./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl-simplified/s3_clnt_4.cil-2.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_11fd2049-1f19-46c8-a123-46372ff32f34/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11fd2049-1f19-46c8-a123-46372ff32f34/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_11fd2049-1f19-46c8-a123-46372ff32f34/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11fd2049-1f19-46c8-a123-46372ff32f34/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/openssl-simplified/s3_clnt_4.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11fd2049-1f19-46c8-a123-46372ff32f34/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_11fd2049-1f19-46c8-a123-46372ff32f34/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 fff9cde623383cf9e2df28e9a74a552535a697b1d30f241b8170c5e4baf125a5 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 19:31:01,031 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:31:01,034 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:31:01,071 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:31:01,072 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:31:01,074 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:31:01,076 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:31:01,079 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:31:01,081 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:31:01,083 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:31:01,084 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:31:01,086 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:31:01,087 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:31:01,089 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:31:01,091 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:31:01,093 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:31:01,095 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:31:01,096 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:31:01,099 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:31:01,102 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:31:01,105 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:31:01,107 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:31:01,109 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:31:01,110 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:31:01,115 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:31:01,116 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:31:01,117 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:31:01,118 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:31:01,119 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:31:01,121 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:31:01,121 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:31:01,123 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:31:01,124 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:31:01,126 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:31:01,127 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:31:01,128 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:31:01,129 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:31:01,129 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:31:01,130 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:31:01,131 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:31:01,132 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:31:01,133 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11fd2049-1f19-46c8-a123-46372ff32f34/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 19:31:01,165 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:31:01,165 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:31:01,166 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:31:01,166 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:31:01,168 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:31:01,168 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:31:01,168 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:31:01,169 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:31:01,169 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:31:01,169 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:31:01,170 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:31:01,170 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:31:01,170 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 19:31:01,171 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:31:01,171 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 19:31:01,171 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:31:01,171 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:31:01,172 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:31:01,172 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 19:31:01,172 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:31:01,173 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:31:01,173 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:31:01,173 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:31:01,174 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:31:01,174 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:31:01,174 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 19:31:01,175 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:31:01,175 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 19:31:01,175 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 19:31:01,175 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 19:31:01,176 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 19:31:01,176 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:31:01,176 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_11fd2049-1f19-46c8-a123-46372ff32f34/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11fd2049-1f19-46c8-a123-46372ff32f34/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fff9cde623383cf9e2df28e9a74a552535a697b1d30f241b8170c5e4baf125a5 [2021-10-21 19:31:01,574 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:31:01,600 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:31:01,604 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:31:01,605 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:31:01,606 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:31:01,608 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11fd2049-1f19-46c8-a123-46372ff32f34/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/openssl-simplified/s3_clnt_4.cil-2.c [2021-10-21 19:31:01,687 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11fd2049-1f19-46c8-a123-46372ff32f34/bin/uautomizer-j4sWxH34Be/data/de99e49f1/c8aad2886cee4ea79ebd6e36a6b02af1/FLAGf6c9c9001 [2021-10-21 19:31:02,343 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:31:02,345 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11fd2049-1f19-46c8-a123-46372ff32f34/sv-benchmarks/c/openssl-simplified/s3_clnt_4.cil-2.c [2021-10-21 19:31:02,374 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11fd2049-1f19-46c8-a123-46372ff32f34/bin/uautomizer-j4sWxH34Be/data/de99e49f1/c8aad2886cee4ea79ebd6e36a6b02af1/FLAGf6c9c9001 [2021-10-21 19:31:02,650 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11fd2049-1f19-46c8-a123-46372ff32f34/bin/uautomizer-j4sWxH34Be/data/de99e49f1/c8aad2886cee4ea79ebd6e36a6b02af1 [2021-10-21 19:31:02,653 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:31:02,657 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:31:02,665 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:31:02,665 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:31:02,670 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:31:02,672 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:31:02" (1/1) ... [2021-10-21 19:31:02,674 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e2e91de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:31:02, skipping insertion in model container [2021-10-21 19:31:02,675 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:31:02" (1/1) ... [2021-10-21 19:31:02,684 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:31:02,761 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:31:03,136 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_11fd2049-1f19-46c8-a123-46372ff32f34/sv-benchmarks/c/openssl-simplified/s3_clnt_4.cil-2.c[35909,35922] [2021-10-21 19:31:03,146 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:31:03,167 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:31:03,252 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_11fd2049-1f19-46c8-a123-46372ff32f34/sv-benchmarks/c/openssl-simplified/s3_clnt_4.cil-2.c[35909,35922] [2021-10-21 19:31:03,256 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:31:03,273 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:31:03,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:31:03 WrapperNode [2021-10-21 19:31:03,278 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:31:03,280 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:31:03,282 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:31:03,282 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:31:03,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:31:03" (1/1) ... [2021-10-21 19:31:03,328 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:31:03" (1/1) ... [2021-10-21 19:31:03,387 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:31:03,400 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:31:03,400 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:31:03,401 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:31:03,412 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:31:03" (1/1) ... [2021-10-21 19:31:03,412 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:31:03" (1/1) ... [2021-10-21 19:31:03,424 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:31:03" (1/1) ... [2021-10-21 19:31:03,437 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:31:03" (1/1) ... [2021-10-21 19:31:03,448 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:31:03" (1/1) ... [2021-10-21 19:31:03,465 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:31:03" (1/1) ... [2021-10-21 19:31:03,480 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:31:03" (1/1) ... [2021-10-21 19:31:03,485 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:31:03,486 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:31:03,487 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:31:03,487 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:31:03,495 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:31:03" (1/1) ... [2021-10-21 19:31:03,506 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:31:03,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11fd2049-1f19-46c8-a123-46372ff32f34/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:31:03,539 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11fd2049-1f19-46c8-a123-46372ff32f34/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:31:03,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11fd2049-1f19-46c8-a123-46372ff32f34/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:31:03,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:31:03,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:31:03,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:31:03,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:31:03,778 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-21 19:31:04,391 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2021-10-21 19:31:04,392 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2021-10-21 19:31:04,406 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:31:04,407 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-21 19:31:04,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:31:04 BoogieIcfgContainer [2021-10-21 19:31:04,409 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:31:04,435 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:31:04,436 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:31:04,441 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:31:04,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:31:02" (1/3) ... [2021-10-21 19:31:04,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@effdc4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:31:04, skipping insertion in model container [2021-10-21 19:31:04,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:31:03" (2/3) ... [2021-10-21 19:31:04,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@effdc4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:31:04, skipping insertion in model container [2021-10-21 19:31:04,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:31:04" (3/3) ... [2021-10-21 19:31:04,445 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt_4.cil-2.c [2021-10-21 19:31:04,460 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:31:04,461 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 19:31:04,556 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:31:04,564 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 19:31:04,564 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-21 19:31:04,597 INFO L276 IsEmpty]: Start isEmpty. Operand has 128 states, 126 states have (on average 1.7142857142857142) internal successors, (216), 127 states have internal predecessors, (216), 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 19:31:04,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-21 19:31:04,607 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:31:04,608 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] [2021-10-21 19:31:04,608 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:31:04,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:31:04,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1457695038, now seen corresponding path program 1 times [2021-10-21 19:31:04,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:31:04,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920844808] [2021-10-21 19:31:04,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:31:04,643 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:31:04,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:31:04,897 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 19:31:04,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:31:04,898 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920844808] [2021-10-21 19:31:04,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920844808] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:31:04,900 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:31:04,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:31:04,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624235660] [2021-10-21 19:31:04,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:31:04,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:31:04,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:31:04,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:31:04,928 INFO L87 Difference]: Start difference. First operand has 128 states, 126 states have (on average 1.7142857142857142) internal successors, (216), 127 states have internal predecessors, (216), 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 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 19:31:05,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:31:05,106 INFO L93 Difference]: Finished difference Result 252 states and 427 transitions. [2021-10-21 19:31:05,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:31:05,108 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 24 [2021-10-21 19:31:05,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:31:05,127 INFO L225 Difference]: With dead ends: 252 [2021-10-21 19:31:05,127 INFO L226 Difference]: Without dead ends: 115 [2021-10-21 19:31:05,133 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:31:05,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-10-21 19:31:05,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2021-10-21 19:31:05,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.5087719298245614) internal successors, (172), 114 states have internal predecessors, (172), 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 19:31:05,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 172 transitions. [2021-10-21 19:31:05,216 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 172 transitions. Word has length 24 [2021-10-21 19:31:05,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:31:05,217 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 172 transitions. [2021-10-21 19:31:05,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 19:31:05,217 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 172 transitions. [2021-10-21 19:31:05,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-21 19:31:05,219 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:31:05,219 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:31:05,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 19:31:05,220 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:31:05,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:31:05,220 INFO L82 PathProgramCache]: Analyzing trace with hash 561717339, now seen corresponding path program 1 times [2021-10-21 19:31:05,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:31:05,221 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243794937] [2021-10-21 19:31:05,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:31:05,221 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:31:05,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:31:05,403 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:31:05,403 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:31:05,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243794937] [2021-10-21 19:31:05,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243794937] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:31:05,404 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:31:05,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:31:05,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893762236] [2021-10-21 19:31:05,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:31:05,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:31:05,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:31:05,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:31:05,409 INFO L87 Difference]: Start difference. First operand 115 states and 172 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 19:31:05,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:31:05,641 INFO L93 Difference]: Finished difference Result 238 states and 360 transitions. [2021-10-21 19:31:05,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:31:05,642 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 37 [2021-10-21 19:31:05,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:31:05,645 INFO L225 Difference]: With dead ends: 238 [2021-10-21 19:31:05,645 INFO L226 Difference]: Without dead ends: 133 [2021-10-21 19:31:05,647 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:31:05,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-10-21 19:31:05,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 130. [2021-10-21 19:31:05,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 1.4883720930232558) internal successors, (192), 129 states have internal predecessors, (192), 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 19:31:05,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 192 transitions. [2021-10-21 19:31:05,662 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 192 transitions. Word has length 37 [2021-10-21 19:31:05,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:31:05,663 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 192 transitions. [2021-10-21 19:31:05,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 19:31:05,664 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 192 transitions. [2021-10-21 19:31:05,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-21 19:31:05,667 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:31:05,667 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:31:05,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 19:31:05,668 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:31:05,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:31:05,669 INFO L82 PathProgramCache]: Analyzing trace with hash 356453796, now seen corresponding path program 1 times [2021-10-21 19:31:05,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:31:05,670 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614444177] [2021-10-21 19:31:05,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:31:05,670 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:31:05,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:31:05,848 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-21 19:31:05,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:31:05,849 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614444177] [2021-10-21 19:31:05,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614444177] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:31:05,850 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:31:05,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:31:05,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919944151] [2021-10-21 19:31:05,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:31:05,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:31:05,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:31:05,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:31:05,853 INFO L87 Difference]: Start difference. First operand 130 states and 192 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 19:31:06,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:31:06,055 INFO L93 Difference]: Finished difference Result 271 states and 406 transitions. [2021-10-21 19:31:06,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:31:06,056 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 51 [2021-10-21 19:31:06,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:31:06,059 INFO L225 Difference]: With dead ends: 271 [2021-10-21 19:31:06,066 INFO L226 Difference]: Without dead ends: 151 [2021-10-21 19:31:06,067 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:31:06,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-10-21 19:31:06,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 147. [2021-10-21 19:31:06,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.4657534246575343) internal successors, (214), 146 states have internal predecessors, (214), 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 19:31:06,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 214 transitions. [2021-10-21 19:31:06,093 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 214 transitions. Word has length 51 [2021-10-21 19:31:06,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:31:06,094 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 214 transitions. [2021-10-21 19:31:06,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 19:31:06,095 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 214 transitions. [2021-10-21 19:31:06,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-10-21 19:31:06,098 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:31:06,098 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:31:06,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-21 19:31:06,099 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:31:06,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:31:06,100 INFO L82 PathProgramCache]: Analyzing trace with hash -1231505257, now seen corresponding path program 1 times [2021-10-21 19:31:06,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:31:06,101 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143101007] [2021-10-21 19:31:06,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:31:06,101 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:31:06,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:31:06,223 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-21 19:31:06,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:31:06,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143101007] [2021-10-21 19:31:06,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143101007] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:31:06,225 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:31:06,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:31:06,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224046142] [2021-10-21 19:31:06,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:31:06,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:31:06,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:31:06,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:31:06,228 INFO L87 Difference]: Start difference. First operand 147 states and 214 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 19:31:06,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:31:06,438 INFO L93 Difference]: Finished difference Result 335 states and 503 transitions. [2021-10-21 19:31:06,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:31:06,439 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 68 [2021-10-21 19:31:06,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:31:06,442 INFO L225 Difference]: With dead ends: 335 [2021-10-21 19:31:06,443 INFO L226 Difference]: Without dead ends: 197 [2021-10-21 19:31:06,444 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 19:31:06,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-10-21 19:31:06,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 188. [2021-10-21 19:31:06,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 1.411764705882353) internal successors, (264), 187 states have internal predecessors, (264), 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 19:31:06,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 264 transitions. [2021-10-21 19:31:06,461 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 264 transitions. Word has length 68 [2021-10-21 19:31:06,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:31:06,462 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 264 transitions. [2021-10-21 19:31:06,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 19:31:06,463 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 264 transitions. [2021-10-21 19:31:06,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-10-21 19:31:06,472 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:31:06,472 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:31:06,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-21 19:31:06,473 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:31:06,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:31:06,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1258023705, now seen corresponding path program 1 times [2021-10-21 19:31:06,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:31:06,475 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429174893] [2021-10-21 19:31:06,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:31:06,475 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:31:06,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:31:06,588 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-21 19:31:06,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:31:06,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429174893] [2021-10-21 19:31:06,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429174893] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:31:06,601 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:31:06,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:31:06,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830794908] [2021-10-21 19:31:06,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:31:06,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:31:06,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:31:06,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:31:06,604 INFO L87 Difference]: Start difference. First operand 188 states and 264 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 19:31:06,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:31:06,845 INFO L93 Difference]: Finished difference Result 391 states and 557 transitions. [2021-10-21 19:31:06,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:31:06,846 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 68 [2021-10-21 19:31:06,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:31:06,851 INFO L225 Difference]: With dead ends: 391 [2021-10-21 19:31:06,851 INFO L226 Difference]: Without dead ends: 213 [2021-10-21 19:31:06,854 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:31:06,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-10-21 19:31:06,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 207. [2021-10-21 19:31:06,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.3980582524271845) internal successors, (288), 206 states have internal predecessors, (288), 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 19:31:06,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 288 transitions. [2021-10-21 19:31:06,882 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 288 transitions. Word has length 68 [2021-10-21 19:31:06,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:31:06,882 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 288 transitions. [2021-10-21 19:31:06,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 19:31:06,883 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 288 transitions. [2021-10-21 19:31:06,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-21 19:31:06,896 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:31:06,896 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:31:06,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-21 19:31:06,897 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:31:06,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:31:06,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1378844437, now seen corresponding path program 1 times [2021-10-21 19:31:06,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:31:06,898 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056337810] [2021-10-21 19:31:06,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:31:06,898 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:31:06,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:31:07,044 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-10-21 19:31:07,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:31:07,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056337810] [2021-10-21 19:31:07,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056337810] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:31:07,046 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:31:07,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:31:07,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373097559] [2021-10-21 19:31:07,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:31:07,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:31:07,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:31:07,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:31:07,048 INFO L87 Difference]: Start difference. First operand 207 states and 288 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 19:31:07,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:31:07,175 INFO L93 Difference]: Finished difference Result 428 states and 604 transitions. [2021-10-21 19:31:07,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:31:07,182 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 19:31:07,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:31:07,186 INFO L225 Difference]: With dead ends: 428 [2021-10-21 19:31:07,187 INFO L226 Difference]: Without dead ends: 231 [2021-10-21 19:31:07,187 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:31:07,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-10-21 19:31:07,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 228. [2021-10-21 19:31:07,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 227 states have (on average 1.3832599118942732) internal successors, (314), 227 states have internal predecessors, (314), 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 19:31:07,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 314 transitions. [2021-10-21 19:31:07,212 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 314 transitions. Word has length 85 [2021-10-21 19:31:07,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:31:07,212 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 314 transitions. [2021-10-21 19:31:07,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 19:31:07,213 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 314 transitions. [2021-10-21 19:31:07,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-21 19:31:07,216 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:31:07,216 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:31:07,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-21 19:31:07,217 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:31:07,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:31:07,218 INFO L82 PathProgramCache]: Analyzing trace with hash 311084899, now seen corresponding path program 1 times [2021-10-21 19:31:07,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:31:07,218 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670314255] [2021-10-21 19:31:07,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:31:07,219 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:31:07,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:31:07,287 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-21 19:31:07,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:31:07,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670314255] [2021-10-21 19:31:07,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670314255] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:31:07,288 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:31:07,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:31:07,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58505212] [2021-10-21 19:31:07,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:31:07,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:31:07,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:31:07,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:31:07,291 INFO L87 Difference]: Start difference. First operand 228 states and 314 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 19:31:07,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:31:07,343 INFO L93 Difference]: Finished difference Result 660 states and 910 transitions. [2021-10-21 19:31:07,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:31:07,344 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 105 [2021-10-21 19:31:07,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:31:07,350 INFO L225 Difference]: With dead ends: 660 [2021-10-21 19:31:07,350 INFO L226 Difference]: Without dead ends: 442 [2021-10-21 19:31:07,352 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 19:31:07,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2021-10-21 19:31:07,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 442. [2021-10-21 19:31:07,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 441 states have (on average 1.3718820861678005) internal successors, (605), 441 states have internal predecessors, (605), 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 19:31:07,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 605 transitions. [2021-10-21 19:31:07,382 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 605 transitions. Word has length 105 [2021-10-21 19:31:07,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:31:07,382 INFO L470 AbstractCegarLoop]: Abstraction has 442 states and 605 transitions. [2021-10-21 19:31:07,383 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 19:31:07,383 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 605 transitions. [2021-10-21 19:31:07,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-21 19:31:07,393 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:31:07,393 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:31:07,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-21 19:31:07,394 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:31:07,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:31:07,396 INFO L82 PathProgramCache]: Analyzing trace with hash 990357153, now seen corresponding path program 1 times [2021-10-21 19:31:07,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:31:07,397 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019250392] [2021-10-21 19:31:07,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:31:07,397 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:31:07,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:31:07,515 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-10-21 19:31:07,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:31:07,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019250392] [2021-10-21 19:31:07,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019250392] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:31:07,516 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:31:07,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:31:07,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673579153] [2021-10-21 19:31:07,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:31:07,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:31:07,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:31:07,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:31:07,519 INFO L87 Difference]: Start difference. First operand 442 states and 605 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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 19:31:07,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:31:07,554 INFO L93 Difference]: Finished difference Result 895 states and 1224 transitions. [2021-10-21 19:31:07,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:31:07,554 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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 105 [2021-10-21 19:31:07,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:31:07,558 INFO L225 Difference]: With dead ends: 895 [2021-10-21 19:31:07,559 INFO L226 Difference]: Without dead ends: 463 [2021-10-21 19:31:07,560 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 19:31:07,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2021-10-21 19:31:07,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 463. [2021-10-21 19:31:07,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 462 states have (on average 1.367965367965368) internal successors, (632), 462 states have internal predecessors, (632), 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 19:31:07,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 632 transitions. [2021-10-21 19:31:07,579 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 632 transitions. Word has length 105 [2021-10-21 19:31:07,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:31:07,580 INFO L470 AbstractCegarLoop]: Abstraction has 463 states and 632 transitions. [2021-10-21 19:31:07,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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 19:31:07,580 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 632 transitions. [2021-10-21 19:31:07,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-21 19:31:07,583 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:31:07,583 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:31:07,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-21 19:31:07,583 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:31:07,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:31:07,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1829390815, now seen corresponding path program 1 times [2021-10-21 19:31:07,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:31:07,585 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158974069] [2021-10-21 19:31:07,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:31:07,585 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:31:07,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:31:07,647 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-10-21 19:31:07,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:31:07,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158974069] [2021-10-21 19:31:07,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158974069] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:31:07,649 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:31:07,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:31:07,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557823843] [2021-10-21 19:31:07,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:31:07,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:31:07,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:31:07,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:31:07,659 INFO L87 Difference]: Start difference. First operand 463 states and 632 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 19:31:07,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:31:07,690 INFO L93 Difference]: Finished difference Result 943 states and 1285 transitions. [2021-10-21 19:31:07,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:31:07,691 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 105 [2021-10-21 19:31:07,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:31:07,695 INFO L225 Difference]: With dead ends: 943 [2021-10-21 19:31:07,697 INFO L226 Difference]: Without dead ends: 490 [2021-10-21 19:31:07,703 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:31:07,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2021-10-21 19:31:07,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 490. [2021-10-21 19:31:07,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 489 states have (on average 1.361963190184049) internal successors, (666), 489 states have internal predecessors, (666), 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 19:31:07,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 666 transitions. [2021-10-21 19:31:07,723 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 666 transitions. Word has length 105 [2021-10-21 19:31:07,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:31:07,723 INFO L470 AbstractCegarLoop]: Abstraction has 490 states and 666 transitions. [2021-10-21 19:31:07,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 19:31:07,724 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 666 transitions. [2021-10-21 19:31:07,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-10-21 19:31:07,726 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:31:07,727 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:31:07,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-21 19:31:07,727 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:31:07,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:31:07,728 INFO L82 PathProgramCache]: Analyzing trace with hash -915547054, now seen corresponding path program 1 times [2021-10-21 19:31:07,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:31:07,731 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599953174] [2021-10-21 19:31:07,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:31:07,731 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:31:07,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:31:07,806 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:31:07,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:31:07,971 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:31:07,971 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-21 19:31:07,973 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:31:07,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-21 19:31:07,983 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:31:08,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:31:08 BoogieIcfgContainer [2021-10-21 19:31:08,136 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:31:08,137 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:31:08,137 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:31:08,138 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:31:08,138 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:31:04" (3/4) ... [2021-10-21 19:31:08,140 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-21 19:31:08,297 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11fd2049-1f19-46c8-a123-46372ff32f34/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 19:31:08,298 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:31:08,302 INFO L168 Benchmark]: Toolchain (without parser) took 5641.48 ms. Allocated memory was 102.8 MB in the beginning and 148.9 MB in the end (delta: 46.1 MB). Free memory was 65.6 MB in the beginning and 91.4 MB in the end (delta: -25.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 16.1 GB. [2021-10-21 19:31:08,303 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 102.8 MB. Free memory was 82.5 MB in the beginning and 82.4 MB in the end (delta: 60.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:31:08,304 INFO L168 Benchmark]: CACSL2BoogieTranslator took 613.75 ms. Allocated memory is still 102.8 MB. Free memory was 65.4 MB in the beginning and 74.5 MB in the end (delta: -9.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-21 19:31:08,305 INFO L168 Benchmark]: Boogie Procedure Inliner took 119.54 ms. Allocated memory is still 102.8 MB. Free memory was 74.5 MB in the beginning and 71.6 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:31:08,305 INFO L168 Benchmark]: Boogie Preprocessor took 85.51 ms. Allocated memory is still 102.8 MB. Free memory was 71.6 MB in the beginning and 69.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:31:08,306 INFO L168 Benchmark]: RCFGBuilder took 923.22 ms. Allocated memory is still 102.8 MB. Free memory was 69.7 MB in the beginning and 42.1 MB in the end (delta: 27.6 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2021-10-21 19:31:08,306 INFO L168 Benchmark]: TraceAbstraction took 3700.88 ms. Allocated memory was 102.8 MB in the beginning and 148.9 MB in the end (delta: 46.1 MB). Free memory was 78.1 MB in the beginning and 105.0 MB in the end (delta: -26.9 MB). Peak memory consumption was 85.6 MB. Max. memory is 16.1 GB. [2021-10-21 19:31:08,307 INFO L168 Benchmark]: Witness Printer took 160.66 ms. Allocated memory is still 148.9 MB. Free memory was 105.0 MB in the beginning and 91.4 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-21 19:31:08,309 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 102.8 MB. Free memory was 82.5 MB in the beginning and 82.4 MB in the end (delta: 60.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 613.75 ms. Allocated memory is still 102.8 MB. Free memory was 65.4 MB in the beginning and 74.5 MB in the end (delta: -9.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 119.54 ms. Allocated memory is still 102.8 MB. Free memory was 74.5 MB in the beginning and 71.6 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 85.51 ms. Allocated memory is still 102.8 MB. Free memory was 71.6 MB in the beginning and 69.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 923.22 ms. Allocated memory is still 102.8 MB. Free memory was 69.7 MB in the beginning and 42.1 MB in the end (delta: 27.6 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3700.88 ms. Allocated memory was 102.8 MB in the beginning and 148.9 MB in the end (delta: 46.1 MB). Free memory was 78.1 MB in the beginning and 105.0 MB in the end (delta: -26.9 MB). Peak memory consumption was 85.6 MB. Max. memory is 16.1 GB. * Witness Printer took 160.66 ms. Allocated memory is still 148.9 MB. Free memory was 105.0 MB in the beginning and 91.4 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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: 560]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L565] int s ; [L569] s = 12292 [L23] int s__info_callback = __VERIFIER_nondet_int() ; [L24] int s__in_handshake = __VERIFIER_nondet_int() ; [L25] int s__state ; [L26] int s__new_session ; [L27] int s__server ; [L28] int s__version = __VERIFIER_nondet_int() ; [L29] int s__type ; [L30] int s__init_num ; [L31] int s__bbio = __VERIFIER_nondet_int() ; [L32] int s__wbio = __VERIFIER_nondet_int() ; [L33] int s__hit = __VERIFIER_nondet_int() ; [L34] int s__rwstate ; [L35] int s__init_buf___0 = __VERIFIER_nondet_int() ; [L36] int s__debug = __VERIFIER_nondet_int() ; [L37] int s__shutdown ; [L38] int s__ctx__info_callback = __VERIFIER_nondet_int() ; [L39] int s__ctx__stats__sess_connect_renegotiate = __VERIFIER_nondet_int() ; [L40] int s__ctx__stats__sess_connect = __VERIFIER_nondet_int() ; [L41] int s__ctx__stats__sess_hit = __VERIFIER_nondet_int() ; [L42] int s__ctx__stats__sess_connect_good = __VERIFIER_nondet_int() ; [L43] int s__s3__change_cipher_spec ; [L44] int s__s3__flags = __VERIFIER_nondet_int() ; [L45] int s__s3__delay_buf_pop_ret ; [L46] int s__s3__tmp__cert_req = __VERIFIER_nondet_int() ; [L47] int s__s3__tmp__new_compression = __VERIFIER_nondet_int() ; [L48] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int() ; [L49] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int() ; [L50] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() ; [L51] int s__s3__tmp__next_state___0 ; [L52] int s__s3__tmp__new_compression__id = __VERIFIER_nondet_int() ; [L53] int s__session__cipher ; [L54] int s__session__compress_meth ; [L55] int buf ; [L56] unsigned long tmp ; [L57] unsigned long l ; [L58] int num1 = __VERIFIER_nondet_int() ; [L59] int cb ; [L60] int ret ; [L61] int new_state ; [L62] int state ; [L63] int skip ; [L64] int tmp___0 ; [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 = __VERIFIER_nondet_int() ; [L72] int tmp___8 = __VERIFIER_nondet_int() ; [L73] int tmp___9 = __VERIFIER_nondet_int() ; [L74] int blastFlag ; [L75] int __cil_tmp55 ; [L76] unsigned long __cil_tmp56 ; [L77] long __cil_tmp57 ; [L78] long __cil_tmp58 ; [L79] long __cil_tmp59 ; [L80] long __cil_tmp60 ; [L81] long __cil_tmp61 ; [L82] long __cil_tmp62 ; [L83] long __cil_tmp63 ; [L84] long __cil_tmp64 ; [L85] long __cil_tmp65 ; [L89] s__state = initial_state [L90] blastFlag = 0 [L91] tmp = __VERIFIER_nondet_int() [L92] cb = 0 [L93] ret = -1 [L94] skip = 0 [L95] tmp___0 = 0 [L96] COND TRUE s__info_callback != 0 [L97] cb = s__info_callback [L103] s__in_handshake ++ [L104] COND FALSE !(tmp___1 + 12288) [L110] COND TRUE 1 [L112] state = s__state [L113] COND TRUE s__state == 12292 [L215] s__new_session = 1 [L216] s__state = 4096 [L217] s__ctx__stats__sess_connect_renegotiate ++ [L222] s__server = 0 [L223] COND TRUE cb != 0 [L227] __cil_tmp55 = s__version + 65280 [L228] COND FALSE !(__cil_tmp55 != 768) [L233] s__type = 4096 [L234] COND FALSE !(s__init_buf___0 == 0) [L246] COND FALSE !(! tmp___4) [L250] COND FALSE !(! tmp___5) [L254] s__state = 4368 [L255] s__ctx__stats__sess_connect ++ [L256] s__init_num = 0 [L532] COND FALSE !(! s__s3__tmp__reuse_message) [L549] skip = 0 [L110] COND TRUE 1 [L112] state = s__state [L113] COND FALSE !(s__state == 12292) [L116] COND FALSE !(s__state == 16384) [L119] COND FALSE !(s__state == 4096) [L122] COND FALSE !(s__state == 20480) [L125] COND FALSE !(s__state == 4099) [L128] COND TRUE s__state == 4368 [L260] s__shutdown = 0 [L261] ret = __VERIFIER_nondet_int() [L262] COND TRUE blastFlag == 0 [L263] blastFlag = 1 [L265] COND FALSE !(ret <= 0) [L268] s__state = 4384 [L269] s__init_num = 0 [L270] COND TRUE s__bbio != s__wbio [L532] COND FALSE !(! s__s3__tmp__reuse_message) [L549] skip = 0 [L110] COND TRUE 1 [L112] state = s__state [L113] COND FALSE !(s__state == 12292) [L116] COND FALSE !(s__state == 16384) [L119] COND FALSE !(s__state == 4096) [L122] COND FALSE !(s__state == 20480) [L125] COND FALSE !(s__state == 4099) [L128] COND FALSE !(s__state == 4368) [L131] COND FALSE !(s__state == 4369) [L134] COND TRUE s__state == 4384 [L276] ret = __VERIFIER_nondet_int() [L277] COND TRUE blastFlag == 1 [L278] blastFlag = 2 [L280] COND FALSE !(ret <= 0) [L283] COND FALSE !(\read(s__hit)) [L286] s__state = 4400 [L288] s__init_num = 0 [L532] COND FALSE !(! s__s3__tmp__reuse_message) [L549] skip = 0 [L110] COND TRUE 1 [L112] state = s__state [L113] COND FALSE !(s__state == 12292) [L116] COND FALSE !(s__state == 16384) [L119] COND FALSE !(s__state == 4096) [L122] COND FALSE !(s__state == 20480) [L125] COND FALSE !(s__state == 4099) [L128] COND FALSE !(s__state == 4368) [L131] COND FALSE !(s__state == 4369) [L134] COND FALSE !(s__state == 4384) [L137] COND FALSE !(s__state == 4385) [L140] COND TRUE s__state == 4400 [L293] __cil_tmp56 = (unsigned long )s__s3__tmp__new_cipher__algorithms [L294] COND FALSE !(__cil_tmp56 + 256UL) [L297] ret = __VERIFIER_nondet_int() [L298] COND TRUE blastFlag == 2 [L299] blastFlag = 3 [L305] COND FALSE !(ret <= 0) [L310] s__state = 4416 [L311] s__init_num = 0 [L532] COND FALSE !(! s__s3__tmp__reuse_message) [L549] skip = 0 [L110] COND TRUE 1 [L112] state = s__state [L113] COND FALSE !(s__state == 12292) [L116] COND FALSE !(s__state == 16384) [L119] COND FALSE !(s__state == 4096) [L122] COND FALSE !(s__state == 20480) [L125] COND FALSE !(s__state == 4099) [L128] COND FALSE !(s__state == 4368) [L131] COND FALSE !(s__state == 4369) [L134] COND FALSE !(s__state == 4384) [L137] COND FALSE !(s__state == 4385) [L140] COND FALSE !(s__state == 4400) [L143] COND FALSE !(s__state == 4401) [L146] COND TRUE s__state == 4416 [L315] ret = __VERIFIER_nondet_int() [L316] COND TRUE blastFlag == 3 [L317] blastFlag = 4 [L319] COND FALSE !(ret <= 0) [L322] s__state = 4432 [L323] s__init_num = 0 [L324] COND FALSE !(! tmp___6) [L532] COND FALSE !(! s__s3__tmp__reuse_message) [L549] skip = 0 [L110] COND TRUE 1 [L112] state = s__state [L113] COND FALSE !(s__state == 12292) [L116] COND FALSE !(s__state == 16384) [L119] COND FALSE !(s__state == 4096) [L122] COND FALSE !(s__state == 20480) [L125] COND FALSE !(s__state == 4099) [L128] COND FALSE !(s__state == 4368) [L131] COND FALSE !(s__state == 4369) [L134] COND FALSE !(s__state == 4384) [L137] COND FALSE !(s__state == 4385) [L140] COND FALSE !(s__state == 4400) [L143] COND FALSE !(s__state == 4401) [L146] COND FALSE !(s__state == 4416) [L149] COND FALSE !(s__state == 4417) [L152] COND TRUE s__state == 4432 [L331] ret = __VERIFIER_nondet_int() [L332] COND TRUE blastFlag == 4 [L560] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 128 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3428.3ms, OverallIterations: 10, TraceHistogramMax: 6, EmptinessCheckTime: 64.1ms, AutomataDifference: 1436.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 25.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1631 SDtfs, 274 SDslu, 970 SDs, 0 SdLazy, 641 SolverSat, 78 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 755.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=490occurred in iteration=9, InterpolantAutomatonStates: 27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 242.8ms AutomataMinimizationTime, 9 MinimizatonAttempts, 25 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 72.1ms SsaConstructionTime, 427.3ms SatisfiabilityAnalysisTime, 692.8ms InterpolantComputationTime, 755 NumberOfCodeBlocks, 755 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 639 ConstructedInterpolants, 0 QuantifiedInterpolants, 957 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 586/586 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 19:31:08,368 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11fd2049-1f19-46c8-a123-46372ff32f34/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...