./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl/s3_clnt.blast.02.i.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4df04655-80f3-49f2-95cf-504291448e9a/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4df04655-80f3-49f2-95cf-504291448e9a/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4df04655-80f3-49f2-95cf-504291448e9a/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4df04655-80f3-49f2-95cf-504291448e9a/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/openssl/s3_clnt.blast.02.i.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4df04655-80f3-49f2-95cf-504291448e9a/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4df04655-80f3-49f2-95cf-504291448e9a/bin/uautomizer-wIGwrQj20G --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 cb7820adb8b2f38a9324aaaef54a50c7e172a86afb91c31d3452a676649fd690 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 12:37:12,826 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 12:37:12,829 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 12:37:12,894 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 12:37:12,897 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 12:37:12,903 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 12:37:12,905 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 12:37:12,910 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 12:37:12,913 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 12:37:12,922 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 12:37:12,924 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 12:37:12,926 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 12:37:12,927 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 12:37:12,931 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 12:37:12,942 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 12:37:12,949 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 12:37:12,951 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 12:37:12,953 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 12:37:12,957 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 12:37:12,964 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 12:37:12,967 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 12:37:12,969 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 12:37:12,973 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 12:37:12,974 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 12:37:12,981 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 12:37:12,981 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 12:37:12,982 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 12:37:12,984 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 12:37:12,985 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 12:37:12,987 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 12:37:12,987 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 12:37:12,988 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 12:37:12,991 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 12:37:12,992 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 12:37:12,994 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 12:37:12,995 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 12:37:12,995 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 12:37:12,996 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 12:37:12,996 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 12:37:12,997 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 12:37:12,998 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 12:37:12,999 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4df04655-80f3-49f2-95cf-504291448e9a/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-23 12:37:13,049 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 12:37:13,049 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 12:37:13,050 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 12:37:13,050 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 12:37:13,052 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 12:37:13,052 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 12:37:13,052 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 12:37:13,052 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 12:37:13,053 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 12:37:13,053 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 12:37:13,054 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 12:37:13,054 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 12:37:13,055 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 12:37:13,055 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 12:37:13,055 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 12:37:13,055 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 12:37:13,056 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 12:37:13,056 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 12:37:13,056 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 12:37:13,056 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 12:37:13,057 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 12:37:13,057 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 12:37:13,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:37:13,057 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 12:37:13,058 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 12:37:13,058 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 12:37:13,058 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 12:37:13,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 12:37:13,058 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 12:37:13,061 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 12:37:13,061 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 12:37:13,061 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 12:37:13,061 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_4df04655-80f3-49f2-95cf-504291448e9a/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4df04655-80f3-49f2-95cf-504291448e9a/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb7820adb8b2f38a9324aaaef54a50c7e172a86afb91c31d3452a676649fd690 [2021-11-23 12:37:13,371 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 12:37:13,403 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 12:37:13,406 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 12:37:13,407 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 12:37:13,408 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 12:37:13,409 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4df04655-80f3-49f2-95cf-504291448e9a/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/openssl/s3_clnt.blast.02.i.cil-1.c [2021-11-23 12:37:13,488 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4df04655-80f3-49f2-95cf-504291448e9a/bin/uautomizer-wIGwrQj20G/data/daa7cd4c8/892c135c0361486ab26fdd29cfc3b19e/FLAGc9b288f43 [2021-11-23 12:37:14,268 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 12:37:14,273 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4df04655-80f3-49f2-95cf-504291448e9a/sv-benchmarks/c/openssl/s3_clnt.blast.02.i.cil-1.c [2021-11-23 12:37:14,308 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4df04655-80f3-49f2-95cf-504291448e9a/bin/uautomizer-wIGwrQj20G/data/daa7cd4c8/892c135c0361486ab26fdd29cfc3b19e/FLAGc9b288f43 [2021-11-23 12:37:14,431 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4df04655-80f3-49f2-95cf-504291448e9a/bin/uautomizer-wIGwrQj20G/data/daa7cd4c8/892c135c0361486ab26fdd29cfc3b19e [2021-11-23 12:37:14,434 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 12:37:14,436 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 12:37:14,438 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 12:37:14,438 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 12:37:14,442 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 12:37:14,443 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:37:14" (1/1) ... [2021-11-23 12:37:14,445 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77aa8aef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:37:14, skipping insertion in model container [2021-11-23 12:37:14,446 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:37:14" (1/1) ... [2021-11-23 12:37:14,454 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 12:37:14,515 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 12:37:14,986 WARN L230 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_4df04655-80f3-49f2-95cf-504291448e9a/sv-benchmarks/c/openssl/s3_clnt.blast.02.i.cil-1.c[65397,65410] [2021-11-23 12:37:14,995 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:37:15,010 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 12:37:15,168 WARN L230 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_4df04655-80f3-49f2-95cf-504291448e9a/sv-benchmarks/c/openssl/s3_clnt.blast.02.i.cil-1.c[65397,65410] [2021-11-23 12:37:15,171 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:37:15,201 INFO L208 MainTranslator]: Completed translation [2021-11-23 12:37:15,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:37:15 WrapperNode [2021-11-23 12:37:15,202 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 12:37:15,204 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 12:37:15,205 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 12:37:15,205 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 12:37:15,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:37:15" (1/1) ... [2021-11-23 12:37:15,265 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:37:15" (1/1) ... [2021-11-23 12:37:15,350 INFO L137 Inliner]: procedures = 31, calls = 217, calls flagged for inlining = 7, calls inlined = 3, statements flattened = 718 [2021-11-23 12:37:15,350 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 12:37:15,351 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 12:37:15,351 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 12:37:15,351 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 12:37:15,361 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:37:15" (1/1) ... [2021-11-23 12:37:15,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:37:15" (1/1) ... [2021-11-23 12:37:15,387 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:37:15" (1/1) ... [2021-11-23 12:37:15,393 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:37:15" (1/1) ... [2021-11-23 12:37:15,447 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:37:15" (1/1) ... [2021-11-23 12:37:15,455 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:37:15" (1/1) ... [2021-11-23 12:37:15,458 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:37:15" (1/1) ... [2021-11-23 12:37:15,464 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 12:37:15,465 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 12:37:15,465 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 12:37:15,465 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 12:37:15,466 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:37:15" (1/1) ... [2021-11-23 12:37:15,473 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:37:15,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4df04655-80f3-49f2-95cf-504291448e9a/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:37:15,496 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4df04655-80f3-49f2-95cf-504291448e9a/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 12:37:15,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4df04655-80f3-49f2-95cf-504291448e9a/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 12:37:15,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 12:37:15,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 12:37:15,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 12:37:15,539 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 12:37:15,540 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 12:37:15,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 12:37:15,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 12:37:15,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 12:37:15,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 12:37:15,723 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 12:37:15,725 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 12:37:15,764 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-23 12:37:19,170 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2021-11-23 12:37:19,170 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2021-11-23 12:37:19,171 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 12:37:19,188 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 12:37:19,188 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 12:37:19,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:37:19 BoogieIcfgContainer [2021-11-23 12:37:19,190 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 12:37:19,193 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 12:37:19,193 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 12:37:19,196 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 12:37:19,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 12:37:14" (1/3) ... [2021-11-23 12:37:19,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22e42156 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:37:19, skipping insertion in model container [2021-11-23 12:37:19,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:37:15" (2/3) ... [2021-11-23 12:37:19,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22e42156 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:37:19, skipping insertion in model container [2021-11-23 12:37:19,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:37:19" (3/3) ... [2021-11-23 12:37:19,198 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt.blast.02.i.cil-1.c [2021-11-23 12:37:19,203 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 12:37:19,203 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 12:37:19,263 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 12:37:19,271 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 [2021-11-23 12:37:19,272 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 12:37:19,296 INFO L276 IsEmpty]: Start isEmpty. Operand has 129 states, 127 states have (on average 1.7086614173228347) internal successors, (217), 128 states have internal predecessors, (217), 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) [2021-11-23 12:37:19,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-23 12:37:19,304 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:37:19,305 INFO L514 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] [2021-11-23 12:37:19,306 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:37:19,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:37:19,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1457695037, now seen corresponding path program 1 times [2021-11-23 12:37:19,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:37:19,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763019688] [2021-11-23 12:37:19,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:37:19,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:37:19,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:37:19,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:37:19,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:37:19,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763019688] [2021-11-23 12:37:19,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763019688] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:37:19,843 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:37:19,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:37:19,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313959328] [2021-11-23 12:37:19,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:37:19,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:37:19,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:37:19,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:37:19,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:37:19,895 INFO L87 Difference]: Start difference. First operand has 129 states, 127 states have (on average 1.7086614173228347) internal successors, (217), 128 states have internal predecessors, (217), 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 4 states, 4 states have (on average 6.0) internal successors, (24), 4 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) [2021-11-23 12:37:21,927 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 12:37:22,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:37:22,373 INFO L93 Difference]: Finished difference Result 255 states and 430 transitions. [2021-11-23 12:37:22,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:37:22,377 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 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 [2021-11-23 12:37:22,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:37:22,389 INFO L225 Difference]: With dead ends: 255 [2021-11-23 12:37:22,389 INFO L226 Difference]: Without dead ends: 116 [2021-11-23 12:37:22,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:37:22,397 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 7 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-23 12:37:22,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 530 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 101 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2021-11-23 12:37:22,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-11-23 12:37:22,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 115. [2021-11-23 12:37:22,445 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) [2021-11-23 12:37:22,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 172 transitions. [2021-11-23 12:37:22,448 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 172 transitions. Word has length 24 [2021-11-23 12:37:22,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:37:22,449 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 172 transitions. [2021-11-23 12:37:22,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 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) [2021-11-23 12:37:22,450 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 172 transitions. [2021-11-23 12:37:22,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-23 12:37:22,452 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:37:22,452 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:37:22,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 12:37:22,453 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:37:22,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:37:22,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1001988123, now seen corresponding path program 1 times [2021-11-23 12:37:22,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:37:22,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994374286] [2021-11-23 12:37:22,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:37:22,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:37:22,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:37:22,602 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 12:37:22,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:37:22,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994374286] [2021-11-23 12:37:22,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994374286] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:37:22,603 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:37:22,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:37:22,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858112957] [2021-11-23 12:37:22,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:37:22,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:37:22,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:37:22,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:37:22,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:37:22,608 INFO L87 Difference]: Start difference. First operand 115 states and 172 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2021-11-23 12:37:22,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:37:22,681 INFO L93 Difference]: Finished difference Result 320 states and 482 transitions. [2021-11-23 12:37:22,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:37:22,685 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 38 [2021-11-23 12:37:22,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:37:22,688 INFO L225 Difference]: With dead ends: 320 [2021-11-23 12:37:22,691 INFO L226 Difference]: Without dead ends: 215 [2021-11-23 12:37:22,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:37:22,698 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 123 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:37:22,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 311 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:37:22,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-11-23 12:37:22,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2021-11-23 12:37:22,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 1.4906542056074767) internal successors, (319), 214 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:37:22,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 319 transitions. [2021-11-23 12:37:22,728 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 319 transitions. Word has length 38 [2021-11-23 12:37:22,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:37:22,729 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 319 transitions. [2021-11-23 12:37:22,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2021-11-23 12:37:22,729 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 319 transitions. [2021-11-23 12:37:22,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-23 12:37:22,733 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:37:22,733 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:37:22,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 12:37:22,734 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:37:22,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:37:22,735 INFO L85 PathProgramCache]: Analyzing trace with hash 996888307, now seen corresponding path program 1 times [2021-11-23 12:37:22,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:37:22,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119832073] [2021-11-23 12:37:22,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:37:22,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:37:22,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:37:22,857 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 12:37:22,857 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:37:22,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119832073] [2021-11-23 12:37:22,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119832073] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:37:22,858 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:37:22,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:37:22,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76917905] [2021-11-23 12:37:22,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:37:22,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:37:22,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:37:22,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:37:22,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:37:22,860 INFO L87 Difference]: Start difference. First operand 215 states and 319 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2021-11-23 12:37:24,873 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 12:37:24,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:37:24,937 INFO L93 Difference]: Finished difference Result 420 states and 630 transitions. [2021-11-23 12:37:24,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:37:24,938 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 53 [2021-11-23 12:37:24,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:37:24,948 INFO L225 Difference]: With dead ends: 420 [2021-11-23 12:37:24,948 INFO L226 Difference]: Without dead ends: 315 [2021-11-23 12:37:24,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:37:24,959 INFO L933 BasicCegarLoop]: 304 mSDtfsCounter, 124 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:37:24,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 460 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 17 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2021-11-23 12:37:24,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2021-11-23 12:37:25,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2021-11-23 12:37:25,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 314 states have (on average 1.484076433121019) internal successors, (466), 314 states have internal predecessors, (466), 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) [2021-11-23 12:37:25,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 466 transitions. [2021-11-23 12:37:25,018 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 466 transitions. Word has length 53 [2021-11-23 12:37:25,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:37:25,019 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 466 transitions. [2021-11-23 12:37:25,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2021-11-23 12:37:25,020 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 466 transitions. [2021-11-23 12:37:25,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-23 12:37:25,030 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:37:25,030 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:37:25,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 12:37:25,032 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:37:25,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:37:25,033 INFO L85 PathProgramCache]: Analyzing trace with hash -973367758, now seen corresponding path program 1 times [2021-11-23 12:37:25,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:37:25,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21925692] [2021-11-23 12:37:25,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:37:25,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:37:25,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:37:25,285 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-23 12:37:25,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:37:25,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21925692] [2021-11-23 12:37:25,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21925692] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:37:25,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:37:25,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:37:25,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880771247] [2021-11-23 12:37:25,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:37:25,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:37:25,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:37:25,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:37:25,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:37:25,288 INFO L87 Difference]: Start difference. First operand 315 states and 466 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2021-11-23 12:37:26,794 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 12:37:28,813 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 12:37:29,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:37:29,383 INFO L93 Difference]: Finished difference Result 805 states and 1196 transitions. [2021-11-23 12:37:29,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:37:29,384 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 71 [2021-11-23 12:37:29,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:37:29,388 INFO L225 Difference]: With dead ends: 805 [2021-11-23 12:37:29,388 INFO L226 Difference]: Without dead ends: 500 [2021-11-23 12:37:29,389 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:37:29,390 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 97 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:37:29,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 560 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 238 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2021-11-23 12:37:29,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2021-11-23 12:37:29,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 365. [2021-11-23 12:37:29,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 364 states have (on average 1.5164835164835164) internal successors, (552), 364 states have internal predecessors, (552), 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) [2021-11-23 12:37:29,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 552 transitions. [2021-11-23 12:37:29,417 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 552 transitions. Word has length 71 [2021-11-23 12:37:29,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:37:29,418 INFO L470 AbstractCegarLoop]: Abstraction has 365 states and 552 transitions. [2021-11-23 12:37:29,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2021-11-23 12:37:29,418 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 552 transitions. [2021-11-23 12:37:29,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-23 12:37:29,420 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:37:29,421 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:37:29,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 12:37:29,421 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:37:29,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:37:29,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1107381264, now seen corresponding path program 1 times [2021-11-23 12:37:29,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:37:29,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560658086] [2021-11-23 12:37:29,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:37:29,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:37:29,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:37:29,532 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-23 12:37:29,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:37:29,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560658086] [2021-11-23 12:37:29,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560658086] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:37:29,533 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:37:29,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:37:29,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998544434] [2021-11-23 12:37:29,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:37:29,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:37:29,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:37:29,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:37:29,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:37:29,535 INFO L87 Difference]: Start difference. First operand 365 states and 552 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2021-11-23 12:37:31,551 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 12:37:33,560 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 12:37:33,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:37:33,939 INFO L93 Difference]: Finished difference Result 805 states and 1217 transitions. [2021-11-23 12:37:33,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:37:33,941 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 71 [2021-11-23 12:37:33,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:37:33,947 INFO L225 Difference]: With dead ends: 805 [2021-11-23 12:37:33,948 INFO L226 Difference]: Without dead ends: 450 [2021-11-23 12:37:33,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:37:33,952 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 40 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-11-23 12:37:33,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 494 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 146 Invalid, 2 Unknown, 0 Unchecked, 4.4s Time] [2021-11-23 12:37:33,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2021-11-23 12:37:33,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 405. [2021-11-23 12:37:33,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 404 states have (on average 1.5346534653465347) internal successors, (620), 404 states have internal predecessors, (620), 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) [2021-11-23 12:37:33,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 620 transitions. [2021-11-23 12:37:33,980 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 620 transitions. Word has length 71 [2021-11-23 12:37:33,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:37:33,987 INFO L470 AbstractCegarLoop]: Abstraction has 405 states and 620 transitions. [2021-11-23 12:37:33,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2021-11-23 12:37:33,987 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 620 transitions. [2021-11-23 12:37:33,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-23 12:37:33,990 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:37:33,991 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:37:33,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 12:37:33,991 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:37:33,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:37:33,993 INFO L85 PathProgramCache]: Analyzing trace with hash -114315255, now seen corresponding path program 1 times [2021-11-23 12:37:33,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:37:33,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178167972] [2021-11-23 12:37:33,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:37:33,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:37:34,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:37:34,181 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-23 12:37:34,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:37:34,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178167972] [2021-11-23 12:37:34,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178167972] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:37:34,186 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:37:34,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:37:34,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235359681] [2021-11-23 12:37:34,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:37:34,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:37:34,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:37:34,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:37:34,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:37:34,189 INFO L87 Difference]: Start difference. First operand 405 states and 620 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2021-11-23 12:37:36,202 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 12:37:38,218 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 12:37:38,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:37:38,742 INFO L93 Difference]: Finished difference Result 927 states and 1408 transitions. [2021-11-23 12:37:38,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:37:38,743 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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 72 [2021-11-23 12:37:38,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:37:38,749 INFO L225 Difference]: With dead ends: 927 [2021-11-23 12:37:38,750 INFO L226 Difference]: Without dead ends: 532 [2021-11-23 12:37:38,751 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:37:38,753 INFO L933 BasicCegarLoop]: 234 mSDtfsCounter, 91 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 8 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-11-23 12:37:38,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 550 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 234 Invalid, 2 Unknown, 0 Unchecked, 4.5s Time] [2021-11-23 12:37:38,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2021-11-23 12:37:38,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 407. [2021-11-23 12:37:38,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 406 states have (on average 1.5320197044334976) internal successors, (622), 406 states have internal predecessors, (622), 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) [2021-11-23 12:37:38,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 622 transitions. [2021-11-23 12:37:38,780 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 622 transitions. Word has length 72 [2021-11-23 12:37:38,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:37:38,781 INFO L470 AbstractCegarLoop]: Abstraction has 407 states and 622 transitions. [2021-11-23 12:37:38,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2021-11-23 12:37:38,782 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 622 transitions. [2021-11-23 12:37:38,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-23 12:37:38,783 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:37:38,783 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:37:38,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 12:37:38,784 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:37:38,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:37:38,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1902129482, now seen corresponding path program 2 times [2021-11-23 12:37:38,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:37:38,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725804147] [2021-11-23 12:37:38,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:37:38,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:37:38,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:37:38,961 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-23 12:37:38,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:37:38,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725804147] [2021-11-23 12:37:38,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725804147] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:37:38,962 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:37:38,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:37:38,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58424090] [2021-11-23 12:37:38,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:37:38,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:37:38,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:37:38,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:37:38,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:37:38,964 INFO L87 Difference]: Start difference. First operand 407 states and 622 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:37:40,977 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 12:37:42,994 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 12:37:43,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:37:43,465 INFO L93 Difference]: Finished difference Result 927 states and 1406 transitions. [2021-11-23 12:37:43,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:37:43,466 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-23 12:37:43,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:37:43,471 INFO L225 Difference]: With dead ends: 927 [2021-11-23 12:37:43,471 INFO L226 Difference]: Without dead ends: 530 [2021-11-23 12:37:43,472 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:37:43,474 INFO L933 BasicCegarLoop]: 233 mSDtfsCounter, 104 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 8 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-11-23 12:37:43,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 548 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 231 Invalid, 2 Unknown, 0 Unchecked, 4.5s Time] [2021-11-23 12:37:43,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2021-11-23 12:37:43,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 407. [2021-11-23 12:37:43,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 406 states have (on average 1.5270935960591132) internal successors, (620), 406 states have internal predecessors, (620), 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) [2021-11-23 12:37:43,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 620 transitions. [2021-11-23 12:37:43,498 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 620 transitions. Word has length 85 [2021-11-23 12:37:43,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:37:43,499 INFO L470 AbstractCegarLoop]: Abstraction has 407 states and 620 transitions. [2021-11-23 12:37:43,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:37:43,499 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 620 transitions. [2021-11-23 12:37:43,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-23 12:37:43,506 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:37:43,506 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:37:43,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 12:37:43,508 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:37:43,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:37:43,514 INFO L85 PathProgramCache]: Analyzing trace with hash 793149036, now seen corresponding path program 1 times [2021-11-23 12:37:43,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:37:43,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220771308] [2021-11-23 12:37:43,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:37:43,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:37:43,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:37:43,662 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-23 12:37:43,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:37:43,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220771308] [2021-11-23 12:37:43,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220771308] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:37:43,664 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:37:43,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:37:43,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814701051] [2021-11-23 12:37:43,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:37:43,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:37:43,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:37:43,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:37:43,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:37:43,669 INFO L87 Difference]: Start difference. First operand 407 states and 620 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:37:45,680 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 12:37:47,698 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 12:37:48,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:37:48,218 INFO L93 Difference]: Finished difference Result 927 states and 1402 transitions. [2021-11-23 12:37:48,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:37:48,222 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-23 12:37:48,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:37:48,226 INFO L225 Difference]: With dead ends: 927 [2021-11-23 12:37:48,226 INFO L226 Difference]: Without dead ends: 530 [2021-11-23 12:37:48,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:37:48,228 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 102 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 8 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-11-23 12:37:48,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 546 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 231 Invalid, 2 Unknown, 0 Unchecked, 4.5s Time] [2021-11-23 12:37:48,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2021-11-23 12:37:48,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 407. [2021-11-23 12:37:48,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 406 states have (on average 1.522167487684729) internal successors, (618), 406 states have internal predecessors, (618), 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) [2021-11-23 12:37:48,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 618 transitions. [2021-11-23 12:37:48,251 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 618 transitions. Word has length 85 [2021-11-23 12:37:48,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:37:48,252 INFO L470 AbstractCegarLoop]: Abstraction has 407 states and 618 transitions. [2021-11-23 12:37:48,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:37:48,252 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 618 transitions. [2021-11-23 12:37:48,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-23 12:37:48,256 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:37:48,257 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:37:48,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 12:37:48,258 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:37:48,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:37:48,259 INFO L85 PathProgramCache]: Analyzing trace with hash 872770184, now seen corresponding path program 2 times [2021-11-23 12:37:48,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:37:48,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614416756] [2021-11-23 12:37:48,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:37:48,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:37:48,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:37:48,377 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-23 12:37:48,377 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:37:48,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614416756] [2021-11-23 12:37:48,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614416756] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:37:48,378 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:37:48,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:37:48,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421286132] [2021-11-23 12:37:48,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:37:48,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:37:48,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:37:48,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:37:48,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:37:48,380 INFO L87 Difference]: Start difference. First operand 407 states and 618 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:37:50,391 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 12:37:52,403 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 12:37:52,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:37:52,719 INFO L93 Difference]: Finished difference Result 847 states and 1277 transitions. [2021-11-23 12:37:52,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:37:52,720 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-23 12:37:52,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:37:52,723 INFO L225 Difference]: With dead ends: 847 [2021-11-23 12:37:52,723 INFO L226 Difference]: Without dead ends: 450 [2021-11-23 12:37:52,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:37:52,725 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 48 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-11-23 12:37:52,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 494 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 141 Invalid, 2 Unknown, 0 Unchecked, 4.3s Time] [2021-11-23 12:37:52,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2021-11-23 12:37:52,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 407. [2021-11-23 12:37:52,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 406 states have (on average 1.5172413793103448) internal successors, (616), 406 states have internal predecessors, (616), 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) [2021-11-23 12:37:52,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 616 transitions. [2021-11-23 12:37:52,741 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 616 transitions. Word has length 85 [2021-11-23 12:37:52,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:37:52,741 INFO L470 AbstractCegarLoop]: Abstraction has 407 states and 616 transitions. [2021-11-23 12:37:52,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:37:52,742 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 616 transitions. [2021-11-23 12:37:52,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-23 12:37:52,743 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:37:52,744 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:37:52,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 12:37:52,744 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:37:52,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:37:52,745 INFO L85 PathProgramCache]: Analyzing trace with hash -236210262, now seen corresponding path program 1 times [2021-11-23 12:37:52,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:37:52,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903772997] [2021-11-23 12:37:52,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:37:52,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:37:52,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:37:52,840 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-23 12:37:52,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:37:52,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903772997] [2021-11-23 12:37:52,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903772997] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:37:52,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:37:52,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:37:52,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164222903] [2021-11-23 12:37:52,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:37:52,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:37:52,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:37:52,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:37:52,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:37:52,843 INFO L87 Difference]: Start difference. First operand 407 states and 616 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:37:54,856 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 12:37:56,725 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 12:37:57,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:37:57,057 INFO L93 Difference]: Finished difference Result 847 states and 1273 transitions. [2021-11-23 12:37:57,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:37:57,058 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-23 12:37:57,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:37:57,062 INFO L225 Difference]: With dead ends: 847 [2021-11-23 12:37:57,062 INFO L226 Difference]: Without dead ends: 450 [2021-11-23 12:37:57,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:37:57,065 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 46 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:37:57,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 492 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 142 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2021-11-23 12:37:57,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2021-11-23 12:37:57,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 407. [2021-11-23 12:37:57,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 406 states have (on average 1.5123152709359606) internal successors, (614), 406 states have internal predecessors, (614), 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) [2021-11-23 12:37:57,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 614 transitions. [2021-11-23 12:37:57,081 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 614 transitions. Word has length 85 [2021-11-23 12:37:57,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:37:57,082 INFO L470 AbstractCegarLoop]: Abstraction has 407 states and 614 transitions. [2021-11-23 12:37:57,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:37:57,082 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 614 transitions. [2021-11-23 12:37:57,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-23 12:37:57,084 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:37:57,084 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:37:57,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 12:37:57,085 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:37:57,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:37:57,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1127790653, now seen corresponding path program 1 times [2021-11-23 12:37:57,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:37:57,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878768512] [2021-11-23 12:37:57,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:37:57,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:37:57,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:37:57,191 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-23 12:37:57,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:37:57,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878768512] [2021-11-23 12:37:57,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878768512] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:37:57,192 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:37:57,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:37:57,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383616660] [2021-11-23 12:37:57,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:37:57,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:37:57,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:37:57,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:37:57,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:37:57,195 INFO L87 Difference]: Start difference. First operand 407 states and 614 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:37:59,208 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 12:38:01,230 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 12:38:01,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:38:01,725 INFO L93 Difference]: Finished difference Result 927 states and 1390 transitions. [2021-11-23 12:38:01,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:38:01,727 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-11-23 12:38:01,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:38:01,731 INFO L225 Difference]: With dead ends: 927 [2021-11-23 12:38:01,731 INFO L226 Difference]: Without dead ends: 530 [2021-11-23 12:38:01,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:38:01,733 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 100 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 8 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-11-23 12:38:01,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 544 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 231 Invalid, 2 Unknown, 0 Unchecked, 4.5s Time] [2021-11-23 12:38:01,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2021-11-23 12:38:01,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 407. [2021-11-23 12:38:01,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 406 states have (on average 1.5073891625615763) internal successors, (612), 406 states have internal predecessors, (612), 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) [2021-11-23 12:38:01,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 612 transitions. [2021-11-23 12:38:01,754 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 612 transitions. Word has length 86 [2021-11-23 12:38:01,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:38:01,754 INFO L470 AbstractCegarLoop]: Abstraction has 407 states and 612 transitions. [2021-11-23 12:38:01,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:38:01,755 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 612 transitions. [2021-11-23 12:38:01,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-23 12:38:01,757 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:38:01,757 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:38:01,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-23 12:38:01,758 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:38:01,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:38:01,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1321809477, now seen corresponding path program 1 times [2021-11-23 12:38:01,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:38:01,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798409229] [2021-11-23 12:38:01,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:38:01,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:38:01,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:38:01,881 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-23 12:38:01,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:38:01,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798409229] [2021-11-23 12:38:01,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798409229] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:38:01,882 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:38:01,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:38:01,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260986165] [2021-11-23 12:38:01,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:38:01,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:38:01,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:38:01,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:38:01,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:38:01,884 INFO L87 Difference]: Start difference. First operand 407 states and 612 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:38:03,896 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 12:38:05,912 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 12:38:06,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:38:06,221 INFO L93 Difference]: Finished difference Result 847 states and 1265 transitions. [2021-11-23 12:38:06,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:38:06,222 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-11-23 12:38:06,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:38:06,226 INFO L225 Difference]: With dead ends: 847 [2021-11-23 12:38:06,226 INFO L226 Difference]: Without dead ends: 450 [2021-11-23 12:38:06,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:38:06,228 INFO L933 BasicCegarLoop]: 204 mSDtfsCounter, 44 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-11-23 12:38:06,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 490 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 141 Invalid, 2 Unknown, 0 Unchecked, 4.3s Time] [2021-11-23 12:38:06,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2021-11-23 12:38:06,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 407. [2021-11-23 12:38:06,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 406 states have (on average 1.5024630541871922) internal successors, (610), 406 states have internal predecessors, (610), 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) [2021-11-23 12:38:06,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 610 transitions. [2021-11-23 12:38:06,245 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 610 transitions. Word has length 86 [2021-11-23 12:38:06,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:38:06,245 INFO L470 AbstractCegarLoop]: Abstraction has 407 states and 610 transitions. [2021-11-23 12:38:06,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:38:06,246 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 610 transitions. [2021-11-23 12:38:06,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-23 12:38:06,247 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:38:06,248 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:38:06,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-23 12:38:06,248 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:38:06,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:38:06,249 INFO L85 PathProgramCache]: Analyzing trace with hash -490798233, now seen corresponding path program 1 times [2021-11-23 12:38:06,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:38:06,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873942349] [2021-11-23 12:38:06,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:38:06,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:38:06,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:38:06,338 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-23 12:38:06,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:38:06,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873942349] [2021-11-23 12:38:06,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873942349] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:38:06,339 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:38:06,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:38:06,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125139167] [2021-11-23 12:38:06,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:38:06,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:38:06,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:38:06,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:38:06,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:38:06,342 INFO L87 Difference]: Start difference. First operand 407 states and 610 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 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) [2021-11-23 12:38:08,355 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 12:38:10,368 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 12:38:10,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:38:10,880 INFO L93 Difference]: Finished difference Result 927 states and 1382 transitions. [2021-11-23 12:38:10,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:38:10,881 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 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 87 [2021-11-23 12:38:10,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:38:10,885 INFO L225 Difference]: With dead ends: 927 [2021-11-23 12:38:10,885 INFO L226 Difference]: Without dead ends: 530 [2021-11-23 12:38:10,886 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:38:10,887 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 98 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 8 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-11-23 12:38:10,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 542 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 231 Invalid, 2 Unknown, 0 Unchecked, 4.5s Time] [2021-11-23 12:38:10,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2021-11-23 12:38:10,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 407. [2021-11-23 12:38:10,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 406 states have (on average 1.4975369458128078) internal successors, (608), 406 states have internal predecessors, (608), 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) [2021-11-23 12:38:10,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 608 transitions. [2021-11-23 12:38:10,903 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 608 transitions. Word has length 87 [2021-11-23 12:38:10,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:38:10,903 INFO L470 AbstractCegarLoop]: Abstraction has 407 states and 608 transitions. [2021-11-23 12:38:10,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 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) [2021-11-23 12:38:10,904 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 608 transitions. [2021-11-23 12:38:10,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-23 12:38:10,905 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:38:10,906 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:38:10,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-23 12:38:10,906 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:38:10,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:38:10,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1383461914, now seen corresponding path program 1 times [2021-11-23 12:38:10,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:38:10,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876109293] [2021-11-23 12:38:10,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:38:10,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:38:10,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:38:11,031 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-23 12:38:11,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:38:11,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876109293] [2021-11-23 12:38:11,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876109293] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:38:11,033 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:38:11,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:38:11,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199231554] [2021-11-23 12:38:11,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:38:11,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:38:11,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:38:11,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:38:11,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:38:11,035 INFO L87 Difference]: Start difference. First operand 407 states and 608 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 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) [2021-11-23 12:38:13,049 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 12:38:15,068 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 12:38:15,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:38:15,604 INFO L93 Difference]: Finished difference Result 783 states and 1162 transitions. [2021-11-23 12:38:15,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:38:15,605 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 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 87 [2021-11-23 12:38:15,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:38:15,610 INFO L225 Difference]: With dead ends: 783 [2021-11-23 12:38:15,610 INFO L226 Difference]: Without dead ends: 530 [2021-11-23 12:38:15,611 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:38:15,612 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 95 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 8 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-11-23 12:38:15,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 542 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 231 Invalid, 2 Unknown, 0 Unchecked, 4.5s Time] [2021-11-23 12:38:15,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2021-11-23 12:38:15,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 407. [2021-11-23 12:38:15,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 406 states have (on average 1.4926108374384237) internal successors, (606), 406 states have internal predecessors, (606), 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) [2021-11-23 12:38:15,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 606 transitions. [2021-11-23 12:38:15,630 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 606 transitions. Word has length 87 [2021-11-23 12:38:15,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:38:15,630 INFO L470 AbstractCegarLoop]: Abstraction has 407 states and 606 transitions. [2021-11-23 12:38:15,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 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) [2021-11-23 12:38:15,631 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 606 transitions. [2021-11-23 12:38:15,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-23 12:38:15,633 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:38:15,633 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:38:15,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-23 12:38:15,634 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:38:15,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:38:15,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1862605531, now seen corresponding path program 1 times [2021-11-23 12:38:15,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:38:15,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050693677] [2021-11-23 12:38:15,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:38:15,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:38:15,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:38:15,747 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-23 12:38:15,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:38:15,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050693677] [2021-11-23 12:38:15,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050693677] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:38:15,748 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:38:15,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:38:15,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126144611] [2021-11-23 12:38:15,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:38:15,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:38:15,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:38:15,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:38:15,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:38:15,750 INFO L87 Difference]: Start difference. First operand 407 states and 606 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 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) [2021-11-23 12:38:17,766 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 12:38:19,778 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 12:38:20,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:38:20,117 INFO L93 Difference]: Finished difference Result 847 states and 1253 transitions. [2021-11-23 12:38:20,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:38:20,118 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 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 87 [2021-11-23 12:38:20,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:38:20,122 INFO L225 Difference]: With dead ends: 847 [2021-11-23 12:38:20,122 INFO L226 Difference]: Without dead ends: 450 [2021-11-23 12:38:20,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:38:20,124 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 42 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-11-23 12:38:20,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 486 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 141 Invalid, 2 Unknown, 0 Unchecked, 4.3s Time] [2021-11-23 12:38:20,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2021-11-23 12:38:20,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 407. [2021-11-23 12:38:20,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 406 states have (on average 1.4876847290640394) internal successors, (604), 406 states have internal predecessors, (604), 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) [2021-11-23 12:38:20,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 604 transitions. [2021-11-23 12:38:20,143 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 604 transitions. Word has length 87 [2021-11-23 12:38:20,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:38:20,143 INFO L470 AbstractCegarLoop]: Abstraction has 407 states and 604 transitions. [2021-11-23 12:38:20,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 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) [2021-11-23 12:38:20,144 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 604 transitions. [2021-11-23 12:38:20,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-23 12:38:20,146 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:38:20,146 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:38:20,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-23 12:38:20,147 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:38:20,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:38:20,147 INFO L85 PathProgramCache]: Analyzing trace with hash 11654616, now seen corresponding path program 1 times [2021-11-23 12:38:20,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:38:20,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565510940] [2021-11-23 12:38:20,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:38:20,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:38:20,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:38:20,252 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-23 12:38:20,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:38:20,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565510940] [2021-11-23 12:38:20,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565510940] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:38:20,256 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:38:20,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:38:20,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135828846] [2021-11-23 12:38:20,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:38:20,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:38:20,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:38:20,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:38:20,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:38:20,258 INFO L87 Difference]: Start difference. First operand 407 states and 604 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 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) [2021-11-23 12:38:22,274 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 12:38:24,284 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 12:38:24,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:38:24,628 INFO L93 Difference]: Finished difference Result 703 states and 1035 transitions. [2021-11-23 12:38:24,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:38:24,629 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 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 87 [2021-11-23 12:38:24,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:38:24,633 INFO L225 Difference]: With dead ends: 703 [2021-11-23 12:38:24,633 INFO L226 Difference]: Without dead ends: 450 [2021-11-23 12:38:24,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:38:24,634 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 39 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-11-23 12:38:24,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 486 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 141 Invalid, 2 Unknown, 0 Unchecked, 4.3s Time] [2021-11-23 12:38:24,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2021-11-23 12:38:24,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 407. [2021-11-23 12:38:24,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 406 states have (on average 1.4827586206896552) internal successors, (602), 406 states have internal predecessors, (602), 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) [2021-11-23 12:38:24,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 602 transitions. [2021-11-23 12:38:24,652 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 602 transitions. Word has length 87 [2021-11-23 12:38:24,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:38:24,652 INFO L470 AbstractCegarLoop]: Abstraction has 407 states and 602 transitions. [2021-11-23 12:38:24,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 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) [2021-11-23 12:38:24,653 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 602 transitions. [2021-11-23 12:38:24,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-23 12:38:24,655 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:38:24,656 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:38:24,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-23 12:38:24,657 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:38:24,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:38:24,658 INFO L85 PathProgramCache]: Analyzing trace with hash 2132678238, now seen corresponding path program 1 times [2021-11-23 12:38:24,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:38:24,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063062808] [2021-11-23 12:38:24,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:38:24,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:38:24,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:38:24,783 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-23 12:38:24,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:38:24,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063062808] [2021-11-23 12:38:24,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063062808] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:38:24,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:38:24,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:38:24,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699303356] [2021-11-23 12:38:24,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:38:24,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:38:24,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:38:24,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:38:24,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:38:24,786 INFO L87 Difference]: Start difference. First operand 407 states and 602 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:38:26,799 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 12:38:28,820 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 12:38:29,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:38:29,298 INFO L93 Difference]: Finished difference Result 909 states and 1344 transitions. [2021-11-23 12:38:29,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:38:29,299 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-23 12:38:29,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:38:29,302 INFO L225 Difference]: With dead ends: 909 [2021-11-23 12:38:29,302 INFO L226 Difference]: Without dead ends: 512 [2021-11-23 12:38:29,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:38:29,304 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 88 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 5 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-11-23 12:38:29,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 526 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 220 Invalid, 2 Unknown, 0 Unchecked, 4.5s Time] [2021-11-23 12:38:29,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2021-11-23 12:38:29,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 407. [2021-11-23 12:38:29,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 406 states have (on average 1.477832512315271) internal successors, (600), 406 states have internal predecessors, (600), 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) [2021-11-23 12:38:29,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 600 transitions. [2021-11-23 12:38:29,321 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 600 transitions. Word has length 88 [2021-11-23 12:38:29,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:38:29,321 INFO L470 AbstractCegarLoop]: Abstraction has 407 states and 600 transitions. [2021-11-23 12:38:29,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:38:29,322 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 600 transitions. [2021-11-23 12:38:29,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-23 12:38:29,323 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:38:29,323 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:38:29,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-23 12:38:29,324 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:38:29,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:38:29,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1903796849, now seen corresponding path program 1 times [2021-11-23 12:38:29,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:38:29,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755416914] [2021-11-23 12:38:29,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:38:29,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:38:29,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:38:29,404 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-23 12:38:29,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:38:29,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755416914] [2021-11-23 12:38:29,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755416914] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:38:29,405 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:38:29,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:38:29,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560347341] [2021-11-23 12:38:29,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:38:29,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:38:29,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:38:29,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:38:29,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:38:29,407 INFO L87 Difference]: Start difference. First operand 407 states and 600 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:38:31,420 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 12:38:33,451 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 12:38:33,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:38:33,871 INFO L93 Difference]: Finished difference Result 758 states and 1119 transitions. [2021-11-23 12:38:33,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:38:33,872 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-23 12:38:33,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:38:33,876 INFO L225 Difference]: With dead ends: 758 [2021-11-23 12:38:33,876 INFO L226 Difference]: Without dead ends: 505 [2021-11-23 12:38:33,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:38:33,878 INFO L933 BasicCegarLoop]: 218 mSDtfsCounter, 81 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-11-23 12:38:33,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 518 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 215 Invalid, 2 Unknown, 0 Unchecked, 4.4s Time] [2021-11-23 12:38:33,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2021-11-23 12:38:33,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 407. [2021-11-23 12:38:33,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 406 states have (on average 1.4729064039408868) internal successors, (598), 406 states have internal predecessors, (598), 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) [2021-11-23 12:38:33,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 598 transitions. [2021-11-23 12:38:33,897 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 598 transitions. Word has length 88 [2021-11-23 12:38:33,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:38:33,898 INFO L470 AbstractCegarLoop]: Abstraction has 407 states and 598 transitions. [2021-11-23 12:38:33,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:38:33,898 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 598 transitions. [2021-11-23 12:38:33,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-23 12:38:33,900 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:38:33,901 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:38:33,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-23 12:38:33,901 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:38:33,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:38:33,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1738642336, now seen corresponding path program 1 times [2021-11-23 12:38:33,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:38:33,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139477385] [2021-11-23 12:38:33,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:38:33,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:38:33,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:38:33,985 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-23 12:38:33,986 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:38:33,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139477385] [2021-11-23 12:38:33,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139477385] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:38:33,986 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:38:33,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:38:33,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282119788] [2021-11-23 12:38:33,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:38:33,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:38:33,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:38:33,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:38:33,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:38:33,988 INFO L87 Difference]: Start difference. First operand 407 states and 598 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:38:36,001 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 12:38:38,015 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 12:38:38,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:38:38,284 INFO L93 Difference]: Finished difference Result 829 states and 1215 transitions. [2021-11-23 12:38:38,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:38:38,285 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-23 12:38:38,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:38:38,288 INFO L225 Difference]: With dead ends: 829 [2021-11-23 12:38:38,288 INFO L226 Difference]: Without dead ends: 432 [2021-11-23 12:38:38,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:38:38,289 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 32 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-11-23 12:38:38,290 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 470 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 130 Invalid, 2 Unknown, 0 Unchecked, 4.3s Time] [2021-11-23 12:38:38,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2021-11-23 12:38:38,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 407. [2021-11-23 12:38:38,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 406 states have (on average 1.4679802955665024) internal successors, (596), 406 states have internal predecessors, (596), 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) [2021-11-23 12:38:38,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 596 transitions. [2021-11-23 12:38:38,305 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 596 transitions. Word has length 88 [2021-11-23 12:38:38,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:38:38,306 INFO L470 AbstractCegarLoop]: Abstraction has 407 states and 596 transitions. [2021-11-23 12:38:38,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:38:38,306 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 596 transitions. [2021-11-23 12:38:38,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-23 12:38:38,308 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:38:38,308 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:38:38,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-23 12:38:38,309 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:38:38,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:38:38,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1967523725, now seen corresponding path program 1 times [2021-11-23 12:38:38,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:38:38,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12709638] [2021-11-23 12:38:38,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:38:38,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:38:38,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:38:38,425 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-23 12:38:38,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:38:38,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12709638] [2021-11-23 12:38:38,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12709638] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:38:38,426 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:38:38,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:38:38,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983338617] [2021-11-23 12:38:38,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:38:38,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:38:38,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:38:38,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:38:38,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:38:38,429 INFO L87 Difference]: Start difference. First operand 407 states and 596 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:38:40,443 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 12:38:42,456 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 12:38:42,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:38:42,718 INFO L93 Difference]: Finished difference Result 678 states and 992 transitions. [2021-11-23 12:38:42,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:38:42,719 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-23 12:38:42,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:38:42,723 INFO L225 Difference]: With dead ends: 678 [2021-11-23 12:38:42,723 INFO L226 Difference]: Without dead ends: 425 [2021-11-23 12:38:42,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:38:42,725 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 25 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-11-23 12:38:42,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 462 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 125 Invalid, 2 Unknown, 0 Unchecked, 4.3s Time] [2021-11-23 12:38:42,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2021-11-23 12:38:42,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 407. [2021-11-23 12:38:42,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 406 states have (on average 1.4630541871921183) internal successors, (594), 406 states have internal predecessors, (594), 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) [2021-11-23 12:38:42,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 594 transitions. [2021-11-23 12:38:42,743 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 594 transitions. Word has length 88 [2021-11-23 12:38:42,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:38:42,744 INFO L470 AbstractCegarLoop]: Abstraction has 407 states and 594 transitions. [2021-11-23 12:38:42,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:38:42,744 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 594 transitions. [2021-11-23 12:38:42,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-23 12:38:42,746 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:38:42,746 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:38:42,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-23 12:38:42,747 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:38:42,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:38:42,748 INFO L85 PathProgramCache]: Analyzing trace with hash 730673667, now seen corresponding path program 1 times [2021-11-23 12:38:42,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:38:42,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126816125] [2021-11-23 12:38:42,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:38:42,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:38:42,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:38:42,842 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-23 12:38:42,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:38:42,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126816125] [2021-11-23 12:38:42,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126816125] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:38:42,843 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:38:42,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:38:42,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048380969] [2021-11-23 12:38:42,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:38:42,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:38:42,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:38:42,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:38:42,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:38:42,845 INFO L87 Difference]: Start difference. First operand 407 states and 594 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:38:44,860 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 12:38:46,880 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 12:38:47,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:38:47,253 INFO L93 Difference]: Finished difference Result 902 states and 1319 transitions. [2021-11-23 12:38:47,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:38:47,253 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-11-23 12:38:47,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:38:47,257 INFO L225 Difference]: With dead ends: 902 [2021-11-23 12:38:47,257 INFO L226 Difference]: Without dead ends: 505 [2021-11-23 12:38:47,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:38:47,258 INFO L933 BasicCegarLoop]: 218 mSDtfsCounter, 77 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-11-23 12:38:47,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 518 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 215 Invalid, 2 Unknown, 0 Unchecked, 4.4s Time] [2021-11-23 12:38:47,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2021-11-23 12:38:47,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 407. [2021-11-23 12:38:47,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 406 states have (on average 1.458128078817734) internal successors, (592), 406 states have internal predecessors, (592), 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) [2021-11-23 12:38:47,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 592 transitions. [2021-11-23 12:38:47,273 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 592 transitions. Word has length 89 [2021-11-23 12:38:47,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:38:47,274 INFO L470 AbstractCegarLoop]: Abstraction has 407 states and 592 transitions. [2021-11-23 12:38:47,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:38:47,274 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 592 transitions. [2021-11-23 12:38:47,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-23 12:38:47,276 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:38:47,276 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:38:47,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-23 12:38:47,277 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:38:47,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:38:47,277 INFO L85 PathProgramCache]: Analyzing trace with hash 978820161, now seen corresponding path program 1 times [2021-11-23 12:38:47,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:38:47,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500732461] [2021-11-23 12:38:47,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:38:47,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:38:47,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:38:47,360 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-23 12:38:47,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:38:47,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500732461] [2021-11-23 12:38:47,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500732461] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:38:47,361 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:38:47,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:38:47,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264701679] [2021-11-23 12:38:47,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:38:47,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:38:47,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:38:47,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:38:47,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:38:47,363 INFO L87 Difference]: Start difference. First operand 407 states and 592 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) [2021-11-23 12:38:49,376 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 12:38:49,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:38:49,418 INFO L93 Difference]: Finished difference Result 806 states and 1179 transitions. [2021-11-23 12:38:49,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:38:49,419 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 89 [2021-11-23 12:38:49,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:38:49,422 INFO L225 Difference]: With dead ends: 806 [2021-11-23 12:38:49,423 INFO L226 Difference]: Without dead ends: 555 [2021-11-23 12:38:49,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:38:49,424 INFO L933 BasicCegarLoop]: 312 mSDtfsCounter, 122 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:38:49,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 468 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 17 Invalid, 1 Unknown, 0 Unchecked, 2.0s Time] [2021-11-23 12:38:49,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2021-11-23 12:38:49,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 555. [2021-11-23 12:38:49,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 554 states have (on average 1.4530685920577617) internal successors, (805), 554 states have internal predecessors, (805), 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) [2021-11-23 12:38:49,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 805 transitions. [2021-11-23 12:38:49,444 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 805 transitions. Word has length 89 [2021-11-23 12:38:49,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:38:49,444 INFO L470 AbstractCegarLoop]: Abstraction has 555 states and 805 transitions. [2021-11-23 12:38:49,444 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) [2021-11-23 12:38:49,445 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 805 transitions. [2021-11-23 12:38:49,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-23 12:38:49,447 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:38:49,447 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:38:49,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-23 12:38:49,447 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:38:49,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:38:49,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1317014729, now seen corresponding path program 1 times [2021-11-23 12:38:49,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:38:49,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462892434] [2021-11-23 12:38:49,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:38:49,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:38:49,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:38:49,518 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-11-23 12:38:49,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:38:49,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462892434] [2021-11-23 12:38:49,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462892434] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:38:49,519 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:38:49,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:38:49,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44523068] [2021-11-23 12:38:49,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:38:49,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:38:49,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:38:49,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:38:49,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:38:49,521 INFO L87 Difference]: Start difference. First operand 555 states and 805 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2021-11-23 12:38:51,532 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 12:38:51,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:38:51,592 INFO L93 Difference]: Finished difference Result 1101 states and 1604 transitions. [2021-11-23 12:38:51,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:38:51,593 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 91 [2021-11-23 12:38:51,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:38:51,597 INFO L225 Difference]: With dead ends: 1101 [2021-11-23 12:38:51,598 INFO L226 Difference]: Without dead ends: 702 [2021-11-23 12:38:51,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:38:51,600 INFO L933 BasicCegarLoop]: 311 mSDtfsCounter, 126 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:38:51,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 467 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 17 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2021-11-23 12:38:51,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2021-11-23 12:38:51,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 702. [2021-11-23 12:38:51,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 701 states have (on average 1.4507845934379457) internal successors, (1017), 701 states have internal predecessors, (1017), 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) [2021-11-23 12:38:51,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 1017 transitions. [2021-11-23 12:38:51,623 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 1017 transitions. Word has length 91 [2021-11-23 12:38:51,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:38:51,624 INFO L470 AbstractCegarLoop]: Abstraction has 702 states and 1017 transitions. [2021-11-23 12:38:51,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2021-11-23 12:38:51,624 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 1017 transitions. [2021-11-23 12:38:51,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-23 12:38:51,627 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:38:51,627 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:38:51,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-23 12:38:51,627 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:38:51,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:38:51,628 INFO L85 PathProgramCache]: Analyzing trace with hash -761801560, now seen corresponding path program 1 times [2021-11-23 12:38:51,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:38:51,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033089525] [2021-11-23 12:38:51,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:38:51,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:38:52,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 12:38:52,200 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 12:38:52,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 12:38:52,914 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 12:38:52,915 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 12:38:52,916 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 12:38:52,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-23 12:38:52,922 INFO L732 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:38:52,926 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 12:38:53,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 12:38:53 BoogieIcfgContainer [2021-11-23 12:38:53,136 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 12:38:53,137 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 12:38:53,137 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 12:38:53,137 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 12:38:53,138 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:37:19" (3/4) ... [2021-11-23 12:38:53,142 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-23 12:38:53,142 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 12:38:53,143 INFO L158 Benchmark]: Toolchain (without parser) took 98707.18ms. Allocated memory was 98.6MB in the beginning and 132.1MB in the end (delta: 33.6MB). Free memory was 68.1MB in the beginning and 88.3MB in the end (delta: -20.2MB). Peak memory consumption was 16.2MB. Max. memory is 16.1GB. [2021-11-23 12:38:53,143 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 81.8MB. Free memory was 49.6MB in the beginning and 49.6MB in the end (delta: 37.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 12:38:53,144 INFO L158 Benchmark]: CACSL2BoogieTranslator took 764.69ms. Allocated memory is still 98.6MB. Free memory was 68.0MB in the beginning and 38.2MB in the end (delta: 29.8MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2021-11-23 12:38:53,144 INFO L158 Benchmark]: Boogie Procedure Inliner took 146.20ms. Allocated memory is still 98.6MB. Free memory was 38.2MB in the beginning and 72.3MB in the end (delta: -34.1MB). Peak memory consumption was 9.0MB. Max. memory is 16.1GB. [2021-11-23 12:38:53,144 INFO L158 Benchmark]: Boogie Preprocessor took 112.79ms. Allocated memory is still 98.6MB. Free memory was 72.3MB in the beginning and 65.7MB in the end (delta: 6.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-23 12:38:53,145 INFO L158 Benchmark]: RCFGBuilder took 3725.95ms. Allocated memory was 98.6MB in the beginning and 132.1MB in the end (delta: 33.6MB). Free memory was 65.7MB in the beginning and 93.0MB in the end (delta: -27.4MB). Peak memory consumption was 42.4MB. Max. memory is 16.1GB. [2021-11-23 12:38:53,145 INFO L158 Benchmark]: TraceAbstraction took 93943.98ms. Allocated memory is still 132.1MB. Free memory was 93.0MB in the beginning and 88.3MB in the end (delta: 4.7MB). Peak memory consumption was 65.5MB. Max. memory is 16.1GB. [2021-11-23 12:38:53,146 INFO L158 Benchmark]: Witness Printer took 5.05ms. Allocated memory is still 132.1MB. Free memory is still 88.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 12:38:53,147 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 81.8MB. Free memory was 49.6MB in the beginning and 49.6MB in the end (delta: 37.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 764.69ms. Allocated memory is still 98.6MB. Free memory was 68.0MB in the beginning and 38.2MB in the end (delta: 29.8MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 146.20ms. Allocated memory is still 98.6MB. Free memory was 38.2MB in the beginning and 72.3MB in the end (delta: -34.1MB). Peak memory consumption was 9.0MB. Max. memory is 16.1GB. * Boogie Preprocessor took 112.79ms. Allocated memory is still 98.6MB. Free memory was 72.3MB in the beginning and 65.7MB in the end (delta: 6.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 3725.95ms. Allocated memory was 98.6MB in the beginning and 132.1MB in the end (delta: 33.6MB). Free memory was 65.7MB in the beginning and 93.0MB in the end (delta: -27.4MB). Peak memory consumption was 42.4MB. Max. memory is 16.1GB. * TraceAbstraction took 93943.98ms. Allocated memory is still 132.1MB. Free memory was 93.0MB in the beginning and 88.3MB in the end (delta: 4.7MB). Peak memory consumption was 65.5MB. Max. memory is 16.1GB. * Witness Printer took 5.05ms. Allocated memory is still 132.1MB. Free memory is still 88.3MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1665]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseAnd at line 1360. Possible FailurePath: [L1054] static int init = 1; [L1055] static SSL_METHOD SSLv3_client_data ; VAL [init=1, SSLv3_client_data={4:0}] [L1077] SSL *s = (SSL*)malloc(sizeof(SSL)) ; [L1081] s->s3 = malloc(sizeof(struct ssl3_state_st)) [L1082] s->ctx = malloc(sizeof(SSL_CTX)) [L1083] s->session = malloc(sizeof(SSL_SESSION)) [L1084] s->state = 12292 [L1085] s->version = __VERIFIER_nondet_int() [L1087] s->info_callback = (void (*)()) __VERIFIER_nondet_ulong() [L1088] EXPR s->ctx [L1088] (s->ctx)->info_callback = (void (*)()) __VERIFIER_nondet_ulong() [L1089] s->init_buf = (BUF_MEM *)__VERIFIER_nondet_ulong() [L1090] s->bbio = (BIO *) __VERIFIER_nondet_ulong() [L1091] s->wbio = (BIO *) __VERIFIER_nondet_ulong() [L1092] EXPR s->s3 [L1092] (s->s3)->flags = __VERIFIER_nondet_long() [L1093] EXPR s->s3 [L1093] (s->s3)->tmp.cert_req = __VERIFIER_nondet_int() [L1094] EXPR s->s3 [L1094] (s->s3)->tmp.new_cipher = malloc(sizeof(struct ssl_cipher_st)) [L1095] EXPR s->s3 [L1095] EXPR (s->s3)->tmp.new_cipher [L1095] ((s->s3)->tmp.new_cipher)->algorithms = __VERIFIER_nondet_ulong() [L1096] EXPR s->s3 [L1096] (s->s3)->tmp.next_state = __VERIFIER_nondet_int() [L1098] CALL ssl3_connect(s) [L1104] BUF_MEM *buf ; [L1105] unsigned long tmp ; [L1106] unsigned long l ; [L1107] long num1 ; [L1108] void (*cb)() ; [L1109] int ret ; [L1110] int new_state ; [L1111] int state ; [L1112] int skip ; [L1113] int tmp___1 = __VERIFIER_nondet_int() ; [L1114] int tmp___2 = __VERIFIER_nondet_int() ; [L1115] int tmp___3 = __VERIFIER_nondet_int() ; [L1116] int tmp___4 = __VERIFIER_nondet_int() ; [L1117] int tmp___5 = __VERIFIER_nondet_int() ; [L1118] int tmp___6 = __VERIFIER_nondet_int() ; [L1119] int tmp___7 = __VERIFIER_nondet_int() ; [L1120] int tmp___8 = __VERIFIER_nondet_int() ; [L1121] long tmp___9 = __VERIFIER_nondet_long() ; [L1122] int blastFlag ; [L1125] blastFlag = 0 [L1126] s->hit=__VERIFIER_nondet_int () [L1127] s->state = 12292 [L1128] tmp = __VERIFIER_nondet_int() [L1129] cb = (void (*)())((void *)0) [L1130] ret = -1 [L1131] skip = 0 [L1132] EXPR s->info_callback VAL [={0:0}, blastFlag=0, init=1, ret=-1, s={-8:0}, s={-8:0}, s->info_callback={0:-2147483648}, skip=0, SSLv3_client_data={4:0}, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1132] COND TRUE (unsigned long )s->info_callback != (unsigned long )((void *)0) [L1133] EXPR s->info_callback [L1133] cb = s->info_callback [L1141] EXPR s->in_handshake [L1141] s->in_handshake += 1 [L1142] COND FALSE !(tmp___1 & 12288) VAL [={0:-2147483648}, blastFlag=0, init=1, ret=-1, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1152] COND TRUE 1 VAL [={0:-2147483648}, blastFlag=0, init=1, ret=-1, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1154] EXPR s->state [L1154] state = s->state [L1155] EXPR s->state VAL [={0:-2147483648}, blastFlag=0, init=1, ret=-1, s={-8:0}, s={-8:0}, s->state=12292, skip=0, SSLv3_client_data={4:0}, state=12292, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1155] COND TRUE s->state == 12292 [L1258] s->new_session = 1 [L1259] s->state = 4096 [L1260] EXPR s->ctx [L1260] EXPR (s->ctx)->stats.sess_connect_renegotiate [L1260] (s->ctx)->stats.sess_connect_renegotiate += 1 [L1265] s->server = 0 VAL [={0:-2147483648}, blastFlag=0, init=1, ret=-1, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=12292, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1266] COND TRUE (unsigned long )cb != (unsigned long )((void *)0) VAL [={0:-2147483648}, blastFlag=0, init=1, ret=-1, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=12292, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1271] EXPR s->version VAL [={0:-2147483648}, blastFlag=0, init=1, ret=-1, s={-8:0}, s={-8:0}, s->version=6, skip=0, SSLv3_client_data={4:0}, state=12292, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1271] COND FALSE !((s->version & 65280) != 768) [L1277] s->type = 4096 [L1278] EXPR s->init_buf VAL [={0:-2147483648}, blastFlag=0, init=1, ret=-1, s={-8:0}, s={-8:0}, s->init_buf={0:5}, skip=0, SSLv3_client_data={4:0}, state=12292, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1278] COND FALSE !((unsigned long )s->init_buf == (unsigned long )((void *)0)) [L1296] COND FALSE !(! tmp___4) VAL [={0:-2147483648}, blastFlag=0, init=1, ret=-1, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=12292, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1302] COND FALSE !(! tmp___5) [L1308] s->state = 4368 [L1309] EXPR s->ctx [L1309] EXPR (s->ctx)->stats.sess_connect [L1309] (s->ctx)->stats.sess_connect += 1 [L1310] s->init_num = 0 VAL [={0:-2147483648}, blastFlag=0, init=1, ret=-1, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=12292, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1624] EXPR s->s3 [L1624] EXPR (s->s3)->tmp.reuse_message VAL [={0:-2147483648}, (s->s3)->tmp.reuse_message=4294967316, blastFlag=0, init=1, ret=-1, s={-8:0}, s={-8:0}, s->s3={-6:0}, skip=0, SSLv3_client_data={4:0}, state=12292, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1624] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1653] skip = 0 VAL [={0:-2147483648}, blastFlag=0, init=1, ret=-1, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=12292, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1152] COND TRUE 1 VAL [={0:-2147483648}, blastFlag=0, init=1, ret=-1, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=12292, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1154] EXPR s->state [L1154] state = s->state [L1155] EXPR s->state VAL [={0:-2147483648}, blastFlag=0, init=1, ret=-1, s={-8:0}, s={-8:0}, s->state=4368, skip=0, SSLv3_client_data={4:0}, state=4368, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1155] COND FALSE !(s->state == 12292) [L1158] EXPR s->state VAL [={0:-2147483648}, blastFlag=0, init=1, ret=-1, s={-8:0}, s={-8:0}, s->state=4368, skip=0, SSLv3_client_data={4:0}, state=4368, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1158] COND FALSE !(s->state == 16384) [L1161] EXPR s->state VAL [={0:-2147483648}, blastFlag=0, init=1, ret=-1, s={-8:0}, s={-8:0}, s->state=4368, skip=0, SSLv3_client_data={4:0}, state=4368, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1161] COND FALSE !(s->state == 4096) [L1164] EXPR s->state VAL [={0:-2147483648}, blastFlag=0, init=1, ret=-1, s={-8:0}, s={-8:0}, s->state=4368, skip=0, SSLv3_client_data={4:0}, state=4368, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1164] COND FALSE !(s->state == 20480) [L1167] EXPR s->state VAL [={0:-2147483648}, blastFlag=0, init=1, ret=-1, s={-8:0}, s={-8:0}, s->state=4368, skip=0, SSLv3_client_data={4:0}, state=4368, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1167] COND FALSE !(s->state == 4099) [L1170] EXPR s->state VAL [={0:-2147483648}, blastFlag=0, init=1, ret=-1, s={-8:0}, s={-8:0}, s->state=4368, skip=0, SSLv3_client_data={4:0}, state=4368, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1170] COND TRUE s->state == 4368 [L1314] s->shutdown = 0 [L1315] ret = __VERIFIER_nondet_int() [L1316] COND TRUE blastFlag == 0 [L1317] blastFlag = 1 VAL [={0:-2147483648}, blastFlag=1, init=1, ret=11, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=4368, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1325] COND FALSE !(ret <= 0) [L1330] s->state = 4384 [L1331] s->init_num = 0 [L1332] EXPR s->bbio [L1332] EXPR s->wbio VAL [={0:-2147483648}, blastFlag=1, init=1, ret=11, s={-8:0}, s={-8:0}, s->bbio={0:-15}, s->wbio={0:-13}, skip=0, SSLv3_client_data={4:0}, state=4368, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1332] COND TRUE (unsigned long )s->bbio != (unsigned long )s->wbio [L1624] EXPR s->s3 [L1624] EXPR (s->s3)->tmp.reuse_message VAL [={0:-2147483648}, (s->s3)->tmp.reuse_message=4294967316, blastFlag=1, init=1, ret=11, s={-8:0}, s={-8:0}, s->s3={-6:0}, skip=0, SSLv3_client_data={4:0}, state=4368, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1624] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1653] skip = 0 VAL [={0:-2147483648}, blastFlag=1, init=1, ret=11, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=4368, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1152] COND TRUE 1 VAL [={0:-2147483648}, blastFlag=1, init=1, ret=11, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=4368, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1154] EXPR s->state [L1154] state = s->state [L1155] EXPR s->state VAL [={0:-2147483648}, blastFlag=1, init=1, ret=11, s={-8:0}, s={-8:0}, s->state=4384, skip=0, SSLv3_client_data={4:0}, state=4384, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1155] COND FALSE !(s->state == 12292) [L1158] EXPR s->state VAL [={0:-2147483648}, blastFlag=1, init=1, ret=11, s={-8:0}, s={-8:0}, s->state=4384, skip=0, SSLv3_client_data={4:0}, state=4384, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1158] COND FALSE !(s->state == 16384) [L1161] EXPR s->state VAL [={0:-2147483648}, blastFlag=1, init=1, ret=11, s={-8:0}, s={-8:0}, s->state=4384, skip=0, SSLv3_client_data={4:0}, state=4384, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1161] COND FALSE !(s->state == 4096) [L1164] EXPR s->state VAL [={0:-2147483648}, blastFlag=1, init=1, ret=11, s={-8:0}, s={-8:0}, s->state=4384, skip=0, SSLv3_client_data={4:0}, state=4384, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1164] COND FALSE !(s->state == 20480) [L1167] EXPR s->state VAL [={0:-2147483648}, blastFlag=1, init=1, ret=11, s={-8:0}, s={-8:0}, s->state=4384, skip=0, SSLv3_client_data={4:0}, state=4384, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1167] COND FALSE !(s->state == 4099) [L1170] EXPR s->state VAL [={0:-2147483648}, blastFlag=1, init=1, ret=11, s={-8:0}, s={-8:0}, s->state=4384, skip=0, SSLv3_client_data={4:0}, state=4384, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1170] COND FALSE !(s->state == 4368) [L1173] EXPR s->state VAL [={0:-2147483648}, blastFlag=1, init=1, ret=11, s={-8:0}, s={-8:0}, s->state=4384, skip=0, SSLv3_client_data={4:0}, state=4384, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1173] COND FALSE !(s->state == 4369) [L1176] EXPR s->state VAL [={0:-2147483648}, blastFlag=1, init=1, ret=11, s={-8:0}, s={-8:0}, s->state=4384, skip=0, SSLv3_client_data={4:0}, state=4384, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1176] COND TRUE s->state == 4384 [L1340] ret = __VERIFIER_nondet_int() [L1341] COND TRUE blastFlag == 1 [L1342] blastFlag = 2 VAL [={0:-2147483648}, blastFlag=2, init=1, ret=1, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=4384, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1346] COND FALSE !(ret <= 0) [L1351] s->hit VAL [={0:-2147483648}, blastFlag=2, init=1, ret=1, s={-8:0}, s={-8:0}, s->hit=0, skip=0, SSLv3_client_data={4:0}, state=4384, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1351] COND FALSE !(s->hit) [L1354] s->state = 4400 VAL [={0:-2147483648}, blastFlag=2, init=1, ret=1, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=4384, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1356] s->init_num = 0 VAL [={0:-2147483648}, blastFlag=2, init=1, ret=1, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=4384, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1624] EXPR s->s3 [L1624] EXPR (s->s3)->tmp.reuse_message VAL [={0:-2147483648}, (s->s3)->tmp.reuse_message=4294967316, blastFlag=2, init=1, ret=1, s={-8:0}, s={-8:0}, s->s3={-6:0}, skip=0, SSLv3_client_data={4:0}, state=4384, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1624] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1653] skip = 0 VAL [={0:-2147483648}, blastFlag=2, init=1, ret=1, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=4384, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1152] COND TRUE 1 VAL [={0:-2147483648}, blastFlag=2, init=1, ret=1, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=4384, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1154] EXPR s->state [L1154] state = s->state [L1155] EXPR s->state VAL [={0:-2147483648}, blastFlag=2, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4400, skip=0, SSLv3_client_data={4:0}, state=4400, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1155] COND FALSE !(s->state == 12292) [L1158] EXPR s->state VAL [={0:-2147483648}, blastFlag=2, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4400, skip=0, SSLv3_client_data={4:0}, state=4400, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1158] COND FALSE !(s->state == 16384) [L1161] EXPR s->state VAL [={0:-2147483648}, blastFlag=2, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4400, skip=0, SSLv3_client_data={4:0}, state=4400, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1161] COND FALSE !(s->state == 4096) [L1164] EXPR s->state VAL [={0:-2147483648}, blastFlag=2, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4400, skip=0, SSLv3_client_data={4:0}, state=4400, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1164] COND FALSE !(s->state == 20480) [L1167] EXPR s->state VAL [={0:-2147483648}, blastFlag=2, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4400, skip=0, SSLv3_client_data={4:0}, state=4400, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1167] COND FALSE !(s->state == 4099) [L1170] EXPR s->state VAL [={0:-2147483648}, blastFlag=2, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4400, skip=0, SSLv3_client_data={4:0}, state=4400, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1170] COND FALSE !(s->state == 4368) [L1173] EXPR s->state VAL [={0:-2147483648}, blastFlag=2, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4400, skip=0, SSLv3_client_data={4:0}, state=4400, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1173] COND FALSE !(s->state == 4369) [L1176] EXPR s->state VAL [={0:-2147483648}, blastFlag=2, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4400, skip=0, SSLv3_client_data={4:0}, state=4400, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1176] COND FALSE !(s->state == 4384) [L1179] EXPR s->state VAL [={0:-2147483648}, blastFlag=2, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4400, skip=0, SSLv3_client_data={4:0}, state=4400, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1179] COND FALSE !(s->state == 4385) [L1182] EXPR s->state VAL [={0:-2147483648}, blastFlag=2, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4400, skip=0, SSLv3_client_data={4:0}, state=4400, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1182] COND TRUE s->state == 4400 [L1360] EXPR s->s3 [L1360] EXPR (s->s3)->tmp.new_cipher [L1360] EXPR ((s->s3)->tmp.new_cipher)->algorithms VAL [={0:-2147483648}, ((s->s3)->tmp.new_cipher)->algorithms=0, (s->s3)->tmp.new_cipher={-7:0}, blastFlag=2, init=1, ret=1, s={-8:0}, s={-8:0}, s->s3={-6:0}, skip=0, SSLv3_client_data={4:0}, state=4400, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1360] COND FALSE !(((s->s3)->tmp.new_cipher)->algorithms & 256UL) [L1363] ret = __VERIFIER_nondet_int() [L1364] COND TRUE blastFlag == 2 [L1365] blastFlag = 3 VAL [={0:-2147483648}, blastFlag=3, init=1, ret=18, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=4400, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1369] COND FALSE !(ret <= 0) VAL [={0:-2147483648}, blastFlag=3, init=1, ret=18, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=4400, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1375] s->state = 4416 [L1376] s->init_num = 0 VAL [={0:-2147483648}, blastFlag=3, init=1, ret=18, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=4400, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1624] EXPR s->s3 [L1624] EXPR (s->s3)->tmp.reuse_message VAL [={0:-2147483648}, (s->s3)->tmp.reuse_message=4294967316, blastFlag=3, init=1, ret=18, s={-8:0}, s={-8:0}, s->s3={-6:0}, skip=0, SSLv3_client_data={4:0}, state=4400, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1624] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1653] skip = 0 VAL [={0:-2147483648}, blastFlag=3, init=1, ret=18, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=4400, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1152] COND TRUE 1 VAL [={0:-2147483648}, blastFlag=3, init=1, ret=18, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=4400, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1154] EXPR s->state [L1154] state = s->state [L1155] EXPR s->state VAL [={0:-2147483648}, blastFlag=3, init=1, ret=18, s={-8:0}, s={-8:0}, s->state=4416, skip=0, SSLv3_client_data={4:0}, state=4416, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1155] COND FALSE !(s->state == 12292) [L1158] EXPR s->state VAL [={0:-2147483648}, blastFlag=3, init=1, ret=18, s={-8:0}, s={-8:0}, s->state=4416, skip=0, SSLv3_client_data={4:0}, state=4416, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1158] COND FALSE !(s->state == 16384) [L1161] EXPR s->state VAL [={0:-2147483648}, blastFlag=3, init=1, ret=18, s={-8:0}, s={-8:0}, s->state=4416, skip=0, SSLv3_client_data={4:0}, state=4416, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1161] COND FALSE !(s->state == 4096) [L1164] EXPR s->state VAL [={0:-2147483648}, blastFlag=3, init=1, ret=18, s={-8:0}, s={-8:0}, s->state=4416, skip=0, SSLv3_client_data={4:0}, state=4416, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1164] COND FALSE !(s->state == 20480) [L1167] EXPR s->state VAL [={0:-2147483648}, blastFlag=3, init=1, ret=18, s={-8:0}, s={-8:0}, s->state=4416, skip=0, SSLv3_client_data={4:0}, state=4416, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1167] COND FALSE !(s->state == 4099) [L1170] EXPR s->state VAL [={0:-2147483648}, blastFlag=3, init=1, ret=18, s={-8:0}, s={-8:0}, s->state=4416, skip=0, SSLv3_client_data={4:0}, state=4416, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1170] COND FALSE !(s->state == 4368) [L1173] EXPR s->state VAL [={0:-2147483648}, blastFlag=3, init=1, ret=18, s={-8:0}, s={-8:0}, s->state=4416, skip=0, SSLv3_client_data={4:0}, state=4416, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1173] COND FALSE !(s->state == 4369) [L1176] EXPR s->state VAL [={0:-2147483648}, blastFlag=3, init=1, ret=18, s={-8:0}, s={-8:0}, s->state=4416, skip=0, SSLv3_client_data={4:0}, state=4416, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1176] COND FALSE !(s->state == 4384) [L1179] EXPR s->state VAL [={0:-2147483648}, blastFlag=3, init=1, ret=18, s={-8:0}, s={-8:0}, s->state=4416, skip=0, SSLv3_client_data={4:0}, state=4416, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1179] COND FALSE !(s->state == 4385) [L1182] EXPR s->state VAL [={0:-2147483648}, blastFlag=3, init=1, ret=18, s={-8:0}, s={-8:0}, s->state=4416, skip=0, SSLv3_client_data={4:0}, state=4416, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1182] COND FALSE !(s->state == 4400) [L1185] EXPR s->state VAL [={0:-2147483648}, blastFlag=3, init=1, ret=18, s={-8:0}, s={-8:0}, s->state=4416, skip=0, SSLv3_client_data={4:0}, state=4416, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1185] COND FALSE !(s->state == 4401) [L1188] EXPR s->state VAL [={0:-2147483648}, blastFlag=3, init=1, ret=18, s={-8:0}, s={-8:0}, s->state=4416, skip=0, SSLv3_client_data={4:0}, state=4416, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1188] COND TRUE s->state == 4416 [L1380] ret = __VERIFIER_nondet_int() [L1381] COND TRUE blastFlag == 3 [L1382] blastFlag = 4 VAL [={0:-2147483648}, blastFlag=4, init=1, ret=1, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=4416, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1386] COND FALSE !(ret <= 0) [L1391] s->state = 4432 [L1392] s->init_num = 0 VAL [={0:-2147483648}, blastFlag=4, init=1, ret=1, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=4416, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1393] COND FALSE !(! tmp___6) VAL [={0:-2147483648}, blastFlag=4, init=1, ret=1, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=4416, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1624] EXPR s->s3 [L1624] EXPR (s->s3)->tmp.reuse_message VAL [={0:-2147483648}, (s->s3)->tmp.reuse_message=4294967316, blastFlag=4, init=1, ret=1, s={-8:0}, s={-8:0}, s->s3={-6:0}, skip=0, SSLv3_client_data={4:0}, state=4416, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1624] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1653] skip = 0 VAL [={0:-2147483648}, blastFlag=4, init=1, ret=1, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=4416, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1152] COND TRUE 1 VAL [={0:-2147483648}, blastFlag=4, init=1, ret=1, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=4416, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1154] EXPR s->state [L1154] state = s->state [L1155] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4432, skip=0, SSLv3_client_data={4:0}, state=4432, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1155] COND FALSE !(s->state == 12292) [L1158] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4432, skip=0, SSLv3_client_data={4:0}, state=4432, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1158] COND FALSE !(s->state == 16384) [L1161] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4432, skip=0, SSLv3_client_data={4:0}, state=4432, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1161] COND FALSE !(s->state == 4096) [L1164] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4432, skip=0, SSLv3_client_data={4:0}, state=4432, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1164] COND FALSE !(s->state == 20480) [L1167] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4432, skip=0, SSLv3_client_data={4:0}, state=4432, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1167] COND FALSE !(s->state == 4099) [L1170] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4432, skip=0, SSLv3_client_data={4:0}, state=4432, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1170] COND FALSE !(s->state == 4368) [L1173] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4432, skip=0, SSLv3_client_data={4:0}, state=4432, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1173] COND FALSE !(s->state == 4369) [L1176] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4432, skip=0, SSLv3_client_data={4:0}, state=4432, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1176] COND FALSE !(s->state == 4384) [L1179] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4432, skip=0, SSLv3_client_data={4:0}, state=4432, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1179] COND FALSE !(s->state == 4385) [L1182] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4432, skip=0, SSLv3_client_data={4:0}, state=4432, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1182] COND FALSE !(s->state == 4400) [L1185] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4432, skip=0, SSLv3_client_data={4:0}, state=4432, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1185] COND FALSE !(s->state == 4401) [L1188] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4432, skip=0, SSLv3_client_data={4:0}, state=4432, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1188] COND FALSE !(s->state == 4416) [L1191] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4432, skip=0, SSLv3_client_data={4:0}, state=4432, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1191] COND FALSE !(s->state == 4417) [L1194] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4432, skip=0, SSLv3_client_data={4:0}, state=4432, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1194] COND TRUE s->state == 4432 [L1402] ret = __VERIFIER_nondet_int() [L1403] COND TRUE blastFlag == 4 VAL [={0:-2147483648}, blastFlag=4, init=1, ret=0, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=4432, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1665] reach_error() VAL [={0:-2147483648}, blastFlag=4, init=1, ret=0, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=4432, tmp=0, tmp___1=0, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 129 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 93.7s, OverallIterations: 24, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 88.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 38 mSolverCounterUnknown, 1751 SdHoareTripleChecker+Valid, 87.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1751 mSDsluCounter, 11504 SdHoareTripleChecker+Invalid, 85.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6310 mSDsCounter, 130 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3553 IncrementalHoareTripleChecker+Invalid, 3721 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 130 mSolverCounterUnsat, 5194 mSDtfsCounter, 3553 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 126 GetRequests, 46 SyntacticMatches, 19 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=702occurred in iteration=23, InterpolantAutomatonStates: 88, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 23 MinimizatonAttempts, 1480 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 1922 NumberOfCodeBlocks, 1922 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 1787 ConstructedInterpolants, 0 QuantifiedInterpolants, 4711 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 23 InterpolantComputations, 23 PerfectInterpolantSequences, 1532/1532 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-23 12:38:53,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4df04655-80f3-49f2-95cf-504291448e9a/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4df04655-80f3-49f2-95cf-504291448e9a/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4df04655-80f3-49f2-95cf-504291448e9a/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4df04655-80f3-49f2-95cf-504291448e9a/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4df04655-80f3-49f2-95cf-504291448e9a/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/openssl/s3_clnt.blast.02.i.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4df04655-80f3-49f2-95cf-504291448e9a/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4df04655-80f3-49f2-95cf-504291448e9a/bin/uautomizer-wIGwrQj20G --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 cb7820adb8b2f38a9324aaaef54a50c7e172a86afb91c31d3452a676649fd690 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 12:38:56,086 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 12:38:56,090 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 12:38:56,132 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 12:38:56,135 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 12:38:56,139 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 12:38:56,144 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 12:38:56,148 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 12:38:56,152 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 12:38:56,154 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 12:38:56,156 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 12:38:56,160 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 12:38:56,161 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 12:38:56,171 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 12:38:56,173 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 12:38:56,175 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 12:38:56,177 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 12:38:56,178 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 12:38:56,181 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 12:38:56,184 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 12:38:56,187 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 12:38:56,189 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 12:38:56,191 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 12:38:56,192 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 12:38:56,197 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 12:38:56,205 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 12:38:56,206 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 12:38:56,208 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 12:38:56,210 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 12:38:56,211 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 12:38:56,212 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 12:38:56,213 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 12:38:56,216 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 12:38:56,218 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 12:38:56,223 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 12:38:56,224 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 12:38:56,225 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 12:38:56,226 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 12:38:56,226 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 12:38:56,229 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 12:38:56,230 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 12:38:56,234 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4df04655-80f3-49f2-95cf-504291448e9a/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-23 12:38:56,288 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 12:38:56,288 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 12:38:56,289 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 12:38:56,289 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 12:38:56,292 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 12:38:56,292 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 12:38:56,292 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 12:38:56,293 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 12:38:56,293 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 12:38:56,293 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 12:38:56,295 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 12:38:56,295 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 12:38:56,295 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 12:38:56,296 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 12:38:56,296 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 12:38:56,296 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 12:38:56,296 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 12:38:56,297 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 12:38:56,297 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 12:38:56,297 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 12:38:56,297 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 12:38:56,298 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 12:38:56,298 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 12:38:56,298 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 12:38:56,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:38:56,299 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 12:38:56,299 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 12:38:56,299 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 12:38:56,299 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-23 12:38:56,300 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 12:38:56,300 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 12:38:56,300 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 12:38:56,301 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 12:38:56,301 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 12:38:56,301 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 12:38:56,302 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4df04655-80f3-49f2-95cf-504291448e9a/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4df04655-80f3-49f2-95cf-504291448e9a/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb7820adb8b2f38a9324aaaef54a50c7e172a86afb91c31d3452a676649fd690 [2021-11-23 12:38:56,743 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 12:38:56,769 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 12:38:56,773 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 12:38:56,775 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 12:38:56,776 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 12:38:56,777 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4df04655-80f3-49f2-95cf-504291448e9a/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/openssl/s3_clnt.blast.02.i.cil-1.c [2021-11-23 12:38:56,857 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4df04655-80f3-49f2-95cf-504291448e9a/bin/uautomizer-wIGwrQj20G/data/19c71e563/ca8bf7f93af04d31a1a08f495c9999a1/FLAGc0bc9ba20 [2021-11-23 12:38:57,656 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 12:38:57,656 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4df04655-80f3-49f2-95cf-504291448e9a/sv-benchmarks/c/openssl/s3_clnt.blast.02.i.cil-1.c [2021-11-23 12:38:57,709 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4df04655-80f3-49f2-95cf-504291448e9a/bin/uautomizer-wIGwrQj20G/data/19c71e563/ca8bf7f93af04d31a1a08f495c9999a1/FLAGc0bc9ba20 [2021-11-23 12:38:57,824 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4df04655-80f3-49f2-95cf-504291448e9a/bin/uautomizer-wIGwrQj20G/data/19c71e563/ca8bf7f93af04d31a1a08f495c9999a1 [2021-11-23 12:38:57,828 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 12:38:57,833 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 12:38:57,836 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 12:38:57,836 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 12:38:57,842 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 12:38:57,843 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:38:57" (1/1) ... [2021-11-23 12:38:57,848 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2aa153b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:38:57, skipping insertion in model container [2021-11-23 12:38:57,849 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:38:57" (1/1) ... [2021-11-23 12:38:57,858 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 12:38:57,948 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 12:38:58,520 WARN L230 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_4df04655-80f3-49f2-95cf-504291448e9a/sv-benchmarks/c/openssl/s3_clnt.blast.02.i.cil-1.c[65397,65410] [2021-11-23 12:38:58,539 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:38:58,567 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-23 12:38:58,581 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 12:38:58,670 WARN L230 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_4df04655-80f3-49f2-95cf-504291448e9a/sv-benchmarks/c/openssl/s3_clnt.blast.02.i.cil-1.c[65397,65410] [2021-11-23 12:38:58,673 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:38:58,681 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 12:38:58,872 WARN L230 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_4df04655-80f3-49f2-95cf-504291448e9a/sv-benchmarks/c/openssl/s3_clnt.blast.02.i.cil-1.c[65397,65410] [2021-11-23 12:38:58,875 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:38:58,895 INFO L208 MainTranslator]: Completed translation [2021-11-23 12:38:58,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:38:58 WrapperNode [2021-11-23 12:38:58,906 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 12:38:58,907 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 12:38:58,907 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 12:38:58,907 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 12:38:58,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:38:58" (1/1) ... [2021-11-23 12:38:58,963 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:38:58" (1/1) ... [2021-11-23 12:38:59,031 INFO L137 Inliner]: procedures = 35, calls = 217, calls flagged for inlining = 7, calls inlined = 3, statements flattened = 689 [2021-11-23 12:38:59,041 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 12:38:59,042 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 12:38:59,043 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 12:38:59,043 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 12:38:59,060 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:38:58" (1/1) ... [2021-11-23 12:38:59,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:38:58" (1/1) ... [2021-11-23 12:38:59,074 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:38:58" (1/1) ... [2021-11-23 12:38:59,074 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:38:58" (1/1) ... [2021-11-23 12:38:59,127 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:38:58" (1/1) ... [2021-11-23 12:38:59,137 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:38:58" (1/1) ... [2021-11-23 12:38:59,142 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:38:58" (1/1) ... [2021-11-23 12:38:59,150 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 12:38:59,151 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 12:38:59,152 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 12:38:59,165 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 12:38:59,167 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:38:58" (1/1) ... [2021-11-23 12:38:59,176 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:38:59,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4df04655-80f3-49f2-95cf-504291448e9a/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:38:59,199 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4df04655-80f3-49f2-95cf-504291448e9a/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 12:38:59,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4df04655-80f3-49f2-95cf-504291448e9a/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 12:38:59,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 12:38:59,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 12:38:59,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 12:38:59,246 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-23 12:38:59,246 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 12:38:59,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 12:38:59,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 12:38:59,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 12:38:59,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-23 12:38:59,428 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 12:38:59,430 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 12:38:59,457 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-23 12:39:09,602 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2021-11-23 12:39:09,602 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2021-11-23 12:39:09,602 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 12:39:09,612 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 12:39:09,612 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 12:39:09,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:39:09 BoogieIcfgContainer [2021-11-23 12:39:09,615 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 12:39:09,617 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 12:39:09,617 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 12:39:09,621 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 12:39:09,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 12:38:57" (1/3) ... [2021-11-23 12:39:09,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4daa0ef6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:39:09, skipping insertion in model container [2021-11-23 12:39:09,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:38:58" (2/3) ... [2021-11-23 12:39:09,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4daa0ef6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:39:09, skipping insertion in model container [2021-11-23 12:39:09,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:39:09" (3/3) ... [2021-11-23 12:39:09,625 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt.blast.02.i.cil-1.c [2021-11-23 12:39:09,631 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 12:39:09,632 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 12:39:09,685 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 12:39:09,693 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 [2021-11-23 12:39:09,693 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 12:39:09,715 INFO L276 IsEmpty]: Start isEmpty. Operand has 129 states, 127 states have (on average 1.7086614173228347) internal successors, (217), 128 states have internal predecessors, (217), 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) [2021-11-23 12:39:09,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-23 12:39:09,723 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:39:09,724 INFO L514 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] [2021-11-23 12:39:09,725 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:39:09,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:39:09,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1457695037, now seen corresponding path program 1 times [2021-11-23 12:39:09,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:39:09,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [375366687] [2021-11-23 12:39:09,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:39:09,749 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:39:09,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4df04655-80f3-49f2-95cf-504291448e9a/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:39:09,751 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4df04655-80f3-49f2-95cf-504291448e9a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:39:09,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4df04655-80f3-49f2-95cf-504291448e9a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 12:39:10,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:39:10,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 12:39:10,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:39:10,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:39:10,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:39:10,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:39:10,552 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:39:10,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [375366687] [2021-11-23 12:39:10,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [375366687] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:39:10,553 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:39:10,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-23 12:39:10,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51281267] [2021-11-23 12:39:10,556 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:39:10,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:39:10,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:39:10,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:39:10,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:39:10,601 INFO L87 Difference]: Start difference. First operand has 129 states, 127 states have (on average 1.7086614173228347) internal successors, (217), 128 states have internal predecessors, (217), 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 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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) [2021-11-23 12:39:10,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:39:10,870 INFO L93 Difference]: Finished difference Result 485 states and 819 transitions. [2021-11-23 12:39:10,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:39:10,874 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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 [2021-11-23 12:39:10,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:39:10,889 INFO L225 Difference]: With dead ends: 485 [2021-11-23 12:39:10,890 INFO L226 Difference]: Without dead ends: 312 [2021-11-23 12:39:10,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:39:10,899 INFO L933 BasicCegarLoop]: 204 mSDtfsCounter, 358 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:39:10,900 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [358 Valid, 586 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:39:10,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2021-11-23 12:39:10,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2021-11-23 12:39:10,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 311 states have (on average 1.5016077170418007) internal successors, (467), 311 states have internal predecessors, (467), 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) [2021-11-23 12:39:10,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 467 transitions. [2021-11-23 12:39:10,969 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 467 transitions. Word has length 24 [2021-11-23 12:39:10,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:39:10,970 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 467 transitions. [2021-11-23 12:39:10,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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) [2021-11-23 12:39:10,971 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 467 transitions. [2021-11-23 12:39:10,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-23 12:39:10,976 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:39:10,976 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:39:10,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4df04655-80f3-49f2-95cf-504291448e9a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 12:39:11,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4df04655-80f3-49f2-95cf-504291448e9a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:39:11,190 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:39:11,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:39:11,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1698457876, now seen corresponding path program 1 times [2021-11-23 12:39:11,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:39:11,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1227274753] [2021-11-23 12:39:11,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:39:11,194 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:39:11,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4df04655-80f3-49f2-95cf-504291448e9a/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:39:11,210 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4df04655-80f3-49f2-95cf-504291448e9a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:39:11,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4df04655-80f3-49f2-95cf-504291448e9a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 12:39:11,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:39:11,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 12:39:11,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:39:11,883 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:39:11,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:39:12,196 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:39:12,196 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:39:12,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1227274753] [2021-11-23 12:39:12,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1227274753] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:39:12,197 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:39:12,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-23 12:39:12,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380950268] [2021-11-23 12:39:12,198 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:39:12,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:39:12,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:39:12,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:39:12,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:39:12,204 INFO L87 Difference]: Start difference. First operand 312 states and 467 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:14,240 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 12:39:14,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:39:14,431 INFO L93 Difference]: Finished difference Result 718 states and 1080 transitions. [2021-11-23 12:39:14,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:39:14,432 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-23 12:39:14,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:39:14,439 INFO L225 Difference]: With dead ends: 718 [2021-11-23 12:39:14,439 INFO L226 Difference]: Without dead ends: 513 [2021-11-23 12:39:14,441 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:39:14,443 INFO L933 BasicCegarLoop]: 296 mSDtfsCounter, 268 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:39:14,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 596 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 31 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2021-11-23 12:39:14,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2021-11-23 12:39:14,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 513. [2021-11-23 12:39:14,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 512 states have (on average 1.494140625) internal successors, (765), 512 states have internal predecessors, (765), 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) [2021-11-23 12:39:14,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 765 transitions. [2021-11-23 12:39:14,496 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 765 transitions. Word has length 60 [2021-11-23 12:39:14,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:39:14,497 INFO L470 AbstractCegarLoop]: Abstraction has 513 states and 765 transitions. [2021-11-23 12:39:14,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:14,498 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 765 transitions. [2021-11-23 12:39:14,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-23 12:39:14,507 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:39:14,507 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:39:14,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4df04655-80f3-49f2-95cf-504291448e9a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-23 12:39:14,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4df04655-80f3-49f2-95cf-504291448e9a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:39:14,724 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:39:14,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:39:14,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1093818034, now seen corresponding path program 1 times [2021-11-23 12:39:14,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:39:14,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1028959708] [2021-11-23 12:39:14,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:39:14,727 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:39:14,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4df04655-80f3-49f2-95cf-504291448e9a/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:39:14,731 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4df04655-80f3-49f2-95cf-504291448e9a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:39:14,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4df04655-80f3-49f2-95cf-504291448e9a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-23 12:39:15,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:39:15,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 12:39:15,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:39:34,527 WARN L227 SmtUtils]: Spent 18.89s on a formula simplification that was a NOOP. DAG size: 19 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-23 12:39:34,527 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 12:39:34,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 4938 treesize of output 4458 [2021-11-23 12:40:14,926 WARN L227 SmtUtils]: Spent 40.29s on a formula simplification that was a NOOP. DAG size: 23 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-23 12:40:14,927 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 12:40:14,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 4439 treesize of output 4067