/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/openssl/s3_clnt.blast.02.i.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-20 17:30:31,399 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 17:30:31,401 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 17:30:31,435 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-20 17:30:31,435 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-20 17:30:31,436 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-20 17:30:31,438 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-20 17:30:31,440 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-20 17:30:31,441 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-20 17:30:31,444 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-20 17:30:31,444 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-20 17:30:31,445 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-20 17:30:31,445 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-20 17:30:31,447 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-20 17:30:31,449 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-20 17:30:31,451 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-20 17:30:31,452 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-20 17:30:31,452 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-20 17:30:31,453 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-20 17:30:31,454 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-20 17:30:31,454 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-20 17:30:31,455 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-20 17:30:31,456 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-20 17:30:31,456 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-20 17:30:31,457 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-20 17:30:31,465 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-20 17:30:31,470 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-20 17:30:31,470 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-20 17:30:31,473 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-20 17:30:31,473 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-03-20 17:30:31,479 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 17:30:31,479 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 17:30:31,479 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 17:30:31,480 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-20 17:30:31,480 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 17:30:31,480 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-20 17:30:31,480 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 17:30:31,480 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 17:30:31,480 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 17:30:31,480 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 17:30:31,480 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-20 17:30:31,480 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 17:30:31,480 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 17:30:31,480 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 17:30:31,481 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 17:30:31,481 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 17:30:31,481 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-20 17:30:31,481 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 17:30:31,481 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 17:30:31,481 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 17:30:31,481 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-20 17:30:31,481 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-03-20 17:30:31,481 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-03-20 17:30:31,481 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-20 17:30:31,481 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-03-20 17:30:31,481 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 17:30:31,620 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 17:30:31,636 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 17:30:31,637 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 17:30:31,638 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 17:30:31,638 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 17:30:31,639 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/openssl/s3_clnt.blast.02.i.cil-2.c [2022-03-20 17:30:31,694 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df9f3b432/c7f7d7d0062547b2855a55a215b189a2/FLAG2b850cb35 [2022-03-20 17:30:32,081 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 17:30:32,082 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/openssl/s3_clnt.blast.02.i.cil-2.c [2022-03-20 17:30:32,092 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df9f3b432/c7f7d7d0062547b2855a55a215b189a2/FLAG2b850cb35 [2022-03-20 17:30:32,464 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df9f3b432/c7f7d7d0062547b2855a55a215b189a2 [2022-03-20 17:30:32,465 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 17:30:32,466 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-20 17:30:32,468 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 17:30:32,469 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 17:30:32,470 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 17:30:32,471 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 05:30:32" (1/1) ... [2022-03-20 17:30:32,471 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f4e37b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:30:32, skipping insertion in model container [2022-03-20 17:30:32,471 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 05:30:32" (1/1) ... [2022-03-20 17:30:32,475 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 17:30:32,510 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 17:30:32,767 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/openssl/s3_clnt.blast.02.i.cil-2.c[65398,65411] [2022-03-20 17:30:32,772 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 17:30:32,779 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 17:30:32,829 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/openssl/s3_clnt.blast.02.i.cil-2.c[65398,65411] [2022-03-20 17:30:32,831 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 17:30:32,845 INFO L208 MainTranslator]: Completed translation [2022-03-20 17:30:32,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:30:32 WrapperNode [2022-03-20 17:30:32,845 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 17:30:32,846 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 17:30:32,846 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 17:30:32,846 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 17:30:32,853 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:30:32" (1/1) ... [2022-03-20 17:30:32,853 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:30:32" (1/1) ... [2022-03-20 17:30:32,868 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:30:32" (1/1) ... [2022-03-20 17:30:32,868 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:30:32" (1/1) ... [2022-03-20 17:30:32,896 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:30:32" (1/1) ... [2022-03-20 17:30:32,917 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:30:32" (1/1) ... [2022-03-20 17:30:32,919 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:30:32" (1/1) ... [2022-03-20 17:30:32,923 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 17:30:32,924 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 17:30:32,924 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 17:30:32,924 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 17:30:32,931 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:30:32" (1/1) ... [2022-03-20 17:30:32,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 17:30:32,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:30:32,951 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-20 17:30:32,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-20 17:30:32,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 17:30:32,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 17:30:32,986 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 17:30:32,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_get_client_method [2022-03-20 17:30:32,986 INFO L138 BoogieDeclarations]: Found implementation of procedure SSLv3_client_method [2022-03-20 17:30:32,986 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 17:30:32,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_connect [2022-03-20 17:30:32,987 INFO L138 BoogieDeclarations]: Found implementation of procedure sslv3_base_method [2022-03-20 17:30:32,987 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-03-20 17:30:32,987 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-03-20 17:30:32,987 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-20 17:30:32,988 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 17:30:32,988 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 17:30:32,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 17:30:32,988 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-03-20 17:30:32,988 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-03-20 17:30:32,988 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-20 17:30:32,988 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-03-20 17:30:32,988 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2022-03-20 17:30:32,988 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2022-03-20 17:30:32,989 INFO L130 BoogieDeclarations]: Found specification of procedure SSLv3_client_method [2022-03-20 17:30:32,989 INFO L130 BoogieDeclarations]: Found specification of procedure sslv3_base_method [2022-03-20 17:30:32,989 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_connect [2022-03-20 17:30:32,989 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_get_client_method [2022-03-20 17:30:32,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-03-20 17:30:32,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-03-20 17:30:32,989 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 17:30:32,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-03-20 17:30:32,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 17:30:32,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-03-20 17:30:32,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 17:30:32,989 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2022-03-20 17:30:32,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-03-20 17:30:32,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 17:30:32,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 17:30:32,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 17:30:32,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-03-20 17:30:32,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-03-20 17:30:32,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-03-20 17:30:32,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-03-20 17:30:32,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 17:30:33,105 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 17:30:33,106 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 17:30:34,055 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:30:34,368 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2022-03-20 17:30:34,368 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2022-03-20 17:30:34,376 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 17:30:34,396 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 17:30:34,396 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-20 17:30:34,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 05:30:34 BoogieIcfgContainer [2022-03-20 17:30:34,398 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 17:30:34,399 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 17:30:34,399 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 17:30:34,401 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 17:30:34,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 05:30:32" (1/3) ... [2022-03-20 17:30:34,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fb141ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 05:30:34, skipping insertion in model container [2022-03-20 17:30:34,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:30:32" (2/3) ... [2022-03-20 17:30:34,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fb141ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 05:30:34, skipping insertion in model container [2022-03-20 17:30:34,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 05:30:34" (3/3) ... [2022-03-20 17:30:34,403 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt.blast.02.i.cil-2.c [2022-03-20 17:30:34,406 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-20 17:30:34,406 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 17:30:34,449 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 17:30:34,453 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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 [2022-03-20 17:30:34,453 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 17:30:34,497 INFO L276 IsEmpty]: Start isEmpty. Operand has 138 states, 130 states have (on average 1.6923076923076923) internal successors, (220), 131 states have internal predecessors, (220), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-20 17:30:34,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-03-20 17:30:34,505 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:30:34,505 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:30:34,505 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:30:34,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:30:34,509 INFO L85 PathProgramCache]: Analyzing trace with hash -22644822, now seen corresponding path program 1 times [2022-03-20 17:30:34,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:30:34,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2017301051] [2022-03-20 17:30:34,521 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:30:34,521 INFO L85 PathProgramCache]: Analyzing trace with hash -22644822, now seen corresponding path program 2 times [2022-03-20 17:30:34,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:30:34,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372996737] [2022-03-20 17:30:34,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:30:34,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:30:34,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:35,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:30:35,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:35,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:30:35,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:30:35,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372996737] [2022-03-20 17:30:35,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372996737] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:30:35,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:30:35,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:30:35,023 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:30:35,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2017301051] [2022-03-20 17:30:35,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2017301051] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:30:35,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:30:35,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:30:35,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626863107] [2022-03-20 17:30:35,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:30:35,028 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 17:30:35,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:30:35,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 17:30:35,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-20 17:30:35,056 INFO L87 Difference]: Start difference. First operand has 138 states, 130 states have (on average 1.6923076923076923) internal successors, (220), 131 states have internal predecessors, (220), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:30:37,092 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 [] [2022-03-20 17:30:37,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:30:37,504 INFO L93 Difference]: Finished difference Result 267 states and 442 transitions. [2022-03-20 17:30:37,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 17:30:37,516 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2022-03-20 17:30:37,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:30:37,522 INFO L225 Difference]: With dead ends: 267 [2022-03-20 17:30:37,522 INFO L226 Difference]: Without dead ends: 122 [2022-03-20 17:30:37,526 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-20 17:30:37,528 INFO L913 BasicCegarLoop]: 213 mSDtfsCounter, 7 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-20 17:30:37,529 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 555 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 320 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-03-20 17:30:37,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-03-20 17:30:37,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 121. [2022-03-20 17:30:37,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 116 states have (on average 1.5) internal successors, (174), 116 states have internal predecessors, (174), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:30:37,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 178 transitions. [2022-03-20 17:30:37,566 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 178 transitions. Word has length 30 [2022-03-20 17:30:37,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:30:37,567 INFO L478 AbstractCegarLoop]: Abstraction has 121 states and 178 transitions. [2022-03-20 17:30:37,567 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:30:37,567 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 178 transitions. [2022-03-20 17:30:37,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-03-20 17:30:37,570 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:30:37,570 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:30:37,570 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-20 17:30:37,571 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:30:37,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:30:37,571 INFO L85 PathProgramCache]: Analyzing trace with hash 868047042, now seen corresponding path program 1 times [2022-03-20 17:30:37,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:30:37,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [173365676] [2022-03-20 17:30:37,574 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:30:37,574 INFO L85 PathProgramCache]: Analyzing trace with hash 868047042, now seen corresponding path program 2 times [2022-03-20 17:30:37,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:30:37,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713415662] [2022-03-20 17:30:37,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:30:37,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:30:37,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:37,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:30:37,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:37,788 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-20 17:30:37,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:30:37,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713415662] [2022-03-20 17:30:37,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713415662] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:30:37,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:30:37,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 17:30:37,792 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:30:37,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [173365676] [2022-03-20 17:30:37,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [173365676] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:30:37,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:30:37,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 17:30:37,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736045593] [2022-03-20 17:30:37,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:30:37,793 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 17:30:37,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:30:37,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 17:30:37,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 17:30:37,794 INFO L87 Difference]: Start difference. First operand 121 states and 178 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:30:39,812 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 [] [2022-03-20 17:30:40,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:30:40,062 INFO L93 Difference]: Finished difference Result 326 states and 488 transitions. [2022-03-20 17:30:40,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 17:30:40,062 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2022-03-20 17:30:40,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:30:40,064 INFO L225 Difference]: With dead ends: 326 [2022-03-20 17:30:40,064 INFO L226 Difference]: Without dead ends: 221 [2022-03-20 17:30:40,064 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 17:30:40,065 INFO L913 BasicCegarLoop]: 167 mSDtfsCounter, 123 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-03-20 17:30:40,065 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 320 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 189 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-03-20 17:30:40,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-03-20 17:30:40,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2022-03-20 17:30:40,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 216 states have (on average 1.4861111111111112) internal successors, (321), 216 states have internal predecessors, (321), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:30:40,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 325 transitions. [2022-03-20 17:30:40,078 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 325 transitions. Word has length 44 [2022-03-20 17:30:40,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:30:40,078 INFO L478 AbstractCegarLoop]: Abstraction has 221 states and 325 transitions. [2022-03-20 17:30:40,078 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:30:40,078 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 325 transitions. [2022-03-20 17:30:40,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-03-20 17:30:40,080 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:30:40,080 INFO L499 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, 1, 1, 1, 1, 1, 1] [2022-03-20 17:30:40,080 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-20 17:30:40,080 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:30:40,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:30:40,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1147706284, now seen corresponding path program 1 times [2022-03-20 17:30:40,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:30:40,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [892774692] [2022-03-20 17:30:40,081 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:30:40,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1147706284, now seen corresponding path program 2 times [2022-03-20 17:30:40,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:30:40,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989088929] [2022-03-20 17:30:40,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:30:40,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:30:40,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:40,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:30:40,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:40,263 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-20 17:30:40,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:30:40,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989088929] [2022-03-20 17:30:40,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989088929] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:30:40,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:30:40,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:30:40,264 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:30:40,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [892774692] [2022-03-20 17:30:40,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [892774692] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:30:40,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:30:40,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:30:40,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075217760] [2022-03-20 17:30:40,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:30:40,266 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 17:30:40,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:30:40,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 17:30:40,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-20 17:30:40,267 INFO L87 Difference]: Start difference. First operand 221 states and 325 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:30:42,277 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:30:42,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:30:42,683 INFO L93 Difference]: Finished difference Result 362 states and 538 transitions. [2022-03-20 17:30:42,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 17:30:42,683 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2022-03-20 17:30:42,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:30:42,685 INFO L225 Difference]: With dead ends: 362 [2022-03-20 17:30:42,685 INFO L226 Difference]: Without dead ends: 257 [2022-03-20 17:30:42,685 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-20 17:30:42,686 INFO L913 BasicCegarLoop]: 198 mSDtfsCounter, 33 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-20 17:30:42,686 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 484 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 359 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-03-20 17:30:42,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2022-03-20 17:30:42,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 239. [2022-03-20 17:30:42,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 234 states have (on average 1.5) internal successors, (351), 234 states have internal predecessors, (351), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:30:42,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 355 transitions. [2022-03-20 17:30:42,697 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 355 transitions. Word has length 59 [2022-03-20 17:30:42,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:30:42,697 INFO L478 AbstractCegarLoop]: Abstraction has 239 states and 355 transitions. [2022-03-20 17:30:42,697 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:30:42,698 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 355 transitions. [2022-03-20 17:30:42,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-03-20 17:30:42,700 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:30:42,701 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:30:42,701 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-20 17:30:42,701 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:30:42,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:30:42,701 INFO L85 PathProgramCache]: Analyzing trace with hash -861449916, now seen corresponding path program 3 times [2022-03-20 17:30:42,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:30:42,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2042636894] [2022-03-20 17:30:51,322 WARN L232 SmtUtils]: Spent 7.77s on a formula simplification that was a NOOP. DAG size: 228 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-20 17:30:58,999 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:30:59,002 INFO L85 PathProgramCache]: Analyzing trace with hash -861449916, now seen corresponding path program 4 times [2022-03-20 17:30:59,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:30:59,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668834937] [2022-03-20 17:30:59,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:30:59,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:30:59,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:59,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:30:59,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:59,188 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-20 17:30:59,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:30:59,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668834937] [2022-03-20 17:30:59,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668834937] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:30:59,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:30:59,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:30:59,189 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:30:59,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2042636894] [2022-03-20 17:30:59,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2042636894] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:30:59,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:30:59,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:30:59,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482255393] [2022-03-20 17:30:59,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:30:59,190 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 17:30:59,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:30:59,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 17:30:59,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-20 17:30:59,190 INFO L87 Difference]: Start difference. First operand 239 states and 355 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:31:01,211 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 [] [2022-03-20 17:31:01,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:31:01,583 INFO L93 Difference]: Finished difference Result 642 states and 963 transitions. [2022-03-20 17:31:01,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 17:31:01,583 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 73 [2022-03-20 17:31:01,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:31:01,585 INFO L225 Difference]: With dead ends: 642 [2022-03-20 17:31:01,585 INFO L226 Difference]: Without dead ends: 419 [2022-03-20 17:31:01,586 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-20 17:31:01,586 INFO L913 BasicCegarLoop]: 104 mSDtfsCounter, 112 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 43 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-20 17:31:01,587 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 296 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 379 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-03-20 17:31:01,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2022-03-20 17:31:01,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 261. [2022-03-20 17:31:01,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 256 states have (on average 1.4921875) internal successors, (382), 256 states have internal predecessors, (382), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:31:01,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 386 transitions. [2022-03-20 17:31:01,601 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 386 transitions. Word has length 73 [2022-03-20 17:31:01,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:31:01,601 INFO L478 AbstractCegarLoop]: Abstraction has 261 states and 386 transitions. [2022-03-20 17:31:01,601 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:31:01,601 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 386 transitions. [2022-03-20 17:31:01,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-03-20 17:31:01,603 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:31:01,603 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1] [2022-03-20 17:31:01,603 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-20 17:31:01,603 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:31:01,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:31:01,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1970430362, now seen corresponding path program 1 times [2022-03-20 17:31:01,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:31:01,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1291133806] [2022-03-20 17:31:14,361 WARN L232 SmtUtils]: Spent 7.90s on a formula simplification that was a NOOP. DAG size: 228 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-20 17:31:19,479 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:31:19,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1970430362, now seen corresponding path program 2 times [2022-03-20 17:31:19,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:31:19,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135042924] [2022-03-20 17:31:19,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:31:19,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:31:19,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:31:19,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:31:19,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:31:19,643 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-20 17:31:19,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:31:19,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135042924] [2022-03-20 17:31:19,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135042924] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:31:19,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:31:19,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:31:19,644 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:31:19,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1291133806] [2022-03-20 17:31:19,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1291133806] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:31:19,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:31:19,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:31:19,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867478151] [2022-03-20 17:31:19,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:31:19,645 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 17:31:19,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:31:19,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 17:31:19,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-20 17:31:19,646 INFO L87 Difference]: Start difference. First operand 261 states and 386 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:31:21,667 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 [] [2022-03-20 17:31:22,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:31:22,082 INFO L93 Difference]: Finished difference Result 665 states and 992 transitions. [2022-03-20 17:31:22,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 17:31:22,083 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 73 [2022-03-20 17:31:22,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:31:22,084 INFO L225 Difference]: With dead ends: 665 [2022-03-20 17:31:22,084 INFO L226 Difference]: Without dead ends: 420 [2022-03-20 17:31:22,085 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-20 17:31:22,085 INFO L913 BasicCegarLoop]: 97 mSDtfsCounter, 119 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 46 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-20 17:31:22,086 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 278 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 382 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-03-20 17:31:22,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2022-03-20 17:31:22,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 263. [2022-03-20 17:31:22,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 258 states have (on average 1.4844961240310077) internal successors, (383), 258 states have internal predecessors, (383), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:31:22,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 387 transitions. [2022-03-20 17:31:22,113 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 387 transitions. Word has length 73 [2022-03-20 17:31:22,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:31:22,113 INFO L478 AbstractCegarLoop]: Abstraction has 263 states and 387 transitions. [2022-03-20 17:31:22,113 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:31:22,114 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 387 transitions. [2022-03-20 17:31:22,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-20 17:31:22,115 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:31:22,115 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:31:22,115 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-20 17:31:22,115 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:31:22,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:31:22,115 INFO L85 PathProgramCache]: Analyzing trace with hash -899406007, now seen corresponding path program 1 times [2022-03-20 17:31:22,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:31:22,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2022005785] [2022-03-20 17:31:33,947 WARN L232 SmtUtils]: Spent 11.08s on a formula simplification that was a NOOP. DAG size: 228 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-20 17:31:44,597 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:31:44,597 INFO L85 PathProgramCache]: Analyzing trace with hash -899406007, now seen corresponding path program 2 times [2022-03-20 17:31:44,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:31:44,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318762317] [2022-03-20 17:31:44,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:31:44,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:31:44,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:31:44,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:31:44,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:31:44,735 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-20 17:31:44,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:31:44,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318762317] [2022-03-20 17:31:44,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318762317] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:31:44,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:31:44,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:31:44,735 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:31:44,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2022005785] [2022-03-20 17:31:44,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2022005785] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:31:44,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:31:44,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:31:44,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949450818] [2022-03-20 17:31:44,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:31:44,736 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 17:31:44,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:31:44,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 17:31:44,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-20 17:31:44,737 INFO L87 Difference]: Start difference. First operand 263 states and 387 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:31:46,745 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:31:47,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:31:47,080 INFO L93 Difference]: Finished difference Result 415 states and 613 transitions. [2022-03-20 17:31:47,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 17:31:47,081 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 74 [2022-03-20 17:31:47,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:31:47,082 INFO L225 Difference]: With dead ends: 415 [2022-03-20 17:31:47,082 INFO L226 Difference]: Without dead ends: 280 [2022-03-20 17:31:47,082 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-20 17:31:47,085 INFO L913 BasicCegarLoop]: 196 mSDtfsCounter, 35 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-03-20 17:31:47,085 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 480 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 350 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-03-20 17:31:47,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2022-03-20 17:31:47,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 263. [2022-03-20 17:31:47,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 258 states have (on average 1.4806201550387597) internal successors, (382), 258 states have internal predecessors, (382), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:31:47,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 386 transitions. [2022-03-20 17:31:47,095 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 386 transitions. Word has length 74 [2022-03-20 17:31:47,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:31:47,095 INFO L478 AbstractCegarLoop]: Abstraction has 263 states and 386 transitions. [2022-03-20 17:31:47,095 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:31:47,095 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 386 transitions. [2022-03-20 17:31:47,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-20 17:31:47,096 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:31:47,096 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:31:47,096 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-20 17:31:47,096 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:31:47,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:31:47,096 INFO L85 PathProgramCache]: Analyzing trace with hash -2000808735, now seen corresponding path program 1 times [2022-03-20 17:31:47,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:31:47,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1699516767] [2022-03-20 17:32:00,125 WARN L232 SmtUtils]: Spent 7.97s on a formula simplification that was a NOOP. DAG size: 228 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-20 17:32:04,956 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:32:04,957 INFO L85 PathProgramCache]: Analyzing trace with hash -2000808735, now seen corresponding path program 2 times [2022-03-20 17:32:04,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:32:04,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612561909] [2022-03-20 17:32:04,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:32:04,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:32:05,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:05,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:32:05,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:05,098 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-20 17:32:05,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:32:05,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612561909] [2022-03-20 17:32:05,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612561909] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:32:05,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:32:05,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:32:05,099 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:32:05,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1699516767] [2022-03-20 17:32:05,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1699516767] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:32:05,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:32:05,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:32:05,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443297964] [2022-03-20 17:32:05,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:32:05,100 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 17:32:05,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:32:05,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 17:32:05,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-20 17:32:05,100 INFO L87 Difference]: Start difference. First operand 263 states and 386 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:32:07,109 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:32:07,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:32:07,443 INFO L93 Difference]: Finished difference Result 415 states and 611 transitions. [2022-03-20 17:32:07,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 17:32:07,443 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 75 [2022-03-20 17:32:07,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:32:07,444 INFO L225 Difference]: With dead ends: 415 [2022-03-20 17:32:07,445 INFO L226 Difference]: Without dead ends: 280 [2022-03-20 17:32:07,445 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-20 17:32:07,445 INFO L913 BasicCegarLoop]: 195 mSDtfsCounter, 33 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-03-20 17:32:07,446 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 478 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 349 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-03-20 17:32:07,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2022-03-20 17:32:07,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 263. [2022-03-20 17:32:07,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 258 states have (on average 1.4767441860465116) internal successors, (381), 258 states have internal predecessors, (381), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:32:07,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 385 transitions. [2022-03-20 17:32:07,454 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 385 transitions. Word has length 75 [2022-03-20 17:32:07,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:32:07,454 INFO L478 AbstractCegarLoop]: Abstraction has 263 states and 385 transitions. [2022-03-20 17:32:07,454 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:32:07,455 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 385 transitions. [2022-03-20 17:32:07,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-03-20 17:32:07,455 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:32:07,455 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:32:07,455 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-20 17:32:07,455 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:32:07,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:32:07,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1727974300, now seen corresponding path program 1 times [2022-03-20 17:32:07,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:32:07,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1418250142] [2022-03-20 17:32:26,793 WARN L232 SmtUtils]: Spent 14.18s on a formula simplification that was a NOOP. DAG size: 228 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-20 17:32:31,058 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:32:31,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1727974300, now seen corresponding path program 2 times [2022-03-20 17:32:31,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:32:31,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434431111] [2022-03-20 17:32:31,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:32:31,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:32:31,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:31,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:32:31,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:31,200 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-20 17:32:31,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:32:31,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434431111] [2022-03-20 17:32:31,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434431111] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:32:31,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:32:31,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:32:31,201 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:32:31,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1418250142] [2022-03-20 17:32:31,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1418250142] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:32:31,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:32:31,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:32:31,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104421208] [2022-03-20 17:32:31,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:32:31,201 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 17:32:31,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:32:31,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 17:32:31,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-20 17:32:31,202 INFO L87 Difference]: Start difference. First operand 263 states and 385 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:32:33,212 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 [] [2022-03-20 17:32:33,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:32:33,490 INFO L93 Difference]: Finished difference Result 406 states and 598 transitions. [2022-03-20 17:32:33,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 17:32:33,490 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 76 [2022-03-20 17:32:33,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:32:33,491 INFO L225 Difference]: With dead ends: 406 [2022-03-20 17:32:33,491 INFO L226 Difference]: Without dead ends: 271 [2022-03-20 17:32:33,492 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-20 17:32:33,492 INFO L913 BasicCegarLoop]: 188 mSDtfsCounter, 24 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-03-20 17:32:33,492 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 464 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 326 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-03-20 17:32:33,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2022-03-20 17:32:33,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 263. [2022-03-20 17:32:33,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 258 states have (on average 1.4728682170542635) internal successors, (380), 258 states have internal predecessors, (380), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:32:33,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 384 transitions. [2022-03-20 17:32:33,500 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 384 transitions. Word has length 76 [2022-03-20 17:32:33,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:32:33,500 INFO L478 AbstractCegarLoop]: Abstraction has 263 states and 384 transitions. [2022-03-20 17:32:33,501 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:32:33,501 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 384 transitions. [2022-03-20 17:32:33,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-20 17:32:33,501 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:32:33,501 INFO L499 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, 1, 1, 1, 1, 1] [2022-03-20 17:32:33,501 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-20 17:32:33,501 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:32:33,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:32:33,502 INFO L85 PathProgramCache]: Analyzing trace with hash -988156823, now seen corresponding path program 1 times [2022-03-20 17:32:33,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:32:33,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1160806617] [2022-03-20 17:32:33,502 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:32:33,502 INFO L85 PathProgramCache]: Analyzing trace with hash -988156823, now seen corresponding path program 2 times [2022-03-20 17:32:33,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:32:33,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663435174] [2022-03-20 17:32:33,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:32:33,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:32:33,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:33,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:32:33,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:33,666 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-03-20 17:32:33,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:32:33,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663435174] [2022-03-20 17:32:33,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663435174] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:32:33,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:32:33,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 17:32:33,666 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:32:33,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1160806617] [2022-03-20 17:32:33,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1160806617] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:32:33,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:32:33,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 17:32:33,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110526320] [2022-03-20 17:32:33,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:32:33,667 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 17:32:33,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:32:33,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 17:32:33,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 17:32:33,668 INFO L87 Difference]: Start difference. First operand 263 states and 384 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:32:35,676 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:32:36,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:32:36,090 INFO L93 Difference]: Finished difference Result 530 states and 782 transitions. [2022-03-20 17:32:36,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 17:32:36,090 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 77 [2022-03-20 17:32:36,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:32:36,092 INFO L225 Difference]: With dead ends: 530 [2022-03-20 17:32:36,092 INFO L226 Difference]: Without dead ends: 395 [2022-03-20 17:32:36,092 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 17:32:36,093 INFO L913 BasicCegarLoop]: 315 mSDtfsCounter, 126 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-20 17:32:36,093 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 477 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 339 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-03-20 17:32:36,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2022-03-20 17:32:36,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 395. [2022-03-20 17:32:36,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 390 states have (on average 1.4666666666666666) internal successors, (572), 390 states have internal predecessors, (572), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:32:36,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 576 transitions. [2022-03-20 17:32:36,104 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 576 transitions. Word has length 77 [2022-03-20 17:32:36,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:32:36,105 INFO L478 AbstractCegarLoop]: Abstraction has 395 states and 576 transitions. [2022-03-20 17:32:36,105 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:32:36,105 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 576 transitions. [2022-03-20 17:32:36,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-20 17:32:36,106 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:32:36,106 INFO L499 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, 1, 1, 1, 1, 1] [2022-03-20 17:32:36,106 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-20 17:32:36,106 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:32:36,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:32:36,107 INFO L85 PathProgramCache]: Analyzing trace with hash -926117209, now seen corresponding path program 1 times [2022-03-20 17:32:36,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:32:36,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1735925704] [2022-03-20 17:32:36,107 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:32:36,107 INFO L85 PathProgramCache]: Analyzing trace with hash -926117209, now seen corresponding path program 2 times [2022-03-20 17:32:36,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:32:36,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212183797] [2022-03-20 17:32:36,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:32:36,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:32:36,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:36,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:32:36,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:36,216 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-20 17:32:36,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:32:36,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212183797] [2022-03-20 17:32:36,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212183797] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:32:36,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:32:36,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 17:32:36,217 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:32:36,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1735925704] [2022-03-20 17:32:36,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1735925704] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:32:36,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:32:36,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 17:32:36,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139596297] [2022-03-20 17:32:36,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:32:36,217 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 17:32:36,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:32:36,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 17:32:36,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 17:32:36,218 INFO L87 Difference]: Start difference. First operand 395 states and 576 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:32:38,227 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 [] [2022-03-20 17:32:38,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:32:38,470 INFO L93 Difference]: Finished difference Result 687 states and 1004 transitions. [2022-03-20 17:32:38,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 17:32:38,470 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 77 [2022-03-20 17:32:38,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:32:38,471 INFO L225 Difference]: With dead ends: 687 [2022-03-20 17:32:38,471 INFO L226 Difference]: Without dead ends: 420 [2022-03-20 17:32:38,472 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 17:32:38,472 INFO L913 BasicCegarLoop]: 196 mSDtfsCounter, 16 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-03-20 17:32:38,473 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 358 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 214 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-03-20 17:32:38,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2022-03-20 17:32:38,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 420. [2022-03-20 17:32:38,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 415 states have (on average 1.4578313253012047) internal successors, (605), 415 states have internal predecessors, (605), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:32:38,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 609 transitions. [2022-03-20 17:32:38,485 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 609 transitions. Word has length 77 [2022-03-20 17:32:38,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:32:38,485 INFO L478 AbstractCegarLoop]: Abstraction has 420 states and 609 transitions. [2022-03-20 17:32:38,485 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:32:38,485 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 609 transitions. [2022-03-20 17:32:38,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-03-20 17:32:38,486 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:32:38,486 INFO L499 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, 1, 1, 1, 1, 1, 1] [2022-03-20 17:32:38,486 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-20 17:32:38,486 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:32:38,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:32:38,487 INFO L85 PathProgramCache]: Analyzing trace with hash 140608816, now seen corresponding path program 1 times [2022-03-20 17:32:38,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:32:38,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [742625250] [2022-03-20 17:32:38,503 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:32:38,503 INFO L85 PathProgramCache]: Analyzing trace with hash 140608816, now seen corresponding path program 2 times [2022-03-20 17:32:38,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:32:38,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480978270] [2022-03-20 17:32:38,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:32:38,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:32:38,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:38,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:32:38,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:38,617 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-03-20 17:32:38,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:32:38,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480978270] [2022-03-20 17:32:38,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480978270] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:32:38,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:32:38,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 17:32:38,618 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:32:38,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [742625250] [2022-03-20 17:32:38,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [742625250] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:32:38,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:32:38,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 17:32:38,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683404169] [2022-03-20 17:32:38,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:32:38,618 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 17:32:38,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:32:38,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 17:32:38,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 17:32:38,619 INFO L87 Difference]: Start difference. First operand 420 states and 609 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:32:40,627 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:32:40,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:32:40,996 INFO L93 Difference]: Finished difference Result 843 states and 1231 transitions. [2022-03-20 17:32:40,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 17:32:40,996 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 97 [2022-03-20 17:32:40,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:32:40,998 INFO L225 Difference]: With dead ends: 843 [2022-03-20 17:32:40,998 INFO L226 Difference]: Without dead ends: 551 [2022-03-20 17:32:40,998 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 17:32:40,999 INFO L913 BasicCegarLoop]: 314 mSDtfsCounter, 126 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-20 17:32:40,999 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 476 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 338 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-03-20 17:32:41,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2022-03-20 17:32:41,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 551. [2022-03-20 17:32:41,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 546 states have (on average 1.4578754578754578) internal successors, (796), 546 states have internal predecessors, (796), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:32:41,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 800 transitions. [2022-03-20 17:32:41,014 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 800 transitions. Word has length 97 [2022-03-20 17:32:41,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:32:41,014 INFO L478 AbstractCegarLoop]: Abstraction has 551 states and 800 transitions. [2022-03-20 17:32:41,014 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:32:41,015 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 800 transitions. [2022-03-20 17:32:41,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-03-20 17:32:41,015 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:32:41,016 INFO L499 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, 1, 1, 1, 1, 1, 1] [2022-03-20 17:32:41,016 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-20 17:32:41,016 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:32:41,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:32:41,016 INFO L85 PathProgramCache]: Analyzing trace with hash -2136926065, now seen corresponding path program 1 times [2022-03-20 17:32:41,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:32:41,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [213004948] [2022-03-20 17:32:41,017 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:32:41,017 INFO L85 PathProgramCache]: Analyzing trace with hash -2136926065, now seen corresponding path program 2 times [2022-03-20 17:32:41,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:32:41,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197781963] [2022-03-20 17:32:41,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:32:41,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:32:41,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:41,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:32:41,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:41,177 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-03-20 17:32:41,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:32:41,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197781963] [2022-03-20 17:32:41,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197781963] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:32:41,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:32:41,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 17:32:41,177 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:32:41,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [213004948] [2022-03-20 17:32:41,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [213004948] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:32:41,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:32:41,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 17:32:41,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730556946] [2022-03-20 17:32:41,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:32:41,178 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 17:32:41,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:32:41,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 17:32:41,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 17:32:41,178 INFO L87 Difference]: Start difference. First operand 551 states and 800 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:32:43,193 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 [] [2022-03-20 17:32:43,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:32:43,586 INFO L93 Difference]: Finished difference Result 1087 states and 1587 transitions. [2022-03-20 17:32:43,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 17:32:43,586 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 118 [2022-03-20 17:32:43,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:32:43,588 INFO L225 Difference]: With dead ends: 1087 [2022-03-20 17:32:43,588 INFO L226 Difference]: Without dead ends: 664 [2022-03-20 17:32:43,589 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 17:32:43,589 INFO L913 BasicCegarLoop]: 313 mSDtfsCounter, 125 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-20 17:32:43,590 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 475 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 337 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-03-20 17:32:43,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2022-03-20 17:32:43,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 664. [2022-03-20 17:32:43,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 659 states have (on average 1.4582701062215477) internal successors, (961), 659 states have internal predecessors, (961), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:32:43,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 965 transitions. [2022-03-20 17:32:43,610 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 965 transitions. Word has length 118 [2022-03-20 17:32:43,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:32:43,610 INFO L478 AbstractCegarLoop]: Abstraction has 664 states and 965 transitions. [2022-03-20 17:32:43,610 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:32:43,610 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 965 transitions. [2022-03-20 17:32:43,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-03-20 17:32:43,611 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:32:43,611 INFO L499 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:32:43,611 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-03-20 17:32:43,611 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:32:43,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:32:43,613 INFO L85 PathProgramCache]: Analyzing trace with hash -383649488, now seen corresponding path program 1 times [2022-03-20 17:32:43,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:32:43,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [804417805] [2022-03-20 17:32:54,375 WARN L232 SmtUtils]: Spent 5.68s on a formula simplification that was a NOOP. DAG size: 228 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-20 17:32:59,901 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:32:59,901 INFO L85 PathProgramCache]: Analyzing trace with hash -383649488, now seen corresponding path program 2 times [2022-03-20 17:32:59,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:32:59,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443390478] [2022-03-20 17:32:59,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:32:59,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:32:59,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:00,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:33:00,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:00,046 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 190 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-03-20 17:33:00,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:33:00,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443390478] [2022-03-20 17:33:00,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443390478] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:33:00,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:33:00,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:33:00,046 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:33:00,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [804417805] [2022-03-20 17:33:00,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [804417805] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:33:00,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:33:00,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:33:00,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577967892] [2022-03-20 17:33:00,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:33:00,047 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 17:33:00,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:33:00,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 17:33:00,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-20 17:33:00,048 INFO L87 Difference]: Start difference. First operand 664 states and 965 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:33:02,058 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 [] [2022-03-20 17:33:02,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:33:02,519 INFO L93 Difference]: Finished difference Result 1651 states and 2412 transitions. [2022-03-20 17:33:02,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 17:33:02,520 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 152 [2022-03-20 17:33:02,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:33:02,523 INFO L225 Difference]: With dead ends: 1651 [2022-03-20 17:33:02,523 INFO L226 Difference]: Without dead ends: 1113 [2022-03-20 17:33:02,524 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-20 17:33:02,525 INFO L913 BasicCegarLoop]: 214 mSDtfsCounter, 114 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 31 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-20 17:33:02,526 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 510 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 504 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-03-20 17:33:02,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2022-03-20 17:33:02,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 744. [2022-03-20 17:33:02,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 744 states, 739 states have (on average 1.4573748308525034) internal successors, (1077), 739 states have internal predecessors, (1077), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:33:02,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1081 transitions. [2022-03-20 17:33:02,566 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1081 transitions. Word has length 152 [2022-03-20 17:33:02,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:33:02,566 INFO L478 AbstractCegarLoop]: Abstraction has 744 states and 1081 transitions. [2022-03-20 17:33:02,566 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:33:02,566 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1081 transitions. [2022-03-20 17:33:02,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-03-20 17:33:02,567 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:33:02,567 INFO L499 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:33:02,568 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-03-20 17:33:02,568 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:33:02,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:33:02,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1211981165, now seen corresponding path program 1 times [2022-03-20 17:33:02,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:33:02,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [833449862] [2022-03-20 17:33:14,840 WARN L232 SmtUtils]: Spent 7.38s on a formula simplification that was a NOOP. DAG size: 228 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-20 17:33:23,314 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:33:23,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1211981165, now seen corresponding path program 2 times [2022-03-20 17:33:23,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:33:23,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095147554] [2022-03-20 17:33:23,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:33:23,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:33:23,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:23,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:33:23,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:23,466 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-03-20 17:33:23,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:33:23,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095147554] [2022-03-20 17:33:23,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095147554] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:33:23,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:33:23,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:33:23,466 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:33:23,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [833449862] [2022-03-20 17:33:23,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [833449862] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:33:23,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:33:23,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:33:23,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69500637] [2022-03-20 17:33:23,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:33:23,467 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 17:33:23,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:33:23,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 17:33:23,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-20 17:33:23,467 INFO L87 Difference]: Start difference. First operand 744 states and 1081 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:33:25,476 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:33:25,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:33:25,981 INFO L93 Difference]: Finished difference Result 1693 states and 2470 transitions. [2022-03-20 17:33:25,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 17:33:25,981 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 153 [2022-03-20 17:33:25,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:33:25,984 INFO L225 Difference]: With dead ends: 1693 [2022-03-20 17:33:25,984 INFO L226 Difference]: Without dead ends: 1091 [2022-03-20 17:33:25,986 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-20 17:33:25,986 INFO L913 BasicCegarLoop]: 239 mSDtfsCounter, 97 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-03-20 17:33:25,986 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 567 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 532 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-03-20 17:33:25,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1091 states. [2022-03-20 17:33:26,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1091 to 812. [2022-03-20 17:33:26,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 807 states have (on average 1.4584882280049567) internal successors, (1177), 807 states have internal predecessors, (1177), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:33:26,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1181 transitions. [2022-03-20 17:33:26,015 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1181 transitions. Word has length 153 [2022-03-20 17:33:26,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:33:26,015 INFO L478 AbstractCegarLoop]: Abstraction has 812 states and 1181 transitions. [2022-03-20 17:33:26,015 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:33:26,015 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1181 transitions. [2022-03-20 17:33:26,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-03-20 17:33:26,017 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:33:26,017 INFO L499 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:33:26,017 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-03-20 17:33:26,017 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:33:26,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:33:26,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1496700185, now seen corresponding path program 1 times [2022-03-20 17:33:26,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:33:26,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1231674831] [2022-03-20 17:33:39,861 WARN L232 SmtUtils]: Spent 12.33s on a formula simplification that was a NOOP. DAG size: 228 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-20 17:33:51,207 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:33:51,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1496700185, now seen corresponding path program 2 times [2022-03-20 17:33:51,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:33:51,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124169968] [2022-03-20 17:33:51,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:33:51,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:33:51,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:51,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:33:51,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:51,348 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 234 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-03-20 17:33:51,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:33:51,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124169968] [2022-03-20 17:33:51,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124169968] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:33:51,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:33:51,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:33:51,348 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:33:51,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1231674831] [2022-03-20 17:33:51,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1231674831] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:33:51,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:33:51,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:33:51,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709650361] [2022-03-20 17:33:51,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:33:51,349 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 17:33:51,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:33:51,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 17:33:51,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-20 17:33:51,349 INFO L87 Difference]: Start difference. First operand 812 states and 1181 transitions. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:33:53,357 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:33:53,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:33:53,729 INFO L93 Difference]: Finished difference Result 1997 states and 2921 transitions. [2022-03-20 17:33:53,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 17:33:53,739 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 167 [2022-03-20 17:33:53,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:33:53,743 INFO L225 Difference]: With dead ends: 1997 [2022-03-20 17:33:53,743 INFO L226 Difference]: Without dead ends: 1201 [2022-03-20 17:33:53,744 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-20 17:33:53,744 INFO L913 BasicCegarLoop]: 108 mSDtfsCounter, 117 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 43 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-03-20 17:33:53,745 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 300 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 394 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-03-20 17:33:53,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1201 states. [2022-03-20 17:33:53,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1201 to 817. [2022-03-20 17:33:53,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 812 states have (on average 1.4445812807881773) internal successors, (1173), 812 states have internal predecessors, (1173), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:33:53,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1177 transitions. [2022-03-20 17:33:53,774 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1177 transitions. Word has length 167 [2022-03-20 17:33:53,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:33:53,775 INFO L478 AbstractCegarLoop]: Abstraction has 817 states and 1177 transitions. [2022-03-20 17:33:53,775 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:33:53,775 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1177 transitions. [2022-03-20 17:33:53,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-03-20 17:33:53,776 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:33:53,776 INFO L499 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:33:53,776 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-03-20 17:33:53,777 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:33:53,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:33:53,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1030373157, now seen corresponding path program 1 times [2022-03-20 17:33:53,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:33:53,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1643937519] [2022-03-20 17:34:09,154 WARN L232 SmtUtils]: Spent 9.07s on a formula simplification that was a NOOP. DAG size: 228 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-20 17:34:14,694 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:34:14,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1030373157, now seen corresponding path program 2 times [2022-03-20 17:34:14,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:34:14,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529363091] [2022-03-20 17:34:14,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:34:14,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:34:14,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:14,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:34:14,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:14,838 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 241 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-03-20 17:34:14,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:34:14,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529363091] [2022-03-20 17:34:14,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529363091] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:34:14,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:34:14,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:34:14,840 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:34:14,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1643937519] [2022-03-20 17:34:14,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1643937519] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:34:14,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:34:14,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:34:14,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526670891] [2022-03-20 17:34:14,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:34:14,840 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 17:34:14,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:34:14,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 17:34:14,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-20 17:34:14,841 INFO L87 Difference]: Start difference. First operand 817 states and 1177 transitions. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 4 states have internal predecessors, (104), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:34:16,849 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:34:17,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:34:17,319 INFO L93 Difference]: Finished difference Result 1897 states and 2744 transitions. [2022-03-20 17:34:17,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 17:34:17,320 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 4 states have internal predecessors, (104), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 168 [2022-03-20 17:34:17,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:34:17,323 INFO L225 Difference]: With dead ends: 1897 [2022-03-20 17:34:17,323 INFO L226 Difference]: Without dead ends: 1096 [2022-03-20 17:34:17,324 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-20 17:34:17,324 INFO L913 BasicCegarLoop]: 237 mSDtfsCounter, 98 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-20 17:34:17,325 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 563 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 530 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-03-20 17:34:17,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1096 states. [2022-03-20 17:34:17,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1096 to 817. [2022-03-20 17:34:17,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 812 states have (on average 1.4396551724137931) internal successors, (1169), 812 states have internal predecessors, (1169), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:34:17,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1173 transitions. [2022-03-20 17:34:17,357 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1173 transitions. Word has length 168 [2022-03-20 17:34:17,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:34:17,357 INFO L478 AbstractCegarLoop]: Abstraction has 817 states and 1173 transitions. [2022-03-20 17:34:17,357 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 4 states have internal predecessors, (104), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:34:17,357 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1173 transitions. [2022-03-20 17:34:17,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-03-20 17:34:17,358 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:34:17,359 INFO L499 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:34:17,359 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-03-20 17:34:17,359 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:34:17,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:34:17,359 INFO L85 PathProgramCache]: Analyzing trace with hash -223230462, now seen corresponding path program 1 times [2022-03-20 17:34:17,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:34:17,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2133374128] [2022-03-20 17:34:33,935 WARN L232 SmtUtils]: Spent 10.58s on a formula simplification that was a NOOP. DAG size: 228 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-20 17:34:40,784 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:34:40,784 INFO L85 PathProgramCache]: Analyzing trace with hash -223230462, now seen corresponding path program 2 times [2022-03-20 17:34:40,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:34:40,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711248734] [2022-03-20 17:34:40,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:34:40,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:34:40,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:40,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:34:40,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:40,942 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 248 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-03-20 17:34:40,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:34:40,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711248734] [2022-03-20 17:34:40,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711248734] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:34:40,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:34:40,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:34:40,942 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:34:40,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2133374128] [2022-03-20 17:34:40,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2133374128] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:34:40,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:34:40,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:34:40,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744188741] [2022-03-20 17:34:40,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:34:40,943 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 17:34:40,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:34:40,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 17:34:40,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-20 17:34:40,943 INFO L87 Difference]: Start difference. First operand 817 states and 1173 transitions. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:34:42,951 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:34:43,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:34:43,367 INFO L93 Difference]: Finished difference Result 2002 states and 2895 transitions. [2022-03-20 17:34:43,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 17:34:43,367 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 169 [2022-03-20 17:34:43,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:34:43,371 INFO L225 Difference]: With dead ends: 2002 [2022-03-20 17:34:43,371 INFO L226 Difference]: Without dead ends: 1201 [2022-03-20 17:34:43,372 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-20 17:34:43,372 INFO L913 BasicCegarLoop]: 97 mSDtfsCounter, 114 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 46 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-20 17:34:43,373 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 278 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 382 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-03-20 17:34:43,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1201 states. [2022-03-20 17:34:43,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1201 to 827. [2022-03-20 17:34:43,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 827 states, 822 states have (on average 1.4294403892944039) internal successors, (1175), 822 states have internal predecessors, (1175), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:34:43,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 1179 transitions. [2022-03-20 17:34:43,408 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 1179 transitions. Word has length 169 [2022-03-20 17:34:43,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:34:43,409 INFO L478 AbstractCegarLoop]: Abstraction has 827 states and 1179 transitions. [2022-03-20 17:34:43,409 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:34:43,409 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 1179 transitions. [2022-03-20 17:34:43,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-03-20 17:34:43,410 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:34:43,410 INFO L499 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 7, 6, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:34:43,410 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-03-20 17:34:43,411 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:34:43,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:34:43,411 INFO L85 PathProgramCache]: Analyzing trace with hash -310692014, now seen corresponding path program 3 times [2022-03-20 17:34:43,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:34:43,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1372426643] [2022-03-20 17:34:57,691 WARN L232 SmtUtils]: Spent 9.42s on a formula simplification that was a NOOP. DAG size: 228 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-20 17:35:05,224 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:35:05,224 INFO L85 PathProgramCache]: Analyzing trace with hash -310692014, now seen corresponding path program 4 times [2022-03-20 17:35:05,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:35:05,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212689947] [2022-03-20 17:35:05,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:35:05,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:35:05,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:05,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:35:05,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:05,359 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 267 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2022-03-20 17:35:05,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:35:05,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212689947] [2022-03-20 17:35:05,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212689947] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:35:05,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:35:05,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:35:05,360 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:35:05,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1372426643] [2022-03-20 17:35:05,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1372426643] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:35:05,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:35:05,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:35:05,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229726907] [2022-03-20 17:35:05,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:35:05,360 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 17:35:05,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:35:05,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 17:35:05,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-20 17:35:05,361 INFO L87 Difference]: Start difference. First operand 827 states and 1179 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:35:07,368 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:35:07,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:35:07,769 INFO L93 Difference]: Finished difference Result 2012 states and 2887 transitions. [2022-03-20 17:35:07,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 17:35:07,770 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 171 [2022-03-20 17:35:07,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:35:07,773 INFO L225 Difference]: With dead ends: 2012 [2022-03-20 17:35:07,773 INFO L226 Difference]: Without dead ends: 1201 [2022-03-20 17:35:07,774 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-20 17:35:07,774 INFO L913 BasicCegarLoop]: 100 mSDtfsCounter, 108 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 44 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-03-20 17:35:07,774 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 286 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 386 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-03-20 17:35:07,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1201 states. [2022-03-20 17:35:07,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1201 to 842. [2022-03-20 17:35:07,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 837 states have (on average 1.4336917562724014) internal successors, (1200), 837 states have internal predecessors, (1200), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:35:07,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1204 transitions. [2022-03-20 17:35:07,814 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1204 transitions. Word has length 171 [2022-03-20 17:35:07,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:35:07,814 INFO L478 AbstractCegarLoop]: Abstraction has 842 states and 1204 transitions. [2022-03-20 17:35:07,814 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:35:07,814 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1204 transitions. [2022-03-20 17:35:07,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-03-20 17:35:07,816 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:35:07,816 INFO L499 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 7, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:35:07,816 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-03-20 17:35:07,816 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:35:07,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:35:07,816 INFO L85 PathProgramCache]: Analyzing trace with hash -228612804, now seen corresponding path program 1 times [2022-03-20 17:35:07,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:35:07,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [434921414] [2022-03-20 17:35:20,836 WARN L232 SmtUtils]: Spent 7.62s on a formula simplification that was a NOOP. DAG size: 228 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-20 17:35:27,180 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:35:27,180 INFO L85 PathProgramCache]: Analyzing trace with hash -228612804, now seen corresponding path program 2 times [2022-03-20 17:35:27,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:35:27,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888067506] [2022-03-20 17:35:27,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:35:27,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:35:27,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:27,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:35:27,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:27,326 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 271 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-03-20 17:35:27,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:35:27,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888067506] [2022-03-20 17:35:27,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888067506] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:35:27,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:35:27,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:35:27,327 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:35:27,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [434921414] [2022-03-20 17:35:27,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [434921414] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:35:27,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:35:27,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:35:27,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237164440] [2022-03-20 17:35:27,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:35:27,328 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 17:35:27,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:35:27,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 17:35:27,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-20 17:35:27,328 INFO L87 Difference]: Start difference. First operand 842 states and 1204 transitions. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 4 states have internal predecessors, (106), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:35:29,337 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 [] [2022-03-20 17:35:29,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:35:29,752 INFO L93 Difference]: Finished difference Result 2122 states and 3037 transitions. [2022-03-20 17:35:29,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 17:35:29,752 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 4 states have internal predecessors, (106), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 171 [2022-03-20 17:35:29,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:35:29,755 INFO L225 Difference]: With dead ends: 2122 [2022-03-20 17:35:29,755 INFO L226 Difference]: Without dead ends: 1296 [2022-03-20 17:35:29,757 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-20 17:35:29,757 INFO L913 BasicCegarLoop]: 102 mSDtfsCounter, 108 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 44 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-03-20 17:35:29,757 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 288 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 389 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-03-20 17:35:29,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1296 states. [2022-03-20 17:35:29,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1296 to 947. [2022-03-20 17:35:29,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 947 states, 942 states have (on average 1.4278131634819533) internal successors, (1345), 942 states have internal predecessors, (1345), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:35:29,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 947 states to 947 states and 1349 transitions. [2022-03-20 17:35:29,806 INFO L78 Accepts]: Start accepts. Automaton has 947 states and 1349 transitions. Word has length 171 [2022-03-20 17:35:29,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:35:29,806 INFO L478 AbstractCegarLoop]: Abstraction has 947 states and 1349 transitions. [2022-03-20 17:35:29,806 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 4 states have internal predecessors, (106), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:35:29,806 INFO L276 IsEmpty]: Start isEmpty. Operand 947 states and 1349 transitions. [2022-03-20 17:35:29,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-03-20 17:35:29,808 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:35:29,808 INFO L499 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 7, 6, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:35:29,808 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-03-20 17:35:29,808 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:35:29,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:35:29,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1837109397, now seen corresponding path program 1 times [2022-03-20 17:35:29,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:35:29,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [317135] [2022-03-20 17:35:42,772 WARN L232 SmtUtils]: Spent 7.76s on a formula simplification that was a NOOP. DAG size: 228 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-20 17:35:49,862 WARN L232 SmtUtils]: Spent 5.16s on a formula simplification that was a NOOP. DAG size: 153 (called from [L 269] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-20 17:35:51,656 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:35:51,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1837109397, now seen corresponding path program 2 times [2022-03-20 17:35:51,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:35:51,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22892974] [2022-03-20 17:35:51,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:35:51,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:35:51,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:51,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:35:51,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:51,780 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 270 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2022-03-20 17:35:51,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:35:51,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22892974] [2022-03-20 17:35:51,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22892974] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:35:51,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:35:51,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:35:51,781 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:35:51,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [317135] [2022-03-20 17:35:51,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [317135] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:35:51,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:35:51,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:35:51,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259672510] [2022-03-20 17:35:51,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:35:51,782 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 17:35:51,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:35:51,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 17:35:51,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-20 17:35:51,782 INFO L87 Difference]: Start difference. First operand 947 states and 1349 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:35:53,799 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 [] [2022-03-20 17:35:54,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:35:54,256 INFO L93 Difference]: Finished difference Result 2105 states and 3015 transitions. [2022-03-20 17:35:54,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 17:35:54,271 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 172 [2022-03-20 17:35:54,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:35:54,275 INFO L225 Difference]: With dead ends: 2105 [2022-03-20 17:35:54,275 INFO L226 Difference]: Without dead ends: 1174 [2022-03-20 17:35:54,276 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-20 17:35:54,277 INFO L913 BasicCegarLoop]: 224 mSDtfsCounter, 78 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-20 17:35:54,277 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 537 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 490 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-03-20 17:35:54,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1174 states. [2022-03-20 17:35:54,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1174 to 955. [2022-03-20 17:35:54,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 955 states, 950 states have (on average 1.4242105263157894) internal successors, (1353), 950 states have internal predecessors, (1353), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:35:54,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 955 states to 955 states and 1357 transitions. [2022-03-20 17:35:54,327 INFO L78 Accepts]: Start accepts. Automaton has 955 states and 1357 transitions. Word has length 172 [2022-03-20 17:35:54,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:35:54,327 INFO L478 AbstractCegarLoop]: Abstraction has 955 states and 1357 transitions. [2022-03-20 17:35:54,327 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:35:54,327 INFO L276 IsEmpty]: Start isEmpty. Operand 955 states and 1357 transitions. [2022-03-20 17:35:54,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-03-20 17:35:54,329 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:35:54,330 INFO L499 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 7, 6, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:35:54,330 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-03-20 17:35:54,330 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:35:54,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:35:54,330 INFO L85 PathProgramCache]: Analyzing trace with hash -68628705, now seen corresponding path program 1 times [2022-03-20 17:35:54,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:35:54,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1418352258] [2022-03-20 17:36:09,288 WARN L232 SmtUtils]: Spent 9.50s on a formula simplification that was a NOOP. DAG size: 228 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-20 17:36:15,978 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:36:15,979 INFO L85 PathProgramCache]: Analyzing trace with hash -68628705, now seen corresponding path program 2 times [2022-03-20 17:36:15,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:36:15,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492914558] [2022-03-20 17:36:15,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:36:15,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:36:16,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:16,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:36:16,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:16,115 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 273 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-03-20 17:36:16,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:36:16,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492914558] [2022-03-20 17:36:16,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492914558] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:36:16,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:36:16,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:36:16,115 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:36:16,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1418352258] [2022-03-20 17:36:16,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1418352258] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:36:16,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:36:16,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:36:16,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009497334] [2022-03-20 17:36:16,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:36:16,116 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 17:36:16,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:36:16,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 17:36:16,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-20 17:36:16,116 INFO L87 Difference]: Start difference. First operand 955 states and 1357 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:36:18,125 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 [] [2022-03-20 17:36:18,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:36:18,538 INFO L93 Difference]: Finished difference Result 2253 states and 3213 transitions. [2022-03-20 17:36:18,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 17:36:18,539 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 172 [2022-03-20 17:36:18,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:36:18,542 INFO L225 Difference]: With dead ends: 2253 [2022-03-20 17:36:18,542 INFO L226 Difference]: Without dead ends: 1314 [2022-03-20 17:36:18,543 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-20 17:36:18,543 INFO L913 BasicCegarLoop]: 97 mSDtfsCounter, 107 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 46 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-03-20 17:36:18,544 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 278 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 382 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-03-20 17:36:18,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1314 states. [2022-03-20 17:36:18,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1314 to 970. [2022-03-20 17:36:18,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 970 states, 965 states have (on average 1.427979274611399) internal successors, (1378), 965 states have internal predecessors, (1378), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:36:18,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1382 transitions. [2022-03-20 17:36:18,597 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1382 transitions. Word has length 172 [2022-03-20 17:36:18,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:36:18,597 INFO L478 AbstractCegarLoop]: Abstraction has 970 states and 1382 transitions. [2022-03-20 17:36:18,597 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:36:18,597 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1382 transitions. [2022-03-20 17:36:18,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-03-20 17:36:18,598 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:36:18,599 INFO L499 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 7, 6, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:36:18,599 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-03-20 17:36:18,599 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:36:18,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:36:18,599 INFO L85 PathProgramCache]: Analyzing trace with hash 506446570, now seen corresponding path program 1 times [2022-03-20 17:36:18,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:36:18,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1814603619] [2022-03-20 17:36:34,928 WARN L232 SmtUtils]: Spent 11.13s on a formula simplification that was a NOOP. DAG size: 228 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-20 17:36:41,261 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:36:41,262 INFO L85 PathProgramCache]: Analyzing trace with hash 506446570, now seen corresponding path program 2 times [2022-03-20 17:36:41,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:36:41,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476344171] [2022-03-20 17:36:41,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:36:41,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:36:41,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:41,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:36:41,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:41,424 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 105 proven. 5 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2022-03-20 17:36:41,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:36:41,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476344171] [2022-03-20 17:36:41,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476344171] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:36:41,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406438431] [2022-03-20 17:36:41,424 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:36:41,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:36:41,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:36:41,426 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 17:36:41,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-20 17:37:57,093 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 17:37:57,094 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:37:57,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 1545 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-20 17:37:57,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:37:57,211 INFO L356 Elim1Store]: treesize reduction 54, result has 44.3 percent of original size [2022-03-20 17:37:57,212 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 68 treesize of output 143 [2022-03-20 17:37:57,215 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 123 treesize of output 63 [2022-03-20 17:37:57,231 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2022-03-20 17:37:57,235 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9