/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/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/openssl/s3_clnt.blast.04.i.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-5d317bd [2022-03-19 13:42:33,602 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-19 13:42:33,603 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-19 13:42:33,623 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-19 13:42:33,624 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-19 13:42:33,625 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-19 13:42:33,626 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-19 13:42:33,627 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-19 13:42:33,628 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-19 13:42:33,629 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-19 13:42:33,630 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-19 13:42:33,630 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-19 13:42:33,631 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-19 13:42:33,631 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-19 13:42:33,632 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-19 13:42:33,633 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-19 13:42:33,633 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-19 13:42:33,634 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-19 13:42:33,635 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-19 13:42:33,636 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-19 13:42:33,637 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-19 13:42:33,640 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-19 13:42:33,641 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-19 13:42:33,642 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-19 13:42:33,642 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-19 13:42:33,644 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-19 13:42:33,649 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-19 13:42:33,649 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-19 13:42:33,656 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-19 13:42:33,656 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-03-19 13:42:33,662 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-19 13:42:33,662 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-19 13:42:33,663 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-19 13:42:33,663 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-19 13:42:33,663 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-19 13:42:33,663 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-19 13:42:33,663 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-19 13:42:33,663 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-19 13:42:33,663 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-19 13:42:33,663 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-19 13:42:33,664 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-19 13:42:33,664 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-19 13:42:33,664 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-19 13:42:33,664 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-19 13:42:33,664 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-19 13:42:33,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-19 13:42:33,664 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-19 13:42:33,664 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-19 13:42:33,664 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-03-19 13:42:33,664 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-03-19 13:42:33,665 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-19 13:42:33,665 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-03-19 13:42:33,665 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-19 13:42:33,839 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-19 13:42:33,868 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-19 13:42:33,870 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-19 13:42:33,870 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-19 13:42:33,871 INFO L275 PluginConnector]: CDTParser initialized [2022-03-19 13:42:33,872 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/openssl/s3_clnt.blast.04.i.cil-2.c [2022-03-19 13:42:33,927 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f03b0e89/1c502c2479bb4f179a2ec0e41b420de1/FLAG6d2e10d2c [2022-03-19 13:42:34,341 INFO L306 CDTParser]: Found 1 translation units. [2022-03-19 13:42:34,342 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/openssl/s3_clnt.blast.04.i.cil-2.c [2022-03-19 13:42:34,375 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f03b0e89/1c502c2479bb4f179a2ec0e41b420de1/FLAG6d2e10d2c [2022-03-19 13:42:34,387 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f03b0e89/1c502c2479bb4f179a2ec0e41b420de1 [2022-03-19 13:42:34,389 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-19 13:42:34,391 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-19 13:42:34,393 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-19 13:42:34,393 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-19 13:42:34,396 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-19 13:42:34,396 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 01:42:34" (1/1) ... [2022-03-19 13:42:34,397 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3097411c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:42:34, skipping insertion in model container [2022-03-19 13:42:34,397 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 01:42:34" (1/1) ... [2022-03-19 13:42:34,401 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-19 13:42:34,449 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-19 13:42:34,701 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.04.i.cil-2.c[65405,65418] [2022-03-19 13:42:34,712 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-19 13:42:34,720 INFO L203 MainTranslator]: Completed pre-run [2022-03-19 13:42:34,790 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.04.i.cil-2.c[65405,65418] [2022-03-19 13:42:34,792 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-19 13:42:34,807 INFO L208 MainTranslator]: Completed translation [2022-03-19 13:42:34,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:42:34 WrapperNode [2022-03-19 13:42:34,808 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-19 13:42:34,808 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-19 13:42:34,809 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-19 13:42:34,809 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-19 13:42:34,816 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:42:34" (1/1) ... [2022-03-19 13:42:34,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:42:34" (1/1) ... [2022-03-19 13:42:34,842 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:42:34" (1/1) ... [2022-03-19 13:42:34,843 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:42:34" (1/1) ... [2022-03-19 13:42:34,871 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:42:34" (1/1) ... [2022-03-19 13:42:34,877 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:42:34" (1/1) ... [2022-03-19 13:42:34,879 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:42:34" (1/1) ... [2022-03-19 13:42:34,882 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-19 13:42:34,883 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-19 13:42:34,883 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-19 13:42:34,883 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-19 13:42:34,897 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:42:34" (1/1) ... [2022-03-19 13:42:34,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-19 13:42:34,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 13:42:34,931 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) [2022-03-19 13:42:34,956 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 [2022-03-19 13:42:34,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-19 13:42:34,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-19 13:42:34,967 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-19 13:42:34,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_get_client_method [2022-03-19 13:42:34,967 INFO L138 BoogieDeclarations]: Found implementation of procedure SSLv3_client_method [2022-03-19 13:42:34,967 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-19 13:42:34,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_connect [2022-03-19 13:42:34,968 INFO L138 BoogieDeclarations]: Found implementation of procedure sslv3_base_method [2022-03-19 13:42:34,968 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-03-19 13:42:34,968 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-03-19 13:42:34,968 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-19 13:42:34,968 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-19 13:42:34,968 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-19 13:42:34,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-19 13:42:34,969 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-03-19 13:42:34,970 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-03-19 13:42:34,970 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-19 13:42:34,970 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-03-19 13:42:34,971 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2022-03-19 13:42:34,971 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2022-03-19 13:42:34,971 INFO L130 BoogieDeclarations]: Found specification of procedure SSLv3_client_method [2022-03-19 13:42:34,971 INFO L130 BoogieDeclarations]: Found specification of procedure sslv3_base_method [2022-03-19 13:42:34,971 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_connect [2022-03-19 13:42:34,971 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_get_client_method [2022-03-19 13:42:34,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-03-19 13:42:34,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-03-19 13:42:34,971 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-19 13:42:34,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-03-19 13:42:34,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-19 13:42:34,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-03-19 13:42:34,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-19 13:42:34,972 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2022-03-19 13:42:34,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-03-19 13:42:34,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-19 13:42:34,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-19 13:42:34,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-19 13:42:34,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-03-19 13:42:34,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-03-19 13:42:34,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-03-19 13:42:34,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-03-19 13:42:34,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-19 13:42:35,119 INFO L234 CfgBuilder]: Building ICFG [2022-03-19 13:42:35,125 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-19 13:42:36,328 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 13:42:36,742 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2022-03-19 13:42:36,742 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2022-03-19 13:42:36,751 INFO L275 CfgBuilder]: Performing block encoding [2022-03-19 13:42:36,758 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-19 13:42:36,758 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-19 13:42:36,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 01:42:36 BoogieIcfgContainer [2022-03-19 13:42:36,760 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-19 13:42:36,763 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-19 13:42:36,763 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-19 13:42:36,766 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-19 13:42:36,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.03 01:42:34" (1/3) ... [2022-03-19 13:42:36,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@383e1bed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 01:42:36, skipping insertion in model container [2022-03-19 13:42:36,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:42:34" (2/3) ... [2022-03-19 13:42:36,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@383e1bed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 01:42:36, skipping insertion in model container [2022-03-19 13:42:36,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 01:42:36" (3/3) ... [2022-03-19 13:42:36,768 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt.blast.04.i.cil-2.c [2022-03-19 13:42:36,772 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-19 13:42:36,772 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-19 13:42:36,816 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-19 13:42:36,824 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 [2022-03-19 13:42:36,824 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-19 13:42:36,846 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) [2022-03-19 13:42:36,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-03-19 13:42:36,866 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:42:36,866 INFO L500 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] [2022-03-19 13:42:36,867 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:42:36,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:42:36,870 INFO L85 PathProgramCache]: Analyzing trace with hash -22644822, now seen corresponding path program 1 times [2022-03-19 13:42:36,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:42:36,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [314796178] [2022-03-19 13:42:36,883 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 13:42:36,884 INFO L85 PathProgramCache]: Analyzing trace with hash -22644822, now seen corresponding path program 2 times [2022-03-19 13:42:36,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:42:36,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962671670] [2022-03-19 13:42:36,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:42:36,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:42:37,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:42:37,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:42:37,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:42:37,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 13:42:37,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:42:37,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962671670] [2022-03-19 13:42:37,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962671670] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:42:37,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:42:37,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:42:37,358 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:42:37,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [314796178] [2022-03-19 13:42:37,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [314796178] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:42:37,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:42:37,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:42:37,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232013164] [2022-03-19 13:42:37,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:42:37,361 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 13:42:37,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:42:37,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 13:42:37,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 13:42:37,386 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) [2022-03-19 13:42:39,425 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 [] [2022-03-19 13:42:39,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:42:39,879 INFO L93 Difference]: Finished difference Result 267 states and 442 transitions. [2022-03-19 13:42:39,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 13:42:39,881 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 [2022-03-19 13:42:39,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:42:39,887 INFO L225 Difference]: With dead ends: 267 [2022-03-19 13:42:39,887 INFO L226 Difference]: Without dead ends: 122 [2022-03-19 13:42:39,890 INFO L911 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 [2022-03-19 13:42:39,892 INFO L912 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 [2022-03-19 13:42:39,893 INFO L913 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] [2022-03-19 13:42:39,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-03-19 13:42:39,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 121. [2022-03-19 13:42:39,923 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) [2022-03-19 13:42:39,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 178 transitions. [2022-03-19 13:42:39,925 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 178 transitions. Word has length 30 [2022-03-19 13:42:39,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:42:39,925 INFO L478 AbstractCegarLoop]: Abstraction has 121 states and 178 transitions. [2022-03-19 13:42:39,926 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) [2022-03-19 13:42:39,926 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 178 transitions. [2022-03-19 13:42:39,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-03-19 13:42:39,927 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:42:39,927 INFO L500 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] [2022-03-19 13:42:39,927 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-19 13:42:39,927 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:42:39,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:42:39,928 INFO L85 PathProgramCache]: Analyzing trace with hash 868047042, now seen corresponding path program 1 times [2022-03-19 13:42:39,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:42:39,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [117609260] [2022-03-19 13:42:39,928 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:42:39,929 INFO L85 PathProgramCache]: Analyzing trace with hash 868047042, now seen corresponding path program 2 times [2022-03-19 13:42:39,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:42:39,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88460425] [2022-03-19 13:42:39,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:42:39,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:42:40,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:42:40,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:42:40,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:42:40,112 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-19 13:42:40,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:42:40,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88460425] [2022-03-19 13:42:40,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88460425] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:42:40,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:42:40,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-19 13:42:40,120 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:42:40,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [117609260] [2022-03-19 13:42:40,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [117609260] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:42:40,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:42:40,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-19 13:42:40,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488896098] [2022-03-19 13:42:40,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:42:40,121 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-19 13:42:40,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:42:40,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-19 13:42:40,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-19 13:42:40,122 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) [2022-03-19 13:42:41,193 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:42:43,209 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:42:45,229 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 [] [2022-03-19 13:42:45,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:42:45,455 INFO L93 Difference]: Finished difference Result 327 states and 490 transitions. [2022-03-19 13:42:45,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-19 13:42:45,456 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 [2022-03-19 13:42:45,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:42:45,457 INFO L225 Difference]: With dead ends: 327 [2022-03-19 13:42:45,457 INFO L226 Difference]: Without dead ends: 222 [2022-03-19 13:42:45,458 INFO L911 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 [2022-03-19 13:42:45,459 INFO L912 BasicCegarLoop]: 166 mSDtfsCounter, 124 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-03-19 13:42:45,459 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 319 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 191 Invalid, 2 Unknown, 0 Unchecked, 5.3s Time] [2022-03-19 13:42:45,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-03-19 13:42:45,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2022-03-19 13:42:45,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 217 states have (on average 1.4838709677419355) internal successors, (322), 217 states have internal predecessors, (322), 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) [2022-03-19 13:42:45,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 326 transitions. [2022-03-19 13:42:45,485 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 326 transitions. Word has length 44 [2022-03-19 13:42:45,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:42:45,486 INFO L478 AbstractCegarLoop]: Abstraction has 222 states and 326 transitions. [2022-03-19 13:42:45,486 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) [2022-03-19 13:42:45,486 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 326 transitions. [2022-03-19 13:42:45,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-03-19 13:42:45,487 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:42:45,487 INFO L500 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] [2022-03-19 13:42:45,490 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-19 13:42:45,490 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:42:45,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:42:45,491 INFO L85 PathProgramCache]: Analyzing trace with hash -446115060, now seen corresponding path program 1 times [2022-03-19 13:42:45,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:42:45,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [37693241] [2022-03-19 13:42:45,491 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:42:45,491 INFO L85 PathProgramCache]: Analyzing trace with hash -446115060, now seen corresponding path program 2 times [2022-03-19 13:42:45,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:42:45,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47494242] [2022-03-19 13:42:45,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:42:45,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:42:45,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:42:45,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:42:45,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:42:45,701 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-19 13:42:45,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:42:45,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47494242] [2022-03-19 13:42:45,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47494242] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:42:45,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:42:45,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:42:45,704 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:42:45,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [37693241] [2022-03-19 13:42:45,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [37693241] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:42:45,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:42:45,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:42:45,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681580829] [2022-03-19 13:42:45,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:42:45,705 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 13:42:45,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:42:45,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 13:42:45,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 13:42:45,706 INFO L87 Difference]: Start difference. First operand 222 states and 326 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) [2022-03-19 13:42:47,715 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 [] [2022-03-19 13:42:48,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:42:48,101 INFO L93 Difference]: Finished difference Result 611 states and 908 transitions. [2022-03-19 13:42:48,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 13:42:48,101 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 [2022-03-19 13:42:48,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:42:48,104 INFO L225 Difference]: With dead ends: 611 [2022-03-19 13:42:48,104 INFO L226 Difference]: Without dead ends: 405 [2022-03-19 13:42:48,105 INFO L911 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 [2022-03-19 13:42:48,105 INFO L912 BasicCegarLoop]: 97 mSDtfsCounter, 106 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 44 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-19 13:42:48,106 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 279 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 383 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-03-19 13:42:48,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2022-03-19 13:42:48,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 270. [2022-03-19 13:42:48,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 265 states have (on average 1.5320754716981133) internal successors, (406), 265 states have internal predecessors, (406), 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) [2022-03-19 13:42:48,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 410 transitions. [2022-03-19 13:42:48,121 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 410 transitions. Word has length 59 [2022-03-19 13:42:48,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:42:48,122 INFO L478 AbstractCegarLoop]: Abstraction has 270 states and 410 transitions. [2022-03-19 13:42:48,122 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) [2022-03-19 13:42:48,122 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 410 transitions. [2022-03-19 13:42:48,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-03-19 13:42:48,123 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:42:48,123 INFO L500 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, 1] [2022-03-19 13:42:48,124 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-19 13:42:48,124 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:42:48,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:42:48,124 INFO L85 PathProgramCache]: Analyzing trace with hash -949350737, now seen corresponding path program 1 times [2022-03-19 13:42:48,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:42:48,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [625751691] [2022-03-19 13:42:48,125 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:42:48,125 INFO L85 PathProgramCache]: Analyzing trace with hash -949350737, now seen corresponding path program 2 times [2022-03-19 13:42:48,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:42:48,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992333275] [2022-03-19 13:42:48,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:42:48,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:42:48,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:42:48,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:42:48,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:42:48,289 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-19 13:42:48,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:42:48,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992333275] [2022-03-19 13:42:48,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992333275] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:42:48,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:42:48,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:42:48,290 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:42:48,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [625751691] [2022-03-19 13:42:48,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [625751691] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:42:48,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:42:48,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:42:48,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119631985] [2022-03-19 13:42:48,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:42:48,291 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 13:42:48,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:42:48,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 13:42:48,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 13:42:48,295 INFO L87 Difference]: Start difference. First operand 270 states and 410 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 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) [2022-03-19 13:42:50,315 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 [] [2022-03-19 13:42:50,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:42:50,707 INFO L93 Difference]: Finished difference Result 707 states and 1076 transitions. [2022-03-19 13:42:50,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 13:42:50,707 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 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 60 [2022-03-19 13:42:50,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:42:50,709 INFO L225 Difference]: With dead ends: 707 [2022-03-19 13:42:50,709 INFO L226 Difference]: Without dead ends: 453 [2022-03-19 13:42:50,710 INFO L911 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 [2022-03-19 13:42:50,710 INFO L912 BasicCegarLoop]: 97 mSDtfsCounter, 106 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 46 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 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 [2022-03-19 13:42:50,711 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 278 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 382 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-03-19 13:42:50,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2022-03-19 13:42:50,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 320. [2022-03-19 13:42:50,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 315 states have (on average 1.5682539682539682) internal successors, (494), 315 states have internal predecessors, (494), 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) [2022-03-19 13:42:50,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 498 transitions. [2022-03-19 13:42:50,731 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 498 transitions. Word has length 60 [2022-03-19 13:42:50,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:42:50,731 INFO L478 AbstractCegarLoop]: Abstraction has 320 states and 498 transitions. [2022-03-19 13:42:50,731 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 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) [2022-03-19 13:42:50,731 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 498 transitions. [2022-03-19 13:42:50,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-03-19 13:42:50,738 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:42:50,738 INFO L500 BasicCegarLoop]: trace histogram [4, 4, 3, 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] [2022-03-19 13:42:50,739 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-19 13:42:50,739 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:42:50,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:42:50,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1308079053, now seen corresponding path program 1 times [2022-03-19 13:42:50,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:42:50,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [250885040] [2022-03-19 13:42:50,740 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:42:50,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1308079053, now seen corresponding path program 2 times [2022-03-19 13:42:50,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:42:50,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364959731] [2022-03-19 13:42:50,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:42:50,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:42:50,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:42:50,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:42:50,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:42:50,868 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-19 13:42:50,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:42:50,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364959731] [2022-03-19 13:42:50,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364959731] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:42:50,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:42:50,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-19 13:42:50,869 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:42:50,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [250885040] [2022-03-19 13:42:50,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [250885040] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:42:50,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:42:50,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-19 13:42:50,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660208481] [2022-03-19 13:42:50,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:42:50,872 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-19 13:42:50,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:42:50,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-19 13:42:50,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-19 13:42:50,872 INFO L87 Difference]: Start difference. First operand 320 states and 498 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 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) [2022-03-19 13:42:52,883 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 [] [2022-03-19 13:42:53,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:42:53,294 INFO L93 Difference]: Finished difference Result 623 states and 981 transitions. [2022-03-19 13:42:53,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-19 13:42:53,294 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 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 80 [2022-03-19 13:42:53,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:42:53,296 INFO L225 Difference]: With dead ends: 623 [2022-03-19 13:42:53,296 INFO L226 Difference]: Without dead ends: 469 [2022-03-19 13:42:53,297 INFO L911 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 [2022-03-19 13:42:53,297 INFO L912 BasicCegarLoop]: 308 mSDtfsCounter, 126 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-19 13:42:53,297 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 470 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 332 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-03-19 13:42:53,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2022-03-19 13:42:53,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 469. [2022-03-19 13:42:53,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 464 states have (on average 1.5668103448275863) internal successors, (727), 464 states have internal predecessors, (727), 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) [2022-03-19 13:42:53,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 731 transitions. [2022-03-19 13:42:53,326 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 731 transitions. Word has length 80 [2022-03-19 13:42:53,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:42:53,328 INFO L478 AbstractCegarLoop]: Abstraction has 469 states and 731 transitions. [2022-03-19 13:42:53,328 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 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) [2022-03-19 13:42:53,328 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 731 transitions. [2022-03-19 13:42:53,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-03-19 13:42:53,329 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:42:53,329 INFO L500 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:42:53,330 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-19 13:42:53,330 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:42:53,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:42:53,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1829686905, now seen corresponding path program 1 times [2022-03-19 13:42:53,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:42:53,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1128092894] [2022-03-19 13:42:53,331 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:42:53,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1829686905, now seen corresponding path program 2 times [2022-03-19 13:42:53,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:42:53,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685685577] [2022-03-19 13:42:53,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:42:53,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:42:53,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:42:53,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:42:53,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:42:53,485 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-03-19 13:42:53,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:42:53,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685685577] [2022-03-19 13:42:53,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685685577] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:42:53,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:42:53,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-19 13:42:53,486 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:42:53,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1128092894] [2022-03-19 13:42:53,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1128092894] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:42:53,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:42:53,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-19 13:42:53,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584469316] [2022-03-19 13:42:53,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:42:53,487 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-19 13:42:53,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:42:53,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-19 13:42:53,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-19 13:42:53,487 INFO L87 Difference]: Start difference. First operand 469 states and 731 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 3 states have internal predecessors, (82), 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) [2022-03-19 13:42:55,496 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 [] [2022-03-19 13:42:55,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:42:55,926 INFO L93 Difference]: Finished difference Result 922 states and 1448 transitions. [2022-03-19 13:42:55,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-19 13:42:55,926 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 3 states have internal predecessors, (82), 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 98 [2022-03-19 13:42:55,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:42:55,929 INFO L225 Difference]: With dead ends: 922 [2022-03-19 13:42:55,929 INFO L226 Difference]: Without dead ends: 619 [2022-03-19 13:42:55,929 INFO L911 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 [2022-03-19 13:42:55,930 INFO L912 BasicCegarLoop]: 315 mSDtfsCounter, 127 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-19 13:42:55,930 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 477 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 337 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-03-19 13:42:55,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2022-03-19 13:42:55,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 619. [2022-03-19 13:42:55,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 619 states, 614 states have (on average 1.5667752442996743) internal successors, (962), 614 states have internal predecessors, (962), 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) [2022-03-19 13:42:55,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 966 transitions. [2022-03-19 13:42:55,952 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 966 transitions. Word has length 98 [2022-03-19 13:42:55,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:42:55,953 INFO L478 AbstractCegarLoop]: Abstraction has 619 states and 966 transitions. [2022-03-19 13:42:55,953 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 3 states have internal predecessors, (82), 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) [2022-03-19 13:42:55,953 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 966 transitions. [2022-03-19 13:42:55,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-03-19 13:42:55,958 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:42:55,958 INFO L500 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] [2022-03-19 13:42:55,958 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-19 13:42:55,958 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:42:55,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:42:55,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1108655063, now seen corresponding path program 1 times [2022-03-19 13:42:55,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:42:55,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [422149117] [2022-03-19 13:42:55,963 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:42:55,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1108655063, now seen corresponding path program 2 times [2022-03-19 13:42:55,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:42:55,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204682888] [2022-03-19 13:42:55,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:42:55,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:42:56,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:42:56,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:42:56,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:42:56,125 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-03-19 13:42:56,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:42:56,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204682888] [2022-03-19 13:42:56,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204682888] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:42:56,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:42:56,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-19 13:42:56,126 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:42:56,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [422149117] [2022-03-19 13:42:56,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [422149117] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:42:56,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:42:56,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-19 13:42:56,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588410460] [2022-03-19 13:42:56,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:42:56,126 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-19 13:42:56,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:42:56,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-19 13:42:56,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-19 13:42:56,127 INFO L87 Difference]: Start difference. First operand 619 states and 966 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) [2022-03-19 13:42:58,135 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 [] [2022-03-19 13:42:58,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:42:58,560 INFO L93 Difference]: Finished difference Result 1223 states and 1920 transitions. [2022-03-19 13:42:58,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-19 13:42:58,560 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 [2022-03-19 13:42:58,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:42:58,564 INFO L225 Difference]: With dead ends: 1223 [2022-03-19 13:42:58,565 INFO L226 Difference]: Without dead ends: 770 [2022-03-19 13:42:58,566 INFO L911 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 [2022-03-19 13:42:58,567 INFO L912 BasicCegarLoop]: 316 mSDtfsCounter, 127 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-19 13:42:58,567 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 478 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 341 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-03-19 13:42:58,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2022-03-19 13:42:58,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 770. [2022-03-19 13:42:58,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 770 states, 765 states have (on average 1.5660130718954248) internal successors, (1198), 765 states have internal predecessors, (1198), 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) [2022-03-19 13:42:58,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 1202 transitions. [2022-03-19 13:42:58,590 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 1202 transitions. Word has length 118 [2022-03-19 13:42:58,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:42:58,590 INFO L478 AbstractCegarLoop]: Abstraction has 770 states and 1202 transitions. [2022-03-19 13:42:58,590 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) [2022-03-19 13:42:58,591 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 1202 transitions. [2022-03-19 13:42:58,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-03-19 13:42:58,592 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:42:58,592 INFO L500 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] [2022-03-19 13:42:58,592 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-19 13:42:58,592 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:42:58,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:42:58,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1249203673, now seen corresponding path program 1 times [2022-03-19 13:42:58,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:42:58,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [909591708] [2022-03-19 13:42:58,594 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:42:58,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1249203673, now seen corresponding path program 2 times [2022-03-19 13:42:58,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:42:58,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044685070] [2022-03-19 13:42:58,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:42:58,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:42:58,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:42:58,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:42:58,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:42:58,743 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-03-19 13:42:58,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:42:58,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044685070] [2022-03-19 13:42:58,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044685070] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:42:58,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:42:58,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-19 13:42:58,744 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:42:58,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [909591708] [2022-03-19 13:42:58,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [909591708] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:42:58,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:42:58,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-19 13:42:58,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189957147] [2022-03-19 13:42:58,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:42:58,745 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-19 13:42:58,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:42:58,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-19 13:42:58,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-19 13:42:58,746 INFO L87 Difference]: Start difference. First operand 770 states and 1202 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 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) [2022-03-19 13:43:00,753 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 [] [2022-03-19 13:43:01,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:43:01,162 INFO L93 Difference]: Finished difference Result 1500 states and 2348 transitions. [2022-03-19 13:43:01,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-19 13:43:01,163 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 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 [2022-03-19 13:43:01,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:43:01,166 INFO L225 Difference]: With dead ends: 1500 [2022-03-19 13:43:01,166 INFO L226 Difference]: Without dead ends: 896 [2022-03-19 13:43:01,167 INFO L911 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 [2022-03-19 13:43:01,168 INFO L912 BasicCegarLoop]: 314 mSDtfsCounter, 128 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 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 [2022-03-19 13:43:01,168 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 476 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 338 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-03-19 13:43:01,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2022-03-19 13:43:01,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 896. [2022-03-19 13:43:01,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 896 states, 891 states have (on average 1.5600448933782267) internal successors, (1390), 891 states have internal predecessors, (1390), 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) [2022-03-19 13:43:01,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 1394 transitions. [2022-03-19 13:43:01,191 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 1394 transitions. Word has length 118 [2022-03-19 13:43:01,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:43:01,192 INFO L478 AbstractCegarLoop]: Abstraction has 896 states and 1394 transitions. [2022-03-19 13:43:01,192 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 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) [2022-03-19 13:43:01,192 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 1394 transitions. [2022-03-19 13:43:01,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-03-19 13:43:01,194 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:43:01,194 INFO L500 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:43:01,194 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-19 13:43:01,194 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:43:01,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:43:01,194 INFO L85 PathProgramCache]: Analyzing trace with hash -154258084, now seen corresponding path program 1 times [2022-03-19 13:43:01,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:43:01,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1310644954] [2022-03-19 13:43:11,750 WARN L232 SmtUtils]: Spent 6.72s on a formula simplification that was a NOOP. DAG size: 229 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-19 13:43:19,318 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:43:19,319 INFO L85 PathProgramCache]: Analyzing trace with hash -154258084, now seen corresponding path program 2 times [2022-03-19 13:43:19,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:43:19,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801746207] [2022-03-19 13:43:19,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:43:19,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:43:19,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:43:19,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:43:19,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:43:19,496 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-03-19 13:43:19,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:43:19,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801746207] [2022-03-19 13:43:19,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801746207] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:43:19,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:43:19,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:43:19,497 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:43:19,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1310644954] [2022-03-19 13:43:19,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1310644954] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:43:19,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:43:19,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:43:19,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930475894] [2022-03-19 13:43:19,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:43:19,497 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 13:43:19,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:43:19,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 13:43:19,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 13:43:19,498 INFO L87 Difference]: Start difference. First operand 896 states and 1394 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 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) [2022-03-19 13:43:21,507 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 [] [2022-03-19 13:43:22,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:43:22,015 INFO L93 Difference]: Finished difference Result 2294 states and 3524 transitions. [2022-03-19 13:43:22,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 13:43:22,015 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 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 160 [2022-03-19 13:43:22,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:43:22,021 INFO L225 Difference]: With dead ends: 2294 [2022-03-19 13:43:22,021 INFO L226 Difference]: Without dead ends: 1414 [2022-03-19 13:43:22,024 INFO L911 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 [2022-03-19 13:43:22,026 INFO L912 BasicCegarLoop]: 98 mSDtfsCounter, 111 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 43 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-19 13:43:22,026 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 280 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 385 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-03-19 13:43:22,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1414 states. [2022-03-19 13:43:22,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1414 to 1001. [2022-03-19 13:43:22,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1001 states, 996 states have (on average 1.5652610441767068) internal successors, (1559), 996 states have internal predecessors, (1559), 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) [2022-03-19 13:43:22,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 1563 transitions. [2022-03-19 13:43:22,073 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 1563 transitions. Word has length 160 [2022-03-19 13:43:22,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:43:22,073 INFO L478 AbstractCegarLoop]: Abstraction has 1001 states and 1563 transitions. [2022-03-19 13:43:22,073 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 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) [2022-03-19 13:43:22,073 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 1563 transitions. [2022-03-19 13:43:22,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-03-19 13:43:22,076 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:43:22,076 INFO L500 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:43:22,076 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-19 13:43:22,077 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:43:22,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:43:22,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1057182855, now seen corresponding path program 1 times [2022-03-19 13:43:22,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:43:22,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1564364412] [2022-03-19 13:43:35,469 WARN L232 SmtUtils]: Spent 9.31s on a formula simplification that was a NOOP. DAG size: 229 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-19 13:43:42,548 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:43:42,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1057182855, now seen corresponding path program 2 times [2022-03-19 13:43:42,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:43:42,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867747477] [2022-03-19 13:43:42,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:43:42,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:43:42,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:43:42,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:43:42,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:43:42,712 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 217 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-03-19 13:43:42,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:43:42,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867747477] [2022-03-19 13:43:42,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867747477] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:43:42,712 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:43:42,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:43:42,713 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:43:42,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1564364412] [2022-03-19 13:43:42,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1564364412] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:43:42,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:43:42,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:43:42,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670683848] [2022-03-19 13:43:42,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:43:42,713 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 13:43:42,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:43:42,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 13:43:42,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 13:43:42,714 INFO L87 Difference]: Start difference. First operand 1001 states and 1563 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) [2022-03-19 13:43:44,722 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 [] [2022-03-19 13:43:45,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:43:45,160 INFO L93 Difference]: Finished difference Result 2368 states and 3635 transitions. [2022-03-19 13:43:45,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 13:43:45,160 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 161 [2022-03-19 13:43:45,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:43:45,164 INFO L225 Difference]: With dead ends: 2368 [2022-03-19 13:43:45,164 INFO L226 Difference]: Without dead ends: 1383 [2022-03-19 13:43:45,166 INFO L911 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 [2022-03-19 13:43:45,167 INFO L912 BasicCegarLoop]: 97 mSDtfsCounter, 109 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 46 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 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 [2022-03-19 13:43:45,167 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 278 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 382 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-03-19 13:43:45,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1383 states. [2022-03-19 13:43:45,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1383 to 1001. [2022-03-19 13:43:45,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1001 states, 996 states have (on average 1.5542168674698795) internal successors, (1548), 996 states have internal predecessors, (1548), 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) [2022-03-19 13:43:45,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 1552 transitions. [2022-03-19 13:43:45,202 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 1552 transitions. Word has length 161 [2022-03-19 13:43:45,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:43:45,202 INFO L478 AbstractCegarLoop]: Abstraction has 1001 states and 1552 transitions. [2022-03-19 13:43:45,202 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) [2022-03-19 13:43:45,202 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 1552 transitions. [2022-03-19 13:43:45,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-03-19 13:43:45,213 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:43:45,214 INFO L500 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:43:45,214 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-19 13:43:45,214 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:43:45,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:43:45,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1464555500, now seen corresponding path program 1 times [2022-03-19 13:43:45,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:43:45,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1480221930] [2022-03-19 13:44:00,126 WARN L232 SmtUtils]: Spent 11.18s on a formula simplification that was a NOOP. DAG size: 229 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-19 13:44:07,879 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:44:07,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1464555500, now seen corresponding path program 2 times [2022-03-19 13:44:07,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:44:07,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376691596] [2022-03-19 13:44:07,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:44:07,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:44:07,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:44:08,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:44:08,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:44:08,011 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 281 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-03-19 13:44:08,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:44:08,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376691596] [2022-03-19 13:44:08,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376691596] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:44:08,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:44:08,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:44:08,012 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:44:08,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1480221930] [2022-03-19 13:44:08,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1480221930] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:44:08,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:44:08,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:44:08,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192340162] [2022-03-19 13:44:08,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:44:08,012 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 13:44:08,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:44:08,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 13:44:08,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 13:44:08,013 INFO L87 Difference]: Start difference. First operand 1001 states and 1552 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) [2022-03-19 13:44:10,027 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 [] [2022-03-19 13:44:10,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:44:10,438 INFO L93 Difference]: Finished difference Result 2493 states and 3818 transitions. [2022-03-19 13:44:10,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 13:44:10,438 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 178 [2022-03-19 13:44:10,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:44:10,442 INFO L225 Difference]: With dead ends: 2493 [2022-03-19 13:44:10,442 INFO L226 Difference]: Without dead ends: 1508 [2022-03-19 13:44:10,444 INFO L911 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 [2022-03-19 13:44:10,444 INFO L912 BasicCegarLoop]: 99 mSDtfsCounter, 109 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 44 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-19 13:44:10,445 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 284 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 385 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-03-19 13:44:10,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1508 states. [2022-03-19 13:44:10,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1508 to 1091. [2022-03-19 13:44:10,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 1086 states have (on average 1.5534069981583793) internal successors, (1687), 1086 states have internal predecessors, (1687), 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) [2022-03-19 13:44:10,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1691 transitions. [2022-03-19 13:44:10,484 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1691 transitions. Word has length 178 [2022-03-19 13:44:10,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:44:10,484 INFO L478 AbstractCegarLoop]: Abstraction has 1091 states and 1691 transitions. [2022-03-19 13:44:10,484 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) [2022-03-19 13:44:10,485 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1691 transitions. [2022-03-19 13:44:10,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-03-19 13:44:10,487 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:44:10,487 INFO L500 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 5, 3, 3, 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] [2022-03-19 13:44:10,487 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-19 13:44:10,487 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:44:10,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:44:10,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1065449955, now seen corresponding path program 1 times [2022-03-19 13:44:10,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:44:10,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [437403277] [2022-03-19 13:44:25,488 WARN L232 SmtUtils]: Spent 11.12s on a formula simplification that was a NOOP. DAG size: 229 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-19 13:44:31,559 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:44:31,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1065449955, now seen corresponding path program 2 times [2022-03-19 13:44:31,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:44:31,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557939081] [2022-03-19 13:44:31,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:44:31,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:44:31,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:44:31,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:44:31,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:44:31,732 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 286 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-03-19 13:44:31,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:44:31,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557939081] [2022-03-19 13:44:31,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557939081] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:44:31,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:44:31,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:44:31,733 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:44:31,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [437403277] [2022-03-19 13:44:31,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [437403277] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:44:31,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:44:31,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:44:31,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377637228] [2022-03-19 13:44:31,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:44:31,733 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 13:44:31,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:44:31,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 13:44:31,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 13:44:31,734 INFO L87 Difference]: Start difference. First operand 1091 states and 1691 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) [2022-03-19 13:44:33,742 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 [] [2022-03-19 13:44:34,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:44:34,230 INFO L93 Difference]: Finished difference Result 2452 states and 3760 transitions. [2022-03-19 13:44:34,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 13:44:34,230 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 179 [2022-03-19 13:44:34,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:44:34,234 INFO L225 Difference]: With dead ends: 2452 [2022-03-19 13:44:34,234 INFO L226 Difference]: Without dead ends: 1377 [2022-03-19 13:44:34,236 INFO L911 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 [2022-03-19 13:44:34,236 INFO L912 BasicCegarLoop]: 226 mSDtfsCounter, 86 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-19 13:44:34,236 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 541 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 511 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-03-19 13:44:34,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1377 states. [2022-03-19 13:44:34,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1377 to 1091. [2022-03-19 13:44:34,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 1086 states have (on average 1.5488029465930018) internal successors, (1682), 1086 states have internal predecessors, (1682), 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) [2022-03-19 13:44:34,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1686 transitions. [2022-03-19 13:44:34,284 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1686 transitions. Word has length 179 [2022-03-19 13:44:34,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:44:34,285 INFO L478 AbstractCegarLoop]: Abstraction has 1091 states and 1686 transitions. [2022-03-19 13:44:34,285 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) [2022-03-19 13:44:34,285 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1686 transitions. [2022-03-19 13:44:34,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-03-19 13:44:34,287 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:44:34,287 INFO L500 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 6, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:44:34,287 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-03-19 13:44:34,287 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:44:34,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:44:34,288 INFO L85 PathProgramCache]: Analyzing trace with hash 624136773, now seen corresponding path program 3 times [2022-03-19 13:44:34,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:44:34,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1934356929] [2022-03-19 13:44:42,757 WARN L232 SmtUtils]: Spent 7.88s on a formula simplification that was a NOOP. DAG size: 229 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-19 13:44:49,615 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:44:49,616 INFO L85 PathProgramCache]: Analyzing trace with hash 624136773, now seen corresponding path program 4 times [2022-03-19 13:44:49,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:44:49,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285114758] [2022-03-19 13:44:49,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:44:49,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:44:49,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:44:49,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:44:49,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:44:49,771 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 303 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2022-03-19 13:44:49,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:44:49,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285114758] [2022-03-19 13:44:49,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285114758] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:44:49,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:44:49,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:44:49,772 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:44:49,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1934356929] [2022-03-19 13:44:49,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1934356929] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:44:49,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:44:49,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:44:49,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269212866] [2022-03-19 13:44:49,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:44:49,772 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 13:44:49,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:44:49,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 13:44:49,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 13:44:49,773 INFO L87 Difference]: Start difference. First operand 1091 states and 1686 transitions. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 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) [2022-03-19 13:44:51,781 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 [] [2022-03-19 13:44:52,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:44:52,176 INFO L93 Difference]: Finished difference Result 2542 states and 3875 transitions. [2022-03-19 13:44:52,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 13:44:52,177 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 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 193 [2022-03-19 13:44:52,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:44:52,180 INFO L225 Difference]: With dead ends: 2542 [2022-03-19 13:44:52,180 INFO L226 Difference]: Without dead ends: 1467 [2022-03-19 13:44:52,182 INFO L911 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 [2022-03-19 13:44:52,182 INFO L912 BasicCegarLoop]: 104 mSDtfsCounter, 110 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 43 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 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, 2.3s IncrementalHoareTripleChecker+Time [2022-03-19 13:44:52,183 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 296 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 379 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-03-19 13:44:52,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1467 states. [2022-03-19 13:44:52,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1467 to 1091. [2022-03-19 13:44:52,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 1086 states have (on average 1.5294659300184161) internal successors, (1661), 1086 states have internal predecessors, (1661), 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) [2022-03-19 13:44:52,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1665 transitions. [2022-03-19 13:44:52,226 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1665 transitions. Word has length 193 [2022-03-19 13:44:52,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:44:52,226 INFO L478 AbstractCegarLoop]: Abstraction has 1091 states and 1665 transitions. [2022-03-19 13:44:52,226 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 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) [2022-03-19 13:44:52,226 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1665 transitions. [2022-03-19 13:44:52,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-03-19 13:44:52,228 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:44:52,228 INFO L500 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 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] [2022-03-19 13:44:52,228 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-03-19 13:44:52,229 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:44:52,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:44:52,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1408894034, now seen corresponding path program 1 times [2022-03-19 13:44:52,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:44:52,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [514017203] [2022-03-19 13:45:13,496 WARN L232 SmtUtils]: Spent 15.78s on a formula simplification that was a NOOP. DAG size: 229 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-19 13:45:20,283 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:45:20,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1408894034, now seen corresponding path program 2 times [2022-03-19 13:45:20,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:45:20,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357077589] [2022-03-19 13:45:20,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:45:20,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:45:20,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:45:20,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:45:20,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:45:20,420 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 337 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-03-19 13:45:20,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:45:20,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357077589] [2022-03-19 13:45:20,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357077589] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:45:20,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:45:20,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:45:20,420 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:45:20,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [514017203] [2022-03-19 13:45:20,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [514017203] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:45:20,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:45:20,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:45:20,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264357333] [2022-03-19 13:45:20,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:45:20,421 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 13:45:20,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:45:20,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 13:45:20,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 13:45:20,422 INFO L87 Difference]: Start difference. First operand 1091 states and 1665 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 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) [2022-03-19 13:45:22,433 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 [] [2022-03-19 13:45:22,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:45:22,918 INFO L93 Difference]: Finished difference Result 2278 states and 3446 transitions. [2022-03-19 13:45:22,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 13:45:22,919 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 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 193 [2022-03-19 13:45:22,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:45:22,922 INFO L225 Difference]: With dead ends: 2278 [2022-03-19 13:45:22,922 INFO L226 Difference]: Without dead ends: 1372 [2022-03-19 13:45:22,924 INFO L911 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 [2022-03-19 13:45:22,924 INFO L912 BasicCegarLoop]: 224 mSDtfsCounter, 87 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-19 13:45:22,924 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 537 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 505 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-03-19 13:45:22,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1372 states. [2022-03-19 13:45:22,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1372 to 1091. [2022-03-19 13:45:22,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 1086 states have (on average 1.5248618784530388) internal successors, (1656), 1086 states have internal predecessors, (1656), 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) [2022-03-19 13:45:22,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1660 transitions. [2022-03-19 13:45:22,968 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1660 transitions. Word has length 193 [2022-03-19 13:45:22,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:45:22,968 INFO L478 AbstractCegarLoop]: Abstraction has 1091 states and 1660 transitions. [2022-03-19 13:45:22,969 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 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) [2022-03-19 13:45:22,969 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1660 transitions. [2022-03-19 13:45:22,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-03-19 13:45:22,971 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:45:22,971 INFO L500 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 8, 8, 8, 8, 7, 7, 6, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:45:22,971 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-03-19 13:45:22,971 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:45:22,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:45:22,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1223374947, now seen corresponding path program 1 times [2022-03-19 13:45:22,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:45:22,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1521192293] [2022-03-19 13:45:39,945 WARN L232 SmtUtils]: Spent 10.88s on a formula simplification that was a NOOP. DAG size: 229 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-19 13:45:48,763 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:45:48,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1223374947, now seen corresponding path program 2 times [2022-03-19 13:45:48,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:45:48,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362673535] [2022-03-19 13:45:48,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:45:48,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:45:48,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:45:48,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:45:48,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:45:48,916 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 310 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2022-03-19 13:45:48,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:45:48,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362673535] [2022-03-19 13:45:48,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362673535] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:45:48,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:45:48,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:45:48,916 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:45:48,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1521192293] [2022-03-19 13:45:48,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1521192293] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:45:48,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:45:48,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:45:48,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616061456] [2022-03-19 13:45:48,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:45:48,917 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 13:45:48,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:45:48,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 13:45:48,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 13:45:48,918 INFO L87 Difference]: Start difference. First operand 1091 states and 1660 transitions. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 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) [2022-03-19 13:45:50,925 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 [] [2022-03-19 13:45:51,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:45:51,406 INFO L93 Difference]: Finished difference Result 2447 states and 3693 transitions. [2022-03-19 13:45:51,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 13:45:51,407 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 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 193 [2022-03-19 13:45:51,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:45:51,410 INFO L225 Difference]: With dead ends: 2447 [2022-03-19 13:45:51,410 INFO L226 Difference]: Without dead ends: 1372 [2022-03-19 13:45:51,412 INFO L911 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 [2022-03-19 13:45:51,412 INFO L912 BasicCegarLoop]: 223 mSDtfsCounter, 90 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-19 13:45:51,412 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 535 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 504 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-03-19 13:45:51,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1372 states. [2022-03-19 13:45:51,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1372 to 1091. [2022-03-19 13:45:51,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 1086 states have (on average 1.5202578268876612) internal successors, (1651), 1086 states have internal predecessors, (1651), 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) [2022-03-19 13:45:51,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1655 transitions. [2022-03-19 13:45:51,457 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1655 transitions. Word has length 193 [2022-03-19 13:45:51,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:45:51,457 INFO L478 AbstractCegarLoop]: Abstraction has 1091 states and 1655 transitions. [2022-03-19 13:45:51,457 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 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) [2022-03-19 13:45:51,457 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1655 transitions. [2022-03-19 13:45:51,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-03-19 13:45:51,460 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:45:51,460 INFO L500 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 7, 7, 6, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:45:51,460 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-03-19 13:45:51,460 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:45:51,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:45:51,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1166019930, now seen corresponding path program 1 times [2022-03-19 13:45:51,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:45:51,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [884545137] [2022-03-19 13:46:06,574 WARN L232 SmtUtils]: Spent 14.51s on a formula simplification that was a NOOP. DAG size: 229 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-19 13:46:18,787 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:46:18,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1166019930, now seen corresponding path program 2 times [2022-03-19 13:46:18,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:46:18,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960850172] [2022-03-19 13:46:18,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:46:18,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:46:18,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:46:18,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:46:18,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:46:18,934 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 318 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2022-03-19 13:46:18,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:46:18,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960850172] [2022-03-19 13:46:18,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960850172] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:46:18,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:46:18,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:46:18,934 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:46:18,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [884545137] [2022-03-19 13:46:18,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [884545137] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:46:18,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:46:18,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:46:18,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561714388] [2022-03-19 13:46:18,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:46:18,935 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 13:46:18,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:46:18,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 13:46:18,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 13:46:18,936 INFO L87 Difference]: Start difference. First operand 1091 states and 1655 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 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) [2022-03-19 13:46:20,944 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 [] [2022-03-19 13:46:21,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:46:21,438 INFO L93 Difference]: Finished difference Result 2447 states and 3683 transitions. [2022-03-19 13:46:21,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 13:46:21,439 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 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 194 [2022-03-19 13:46:21,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:46:21,442 INFO L225 Difference]: With dead ends: 2447 [2022-03-19 13:46:21,442 INFO L226 Difference]: Without dead ends: 1372 [2022-03-19 13:46:21,444 INFO L911 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 [2022-03-19 13:46:21,444 INFO L912 BasicCegarLoop]: 222 mSDtfsCounter, 88 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-19 13:46:21,444 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 533 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 503 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-03-19 13:46:21,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1372 states. [2022-03-19 13:46:21,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1372 to 1091. [2022-03-19 13:46:21,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 1086 states have (on average 1.5156537753222836) internal successors, (1646), 1086 states have internal predecessors, (1646), 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) [2022-03-19 13:46:21,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1650 transitions. [2022-03-19 13:46:21,492 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1650 transitions. Word has length 194 [2022-03-19 13:46:21,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:46:21,492 INFO L478 AbstractCegarLoop]: Abstraction has 1091 states and 1650 transitions. [2022-03-19 13:46:21,492 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 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) [2022-03-19 13:46:21,492 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1650 transitions. [2022-03-19 13:46:21,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-03-19 13:46:21,494 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:46:21,494 INFO L500 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 8, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:46:21,494 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-03-19 13:46:21,494 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:46:21,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:46:21,495 INFO L85 PathProgramCache]: Analyzing trace with hash 164938377, now seen corresponding path program 1 times [2022-03-19 13:46:21,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:46:21,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [106571771] [2022-03-19 13:46:39,364 WARN L232 SmtUtils]: Spent 12.85s on a formula simplification that was a NOOP. DAG size: 229 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-19 13:46:47,803 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:46:47,803 INFO L85 PathProgramCache]: Analyzing trace with hash 164938377, now seen corresponding path program 2 times [2022-03-19 13:46:47,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:46:47,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66377179] [2022-03-19 13:46:47,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:46:47,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:46:47,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:46:47,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:46:47,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:46:47,957 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 344 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-03-19 13:46:47,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:46:47,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66377179] [2022-03-19 13:46:47,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66377179] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:46:47,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:46:47,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:46:47,958 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:46:47,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [106571771] [2022-03-19 13:46:47,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [106571771] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:46:47,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:46:47,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:46:47,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277081428] [2022-03-19 13:46:47,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:46:47,959 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 13:46:47,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:46:47,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 13:46:47,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 13:46:47,959 INFO L87 Difference]: Start difference. First operand 1091 states and 1650 transitions. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 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) [2022-03-19 13:46:49,975 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 [] [2022-03-19 13:46:50,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:46:50,521 INFO L93 Difference]: Finished difference Result 2524 states and 3784 transitions. [2022-03-19 13:46:50,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 13:46:50,521 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 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 194 [2022-03-19 13:46:50,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:46:50,525 INFO L225 Difference]: With dead ends: 2524 [2022-03-19 13:46:50,526 INFO L226 Difference]: Without dead ends: 1618 [2022-03-19 13:46:50,527 INFO L911 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 [2022-03-19 13:46:50,527 INFO L912 BasicCegarLoop]: 201 mSDtfsCounter, 112 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 33 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-03-19 13:46:50,527 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 484 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 491 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-03-19 13:46:50,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1618 states. [2022-03-19 13:46:50,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1618 to 1193. [2022-03-19 13:46:50,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1193 states, 1188 states have (on average 1.5092592592592593) internal successors, (1793), 1188 states have internal predecessors, (1793), 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) [2022-03-19 13:46:50,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1193 states to 1193 states and 1797 transitions. [2022-03-19 13:46:50,611 INFO L78 Accepts]: Start accepts. Automaton has 1193 states and 1797 transitions. Word has length 194 [2022-03-19 13:46:50,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:46:50,612 INFO L478 AbstractCegarLoop]: Abstraction has 1193 states and 1797 transitions. [2022-03-19 13:46:50,612 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 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) [2022-03-19 13:46:50,612 INFO L276 IsEmpty]: Start isEmpty. Operand 1193 states and 1797 transitions. [2022-03-19 13:46:50,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-03-19 13:46:50,614 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:46:50,614 INFO L500 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 8, 8, 7, 7, 6, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:46:50,615 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-03-19 13:46:50,615 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:46:50,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:46:50,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1168473336, now seen corresponding path program 1 times [2022-03-19 13:46:50,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:46:50,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [827426664] [2022-03-19 13:46:55,935 WARN L232 SmtUtils]: Spent 5.32s on a formula simplification. DAG size of input: 186 DAG size of output: 178 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-19 13:47:06,296 WARN L232 SmtUtils]: Spent 8.83s on a formula simplification that was a NOOP. DAG size: 229 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-19 13:47:13,823 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:47:13,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1168473336, now seen corresponding path program 2 times [2022-03-19 13:47:13,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:47:13,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932444101] [2022-03-19 13:47:13,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:47:13,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:47:13,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:47:13,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:47:13,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:47:13,991 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 326 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2022-03-19 13:47:13,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:47:13,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932444101] [2022-03-19 13:47:13,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932444101] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:47:13,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:47:13,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:47:13,991 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:47:13,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [827426664] [2022-03-19 13:47:13,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [827426664] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:47:13,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:47:13,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:47:13,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901824471] [2022-03-19 13:47:13,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:47:13,992 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 13:47:13,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:47:13,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 13:47:13,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 13:47:13,992 INFO L87 Difference]: Start difference. First operand 1193 states and 1797 transitions. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 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) [2022-03-19 13:47:16,001 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 [] [2022-03-19 13:47:16,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:47:16,528 INFO L93 Difference]: Finished difference Result 2637 states and 3952 transitions. [2022-03-19 13:47:16,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 13:47:16,528 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 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 195 [2022-03-19 13:47:16,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:47:16,532 INFO L225 Difference]: With dead ends: 2637 [2022-03-19 13:47:16,532 INFO L226 Difference]: Without dead ends: 1460 [2022-03-19 13:47:16,534 INFO L911 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 [2022-03-19 13:47:16,535 INFO L912 BasicCegarLoop]: 218 mSDtfsCounter, 83 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-19 13:47:16,535 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 525 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 492 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-03-19 13:47:16,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1460 states. [2022-03-19 13:47:16,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1460 to 1193. [2022-03-19 13:47:16,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1193 states, 1188 states have (on average 1.505050505050505) internal successors, (1788), 1188 states have internal predecessors, (1788), 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) [2022-03-19 13:47:16,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1193 states to 1193 states and 1792 transitions. [2022-03-19 13:47:16,611 INFO L78 Accepts]: Start accepts. Automaton has 1193 states and 1792 transitions. Word has length 195 [2022-03-19 13:47:16,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:47:16,612 INFO L478 AbstractCegarLoop]: Abstraction has 1193 states and 1792 transitions. [2022-03-19 13:47:16,612 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 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) [2022-03-19 13:47:16,612 INFO L276 IsEmpty]: Start isEmpty. Operand 1193 states and 1792 transitions. [2022-03-19 13:47:16,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-03-19 13:47:16,614 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:47:16,614 INFO L500 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 8, 7, 7, 6, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:47:16,614 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-03-19 13:47:16,614 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:47:16,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:47:16,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1079808289, now seen corresponding path program 1 times [2022-03-19 13:47:16,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:47:16,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1279196202] [2022-03-19 13:47:31,789 WARN L232 SmtUtils]: Spent 9.03s on a formula simplification that was a NOOP. DAG size: 229 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-19 13:47:39,918 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:47:39,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1079808289, now seen corresponding path program 2 times [2022-03-19 13:47:39,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:47:39,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977155764] [2022-03-19 13:47:39,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:47:39,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:47:40,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:47:40,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:47:40,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:47:40,085 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 334 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2022-03-19 13:47:40,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:47:40,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977155764] [2022-03-19 13:47:40,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977155764] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:47:40,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:47:40,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:47:40,086 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:47:40,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1279196202] [2022-03-19 13:47:40,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1279196202] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:47:40,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:47:40,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:47:40,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845767672] [2022-03-19 13:47:40,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:47:40,086 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 13:47:40,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:47:40,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 13:47:40,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 13:47:40,087 INFO L87 Difference]: Start difference. First operand 1193 states and 1792 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 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) [2022-03-19 13:47:42,099 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 [] [2022-03-19 13:47:42,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:47:42,583 INFO L93 Difference]: Finished difference Result 2592 states and 3887 transitions. [2022-03-19 13:47:42,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 13:47:42,584 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 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 196 [2022-03-19 13:47:42,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:47:42,587 INFO L225 Difference]: With dead ends: 2592 [2022-03-19 13:47:42,587 INFO L226 Difference]: Without dead ends: 1415 [2022-03-19 13:47:42,589 INFO L911 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 [2022-03-19 13:47:42,589 INFO L912 BasicCegarLoop]: 211 mSDtfsCounter, 74 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-19 13:47:42,589 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 511 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 469 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-03-19 13:47:42,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1415 states. [2022-03-19 13:47:42,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1415 to 1193. [2022-03-19 13:47:42,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1193 states, 1188 states have (on average 1.5008417508417509) internal successors, (1783), 1188 states have internal predecessors, (1783), 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) [2022-03-19 13:47:42,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1193 states to 1193 states and 1787 transitions. [2022-03-19 13:47:42,650 INFO L78 Accepts]: Start accepts. Automaton has 1193 states and 1787 transitions. Word has length 196 [2022-03-19 13:47:42,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:47:42,651 INFO L478 AbstractCegarLoop]: Abstraction has 1193 states and 1787 transitions. [2022-03-19 13:47:42,651 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 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) [2022-03-19 13:47:42,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1193 states and 1787 transitions. [2022-03-19 13:47:42,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-03-19 13:47:42,653 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:47:42,653 INFO L500 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:47:42,653 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-03-19 13:47:42,653 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:47:42,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:47:42,653 INFO L85 PathProgramCache]: Analyzing trace with hash -2125464036, now seen corresponding path program 1 times [2022-03-19 13:47:42,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:47:42,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1413376382] [2022-03-19 13:48:00,234 WARN L232 SmtUtils]: Spent 11.38s on a formula simplification that was a NOOP. DAG size: 229 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-19 13:48:09,451 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:48:09,451 INFO L85 PathProgramCache]: Analyzing trace with hash -2125464036, now seen corresponding path program 2 times [2022-03-19 13:48:09,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:48:09,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583550141] [2022-03-19 13:48:09,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:48:09,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:48:09,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:48:09,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:48:09,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:48:09,608 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 294 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-03-19 13:48:09,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:48:09,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583550141] [2022-03-19 13:48:09,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583550141] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:48:09,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:48:09,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:48:09,608 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:48:09,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1413376382] [2022-03-19 13:48:09,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1413376382] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:48:09,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:48:09,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:48:09,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413624872] [2022-03-19 13:48:09,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:48:09,609 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 13:48:09,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:48:09,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 13:48:09,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 13:48:09,609 INFO L87 Difference]: Start difference. First operand 1193 states and 1787 transitions. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 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) [2022-03-19 13:48:11,627 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 [] [2022-03-19 13:48:12,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:48:12,085 INFO L93 Difference]: Finished difference Result 2909 states and 4318 transitions. [2022-03-19 13:48:12,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 13:48:12,085 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 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 196 [2022-03-19 13:48:12,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:48:12,090 INFO L225 Difference]: With dead ends: 2909 [2022-03-19 13:48:12,090 INFO L226 Difference]: Without dead ends: 1732 [2022-03-19 13:48:12,091 INFO L911 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 [2022-03-19 13:48:12,092 INFO L912 BasicCegarLoop]: 99 mSDtfsCounter, 93 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 40 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-19 13:48:12,092 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 282 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 389 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-03-19 13:48:12,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1732 states. [2022-03-19 13:48:12,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1732 to 1421. [2022-03-19 13:48:12,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1421 states, 1416 states have (on average 1.5176553672316384) internal successors, (2149), 1416 states have internal predecessors, (2149), 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) [2022-03-19 13:48:12,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1421 states to 1421 states and 2153 transitions. [2022-03-19 13:48:12,189 INFO L78 Accepts]: Start accepts. Automaton has 1421 states and 2153 transitions. Word has length 196 [2022-03-19 13:48:12,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:48:12,189 INFO L478 AbstractCegarLoop]: Abstraction has 1421 states and 2153 transitions. [2022-03-19 13:48:12,189 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 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) [2022-03-19 13:48:12,189 INFO L276 IsEmpty]: Start isEmpty. Operand 1421 states and 2153 transitions. [2022-03-19 13:48:12,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-03-19 13:48:12,192 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:48:12,192 INFO L500 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:48:12,192 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-03-19 13:48:12,192 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:48:12,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:48:12,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1893395013, now seen corresponding path program 1 times [2022-03-19 13:48:12,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:48:12,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1160605064] [2022-03-19 13:48:33,054 WARN L232 SmtUtils]: Spent 14.96s on a formula simplification that was a NOOP. DAG size: 229 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-19 13:48:42,731 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:48:42,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1893395013, now seen corresponding path program 2 times [2022-03-19 13:48:42,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:48:42,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368049936] [2022-03-19 13:48:42,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:48:42,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:48:42,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:48:42,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:48:42,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:48:42,872 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 294 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-03-19 13:48:42,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:48:42,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368049936] [2022-03-19 13:48:42,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368049936] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:48:42,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:48:42,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:48:42,873 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:48:42,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1160605064] [2022-03-19 13:48:42,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1160605064] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:48:42,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:48:42,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:48:42,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160446119] [2022-03-19 13:48:42,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:48:42,874 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 13:48:42,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:48:42,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 13:48:42,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 13:48:42,874 INFO L87 Difference]: Start difference. First operand 1421 states and 2153 transitions. Second operand has 5 states, 5 states have (on average 25.0) internal successors, (125), 4 states have internal predecessors, (125), 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) [2022-03-19 13:48:44,883 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 [] [2022-03-19 13:48:45,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:48:45,270 INFO L93 Difference]: Finished difference Result 2858 states and 4319 transitions. [2022-03-19 13:48:45,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 13:48:45,271 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 4 states have internal predecessors, (125), 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 197 [2022-03-19 13:48:45,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:48:45,275 INFO L225 Difference]: With dead ends: 2858 [2022-03-19 13:48:45,275 INFO L226 Difference]: Without dead ends: 1453 [2022-03-19 13:48:45,278 INFO L911 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 [2022-03-19 13:48:45,278 INFO L912 BasicCegarLoop]: 185 mSDtfsCounter, 19 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-03-19 13:48:45,278 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 460 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 332 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-03-19 13:48:45,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2022-03-19 13:48:45,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 1421. [2022-03-19 13:48:45,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1421 states, 1416 states have (on average 1.5141242937853108) internal successors, (2144), 1416 states have internal predecessors, (2144), 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) [2022-03-19 13:48:45,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1421 states to 1421 states and 2148 transitions. [2022-03-19 13:48:45,369 INFO L78 Accepts]: Start accepts. Automaton has 1421 states and 2148 transitions. Word has length 197 [2022-03-19 13:48:45,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:48:45,369 INFO L478 AbstractCegarLoop]: Abstraction has 1421 states and 2148 transitions. [2022-03-19 13:48:45,369 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 4 states have internal predecessors, (125), 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) [2022-03-19 13:48:45,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1421 states and 2148 transitions. [2022-03-19 13:48:45,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-03-19 13:48:45,372 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:48:45,372 INFO L500 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 7, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:48:45,372 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-03-19 13:48:45,372 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:48:45,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:48:45,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1803608870, now seen corresponding path program 1 times [2022-03-19 13:48:45,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:48:45,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1827579793] [2022-03-19 13:48:58,978 WARN L232 SmtUtils]: Spent 9.15s on a formula simplification that was a NOOP. DAG size: 229 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-19 13:49:06,189 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:49:06,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1803608870, now seen corresponding path program 2 times [2022-03-19 13:49:06,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:49:06,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558806297] [2022-03-19 13:49:06,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:49:06,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:49:06,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:49:06,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:49:06,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:49:06,342 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 353 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-03-19 13:49:06,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:49:06,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558806297] [2022-03-19 13:49:06,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558806297] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:49:06,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:49:06,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:49:06,343 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:49:06,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1827579793] [2022-03-19 13:49:06,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1827579793] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:49:06,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:49:06,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:49:06,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129086872] [2022-03-19 13:49:06,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:49:06,343 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 13:49:06,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:49:06,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 13:49:06,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 13:49:06,344 INFO L87 Difference]: Start difference. First operand 1421 states and 2148 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 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) [2022-03-19 13:49:08,354 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 [] [2022-03-19 13:49:09,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:49:09,047 INFO L93 Difference]: Finished difference Result 3286 states and 4942 transitions. [2022-03-19 13:49:09,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 13:49:09,049 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 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 201 [2022-03-19 13:49:09,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:49:09,056 INFO L225 Difference]: With dead ends: 3286 [2022-03-19 13:49:09,056 INFO L226 Difference]: Without dead ends: 1881 [2022-03-19 13:49:09,059 INFO L911 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 [2022-03-19 13:49:09,060 INFO L912 BasicCegarLoop]: 224 mSDtfsCounter, 78 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-03-19 13:49:09,060 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 538 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 503 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-03-19 13:49:09,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1881 states. [2022-03-19 13:49:09,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1881 to 1535. [2022-03-19 13:49:09,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1535 states, 1530 states have (on average 1.515032679738562) internal successors, (2318), 1530 states have internal predecessors, (2318), 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) [2022-03-19 13:49:09,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1535 states to 1535 states and 2322 transitions. [2022-03-19 13:49:09,189 INFO L78 Accepts]: Start accepts. Automaton has 1535 states and 2322 transitions. Word has length 201 [2022-03-19 13:49:09,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:49:09,189 INFO L478 AbstractCegarLoop]: Abstraction has 1535 states and 2322 transitions. [2022-03-19 13:49:09,190 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 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) [2022-03-19 13:49:09,190 INFO L276 IsEmpty]: Start isEmpty. Operand 1535 states and 2322 transitions. [2022-03-19 13:49:09,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-03-19 13:49:09,192 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:49:09,192 INFO L500 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:49:09,192 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-03-19 13:49:09,192 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:49:09,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:49:09,193 INFO L85 PathProgramCache]: Analyzing trace with hash 255429711, now seen corresponding path program 1 times [2022-03-19 13:49:09,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:49:09,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [324554778] [2022-03-19 13:49:31,221 WARN L232 SmtUtils]: Spent 16.04s on a formula simplification that was a NOOP. DAG size: 229 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-19 13:49:39,020 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:49:39,020 INFO L85 PathProgramCache]: Analyzing trace with hash 255429711, now seen corresponding path program 2 times [2022-03-19 13:49:39,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:49:39,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006509714] [2022-03-19 13:49:39,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:49:39,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:49:39,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:49:39,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:49:39,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:49:39,214 INFO L134 CoverageAnalysis]: Checked inductivity of 645 backedges. 414 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2022-03-19 13:49:39,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:49:39,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006509714] [2022-03-19 13:49:39,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006509714] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:49:39,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:49:39,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:49:39,215 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:49:39,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [324554778] [2022-03-19 13:49:39,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [324554778] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:49:39,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:49:39,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:49:39,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338258742] [2022-03-19 13:49:39,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:49:39,216 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 13:49:39,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:49:39,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 13:49:39,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 13:49:39,216 INFO L87 Difference]: Start difference. First operand 1535 states and 2322 transitions. Second operand has 5 states, 5 states have (on average 23.0) internal successors, (115), 4 states have internal predecessors, (115), 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) [2022-03-19 13:49:41,238 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 [] [2022-03-19 13:49:41,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:49:41,912 INFO L93 Difference]: Finished difference Result 3285 states and 4956 transitions. [2022-03-19 13:49:41,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 13:49:41,912 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 4 states have internal predecessors, (115), 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 215 [2022-03-19 13:49:41,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:49:41,918 INFO L225 Difference]: With dead ends: 3285 [2022-03-19 13:49:41,918 INFO L226 Difference]: Without dead ends: 2009 [2022-03-19 13:49:41,920 INFO L911 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 [2022-03-19 13:49:41,920 INFO L912 BasicCegarLoop]: 198 mSDtfsCounter, 111 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 31 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-03-19 13:49:41,921 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 478 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 482 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-03-19 13:49:41,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2009 states. [2022-03-19 13:49:42,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2009 to 1535. [2022-03-19 13:49:42,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1535 states, 1530 states have (on average 1.4967320261437909) internal successors, (2290), 1530 states have internal predecessors, (2290), 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) [2022-03-19 13:49:42,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1535 states to 1535 states and 2294 transitions. [2022-03-19 13:49:42,029 INFO L78 Accepts]: Start accepts. Automaton has 1535 states and 2294 transitions. Word has length 215 [2022-03-19 13:49:42,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:49:42,029 INFO L478 AbstractCegarLoop]: Abstraction has 1535 states and 2294 transitions. [2022-03-19 13:49:42,029 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 4 states have internal predecessors, (115), 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) [2022-03-19 13:49:42,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1535 states and 2294 transitions. [2022-03-19 13:49:42,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-03-19 13:49:42,031 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:49:42,031 INFO L500 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 9, 9, 9, 9, 8, 8, 7, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:49:42,032 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-03-19 13:49:42,032 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:49:42,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:49:42,032 INFO L85 PathProgramCache]: Analyzing trace with hash 69910624, now seen corresponding path program 1 times [2022-03-19 13:49:42,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:49:42,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [685166529] [2022-03-19 13:49:57,673 WARN L232 SmtUtils]: Spent 10.05s on a formula simplification that was a NOOP. DAG size: 229 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-19 13:50:04,897 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:50:04,897 INFO L85 PathProgramCache]: Analyzing trace with hash 69910624, now seen corresponding path program 2 times [2022-03-19 13:50:04,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:50:04,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926357002] [2022-03-19 13:50:04,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:50:04,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:50:05,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:50:05,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:50:05,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:50:05,068 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 384 proven. 0 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2022-03-19 13:50:05,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:50:05,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926357002] [2022-03-19 13:50:05,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926357002] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:50:05,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:50:05,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:50:05,069 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:50:05,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [685166529] [2022-03-19 13:50:05,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [685166529] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:50:05,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:50:05,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:50:05,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607672286] [2022-03-19 13:50:05,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:50:05,069 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 13:50:05,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:50:05,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 13:50:05,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 13:50:05,070 INFO L87 Difference]: Start difference. First operand 1535 states and 2294 transitions. Second operand has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 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) [2022-03-19 13:50:07,080 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 [] [2022-03-19 13:50:07,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:50:07,658 INFO L93 Difference]: Finished difference Result 3383 states and 5036 transitions. [2022-03-19 13:50:07,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 13:50:07,659 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 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 215 [2022-03-19 13:50:07,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:50:07,662 INFO L225 Difference]: With dead ends: 3383 [2022-03-19 13:50:07,662 INFO L226 Difference]: Without dead ends: 1864 [2022-03-19 13:50:07,664 INFO L911 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 [2022-03-19 13:50:07,664 INFO L912 BasicCegarLoop]: 220 mSDtfsCounter, 81 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-19 13:50:07,665 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 530 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 492 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-03-19 13:50:07,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1864 states. [2022-03-19 13:50:07,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1864 to 1535. [2022-03-19 13:50:07,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1535 states, 1530 states have (on average 1.49281045751634) internal successors, (2284), 1530 states have internal predecessors, (2284), 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) [2022-03-19 13:50:07,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1535 states to 1535 states and 2288 transitions. [2022-03-19 13:50:07,774 INFO L78 Accepts]: Start accepts. Automaton has 1535 states and 2288 transitions. Word has length 215 [2022-03-19 13:50:07,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:50:07,774 INFO L478 AbstractCegarLoop]: Abstraction has 1535 states and 2288 transitions. [2022-03-19 13:50:07,774 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 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) [2022-03-19 13:50:07,774 INFO L276 IsEmpty]: Start isEmpty. Operand 1535 states and 2288 transitions. [2022-03-19 13:50:07,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-03-19 13:50:07,777 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:50:07,777 INFO L500 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 8, 8, 7, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:50:07,777 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-03-19 13:50:07,777 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:50:07,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:50:07,777 INFO L85 PathProgramCache]: Analyzing trace with hash -231635715, now seen corresponding path program 1 times [2022-03-19 13:50:07,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:50:07,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1723727958] [2022-03-19 13:50:15,984 WARN L232 SmtUtils]: Spent 7.29s on a formula simplification that was a NOOP. DAG size: 229 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-19 13:50:27,194 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:50:27,194 INFO L85 PathProgramCache]: Analyzing trace with hash -231635715, now seen corresponding path program 2 times [2022-03-19 13:50:27,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:50:27,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534052484] [2022-03-19 13:50:27,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:50:27,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:50:27,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:50:27,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:50:27,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:50:27,349 INFO L134 CoverageAnalysis]: Checked inductivity of 627 backedges. 393 proven. 0 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2022-03-19 13:50:27,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:50:27,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534052484] [2022-03-19 13:50:27,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534052484] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:50:27,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:50:27,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:50:27,349 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:50:27,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1723727958] [2022-03-19 13:50:27,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1723727958] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:50:27,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:50:27,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:50:27,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311779622] [2022-03-19 13:50:27,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:50:27,350 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 13:50:27,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:50:27,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 13:50:27,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 13:50:27,350 INFO L87 Difference]: Start difference. First operand 1535 states and 2288 transitions. Second operand has 5 states, 5 states have (on average 23.0) internal successors, (115), 4 states have internal predecessors, (115), 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) [2022-03-19 13:50:29,368 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:50:29,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:50:29,930 INFO L93 Difference]: Finished difference Result 3383 states and 5024 transitions. [2022-03-19 13:50:29,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 13:50:29,930 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 4 states have internal predecessors, (115), 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 216 [2022-03-19 13:50:29,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:50:29,933 INFO L225 Difference]: With dead ends: 3383 [2022-03-19 13:50:29,933 INFO L226 Difference]: Without dead ends: 1864 [2022-03-19 13:50:29,935 INFO L911 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 [2022-03-19 13:50:29,936 INFO L912 BasicCegarLoop]: 219 mSDtfsCounter, 79 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-19 13:50:29,936 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 528 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 491 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-03-19 13:50:29,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1864 states. [2022-03-19 13:50:30,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1864 to 1535. [2022-03-19 13:50:30,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1535 states, 1530 states have (on average 1.488888888888889) internal successors, (2278), 1530 states have internal predecessors, (2278), 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) [2022-03-19 13:50:30,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1535 states to 1535 states and 2282 transitions. [2022-03-19 13:50:30,050 INFO L78 Accepts]: Start accepts. Automaton has 1535 states and 2282 transitions. Word has length 216 [2022-03-19 13:50:30,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:50:30,050 INFO L478 AbstractCegarLoop]: Abstraction has 1535 states and 2282 transitions. [2022-03-19 13:50:30,050 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 4 states have internal predecessors, (115), 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) [2022-03-19 13:50:30,050 INFO L276 IsEmpty]: Start isEmpty. Operand 1535 states and 2282 transitions. [2022-03-19 13:50:30,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2022-03-19 13:50:30,052 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:50:30,053 INFO L500 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 9, 9, 8, 8, 7, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:50:30,053 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-03-19 13:50:30,053 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:50:30,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:50:30,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1546125371, now seen corresponding path program 1 times [2022-03-19 13:50:30,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:50:30,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1173770811] [2022-03-19 13:50:48,804 WARN L232 SmtUtils]: Spent 13.13s on a formula simplification that was a NOOP. DAG size: 229 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-19 13:50:56,155 WARN L232 SmtUtils]: Spent 5.19s on a formula simplification that was a NOOP. DAG size: 154 (called from [L 269] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-19 13:50:58,192 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:50:58,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1546125371, now seen corresponding path program 2 times [2022-03-19 13:50:58,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:50:58,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887476827] [2022-03-19 13:50:58,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:50:58,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:50:58,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:50:58,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:50:58,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:50:58,360 INFO L134 CoverageAnalysis]: Checked inductivity of 636 backedges. 402 proven. 0 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2022-03-19 13:50:58,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:50:58,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887476827] [2022-03-19 13:50:58,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887476827] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:50:58,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:50:58,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:50:58,360 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:50:58,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1173770811] [2022-03-19 13:50:58,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1173770811] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:50:58,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:50:58,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:50:58,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903481369] [2022-03-19 13:50:58,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:50:58,361 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 13:50:58,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:50:58,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 13:50:58,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 13:50:58,362 INFO L87 Difference]: Start difference. First operand 1535 states and 2282 transitions. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 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) [2022-03-19 13:51:00,370 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 [] [2022-03-19 13:51:00,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:51:00,868 INFO L93 Difference]: Finished difference Result 3431 states and 5068 transitions. [2022-03-19 13:51:00,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 13:51:00,869 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 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 217 [2022-03-19 13:51:00,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:51:00,871 INFO L225 Difference]: With dead ends: 3431 [2022-03-19 13:51:00,871 INFO L226 Difference]: Without dead ends: 1912 [2022-03-19 13:51:00,873 INFO L911 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 [2022-03-19 13:51:00,873 INFO L912 BasicCegarLoop]: 97 mSDtfsCounter, 116 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 46 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 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 [2022-03-19 13:51:00,873 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 278 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 382 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-03-19 13:51:00,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1912 states. [2022-03-19 13:51:00,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1912 to 1535. [2022-03-19 13:51:00,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1535 states, 1530 states have (on average 1.4666666666666666) internal successors, (2244), 1530 states have internal predecessors, (2244), 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) [2022-03-19 13:51:00,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1535 states to 1535 states and 2248 transitions. [2022-03-19 13:51:00,988 INFO L78 Accepts]: Start accepts. Automaton has 1535 states and 2248 transitions. Word has length 217 [2022-03-19 13:51:00,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:51:00,989 INFO L478 AbstractCegarLoop]: Abstraction has 1535 states and 2248 transitions. [2022-03-19 13:51:00,989 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 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) [2022-03-19 13:51:00,989 INFO L276 IsEmpty]: Start isEmpty. Operand 1535 states and 2248 transitions. [2022-03-19 13:51:00,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-03-19 13:51:00,991 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:51:00,991 INFO L500 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 9, 8, 8, 7, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:51:00,991 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-03-19 13:51:00,991 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:51:00,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:51:00,991 INFO L85 PathProgramCache]: Analyzing trace with hash 97880514, now seen corresponding path program 1 times [2022-03-19 13:51:00,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:51:00,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2051130251] [2022-03-19 13:51:15,597 WARN L232 SmtUtils]: Spent 9.77s on a formula simplification that was a NOOP. DAG size: 229 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-19 13:51:23,796 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:51:23,797 INFO L85 PathProgramCache]: Analyzing trace with hash 97880514, now seen corresponding path program 2 times [2022-03-19 13:51:23,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:51:23,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606022155] [2022-03-19 13:51:23,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:51:23,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:51:23,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:51:23,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:51:23,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:51:23,972 INFO L134 CoverageAnalysis]: Checked inductivity of 645 backedges. 411 proven. 0 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2022-03-19 13:51:23,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:51:23,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606022155] [2022-03-19 13:51:23,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606022155] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:51:23,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:51:23,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:51:23,973 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:51:23,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2051130251] [2022-03-19 13:51:23,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2051130251] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:51:23,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:51:23,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:51:23,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736369797] [2022-03-19 13:51:23,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:51:23,973 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 13:51:23,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:51:23,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 13:51:23,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 13:51:23,974 INFO L87 Difference]: Start difference. First operand 1535 states and 2248 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 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) [2022-03-19 13:51:25,981 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 [] [2022-03-19 13:51:26,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:51:26,503 INFO L93 Difference]: Finished difference Result 3431 states and 5000 transitions. [2022-03-19 13:51:26,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 13:51:26,503 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 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 218 [2022-03-19 13:51:26,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:51:26,506 INFO L225 Difference]: With dead ends: 3431 [2022-03-19 13:51:26,506 INFO L226 Difference]: Without dead ends: 1912 [2022-03-19 13:51:26,508 INFO L911 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 [2022-03-19 13:51:26,508 INFO L912 BasicCegarLoop]: 98 mSDtfsCounter, 114 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 46 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-03-19 13:51:26,509 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 280 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 383 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-03-19 13:51:26,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1912 states. [2022-03-19 13:51:26,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1912 to 1535. [2022-03-19 13:51:26,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1535 states, 1530 states have (on average 1.4444444444444444) internal successors, (2210), 1530 states have internal predecessors, (2210), 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) [2022-03-19 13:51:26,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1535 states to 1535 states and 2214 transitions. [2022-03-19 13:51:26,631 INFO L78 Accepts]: Start accepts. Automaton has 1535 states and 2214 transitions. Word has length 218 [2022-03-19 13:51:26,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:51:26,632 INFO L478 AbstractCegarLoop]: Abstraction has 1535 states and 2214 transitions. [2022-03-19 13:51:26,632 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 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) [2022-03-19 13:51:26,632 INFO L276 IsEmpty]: Start isEmpty. Operand 1535 states and 2214 transitions. [2022-03-19 13:51:26,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2022-03-19 13:51:26,634 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:51:26,634 INFO L500 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:51:26,634 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-03-19 13:51:26,634 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:51:26,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:51:26,635 INFO L85 PathProgramCache]: Analyzing trace with hash -252957758, now seen corresponding path program 1 times [2022-03-19 13:51:26,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:51:26,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [40250558] [2022-03-19 13:51:41,498 WARN L232 SmtUtils]: Spent 7.85s on a formula simplification that was a NOOP. DAG size: 229 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-19 13:51:50,575 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:51:50,575 INFO L85 PathProgramCache]: Analyzing trace with hash -252957758, now seen corresponding path program 2 times [2022-03-19 13:51:50,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:51:50,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951201460] [2022-03-19 13:51:50,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:51:50,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:51:50,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:51:50,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:51:50,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:51:50,727 INFO L134 CoverageAnalysis]: Checked inductivity of 558 backedges. 366 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-03-19 13:51:50,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:51:50,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951201460] [2022-03-19 13:51:50,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951201460] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:51:50,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:51:50,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:51:50,728 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:51:50,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [40250558] [2022-03-19 13:51:50,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [40250558] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:51:50,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:51:50,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:51:50,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076893881] [2022-03-19 13:51:50,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:51:50,728 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 13:51:50,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:51:50,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 13:51:50,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 13:51:50,729 INFO L87 Difference]: Start difference. First operand 1535 states and 2214 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 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) [2022-03-19 13:51:52,736 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 [] [2022-03-19 13:51:53,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:51:53,153 INFO L93 Difference]: Finished difference Result 3131 states and 4510 transitions. [2022-03-19 13:51:53,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 13:51:53,153 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 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 219 [2022-03-19 13:51:53,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:51:53,155 INFO L225 Difference]: With dead ends: 3131 [2022-03-19 13:51:53,155 INFO L226 Difference]: Without dead ends: 1612 [2022-03-19 13:51:53,157 INFO L911 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 [2022-03-19 13:51:53,157 INFO L912 BasicCegarLoop]: 188 mSDtfsCounter, 17 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-03-19 13:51:53,157 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 466 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 351 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-03-19 13:51:53,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1612 states. [2022-03-19 13:51:53,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1612 to 1577. [2022-03-19 13:51:53,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1577 states, 1572 states have (on average 1.440203562340967) internal successors, (2264), 1572 states have internal predecessors, (2264), 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) [2022-03-19 13:51:53,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 2268 transitions. [2022-03-19 13:51:53,280 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 2268 transitions. Word has length 219 [2022-03-19 13:51:53,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:51:53,280 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 2268 transitions. [2022-03-19 13:51:53,280 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 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) [2022-03-19 13:51:53,280 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 2268 transitions. [2022-03-19 13:51:53,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-03-19 13:51:53,282 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:51:53,282 INFO L500 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 8, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:51:53,282 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-03-19 13:51:53,283 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:51:53,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:51:53,283 INFO L85 PathProgramCache]: Analyzing trace with hash 944424234, now seen corresponding path program 1 times [2022-03-19 13:51:53,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:51:53,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [51621033] [2022-03-19 13:52:05,728 WARN L232 SmtUtils]: Spent 7.16s on a formula simplification that was a NOOP. DAG size: 229 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-19 13:52:13,042 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:52:13,042 INFO L85 PathProgramCache]: Analyzing trace with hash 944424234, now seen corresponding path program 2 times [2022-03-19 13:52:13,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:52:13,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85100882] [2022-03-19 13:52:13,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:52:13,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:52:13,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:52:13,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:52:13,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:52:13,207 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 418 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2022-03-19 13:52:13,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:52:13,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85100882] [2022-03-19 13:52:13,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85100882] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:52:13,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:52:13,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:52:13,208 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:52:13,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [51621033] [2022-03-19 13:52:13,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [51621033] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:52:13,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:52:13,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:52:13,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004186814] [2022-03-19 13:52:13,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:52:13,209 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 13:52:13,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:52:13,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 13:52:13,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 13:52:13,209 INFO L87 Difference]: Start difference. First operand 1577 states and 2268 transitions. Second operand has 5 states, 5 states have (on average 24.0) internal successors, (120), 4 states have internal predecessors, (120), 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) [2022-03-19 13:52:15,218 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 [] [2022-03-19 13:52:15,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:52:15,833 INFO L93 Difference]: Finished difference Result 3587 states and 5152 transitions. [2022-03-19 13:52:15,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 13:52:15,834 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 4 states have internal predecessors, (120), 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 226 [2022-03-19 13:52:15,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:52:15,836 INFO L225 Difference]: With dead ends: 3587 [2022-03-19 13:52:15,836 INFO L226 Difference]: Without dead ends: 2026 [2022-03-19 13:52:15,838 INFO L911 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 [2022-03-19 13:52:15,838 INFO L912 BasicCegarLoop]: 218 mSDtfsCounter, 73 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-19 13:52:15,839 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 526 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 490 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-03-19 13:52:15,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2026 states. [2022-03-19 13:52:15,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2026 to 1697. [2022-03-19 13:52:15,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1697 states, 1692 states have (on average 1.433806146572104) internal successors, (2426), 1692 states have internal predecessors, (2426), 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) [2022-03-19 13:52:15,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1697 states to 1697 states and 2430 transitions. [2022-03-19 13:52:15,986 INFO L78 Accepts]: Start accepts. Automaton has 1697 states and 2430 transitions. Word has length 226 [2022-03-19 13:52:15,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:52:15,987 INFO L478 AbstractCegarLoop]: Abstraction has 1697 states and 2430 transitions. [2022-03-19 13:52:15,987 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 4 states have internal predecessors, (120), 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) [2022-03-19 13:52:15,987 INFO L276 IsEmpty]: Start isEmpty. Operand 1697 states and 2430 transitions. [2022-03-19 13:52:15,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-03-19 13:52:15,989 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:52:15,989 INFO L500 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 8, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:52:15,989 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-03-19 13:52:15,989 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:52:15,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:52:15,989 INFO L85 PathProgramCache]: Analyzing trace with hash -932058584, now seen corresponding path program 1 times [2022-03-19 13:52:15,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:52:15,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1674438709] [2022-03-19 13:52:28,406 WARN L232 SmtUtils]: Spent 7.89s on a formula simplification that was a NOOP. DAG size: 229 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-19 13:52:35,583 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:52:35,583 INFO L85 PathProgramCache]: Analyzing trace with hash -932058584, now seen corresponding path program 2 times [2022-03-19 13:52:35,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:52:35,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119300461] [2022-03-19 13:52:35,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:52:35,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:52:35,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:52:35,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:52:35,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:52:35,773 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 418 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2022-03-19 13:52:35,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:52:35,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119300461] [2022-03-19 13:52:35,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119300461] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:52:35,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:52:35,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:52:35,773 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:52:35,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1674438709] [2022-03-19 13:52:35,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1674438709] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:52:35,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:52:35,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:52:35,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574472584] [2022-03-19 13:52:35,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:52:35,774 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 13:52:35,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:52:35,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 13:52:35,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 13:52:35,775 INFO L87 Difference]: Start difference. First operand 1697 states and 2430 transitions. Second operand has 5 states, 5 states have (on average 24.0) internal successors, (120), 4 states have internal predecessors, (120), 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) [2022-03-19 13:52:37,784 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 [] [2022-03-19 13:52:38,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:52:38,377 INFO L93 Difference]: Finished difference Result 3821 states and 5470 transitions. [2022-03-19 13:52:38,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 13:52:38,377 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 4 states have internal predecessors, (120), 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 226 [2022-03-19 13:52:38,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:52:38,380 INFO L225 Difference]: With dead ends: 3821 [2022-03-19 13:52:38,380 INFO L226 Difference]: Without dead ends: 2140 [2022-03-19 13:52:38,383 INFO L911 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 [2022-03-19 13:52:38,384 INFO L912 BasicCegarLoop]: 219 mSDtfsCounter, 73 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-19 13:52:38,384 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 528 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 493 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-03-19 13:52:38,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2140 states. [2022-03-19 13:52:38,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2140 to 1691. [2022-03-19 13:52:38,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1691 states, 1686 states have (on average 1.435349940688019) internal successors, (2420), 1686 states have internal predecessors, (2420), 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) [2022-03-19 13:52:38,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1691 states to 1691 states and 2424 transitions. [2022-03-19 13:52:38,530 INFO L78 Accepts]: Start accepts. Automaton has 1691 states and 2424 transitions. Word has length 226 [2022-03-19 13:52:38,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:52:38,530 INFO L478 AbstractCegarLoop]: Abstraction has 1691 states and 2424 transitions. [2022-03-19 13:52:38,530 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 4 states have internal predecessors, (120), 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) [2022-03-19 13:52:38,530 INFO L276 IsEmpty]: Start isEmpty. Operand 1691 states and 2424 transitions. [2022-03-19 13:52:38,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-03-19 13:52:38,532 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:52:38,533 INFO L500 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 10, 10, 10, 10, 9, 9, 8, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:52:38,533 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-03-19 13:52:38,533 INFO L403 AbstractCegarLoop]: === Iteration 31 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:52:38,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:52:38,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1157522256, now seen corresponding path program 1 times [2022-03-19 13:52:38,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:52:38,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [861683585] [2022-03-19 13:52:54,504 WARN L232 SmtUtils]: Spent 9.83s on a formula simplification that was a NOOP. DAG size: 229 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-19 13:53:03,012 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:53:03,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1157522256, now seen corresponding path program 2 times [2022-03-19 13:53:03,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:53:03,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340732959] [2022-03-19 13:53:03,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:53:03,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:53:03,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:53:03,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:53:03,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:53:03,188 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 456 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-03-19 13:53:03,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:53:03,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340732959] [2022-03-19 13:53:03,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340732959] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:53:03,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:53:03,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:53:03,189 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:53:03,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [861683585] [2022-03-19 13:53:03,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [861683585] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:53:03,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:53:03,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:53:03,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805525679] [2022-03-19 13:53:03,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:53:03,189 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 13:53:03,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:53:03,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 13:53:03,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 13:53:03,190 INFO L87 Difference]: Start difference. First operand 1691 states and 2424 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 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) [2022-03-19 13:53:05,198 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 [] [2022-03-19 13:53:05,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:53:05,827 INFO L93 Difference]: Finished difference Result 3815 states and 5458 transitions. [2022-03-19 13:53:05,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 13:53:05,828 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 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 240 [2022-03-19 13:53:05,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:53:05,831 INFO L225 Difference]: With dead ends: 3815 [2022-03-19 13:53:05,831 INFO L226 Difference]: Without dead ends: 2140 [2022-03-19 13:53:05,832 INFO L911 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 [2022-03-19 13:53:05,833 INFO L912 BasicCegarLoop]: 217 mSDtfsCounter, 79 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-19 13:53:05,833 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 524 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 489 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-03-19 13:53:05,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2140 states. [2022-03-19 13:53:05,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2140 to 1769. [2022-03-19 13:53:05,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1769 states, 1764 states have (on average 1.433106575963719) internal successors, (2528), 1764 states have internal predecessors, (2528), 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) [2022-03-19 13:53:05,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1769 states to 1769 states and 2532 transitions. [2022-03-19 13:53:05,985 INFO L78 Accepts]: Start accepts. Automaton has 1769 states and 2532 transitions. Word has length 240 [2022-03-19 13:53:05,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:53:05,985 INFO L478 AbstractCegarLoop]: Abstraction has 1769 states and 2532 transitions. [2022-03-19 13:53:05,985 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 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) [2022-03-19 13:53:05,985 INFO L276 IsEmpty]: Start isEmpty. Operand 1769 states and 2532 transitions. [2022-03-19 13:53:05,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-03-19 13:53:05,987 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:53:05,987 INFO L500 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 10, 10, 10, 10, 9, 9, 8, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:53:05,987 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-03-19 13:53:05,987 INFO L403 AbstractCegarLoop]: === Iteration 32 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:53:05,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:53:05,988 INFO L85 PathProgramCache]: Analyzing trace with hash 2106404142, now seen corresponding path program 1 times [2022-03-19 13:53:05,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:53:05,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [605230697] [2022-03-19 13:53:31,185 WARN L232 SmtUtils]: Spent 19.91s on a formula simplification that was a NOOP. DAG size: 229 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-19 13:53:40,331 WARN L232 SmtUtils]: Spent 5.62s on a formula simplification that was a NOOP. DAG size: 154 (called from [L 269] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-19 13:53:42,843 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:53:42,844 INFO L85 PathProgramCache]: Analyzing trace with hash 2106404142, now seen corresponding path program 2 times [2022-03-19 13:53:42,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:53:42,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816616537] [2022-03-19 13:53:42,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:53:42,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:53:42,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:53:43,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:53:43,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:53:43,018 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 456 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-03-19 13:53:43,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:53:43,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816616537] [2022-03-19 13:53:43,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816616537] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:53:43,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:53:43,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:53:43,019 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:53:43,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [605230697] [2022-03-19 13:53:43,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [605230697] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:53:43,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:53:43,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:53:43,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973348971] [2022-03-19 13:53:43,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:53:43,020 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 13:53:43,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:53:43,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 13:53:43,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 13:53:43,020 INFO L87 Difference]: Start difference. First operand 1769 states and 2532 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 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) [2022-03-19 13:53:45,030 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 [] [2022-03-19 13:53:45,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:53:45,749 INFO L93 Difference]: Finished difference Result 3893 states and 5560 transitions. [2022-03-19 13:53:45,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 13:53:45,749 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 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 240 [2022-03-19 13:53:45,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:53:45,752 INFO L225 Difference]: With dead ends: 3893 [2022-03-19 13:53:45,752 INFO L226 Difference]: Without dead ends: 2140 [2022-03-19 13:53:45,754 INFO L911 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 [2022-03-19 13:53:45,755 INFO L912 BasicCegarLoop]: 218 mSDtfsCounter, 79 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-19 13:53:45,755 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 526 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 492 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-03-19 13:53:45,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2140 states. [2022-03-19 13:53:45,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2140 to 1691. [2022-03-19 13:53:45,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1691 states, 1686 states have (on average 1.431791221826809) internal successors, (2414), 1686 states have internal predecessors, (2414), 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) [2022-03-19 13:53:45,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1691 states to 1691 states and 2418 transitions. [2022-03-19 13:53:45,907 INFO L78 Accepts]: Start accepts. Automaton has 1691 states and 2418 transitions. Word has length 240 [2022-03-19 13:53:45,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:53:45,907 INFO L478 AbstractCegarLoop]: Abstraction has 1691 states and 2418 transitions. [2022-03-19 13:53:45,907 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 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) [2022-03-19 13:53:45,908 INFO L276 IsEmpty]: Start isEmpty. Operand 1691 states and 2418 transitions. [2022-03-19 13:53:45,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-03-19 13:53:45,910 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:53:45,910 INFO L500 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 9, 9, 8, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:53:45,910 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-03-19 13:53:45,910 INFO L403 AbstractCegarLoop]: === Iteration 33 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:53:45,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:53:45,915 INFO L85 PathProgramCache]: Analyzing trace with hash 372650669, now seen corresponding path program 1 times [2022-03-19 13:53:45,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:53:45,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1877834606] [2022-03-19 13:53:57,238 WARN L232 SmtUtils]: Spent 9.77s on a formula simplification that was a NOOP. DAG size: 229 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-19 13:54:08,188 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:54:08,188 INFO L85 PathProgramCache]: Analyzing trace with hash 372650669, now seen corresponding path program 2 times [2022-03-19 13:54:08,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:54:08,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936232582] [2022-03-19 13:54:08,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:54:08,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:54:08,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:54:08,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:54:08,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:54:08,387 INFO L134 CoverageAnalysis]: Checked inductivity of 778 backedges. 466 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-03-19 13:54:08,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:54:08,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936232582] [2022-03-19 13:54:08,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936232582] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:54:08,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:54:08,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:54:08,387 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:54:08,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1877834606] [2022-03-19 13:54:08,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1877834606] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:54:08,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:54:08,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:54:08,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240735114] [2022-03-19 13:54:08,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:54:08,388 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 13:54:08,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:54:08,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 13:54:08,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 13:54:08,388 INFO L87 Difference]: Start difference. First operand 1691 states and 2418 transitions. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 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) [2022-03-19 13:54:10,397 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 [] [2022-03-19 13:54:11,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:54:11,026 INFO L93 Difference]: Finished difference Result 3743 states and 5340 transitions. [2022-03-19 13:54:11,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 13:54:11,026 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 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 241 [2022-03-19 13:54:11,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:54:11,030 INFO L225 Difference]: With dead ends: 3743 [2022-03-19 13:54:11,030 INFO L226 Difference]: Without dead ends: 2068 [2022-03-19 13:54:11,032 INFO L911 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 [2022-03-19 13:54:11,033 INFO L912 BasicCegarLoop]: 109 mSDtfsCounter, 115 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 42 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-19 13:54:11,033 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 302 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 395 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-03-19 13:54:11,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2068 states. [2022-03-19 13:54:11,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2068 to 1691. [2022-03-19 13:54:11,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1691 states, 1686 states have (on average 1.4116251482799524) internal successors, (2380), 1686 states have internal predecessors, (2380), 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) [2022-03-19 13:54:11,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1691 states to 1691 states and 2384 transitions. [2022-03-19 13:54:11,204 INFO L78 Accepts]: Start accepts. Automaton has 1691 states and 2384 transitions. Word has length 241 [2022-03-19 13:54:11,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:54:11,204 INFO L478 AbstractCegarLoop]: Abstraction has 1691 states and 2384 transitions. [2022-03-19 13:54:11,205 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 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) [2022-03-19 13:54:11,205 INFO L276 IsEmpty]: Start isEmpty. Operand 1691 states and 2384 transitions. [2022-03-19 13:54:11,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2022-03-19 13:54:11,207 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:54:11,207 INFO L500 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 8, 8, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:54:11,207 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-03-19 13:54:11,207 INFO L403 AbstractCegarLoop]: === Iteration 34 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:54:11,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:54:11,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1834770450, now seen corresponding path program 1 times [2022-03-19 13:54:11,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:54:11,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [856983113] [2022-03-19 13:54:29,195 WARN L232 SmtUtils]: Spent 9.82s on a formula simplification that was a NOOP. DAG size: 229 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-19 13:54:38,323 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:54:38,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1834770450, now seen corresponding path program 2 times [2022-03-19 13:54:38,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:54:38,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549706418] [2022-03-19 13:54:38,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:54:38,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:54:38,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:54:38,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:54:38,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:54:38,493 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 438 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2022-03-19 13:54:38,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:54:38,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549706418] [2022-03-19 13:54:38,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549706418] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:54:38,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:54:38,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:54:38,494 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:54:38,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [856983113] [2022-03-19 13:54:38,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [856983113] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:54:38,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:54:38,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:54:38,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583846348] [2022-03-19 13:54:38,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:54:38,495 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 13:54:38,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:54:38,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 13:54:38,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 13:54:38,495 INFO L87 Difference]: Start difference. First operand 1691 states and 2384 transitions. Second operand has 5 states, 5 states have (on average 27.6) internal successors, (138), 4 states have internal predecessors, (138), 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) [2022-03-19 13:54:40,503 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 [] [2022-03-19 13:54:41,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:54:41,096 INFO L93 Difference]: Finished difference Result 3743 states and 5272 transitions. [2022-03-19 13:54:41,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 13:54:41,096 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 4 states have internal predecessors, (138), 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 244 [2022-03-19 13:54:41,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:54:41,098 INFO L225 Difference]: With dead ends: 3743 [2022-03-19 13:54:41,099 INFO L226 Difference]: Without dead ends: 2068 [2022-03-19 13:54:41,100 INFO L911 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 [2022-03-19 13:54:41,101 INFO L912 BasicCegarLoop]: 98 mSDtfsCounter, 90 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 45 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-03-19 13:54:41,101 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 280 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 383 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-03-19 13:54:41,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2068 states. [2022-03-19 13:54:41,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2068 to 1763. [2022-03-19 13:54:41,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1763 states, 1758 states have (on average 1.4323094425483505) internal successors, (2518), 1758 states have internal predecessors, (2518), 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) [2022-03-19 13:54:41,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 2522 transitions. [2022-03-19 13:54:41,289 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 2522 transitions. Word has length 244 [2022-03-19 13:54:41,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:54:41,290 INFO L478 AbstractCegarLoop]: Abstraction has 1763 states and 2522 transitions. [2022-03-19 13:54:41,290 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 4 states have internal predecessors, (138), 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) [2022-03-19 13:54:41,290 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 2522 transitions. [2022-03-19 13:54:41,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2022-03-19 13:54:41,292 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:54:41,292 INFO L500 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 8, 8, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:54:41,292 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-03-19 13:54:41,292 INFO L403 AbstractCegarLoop]: === Iteration 35 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:54:41,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:54:41,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1796436705, now seen corresponding path program 1 times [2022-03-19 13:54:41,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:54:41,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [496190550] [2022-03-19 13:55:07,129 WARN L232 SmtUtils]: Spent 12.57s on a formula simplification that was a NOOP. DAG size: 229 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-19 13:55:14,319 WARN L232 SmtUtils]: Spent 5.04s on a formula simplification that was a NOOP. DAG size: 154 (called from [L 269] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-19 13:55:21,682 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:55:21,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1796436705, now seen corresponding path program 2 times [2022-03-19 13:55:21,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:55:21,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430908816] [2022-03-19 13:55:21,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:55:21,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:55:21,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:55:21,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:55:21,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:55:21,861 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 438 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2022-03-19 13:55:21,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:55:21,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430908816] [2022-03-19 13:55:21,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430908816] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:55:21,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:55:21,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:55:21,861 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:55:21,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [496190550] [2022-03-19 13:55:21,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [496190550] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:55:21,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:55:21,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:55:21,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209183401] [2022-03-19 13:55:21,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:55:21,862 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 13:55:21,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:55:21,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 13:55:21,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 13:55:21,863 INFO L87 Difference]: Start difference. First operand 1763 states and 2522 transitions. Second operand has 5 states, 5 states have (on average 27.6) internal successors, (138), 4 states have internal predecessors, (138), 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) [2022-03-19 13:55:23,871 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 [] [2022-03-19 13:55:24,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:55:24,629 INFO L93 Difference]: Finished difference Result 3773 states and 5384 transitions. [2022-03-19 13:55:24,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 13:55:24,630 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 4 states have internal predecessors, (138), 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 244 [2022-03-19 13:55:24,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:55:24,632 INFO L225 Difference]: With dead ends: 3773 [2022-03-19 13:55:24,632 INFO L226 Difference]: Without dead ends: 2026 [2022-03-19 13:55:24,634 INFO L911 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 [2022-03-19 13:55:24,635 INFO L912 BasicCegarLoop]: 195 mSDtfsCounter, 26 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-19 13:55:24,635 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 480 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 391 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-03-19 13:55:24,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2026 states. [2022-03-19 13:55:24,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2026 to 1961. [2022-03-19 13:55:24,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1961 states, 1956 states have (on average 1.4284253578732107) internal successors, (2794), 1956 states have internal predecessors, (2794), 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) [2022-03-19 13:55:24,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1961 states to 1961 states and 2798 transitions. [2022-03-19 13:55:24,865 INFO L78 Accepts]: Start accepts. Automaton has 1961 states and 2798 transitions. Word has length 244 [2022-03-19 13:55:24,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:55:24,865 INFO L478 AbstractCegarLoop]: Abstraction has 1961 states and 2798 transitions. [2022-03-19 13:55:24,865 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 4 states have internal predecessors, (138), 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) [2022-03-19 13:55:24,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1961 states and 2798 transitions. [2022-03-19 13:55:24,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2022-03-19 13:55:24,868 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:55:24,868 INFO L500 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 8, 8, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:55:24,868 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-03-19 13:55:24,871 INFO L403 AbstractCegarLoop]: === Iteration 36 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:55:24,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:55:24,871 INFO L85 PathProgramCache]: Analyzing trace with hash 236957341, now seen corresponding path program 1 times [2022-03-19 13:55:24,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:55:24,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1623300704] [2022-03-19 13:55:57,672 WARN L232 SmtUtils]: Spent 19.45s on a formula simplification that was a NOOP. DAG size: 229 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-19 13:56:09,765 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:56:09,766 INFO L85 PathProgramCache]: Analyzing trace with hash 236957341, now seen corresponding path program 2 times [2022-03-19 13:56:09,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:56:09,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774237178] [2022-03-19 13:56:09,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:56:09,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:56:09,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:56:09,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:56:09,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:56:09,920 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 438 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2022-03-19 13:56:09,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:56:09,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774237178] [2022-03-19 13:56:09,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774237178] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:56:09,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:56:09,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:56:09,921 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:56:09,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1623300704] [2022-03-19 13:56:09,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1623300704] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:56:09,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:56:09,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:56:09,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784184817] [2022-03-19 13:56:09,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:56:09,921 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 13:56:09,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:56:09,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 13:56:09,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 13:56:09,922 INFO L87 Difference]: Start difference. First operand 1961 states and 2798 transitions. Second operand has 5 states, 5 states have (on average 27.6) internal successors, (138), 4 states have internal predecessors, (138), 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) [2022-03-19 13:56:11,930 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 [] [2022-03-19 13:56:12,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:56:12,485 INFO L93 Difference]: Finished difference Result 4007 states and 5714 transitions. [2022-03-19 13:56:12,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 13:56:12,485 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 4 states have internal predecessors, (138), 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 244 [2022-03-19 13:56:12,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:56:12,487 INFO L225 Difference]: With dead ends: 4007 [2022-03-19 13:56:12,488 INFO L226 Difference]: Without dead ends: 2062 [2022-03-19 13:56:12,490 INFO L911 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 [2022-03-19 13:56:12,490 INFO L912 BasicCegarLoop]: 191 mSDtfsCounter, 20 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-03-19 13:56:12,490 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 472 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 366 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-03-19 13:56:12,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2062 states. [2022-03-19 13:56:12,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2062 to 2015. [2022-03-19 13:56:12,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2015 states, 2010 states have (on average 1.4288557213930348) internal successors, (2872), 2010 states have internal predecessors, (2872), 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) [2022-03-19 13:56:12,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2015 states to 2015 states and 2876 transitions. [2022-03-19 13:56:12,714 INFO L78 Accepts]: Start accepts. Automaton has 2015 states and 2876 transitions. Word has length 244 [2022-03-19 13:56:12,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:56:12,714 INFO L478 AbstractCegarLoop]: Abstraction has 2015 states and 2876 transitions. [2022-03-19 13:56:12,715 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 4 states have internal predecessors, (138), 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) [2022-03-19 13:56:12,715 INFO L276 IsEmpty]: Start isEmpty. Operand 2015 states and 2876 transitions. [2022-03-19 13:56:12,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2022-03-19 13:56:12,717 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:56:12,717 INFO L500 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 9, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:56:12,717 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-03-19 13:56:12,717 INFO L403 AbstractCegarLoop]: === Iteration 37 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:56:12,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:56:12,718 INFO L85 PathProgramCache]: Analyzing trace with hash 117979849, now seen corresponding path program 1 times [2022-03-19 13:56:12,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:56:12,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [222943590] [2022-03-19 13:56:27,516 WARN L232 SmtUtils]: Spent 8.09s on a formula simplification that was a NOOP. DAG size: 229 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-19 13:56:35,234 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:56:35,234 INFO L85 PathProgramCache]: Analyzing trace with hash 117979849, now seen corresponding path program 2 times [2022-03-19 13:56:35,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:56:35,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364724809] [2022-03-19 13:56:35,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:56:35,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:56:35,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:56:35,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:56:35,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:56:35,430 INFO L134 CoverageAnalysis]: Checked inductivity of 852 backedges. 483 proven. 0 refuted. 0 times theorem prover too weak. 369 trivial. 0 not checked. [2022-03-19 13:56:35,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:56:35,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364724809] [2022-03-19 13:56:35,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364724809] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:56:35,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:56:35,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:56:35,430 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:56:35,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [222943590] [2022-03-19 13:56:35,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [222943590] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:56:35,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:56:35,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:56:35,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604537926] [2022-03-19 13:56:35,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:56:35,431 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 13:56:35,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:56:35,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 13:56:35,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 13:56:35,433 INFO L87 Difference]: Start difference. First operand 2015 states and 2876 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 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) [2022-03-19 13:56:37,441 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 []