO L93 Difference]: Finished difference Result 1222 states and 1920 transitions. [2021-10-21 20:15:14,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:15:14,394 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-10-21 20:15:14,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:15:14,399 INFO L225 Difference]: With dead ends: 1222 [2021-10-21 20:15:14,399 INFO L226 Difference]: Without dead ends: 618 [2021-10-21 20:15:14,402 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:14,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2021-10-21 20:15:14,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 612. [2021-10-21 20:15:14,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 611 states have (on average 1.5695581014729951) internal successors, (959), 611 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:14,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 959 transitions. [2021-10-21 20:15:14,439 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 959 transitions. Word has length 80 [2021-10-21 20:15:14,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:15:14,440 INFO L470 AbstractCegarLoop]: Abstraction has 612 states and 959 transitions. [2021-10-21 20:15:14,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:14,440 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 959 transitions. [2021-10-21 20:15:14,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-21 20:15:14,442 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:15:14,443 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:15:14,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-21 20:15:14,443 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:15:14,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:14,444 INFO L82 PathProgramCache]: Analyzing trace with hash 2054627548, now seen corresponding path program 1 times [2021-10-21 20:15:14,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:14,447 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319273097] [2021-10-21 20:15:14,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:14,447 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:14,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:14,497 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-21 20:15:14,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:14,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319273097] [2021-10-21 20:15:14,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319273097] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:14,501 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:14,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:15:14,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140468823] [2021-10-21 20:15:14,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:15:14,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:14,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:15:14,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:14,504 INFO L87 Difference]: Start difference. First operand 612 states and 959 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:14,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:15:14,672 INFO L93 Difference]: Finished difference Result 1218 states and 1908 transitions. [2021-10-21 20:15:14,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:15:14,672 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-10-21 20:15:14,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:15:14,677 INFO L225 Difference]: With dead ends: 1218 [2021-10-21 20:15:14,678 INFO L226 Difference]: Without dead ends: 614 [2021-10-21 20:15:14,682 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:14,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2021-10-21 20:15:14,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 612. [2021-10-21 20:15:14,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 611 states have (on average 1.5613747954173487) internal successors, (954), 611 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:14,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 954 transitions. [2021-10-21 20:15:14,734 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 954 transitions. Word has length 85 [2021-10-21 20:15:14,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:15:14,735 INFO L470 AbstractCegarLoop]: Abstraction has 612 states and 954 transitions. [2021-10-21 20:15:14,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:14,735 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 954 transitions. [2021-10-21 20:15:14,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-10-21 20:15:14,737 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:15:14,738 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:15:14,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-21 20:15:14,738 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:15:14,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:14,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1047765588, now seen corresponding path program 1 times [2021-10-21 20:15:14,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:14,740 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224912605] [2021-10-21 20:15:14,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:14,740 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:14,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:14,787 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-10-21 20:15:14,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:14,788 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224912605] [2021-10-21 20:15:14,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224912605] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:14,788 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:14,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:15:14,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341023281] [2021-10-21 20:15:14,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:15:14,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:14,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:15:14,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:14,791 INFO L87 Difference]: Start difference. First operand 612 states and 954 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:14,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:15:14,963 INFO L93 Difference]: Finished difference Result 1276 states and 1991 transitions. [2021-10-21 20:15:14,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:15:14,964 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-10-21 20:15:14,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:15:14,969 INFO L225 Difference]: With dead ends: 1276 [2021-10-21 20:15:14,969 INFO L226 Difference]: Without dead ends: 672 [2021-10-21 20:15:14,971 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:14,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2021-10-21 20:15:15,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 644. [2021-10-21 20:15:15,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 644 states, 643 states have (on average 1.5505443234836702) internal successors, (997), 643 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:15,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 997 transitions. [2021-10-21 20:15:15,015 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 997 transitions. Word has length 93 [2021-10-21 20:15:15,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:15:15,015 INFO L470 AbstractCegarLoop]: Abstraction has 644 states and 997 transitions. [2021-10-21 20:15:15,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:15,016 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 997 transitions. [2021-10-21 20:15:15,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-10-21 20:15:15,018 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:15:15,019 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:15:15,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-10-21 20:15:15,019 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:15:15,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:15,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1111400187, now seen corresponding path program 1 times [2021-10-21 20:15:15,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:15,021 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57504667] [2021-10-21 20:15:15,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:15,021 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:15,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:15,062 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-10-21 20:15:15,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:15,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57504667] [2021-10-21 20:15:15,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57504667] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:15,063 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:15,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:15:15,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277630933] [2021-10-21 20:15:15,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:15:15,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:15,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:15:15,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:15,067 INFO L87 Difference]: Start difference. First operand 644 states and 997 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:15,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:15:15,237 INFO L93 Difference]: Finished difference Result 1308 states and 2028 transitions. [2021-10-21 20:15:15,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:15:15,238 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-10-21 20:15:15,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:15:15,243 INFO L225 Difference]: With dead ends: 1308 [2021-10-21 20:15:15,243 INFO L226 Difference]: Without dead ends: 672 [2021-10-21 20:15:15,245 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:15,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2021-10-21 20:15:15,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 644. [2021-10-21 20:15:15,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 644 states, 643 states have (on average 1.5412130637636081) internal successors, (991), 643 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:15,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 991 transitions. [2021-10-21 20:15:15,305 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 991 transitions. Word has length 94 [2021-10-21 20:15:15,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:15:15,306 INFO L470 AbstractCegarLoop]: Abstraction has 644 states and 991 transitions. [2021-10-21 20:15:15,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:15,306 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 991 transitions. [2021-10-21 20:15:15,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-21 20:15:15,309 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:15:15,309 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:15:15,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-10-21 20:15:15,310 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:15:15,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:15,311 INFO L82 PathProgramCache]: Analyzing trace with hash -51700436, now seen corresponding path program 1 times [2021-10-21 20:15:15,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:15,311 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771616749] [2021-10-21 20:15:15,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:15,312 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:15,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:15,359 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-21 20:15:15,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:15,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771616749] [2021-10-21 20:15:15,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771616749] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:15,360 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:15,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:15:15,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139059865] [2021-10-21 20:15:15,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:15:15,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:15,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:15:15,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:15,365 INFO L87 Difference]: Start difference. First operand 644 states and 991 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:15,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:15:15,577 INFO L93 Difference]: Finished difference Result 1344 states and 2068 transitions. [2021-10-21 20:15:15,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:15:15,578 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-10-21 20:15:15,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:15:15,583 INFO L225 Difference]: With dead ends: 1344 [2021-10-21 20:15:15,583 INFO L226 Difference]: Without dead ends: 708 [2021-10-21 20:15:15,585 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:15,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2021-10-21 20:15:15,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 696. [2021-10-21 20:15:15,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 696 states, 695 states have (on average 1.5352517985611511) internal successors, (1067), 695 states have internal predecessors, (1067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:15,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 1067 transitions. [2021-10-21 20:15:15,630 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 1067 transitions. Word has length 100 [2021-10-21 20:15:15,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:15:15,631 INFO L470 AbstractCegarLoop]: Abstraction has 696 states and 1067 transitions. [2021-10-21 20:15:15,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:15,632 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 1067 transitions. [2021-10-21 20:15:15,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-10-21 20:15:15,634 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:15:15,634 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:15:15,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-10-21 20:15:15,635 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:15:15,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:15,636 INFO L82 PathProgramCache]: Analyzing trace with hash -530812530, now seen corresponding path program 1 times [2021-10-21 20:15:15,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:15,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4894535] [2021-10-21 20:15:15,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:15,637 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:15,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:15,694 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-21 20:15:15,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:15,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4894535] [2021-10-21 20:15:15,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4894535] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:15,696 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:15,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:15:15,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821356070] [2021-10-21 20:15:15,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:15:15,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:15,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:15:15,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:15,698 INFO L87 Difference]: Start difference. First operand 696 states and 1067 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:15,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:15:15,895 INFO L93 Difference]: Finished difference Result 1401 states and 2150 transitions. [2021-10-21 20:15:15,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:15:15,896 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-10-21 20:15:15,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:15:15,901 INFO L225 Difference]: With dead ends: 1401 [2021-10-21 20:15:15,902 INFO L226 Difference]: Without dead ends: 709 [2021-10-21 20:15:15,904 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:15,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2021-10-21 20:15:15,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 697. [2021-10-21 20:15:15,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 696 states have (on average 1.5344827586206897) internal successors, (1068), 696 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:15,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 1068 transitions. [2021-10-21 20:15:15,956 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 1068 transitions. Word has length 101 [2021-10-21 20:15:15,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:15:15,957 INFO L470 AbstractCegarLoop]: Abstraction has 697 states and 1068 transitions. [2021-10-21 20:15:15,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:15,957 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 1068 transitions. [2021-10-21 20:15:15,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-10-21 20:15:15,960 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:15:15,960 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:15:15,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-10-21 20:15:15,961 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:15:15,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:15,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1306174224, now seen corresponding path program 1 times [2021-10-21 20:15:15,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:15,962 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738351359] [2021-10-21 20:15:15,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:15,963 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:15,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:16,011 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-10-21 20:15:16,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:16,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738351359] [2021-10-21 20:15:16,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738351359] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:16,012 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:16,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:15:16,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847600282] [2021-10-21 20:15:16,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:15:16,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:16,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:15:16,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:16,016 INFO L87 Difference]: Start difference. First operand 697 states and 1068 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:16,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:15:16,212 INFO L93 Difference]: Finished difference Result 1433 states and 2192 transitions. [2021-10-21 20:15:16,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:15:16,213 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-10-21 20:15:16,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:15:16,219 INFO L225 Difference]: With dead ends: 1433 [2021-10-21 20:15:16,219 INFO L226 Difference]: Without dead ends: 744 [2021-10-21 20:15:16,221 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:16,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2021-10-21 20:15:16,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 738. [2021-10-21 20:15:16,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 738 states, 737 states have (on average 1.5237449118046134) internal successors, (1123), 737 states have internal predecessors, (1123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:16,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1123 transitions. [2021-10-21 20:15:16,275 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1123 transitions. Word has length 112 [2021-10-21 20:15:16,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:15:16,276 INFO L470 AbstractCegarLoop]: Abstraction has 738 states and 1123 transitions. [2021-10-21 20:15:16,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:16,276 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1123 transitions. [2021-10-21 20:15:16,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-10-21 20:15:16,279 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:15:16,279 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:15:16,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-10-21 20:15:16,280 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:15:16,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:16,281 INFO L82 PathProgramCache]: Analyzing trace with hash -142977294, now seen corresponding path program 1 times [2021-10-21 20:15:16,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:16,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495060834] [2021-10-21 20:15:16,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:16,282 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:16,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:16,343 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-10-21 20:15:16,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:16,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495060834] [2021-10-21 20:15:16,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495060834] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:16,344 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:16,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:15:16,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608107106] [2021-10-21 20:15:16,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:15:16,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:16,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:15:16,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:16,346 INFO L87 Difference]: Start difference. First operand 738 states and 1123 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:16,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:15:16,538 INFO L93 Difference]: Finished difference Result 1474 states and 2242 transitions. [2021-10-21 20:15:16,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:15:16,539 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2021-10-21 20:15:16,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:15:16,545 INFO L225 Difference]: With dead ends: 1474 [2021-10-21 20:15:16,545 INFO L226 Difference]: Without dead ends: 744 [2021-10-21 20:15:16,548 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:16,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2021-10-21 20:15:16,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 738. [2021-10-21 20:15:16,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 738 states, 737 states have (on average 1.5169606512890095) internal successors, (1118), 737 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:16,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1118 transitions. [2021-10-21 20:15:16,598 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1118 transitions. Word has length 113 [2021-10-21 20:15:16,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:15:16,598 INFO L470 AbstractCegarLoop]: Abstraction has 738 states and 1118 transitions. [2021-10-21 20:15:16,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:16,599 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1118 transitions. [2021-10-21 20:15:16,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-21 20:15:16,601 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:15:16,602 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-10-21 20:15:16,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-10-21 20:15:16,602 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:15:16,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:16,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1809562376, now seen corresponding path program 1 times [2021-10-21 20:15:16,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:16,604 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140415482] [2021-10-21 20:15:16,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:16,604 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:16,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:16,644 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-10-21 20:15:16,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:16,645 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140415482] [2021-10-21 20:15:16,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140415482] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:16,646 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:16,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:15:16,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822820662] [2021-10-21 20:15:16,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:15:16,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:16,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:15:16,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:16,651 INFO L87 Difference]: Start difference. First operand 738 states and 1118 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:16,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:15:16,827 INFO L93 Difference]: Finished difference Result 1510 states and 2285 transitions. [2021-10-21 20:15:16,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:15:16,828 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-10-21 20:15:16,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:15:16,834 INFO L225 Difference]: With dead ends: 1510 [2021-10-21 20:15:16,834 INFO L226 Difference]: Without dead ends: 780 [2021-10-21 20:15:16,836 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:16,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2021-10-21 20:15:16,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 770. [2021-10-21 20:15:16,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 770 states, 769 states have (on average 1.5032509752925878) internal successors, (1156), 769 states have internal predecessors, (1156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:16,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 1156 transitions. [2021-10-21 20:15:16,886 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 1156 transitions. Word has length 115 [2021-10-21 20:15:16,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:15:16,887 INFO L470 AbstractCegarLoop]: Abstraction has 770 states and 1156 transitions. [2021-10-21 20:15:16,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:16,887 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 1156 transitions. [2021-10-21 20:15:16,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-10-21 20:15:16,890 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:15:16,890 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-10-21 20:15:16,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-10-21 20:15:16,891 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:15:16,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:16,892 INFO L82 PathProgramCache]: Analyzing trace with hash 172042817, now seen corresponding path program 1 times [2021-10-21 20:15:16,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:16,892 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999584613] [2021-10-21 20:15:16,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:16,893 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:16,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:16,942 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-10-21 20:15:16,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:16,943 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999584613] [2021-10-21 20:15:16,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999584613] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:16,943 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:16,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:15:16,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939446588] [2021-10-21 20:15:16,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:15:16,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:16,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:15:16,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:16,946 INFO L87 Difference]: Start difference. First operand 770 states and 1156 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:17,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:15:17,124 INFO L93 Difference]: Finished difference Result 1542 states and 2314 transitions. [2021-10-21 20:15:17,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:15:17,125 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2021-10-21 20:15:17,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:15:17,131 INFO L225 Difference]: With dead ends: 1542 [2021-10-21 20:15:17,131 INFO L226 Difference]: Without dead ends: 780 [2021-10-21 20:15:17,133 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:17,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2021-10-21 20:15:17,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 770. [2021-10-21 20:15:17,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 770 states, 769 states have (on average 1.4915474642392719) internal successors, (1147), 769 states have internal predecessors, (1147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:17,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 1147 transitions. [2021-10-21 20:15:17,183 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 1147 transitions. Word has length 116 [2021-10-21 20:15:17,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:15:17,184 INFO L470 AbstractCegarLoop]: Abstraction has 770 states and 1147 transitions. [2021-10-21 20:15:17,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:17,184 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 1147 transitions. [2021-10-21 20:15:17,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-10-21 20:15:17,187 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:15:17,188 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1] [2021-10-21 20:15:17,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-10-21 20:15:17,188 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:15:17,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:17,189 INFO L82 PathProgramCache]: Analyzing trace with hash -1961382768, now seen corresponding path program 1 times [2021-10-21 20:15:17,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:17,189 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595170476] [2021-10-21 20:15:17,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:17,190 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:17,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:17,257 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2021-10-21 20:15:17,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:17,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595170476] [2021-10-21 20:15:17,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595170476] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:17,258 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:17,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:15:17,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136504098] [2021-10-21 20:15:17,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:15:17,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:17,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:15:17,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:17,260 INFO L87 Difference]: Start difference. First operand 770 states and 1147 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:17,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:15:17,447 INFO L93 Difference]: Finished difference Result 1568 states and 2335 transitions. [2021-10-21 20:15:17,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:15:17,448 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2021-10-21 20:15:17,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:15:17,454 INFO L225 Difference]: With dead ends: 1568 [2021-10-21 20:15:17,454 INFO L226 Difference]: Without dead ends: 806 [2021-10-21 20:15:17,456 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:17,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2021-10-21 20:15:17,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 798. [2021-10-21 20:15:17,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 798 states, 797 states have (on average 1.478042659974906) internal successors, (1178), 797 states have internal predecessors, (1178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:17,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 1178 transitions. [2021-10-21 20:15:17,514 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 1178 transitions. Word has length 137 [2021-10-21 20:15:17,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:15:17,514 INFO L470 AbstractCegarLoop]: Abstraction has 798 states and 1178 transitions. [2021-10-21 20:15:17,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:17,515 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 1178 transitions. [2021-10-21 20:15:17,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-10-21 20:15:17,519 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:15:17,519 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1] [2021-10-21 20:15:17,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-10-21 20:15:17,520 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:15:17,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:17,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1483046825, now seen corresponding path program 1 times [2021-10-21 20:15:17,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:17,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266002111] [2021-10-21 20:15:17,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:17,522 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:17,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:17,571 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2021-10-21 20:15:17,572 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:17,572 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266002111] [2021-10-21 20:15:17,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266002111] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:17,572 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:17,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:15:17,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807248670] [2021-10-21 20:15:17,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:15:17,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:17,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:15:17,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:17,575 INFO L87 Difference]: Start difference. First operand 798 states and 1178 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:17,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:15:17,746 INFO L93 Difference]: Finished difference Result 1596 states and 2356 transitions. [2021-10-21 20:15:17,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:15:17,747 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2021-10-21 20:15:17,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:15:17,753 INFO L225 Difference]: With dead ends: 1596 [2021-10-21 20:15:17,754 INFO L226 Difference]: Without dead ends: 806 [2021-10-21 20:15:17,755 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:17,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2021-10-21 20:15:17,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 798. [2021-10-21 20:15:17,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 798 states, 797 states have (on average 1.465495608531995) internal successors, (1168), 797 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:17,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 1168 transitions. [2021-10-21 20:15:17,808 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 1168 transitions. Word has length 138 [2021-10-21 20:15:17,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:15:17,808 INFO L470 AbstractCegarLoop]: Abstraction has 798 states and 1168 transitions. [2021-10-21 20:15:17,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:17,809 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 1168 transitions. [2021-10-21 20:15:17,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-10-21 20:15:17,812 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:15:17,813 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:15:17,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-10-21 20:15:17,813 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:15:17,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:17,814 INFO L82 PathProgramCache]: Analyzing trace with hash -1313212300, now seen corresponding path program 1 times [2021-10-21 20:15:17,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:17,814 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627985928] [2021-10-21 20:15:17,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:17,815 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:17,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:17,857 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-10-21 20:15:17,857 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:17,857 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627985928] [2021-10-21 20:15:17,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627985928] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:17,858 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:17,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:15:17,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629342237] [2021-10-21 20:15:17,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:15:17,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:17,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:15:17,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:17,860 INFO L87 Difference]: Start difference. First operand 798 states and 1168 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:18,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:15:18,071 INFO L93 Difference]: Finished difference Result 1651 states and 2410 transitions. [2021-10-21 20:15:18,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:15:18,071 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2021-10-21 20:15:18,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:15:18,077 INFO L225 Difference]: With dead ends: 1651 [2021-10-21 20:15:18,078 INFO L226 Difference]: Without dead ends: 861 [2021-10-21 20:15:18,079 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:18,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2021-10-21 20:15:18,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 847. [2021-10-21 20:15:18,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 847 states, 846 states have (on average 1.4527186761229314) internal successors, (1229), 846 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:18,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1229 transitions. [2021-10-21 20:15:18,138 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1229 transitions. Word has length 141 [2021-10-21 20:15:18,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:15:18,138 INFO L470 AbstractCegarLoop]: Abstraction has 847 states and 1229 transitions. [2021-10-21 20:15:18,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:18,139 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1229 transitions. [2021-10-21 20:15:18,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-10-21 20:15:18,142 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:15:18,143 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:15:18,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-10-21 20:15:18,143 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:15:18,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:18,144 INFO L82 PathProgramCache]: Analyzing trace with hash 75909554, now seen corresponding path program 1 times [2021-10-21 20:15:18,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:18,145 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962455322] [2021-10-21 20:15:18,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:18,146 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:18,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:18,200 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-10-21 20:15:18,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:18,201 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962455322] [2021-10-21 20:15:18,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962455322] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:18,201 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:18,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:15:18,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58274299] [2021-10-21 20:15:18,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:15:18,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:18,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:15:18,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:18,204 INFO L87 Difference]: Start difference. First operand 847 states and 1229 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:18,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:15:18,410 INFO L93 Difference]: Finished difference Result 1700 states and 2468 transitions. [2021-10-21 20:15:18,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:15:18,413 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2021-10-21 20:15:18,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:15:18,419 INFO L225 Difference]: With dead ends: 1700 [2021-10-21 20:15:18,419 INFO L226 Difference]: Without dead ends: 845 [2021-10-21 20:15:18,421 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:18,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2021-10-21 20:15:18,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 831. [2021-10-21 20:15:18,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 830 states have (on average 1.453012048192771) internal successors, (1206), 830 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:18,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 1206 transitions. [2021-10-21 20:15:18,479 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 1206 transitions. Word has length 142 [2021-10-21 20:15:18,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:15:18,479 INFO L470 AbstractCegarLoop]: Abstraction has 831 states and 1206 transitions. [2021-10-21 20:15:18,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:18,480 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 1206 transitions. [2021-10-21 20:15:18,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-10-21 20:15:18,483 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:15:18,483 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-10-21 20:15:18,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-10-21 20:15:18,484 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:15:18,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:18,484 INFO L82 PathProgramCache]: Analyzing trace with hash -2072592764, now seen corresponding path program 1 times [2021-10-21 20:15:18,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:18,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855987067] [2021-10-21 20:15:18,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:18,485 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:18,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:18,526 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-10-21 20:15:18,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:18,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855987067] [2021-10-21 20:15:18,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855987067] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:18,528 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:18,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:15:18,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461771685] [2021-10-21 20:15:18,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:15:18,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:18,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:15:18,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:18,530 INFO L87 Difference]: Start difference. First operand 831 states and 1206 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:18,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:15:18,726 INFO L93 Difference]: Finished difference Result 1666 states and 2418 transitions. [2021-10-21 20:15:18,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:15:18,727 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2021-10-21 20:15:18,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:15:18,733 INFO L225 Difference]: With dead ends: 1666 [2021-10-21 20:15:18,734 INFO L226 Difference]: Without dead ends: 843 [2021-10-21 20:15:18,737 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:18,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2021-10-21 20:15:18,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 831. [2021-10-21 20:15:18,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 830 states have (on average 1.4445783132530121) internal successors, (1199), 830 states have internal predecessors, (1199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:18,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 1199 transitions. [2021-10-21 20:15:18,792 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 1199 transitions. Word has length 146 [2021-10-21 20:15:18,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:15:18,793 INFO L470 AbstractCegarLoop]: Abstraction has 831 states and 1199 transitions. [2021-10-21 20:15:18,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:18,793 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 1199 transitions. [2021-10-21 20:15:18,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-10-21 20:15:18,796 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:15:18,796 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-10-21 20:15:18,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-10-21 20:15:18,797 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:15:18,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:18,798 INFO L82 PathProgramCache]: Analyzing trace with hash 369501830, now seen corresponding path program 1 times [2021-10-21 20:15:18,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:18,798 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255370474] [2021-10-21 20:15:18,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:18,799 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:18,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:18,853 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-10-21 20:15:18,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:18,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255370474] [2021-10-21 20:15:18,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255370474] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:18,854 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:18,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:15:18,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541581109] [2021-10-21 20:15:18,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:15:18,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:18,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:15:18,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:18,856 INFO L87 Difference]: Start difference. First operand 831 states and 1199 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:19,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:15:19,046 INFO L93 Difference]: Finished difference Result 1666 states and 2404 transitions. [2021-10-21 20:15:19,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:15:19,046 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 147 [2021-10-21 20:15:19,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:15:19,053 INFO L225 Difference]: With dead ends: 1666 [2021-10-21 20:15:19,053 INFO L226 Difference]: Without dead ends: 826 [2021-10-21 20:15:19,055 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:19,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2021-10-21 20:15:19,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 814. [2021-10-21 20:15:19,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 813 states have (on average 1.4391143911439115) internal successors, (1170), 813 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:19,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 1170 transitions. [2021-10-21 20:15:19,139 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 1170 transitions. Word has length 147 [2021-10-21 20:15:19,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:15:19,139 INFO L470 AbstractCegarLoop]: Abstraction has 814 states and 1170 transitions. [2021-10-21 20:15:19,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:19,140 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 1170 transitions. [2021-10-21 20:15:19,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-10-21 20:15:19,142 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:15:19,142 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1] [2021-10-21 20:15:19,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-10-21 20:15:19,143 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:15:19,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:19,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1770310156, now seen corresponding path program 1 times [2021-10-21 20:15:19,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:19,144 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478001239] [2021-10-21 20:15:19,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:19,144 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:19,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:19,197 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2021-10-21 20:15:19,197 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:19,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478001239] [2021-10-21 20:15:19,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478001239] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:19,198 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:19,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:15:19,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856204570] [2021-10-21 20:15:19,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:15:19,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:19,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:15:19,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:19,200 INFO L87 Difference]: Start difference. First operand 814 states and 1170 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:19,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:15:19,308 INFO L93 Difference]: Finished difference Result 2412 states and 3460 transitions. [2021-10-21 20:15:19,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:15:19,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2021-10-21 20:15:19,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:15:19,321 INFO L225 Difference]: With dead ends: 2412 [2021-10-21 20:15:19,321 INFO L226 Difference]: Without dead ends: 1606 [2021-10-21 20:15:19,323 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:19,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1606 states. [2021-10-21 20:15:19,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1606 to 816. [2021-10-21 20:15:19,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 816 states, 815 states have (on average 1.4380368098159508) internal successors, (1172), 815 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:19,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1172 transitions. [2021-10-21 20:15:19,396 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1172 transitions. Word has length 154 [2021-10-21 20:15:19,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:15:19,397 INFO L470 AbstractCegarLoop]: Abstraction has 816 states and 1172 transitions. [2021-10-21 20:15:19,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:19,398 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1172 transitions. [2021-10-21 20:15:19,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-10-21 20:15:19,401 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:15:19,401 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1] [2021-10-21 20:15:19,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-10-21 20:15:19,402 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:15:19,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:19,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1570716982, now seen corresponding path program 1 times [2021-10-21 20:15:19,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:19,403 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186569767] [2021-10-21 20:15:19,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:19,404 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:19,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:19,474 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2021-10-21 20:15:19,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:19,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186569767] [2021-10-21 20:15:19,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186569767] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:19,475 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:19,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:15:19,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780131399] [2021-10-21 20:15:19,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:15:19,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:19,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:15:19,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:19,478 INFO L87 Difference]: Start difference. First operand 816 states and 1172 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:19,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:15:19,628 INFO L93 Difference]: Finished difference Result 2411 states and 3456 transitions. [2021-10-21 20:15:19,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:15:19,629 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2021-10-21 20:15:19,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:15:19,641 INFO L225 Difference]: With dead ends: 2411 [2021-10-21 20:15:19,642 INFO L226 Difference]: Without dead ends: 1603 [2021-10-21 20:15:19,645 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:19,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1603 states. [2021-10-21 20:15:19,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1603 to 1601. [2021-10-21 20:15:19,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1601 states, 1600 states have (on average 1.4325) internal successors, (2292), 1600 states have internal predecessors, (2292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:19,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1601 states to 1601 states and 2292 transitions. [2021-10-21 20:15:19,813 INFO L78 Accepts]: Start accepts. Automaton has 1601 states and 2292 transitions. Word has length 154 [2021-10-21 20:15:19,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:15:19,814 INFO L470 AbstractCegarLoop]: Abstraction has 1601 states and 2292 transitions. [2021-10-21 20:15:19,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:19,816 INFO L276 IsEmpty]: Start isEmpty. Operand 1601 states and 2292 transitions. [2021-10-21 20:15:19,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-10-21 20:15:19,819 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:15:19,819 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1] [2021-10-21 20:15:19,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-10-21 20:15:19,820 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:15:19,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:19,820 INFO L82 PathProgramCache]: Analyzing trace with hash -362729202, now seen corresponding path program 1 times [2021-10-21 20:15:19,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:19,821 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965714132] [2021-10-21 20:15:19,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:19,821 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:19,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:19,981 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2021-10-21 20:15:19,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:19,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965714132] [2021-10-21 20:15:19,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965714132] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:19,982 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:19,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:15:19,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490731848] [2021-10-21 20:15:19,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:15:19,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:19,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:15:19,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:19,987 INFO L87 Difference]: Start difference. First operand 1601 states and 2292 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:20,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:15:20,267 INFO L93 Difference]: Finished difference Result 4747 states and 6780 transitions. [2021-10-21 20:15:20,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:15:20,268 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 156 [2021-10-21 20:15:20,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:15:20,291 INFO L225 Difference]: With dead ends: 4747 [2021-10-21 20:15:20,291 INFO L226 Difference]: Without dead ends: 3154 [2021-10-21 20:15:20,296 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:20,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3154 states. [2021-10-21 20:15:20,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3154 to 1601. [2021-10-21 20:15:20,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1601 states, 1600 states have (on average 1.43) internal successors, (2288), 1600 states have internal predecessors, (2288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:20,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1601 states to 1601 states and 2288 transitions. [2021-10-21 20:15:20,452 INFO L78 Accepts]: Start accepts. Automaton has 1601 states and 2288 transitions. Word has length 156 [2021-10-21 20:15:20,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:15:20,453 INFO L470 AbstractCegarLoop]: Abstraction has 1601 states and 2288 transitions. [2021-10-21 20:15:20,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:20,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1601 states and 2288 transitions. [2021-10-21 20:15:20,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-10-21 20:15:20,457 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:15:20,457 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1] [2021-10-21 20:15:20,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-10-21 20:15:20,458 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:15:20,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:20,458 INFO L82 PathProgramCache]: Analyzing trace with hash -957693967, now seen corresponding path program 1 times [2021-10-21 20:15:20,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:20,459 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665600757] [2021-10-21 20:15:20,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:20,459 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:20,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:20,514 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-10-21 20:15:20,514 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:20,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665600757] [2021-10-21 20:15:20,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665600757] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:20,515 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:20,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:15:20,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468797568] [2021-10-21 20:15:20,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:15:20,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:20,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:15:20,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:20,518 INFO L87 Difference]: Start difference. First operand 1601 states and 2288 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:20,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:15:20,846 INFO L93 Difference]: Finished difference Result 4783 states and 6836 transitions. [2021-10-21 20:15:20,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:15:20,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 157 [2021-10-21 20:15:20,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:15:20,880 INFO L225 Difference]: With dead ends: 4783 [2021-10-21 20:15:20,889 INFO L226 Difference]: Without dead ends: 3190 [2021-10-21 20:15:20,893 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:20,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3190 states. [2021-10-21 20:15:21,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3190 to 3188. [2021-10-21 20:15:21,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3188 states, 3187 states have (on average 1.4032005020395357) internal successors, (4472), 3187 states have internal predecessors, (4472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:21,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3188 states to 3188 states and 4472 transitions. [2021-10-21 20:15:21,165 INFO L78 Accepts]: Start accepts. Automaton has 3188 states and 4472 transitions. Word has length 157 [2021-10-21 20:15:21,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:15:21,165 INFO L470 AbstractCegarLoop]: Abstraction has 3188 states and 4472 transitions. [2021-10-21 20:15:21,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:21,166 INFO L276 IsEmpty]: Start isEmpty. Operand 3188 states and 4472 transitions. [2021-10-21 20:15:21,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-10-21 20:15:21,170 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:15:21,171 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1] [2021-10-21 20:15:21,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-10-21 20:15:21,171 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:15:21,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:21,172 INFO L82 PathProgramCache]: Analyzing trace with hash -3753809, now seen corresponding path program 1 times [2021-10-21 20:15:21,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:21,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626767193] [2021-10-21 20:15:21,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:21,173 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:21,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:15:21,212 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:15:21,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:15:21,357 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:15:21,357 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-21 20:15:21,358 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:15:21,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-10-21 20:15:21,368 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 20:15:21,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 08:15:21 BoogieIcfgContainer [2021-10-21 20:15:21,549 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 20:15:21,549 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:15:21,550 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:15:21,550 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:15:21,550 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:15:08" (3/4) ... [2021-10-21 20:15:21,553 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-21 20:15:21,740 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2289f88-987b-4263-8a52-ba126d108242/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 20:15:21,741 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:15:21,743 INFO L168 Benchmark]: Toolchain (without parser) took 14806.69 ms. Allocated memory was 100.7 MB in the beginning and 182.5 MB in the end (delta: 81.8 MB). Free memory was 66.3 MB in the beginning and 63.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 85.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:15:21,744 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 100.7 MB. Free memory is still 53.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:15:21,745 INFO L168 Benchmark]: CACSL2BoogieTranslator took 547.57 ms. Allocated memory was 100.7 MB in the beginning and 125.8 MB in the end (delta: 25.2 MB). Free memory was 66.1 MB in the beginning and 95.4 MB in the end (delta: -29.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 20:15:21,745 INFO L168 Benchmark]: Boogie Procedure Inliner took 81.25 ms. Allocated memory is still 125.8 MB. Free memory was 95.4 MB in the beginning and 92.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:15:21,746 INFO L168 Benchmark]: Boogie Preprocessor took 87.05 ms. Allocated memory is still 125.8 MB. Free memory was 92.7 MB in the beginning and 90.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:15:21,746 INFO L168 Benchmark]: RCFGBuilder took 1288.43 ms. Allocated memory is still 125.8 MB. Free memory was 90.0 MB in the beginning and 58.3 MB in the end (delta: 31.7 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. [2021-10-21 20:15:21,752 INFO L168 Benchmark]: TraceAbstraction took 12600.49 ms. Allocated memory was 125.8 MB in the beginning and 182.5 MB in the end (delta: 56.6 MB). Free memory was 57.7 MB in the beginning and 81.1 MB in the end (delta: -23.4 MB). Peak memory consumption was 33.8 MB. Max. memory is 16.1 GB. [2021-10-21 20:15:21,753 INFO L168 Benchmark]: Witness Printer took 191.54 ms. Allocated memory is still 182.5 MB. Free memory was 81.1 MB in the beginning and 63.3 MB in the end (delta: 17.8 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-21 20:15:21,755 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 100.7 MB. Free memory is still 53.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 547.57 ms. Allocated memory was 100.7 MB in the beginning and 125.8 MB in the end (delta: 25.2 MB). Free memory was 66.1 MB in the beginning and 95.4 MB in the end (delta: -29.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 81.25 ms. Allocated memory is still 125.8 MB. Free memory was 95.4 MB in the beginning and 92.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 87.05 ms. Allocated memory is still 125.8 MB. Free memory was 92.7 MB in the beginning and 90.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1288.43 ms. Allocated memory is still 125.8 MB. Free memory was 90.0 MB in the beginning and 58.3 MB in the end (delta: 31.7 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 12600.49 ms. Allocated memory was 125.8 MB in the beginning and 182.5 MB in the end (delta: 56.6 MB). Free memory was 57.7 MB in the beginning and 81.1 MB in the end (delta: -23.4 MB). Peak memory consumption was 33.8 MB. Max. memory is 16.1 GB. * Witness Printer took 191.54 ms. Allocated memory is still 182.5 MB. Free memory was 81.1 MB in the beginning and 63.3 MB in the end (delta: 17.8 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 709]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L714] int s ; [L715] int tmp ; [L719] s = 8464 [L24] int s__info_callback = __VERIFIER_nondet_int() ; [L25] int s__in_handshake = __VERIFIER_nondet_int() ; [L26] int s__state ; [L27] int s__new_session ; [L28] int s__server ; [L29] int s__version = __VERIFIER_nondet_int() ; [L30] int s__type ; [L31] int s__init_num ; [L32] int s__hit = __VERIFIER_nondet_int() ; [L33] int s__rwstate ; [L34] int s__init_buf___0 = 1; [L35] int s__debug = __VERIFIER_nondet_int() ; [L36] int s__shutdown ; [L37] int s__cert = __VERIFIER_nondet_int() ; [L38] int s__options = __VERIFIER_nondet_int() ; [L39] int s__verify_mode = __VERIFIER_nondet_int() ; [L40] int s__session__peer = __VERIFIER_nondet_int() ; [L41] int s__cert__pkeys__AT0__privatekey = __VERIFIER_nondet_int() ; [L42] int s__ctx__info_callback = __VERIFIER_nondet_int() ; [L43] int s__ctx__stats__sess_accept_renegotiate = __VERIFIER_nondet_int() ; [L44] int s__ctx__stats__sess_accept = __VERIFIER_nondet_int() ; [L45] int s__ctx__stats__sess_accept_good = __VERIFIER_nondet_int() ; [L46] int s__s3__tmp__cert_request ; [L47] int s__s3__tmp__reuse_message ; [L48] int s__s3__tmp__use_rsa_tmp ; [L49] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int() ; [L50] int s__s3__tmp__new_cipher__algorithms ; [L51] int s__s3__tmp__next_state___0 ; [L52] int s__s3__tmp__new_cipher__algo_strength ; [L53] int s__session__cipher ; [L54] int buf ; [L55] unsigned long l ; [L56] unsigned long Time ; [L57] unsigned long tmp ; [L58] int cb ; [L59] long num1 = __VERIFIER_nondet_long() ; [L60] int ret ; [L61] int new_state ; [L62] int state ; [L63] int skip ; [L64] int got_new_session ; [L65] int tmp___1 = __VERIFIER_nondet_int() ; [L66] int tmp___2 = __VERIFIER_nondet_int() ; [L67] int tmp___3 = __VERIFIER_nondet_int() ; [L68] int tmp___4 = __VERIFIER_nondet_int() ; [L69] int tmp___5 = __VERIFIER_nondet_int() ; [L70] int tmp___6 = __VERIFIER_nondet_int() ; [L71] int tmp___7 ; [L72] long tmp___8 = __VERIFIER_nondet_long() ; [L73] int tmp___9 = __VERIFIER_nondet_int() ; [L74] int tmp___10 = __VERIFIER_nondet_int() ; [L75] int blastFlag ; [L76] int __cil_tmp55 ; [L77] unsigned long __cil_tmp56 ; [L78] unsigned long __cil_tmp57 ; [L79] unsigned long __cil_tmp58 ; [L80] unsigned long __cil_tmp59 ; [L81] int __cil_tmp60 ; [L82] unsigned long __cil_tmp61 = __VERIFIER_nondet_ulong() ; [L86] s__state = initial_state [L87] blastFlag = 0 [L88] tmp = __VERIFIER_nondet_int() [L89] Time = tmp [L90] cb = 0 [L91] ret = -1 [L92] skip = 0 [L93] got_new_session = 0 [L94] COND TRUE s__info_callback != 0 [L95] cb = s__info_callback [L101] s__in_handshake ++ [L102] COND FALSE !(tmp___1 + 12288) [L107] COND FALSE !(s__cert == 0) [L111] COND TRUE 1 [L113] state = s__state [L114] COND FALSE !(s__state == 12292) [L117] COND FALSE !(s__state == 16384) [L120] COND FALSE !(s__state == 8192) [L123] COND FALSE !(s__state == 24576) [L126] COND FALSE !(s__state == 8195) [L129] COND FALSE !(s__state == 8480) [L132] COND FALSE !(s__state == 8481) [L135] COND FALSE !(s__state == 8482) [L138] COND TRUE s__state == 8464 [L284] s__shutdown = 0 [L285] ret = __VERIFIER_nondet_int() [L286] COND TRUE blastFlag == 0 [L287] blastFlag = 1 [L289] COND FALSE !(ret <= 0) [L292] got_new_session = 1 [L293] s__state = 8496 [L294] s__init_num = 0 [L663] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L664] COND FALSE !(! s__s3__tmp__reuse_message) [L698] skip = 0 [L111] COND TRUE 1 [L113] state = s__state [L114] COND FALSE !(s__state == 12292) [L117] COND FALSE !(s__state == 16384) [L120] COND FALSE !(s__state == 8192) [L123] COND FALSE !(s__state == 24576) [L126] COND FALSE !(s__state == 8195) [L129] COND FALSE !(s__state == 8480) [L132] COND FALSE !(s__state == 8481) [L135] COND FALSE !(s__state == 8482) [L138] COND FALSE !(s__state == 8464) [L141] COND FALSE !(s__state == 8465) [L144] COND FALSE !(s__state == 8466) [L147] COND TRUE s__state == 8496 [L298] ret = __VERIFIER_nondet_int() [L299] COND TRUE blastFlag == 1 [L300] blastFlag = 2 [L302] COND FALSE !(ret <= 0) [L305] COND FALSE !(\read(s__hit)) [L308] s__state = 8512 [L310] s__init_num = 0 [L663] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L664] COND FALSE !(! s__s3__tmp__reuse_message) [L698] skip = 0 [L111] COND TRUE 1 [L113] state = s__state [L114] COND FALSE !(s__state == 12292) [L117] COND FALSE !(s__state == 16384) [L120] COND FALSE !(s__state == 8192) [L123] COND FALSE !(s__state == 24576) [L126] COND FALSE !(s__state == 8195) [L129] COND FALSE !(s__state == 8480) [L132] COND FALSE !(s__state == 8481) [L135] COND FALSE !(s__state == 8482) [L138] COND FALSE !(s__state == 8464) [L141] COND FALSE !(s__state == 8465) [L144] COND FALSE !(s__state == 8466) [L147] COND FALSE !(s__state == 8496) [L150] COND FALSE !(s__state == 8497) [L153] COND TRUE s__state == 8512 [L315] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L316] __cil_tmp56 = (unsigned long )s__s3__tmp__new_cipher__algorithms [L317] COND TRUE __cil_tmp56 + 256UL [L318] __cil_tmp56 = 256345 [L319] skip = 1 [L330] s__state = 8528 [L331] s__init_num = 0 [L663] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L664] COND FALSE !(! s__s3__tmp__reuse_message) [L698] skip = 0 [L111] COND TRUE 1 [L113] state = s__state [L114] COND FALSE !(s__state == 12292) [L117] COND FALSE !(s__state == 16384) [L120] COND FALSE !(s__state == 8192) [L123] COND FALSE !(s__state == 24576) [L126] COND FALSE !(s__state == 8195) [L129] COND FALSE !(s__state == 8480) [L132] COND FALSE !(s__state == 8481) [L135] COND FALSE !(s__state == 8482) [L138] COND FALSE !(s__state == 8464) [L141] COND FALSE !(s__state == 8465) [L144] COND FALSE !(s__state == 8466) [L147] COND FALSE !(s__state == 8496) [L150] COND FALSE !(s__state == 8497) [L153] COND FALSE !(s__state == 8512) [L156] COND FALSE !(s__state == 8513) [L159] COND TRUE s__state == 8528 [L335] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L336] l = (unsigned long )s__s3__tmp__new_cipher__algorithms [L338] __cil_tmp57 = (unsigned long )s__options [L339] COND TRUE __cil_tmp57 + 2097152UL [L340] s__s3__tmp__use_rsa_tmp = 1 [L345] COND TRUE \read(s__s3__tmp__use_rsa_tmp) [L373] ret = __VERIFIER_nondet_int() [L374] COND FALSE !(blastFlag == 3) [L377] COND FALSE !(ret <= 0) [L394] s__state = 8544 [L395] s__init_num = 0 [L663] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L664] COND FALSE !(! s__s3__tmp__reuse_message) [L698] skip = 0 [L111] COND TRUE 1 [L113] state = s__state [L114] COND FALSE !(s__state == 12292) [L117] COND FALSE !(s__state == 16384) [L120] COND FALSE !(s__state == 8192) [L123] COND FALSE !(s__state == 24576) [L126] COND FALSE !(s__state == 8195) [L129] COND FALSE !(s__state == 8480) [L132] COND FALSE !(s__state == 8481) [L135] COND FALSE !(s__state == 8482) [L138] COND FALSE !(s__state == 8464) [L141] COND FALSE !(s__state == 8465) [L144] COND FALSE !(s__state == 8466) [L147] COND FALSE !(s__state == 8496) [L150] COND FALSE !(s__state == 8497) [L153] COND FALSE !(s__state == 8512) [L156] COND FALSE !(s__state == 8513) [L159] COND FALSE !(s__state == 8528) [L162] COND FALSE !(s__state == 8529) [L165] COND TRUE s__state == 8544 [L399] COND TRUE s__verify_mode + 1 [L400] COND TRUE s__session__peer != 0 [L401] COND TRUE s__verify_mode + 4 [L402] s__verify_mode = 123 [L403] skip = 1 [L404] s__s3__tmp__cert_request = 0 [L405] s__state = 8560 [L663] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L664] COND FALSE !(! s__s3__tmp__reuse_message) [L698] skip = 0 [L111] COND TRUE 1 [L113] state = s__state [L114] COND FALSE !(s__state == 12292) [L117] COND FALSE !(s__state == 16384) [L120] COND FALSE !(s__state == 8192) [L123] COND FALSE !(s__state == 24576) [L126] COND FALSE !(s__state == 8195) [L129] COND FALSE !(s__state == 8480) [L132] COND FALSE !(s__state == 8481) [L135] COND FALSE !(s__state == 8482) [L138] COND FALSE !(s__state == 8464) [L141] COND FALSE !(s__state == 8465) [L144] COND FALSE !(s__state == 8466) [L147] COND FALSE !(s__state == 8496) [L150] COND FALSE !(s__state == 8497) [L153] COND FALSE !(s__state == 8512) [L156] COND FALSE !(s__state == 8513) [L159] COND FALSE !(s__state == 8528) [L162] COND FALSE !(s__state == 8529) [L165] COND FALSE !(s__state == 8544) [L168] COND FALSE !(s__state == 8545) [L171] COND TRUE s__state == 8560 [L449] ret = __VERIFIER_nondet_int() [L450] COND FALSE !(ret <= 0) [L453] s__s3__tmp__next_state___0 = 8576 [L454] s__state = 8448 [L455] s__init_num = 0 [L663] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L664] COND TRUE ! s__s3__tmp__reuse_message [L665] COND TRUE ! skip [L666] COND TRUE state == 8560 [L667] COND TRUE s__state == 8448 [L668] COND TRUE s__verify_mode != -1 [L669] COND TRUE s__verify_mode != -2 [L670] COND TRUE __cil_tmp61 != 9021 [L671] COND TRUE __cil_tmp58 != 4294967294 [L672] COND TRUE blastFlag != 4 [L673] COND TRUE tmp___7 != 1024 [L709] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 167 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 12322.7ms, OverallIterations: 35, TraceHistogramMax: 6, EmptinessCheckTime: 122.7ms, AutomataDifference: 7123.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 23.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 7183 SDtfs, 6874 SDslu, 1823 SDs, 0 SdLazy, 2872 SolverSat, 1350 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3416.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 104 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 101.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=3188occurred in iteration=34, InterpolantAutomatonStates: 104, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1963.3ms AutomataMinimizationTime, 34 MinimizatonAttempts, 2673 StatesRemovedByMinimization, 32 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 151.2ms SsaConstructionTime, 631.0ms SatisfiabilityAnalysisTime, 1569.8ms InterpolantComputationTime, 3216 NumberOfCodeBlocks, 3216 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 3025 ConstructedInterpolants, 0 QuantifiedInterpolants, 5479 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 34 InterpolantComputations, 34 PerfectInterpolantSequences, 2752/2752 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! [2021-10-21 20:15:21,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2289f88-987b-4263-8a52-ba126d108242/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...