/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_srvr.blast.16.i.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-5d317bd [2022-03-19 13:51:26,504 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-19 13:51:26,505 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-19 13:51:26,552 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-19 13:51:26,553 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-19 13:51:26,553 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-19 13:51:26,555 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-19 13:51:26,556 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-19 13:51:26,557 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-19 13:51:26,557 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-19 13:51:26,558 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-19 13:51:26,558 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-19 13:51:26,559 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-19 13:51:26,559 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-19 13:51:26,560 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-19 13:51:26,561 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-19 13:51:26,561 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-19 13:51:26,562 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-19 13:51:26,563 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-19 13:51:26,564 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-19 13:51:26,565 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-19 13:51:26,566 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-19 13:51:26,566 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-19 13:51:26,567 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-19 13:51:26,568 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-19 13:51:26,569 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-19 13:51:26,574 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-19 13:51:26,575 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-19 13:51:26,575 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-19 13:51:26,576 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 13:51:26,582 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-19 13:51:26,582 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-19 13:51:26,583 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-19 13:51:26,583 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-19 13:51:26,583 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-19 13:51:26,583 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-19 13:51:26,583 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-19 13:51:26,583 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-19 13:51:26,583 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-19 13:51:26,584 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-19 13:51:26,584 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-19 13:51:26,584 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-19 13:51:26,584 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-19 13:51:26,584 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-19 13:51:26,584 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-19 13:51:26,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-19 13:51:26,584 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-19 13:51:26,585 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-19 13:51:26,585 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-03-19 13:51:26,585 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-03-19 13:51:26,585 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-19 13:51:26,585 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-03-19 13:51:26,585 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-19 13:51:26,767 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-19 13:51:26,788 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-19 13:51:26,790 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-19 13:51:26,790 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-19 13:51:26,793 INFO L275 PluginConnector]: CDTParser initialized [2022-03-19 13:51:26,794 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/openssl/s3_srvr.blast.16.i.cil-2.c [2022-03-19 13:51:26,849 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/934fcb78e/5ae6018779dd441daf70eb85ce2cd80e/FLAGad62d7d6a [2022-03-19 13:51:27,263 INFO L306 CDTParser]: Found 1 translation units. [2022-03-19 13:51:27,267 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/openssl/s3_srvr.blast.16.i.cil-2.c [2022-03-19 13:51:27,288 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/934fcb78e/5ae6018779dd441daf70eb85ce2cd80e/FLAGad62d7d6a [2022-03-19 13:51:27,305 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/934fcb78e/5ae6018779dd441daf70eb85ce2cd80e [2022-03-19 13:51:27,307 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-19 13:51:27,310 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-19 13:51:27,312 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-19 13:51:27,312 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-19 13:51:27,315 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-19 13:51:27,316 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 01:51:27" (1/1) ... [2022-03-19 13:51:27,316 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@547ca1e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:51:27, skipping insertion in model container [2022-03-19 13:51:27,316 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 01:51:27" (1/1) ... [2022-03-19 13:51:27,322 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-19 13:51:27,369 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-19 13:51:27,609 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_srvr.blast.16.i.cil-2.c[77660,77673] [2022-03-19 13:51:27,624 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-19 13:51:27,632 INFO L203 MainTranslator]: Completed pre-run [2022-03-19 13:51:27,701 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_srvr.blast.16.i.cil-2.c[77660,77673] [2022-03-19 13:51:27,704 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-19 13:51:27,714 INFO L208 MainTranslator]: Completed translation [2022-03-19 13:51:27,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:51:27 WrapperNode [2022-03-19 13:51:27,714 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-19 13:51:27,715 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-19 13:51:27,715 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-19 13:51:27,715 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-19 13:51:27,727 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:51:27" (1/1) ... [2022-03-19 13:51:27,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:51:27" (1/1) ... [2022-03-19 13:51:27,751 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:51:27" (1/1) ... [2022-03-19 13:51:27,752 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:51:27" (1/1) ... [2022-03-19 13:51:27,802 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:51:27" (1/1) ... [2022-03-19 13:51:27,816 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:51:27" (1/1) ... [2022-03-19 13:51:27,819 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:51:27" (1/1) ... [2022-03-19 13:51:27,823 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-19 13:51:27,824 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-19 13:51:27,824 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-19 13:51:27,824 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-19 13:51:27,830 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:51:27" (1/1) ... [2022-03-19 13:51:27,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-19 13:51:27,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 13:51:27,860 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 13:51:27,871 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 13:51:27,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-19 13:51:27,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-19 13:51:27,894 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-19 13:51:27,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_get_server_method [2022-03-19 13:51:27,895 INFO L138 BoogieDeclarations]: Found implementation of procedure SSLv3_server_method [2022-03-19 13:51:27,895 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-19 13:51:27,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2022-03-19 13:51:27,896 INFO L138 BoogieDeclarations]: Found implementation of procedure sslv3_base_method [2022-03-19 13:51:27,896 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-03-19 13:51:27,896 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-03-19 13:51:27,896 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-19 13:51:27,896 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-19 13:51:27,896 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-19 13:51:27,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-19 13:51:27,897 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-03-19 13:51:27,898 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-03-19 13:51:27,898 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-19 13:51:27,898 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-03-19 13:51:27,899 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2022-03-19 13:51:27,899 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2022-03-19 13:51:27,899 INFO L130 BoogieDeclarations]: Found specification of procedure SSLv3_server_method [2022-03-19 13:51:27,899 INFO L130 BoogieDeclarations]: Found specification of procedure sslv3_base_method [2022-03-19 13:51:27,899 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2022-03-19 13:51:27,899 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_get_server_method [2022-03-19 13:51:27,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-03-19 13:51:27,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-03-19 13:51:27,899 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-19 13:51:27,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-03-19 13:51:27,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-19 13:51:27,899 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-03-19 13:51:27,900 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-19 13:51:27,900 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2022-03-19 13:51:27,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-03-19 13:51:27,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-19 13:51:27,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-19 13:51:27,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-19 13:51:27,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-03-19 13:51:27,900 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-03-19 13:51:27,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-03-19 13:51:27,900 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-03-19 13:51:27,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-19 13:51:28,038 INFO L234 CfgBuilder]: Building ICFG [2022-03-19 13:51:28,039 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-19 13:51:29,026 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 13:51:29,350 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2022-03-19 13:51:29,350 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2022-03-19 13:51:29,359 INFO L275 CfgBuilder]: Performing block encoding [2022-03-19 13:51:29,365 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-19 13:51:29,365 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-19 13:51:29,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 01:51:29 BoogieIcfgContainer [2022-03-19 13:51:29,367 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-19 13:51:29,368 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-19 13:51:29,368 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-19 13:51:29,371 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-19 13:51:29,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.03 01:51:27" (1/3) ... [2022-03-19 13:51:29,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3adf14b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 01:51:29, skipping insertion in model container [2022-03-19 13:51:29,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:51:27" (2/3) ... [2022-03-19 13:51:29,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3adf14b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 01:51:29, skipping insertion in model container [2022-03-19 13:51:29,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 01:51:29" (3/3) ... [2022-03-19 13:51:29,373 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.16.i.cil-2.c [2022-03-19 13:51:29,376 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-19 13:51:29,377 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-19 13:51:29,427 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-19 13:51:29,432 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 13:51:29,432 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-19 13:51:29,448 INFO L276 IsEmpty]: Start isEmpty. Operand has 167 states, 159 states have (on average 1.7232704402515724) internal successors, (274), 160 states have internal predecessors, (274), 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 13:51:29,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-03-19 13:51:29,473 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:51:29,474 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:51:29,474 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:51:29,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:51:29,482 INFO L85 PathProgramCache]: Analyzing trace with hash 2779566, now seen corresponding path program 1 times [2022-03-19 13:51:29,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:51:29,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1309205677] [2022-03-19 13:51:29,499 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 13:51:29,499 INFO L85 PathProgramCache]: Analyzing trace with hash 2779566, now seen corresponding path program 2 times [2022-03-19 13:51:29,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:51:29,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079763118] [2022-03-19 13:51:29,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:51:29,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:51:29,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:51:29,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:51:29,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:51:29,981 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 13:51:29,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:51:29,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079763118] [2022-03-19 13:51:29,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079763118] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:51:29,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:51:29,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:51:29,985 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:51:29,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1309205677] [2022-03-19 13:51:29,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1309205677] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:51:29,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:51:29,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:51:29,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994473689] [2022-03-19 13:51:29,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:51:29,991 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 13:51:29,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:51:30,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 13:51:30,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 13:51:30,016 INFO L87 Difference]: Start difference. First operand has 167 states, 159 states have (on average 1.7232704402515724) internal successors, (274), 160 states have internal predecessors, (274), 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 9.4) internal successors, (47), 4 states have internal predecessors, (47), 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 13:51:33,200 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 13:51:34,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:51:34,240 INFO L93 Difference]: Finished difference Result 456 states and 778 transitions. [2022-03-19 13:51:34,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 13:51:34,245 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 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 51 [2022-03-19 13:51:34,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:51:34,252 INFO L225 Difference]: With dead ends: 456 [2022-03-19 13:51:34,252 INFO L226 Difference]: Without dead ends: 278 [2022-03-19 13:51:34,255 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 13:51:34,257 INFO L912 BasicCegarLoop]: 176 mSDtfsCounter, 170 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 63 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-03-19 13:51:34,258 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 517 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 553 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2022-03-19 13:51:34,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-03-19 13:51:34,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 191. [2022-03-19 13:51:34,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 186 states have (on average 1.6236559139784945) internal successors, (302), 186 states have internal predecessors, (302), 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 13:51:34,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 306 transitions. [2022-03-19 13:51:34,301 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 306 transitions. Word has length 51 [2022-03-19 13:51:34,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:51:34,301 INFO L478 AbstractCegarLoop]: Abstraction has 191 states and 306 transitions. [2022-03-19 13:51:34,301 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 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 13:51:34,301 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 306 transitions. [2022-03-19 13:51:34,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-03-19 13:51:34,303 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:51:34,303 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, 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 13:51:34,303 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-19 13:51:34,303 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:51:34,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:51:34,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1115524430, now seen corresponding path program 1 times [2022-03-19 13:51:34,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:51:34,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1037796042] [2022-03-19 13:51:34,305 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 13:51:34,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1115524430, now seen corresponding path program 2 times [2022-03-19 13:51:34,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:51:34,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890672489] [2022-03-19 13:51:34,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:51:34,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:51:34,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:51:34,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:51:34,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:51:34,522 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 13:51:34,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:51:34,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890672489] [2022-03-19 13:51:34,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890672489] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:51:34,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:51:34,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:51:34,530 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:51:34,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1037796042] [2022-03-19 13:51:34,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1037796042] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:51:34,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:51:34,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:51:34,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126266181] [2022-03-19 13:51:34,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:51:34,532 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 13:51:34,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:51:34,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 13:51:34,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 13:51:34,532 INFO L87 Difference]: Start difference. First operand 191 states and 306 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 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 13:51:37,071 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:51:39,097 WARN L534 Checker$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 13:51:40,696 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:51:41,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:51:41,205 INFO L93 Difference]: Finished difference Result 493 states and 793 transitions. [2022-03-19 13:51:41,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 13:51:41,206 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 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 52 [2022-03-19 13:51:41,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:51:41,208 INFO L225 Difference]: With dead ends: 493 [2022-03-19 13:51:41,208 INFO L226 Difference]: Without dead ends: 317 [2022-03-19 13:51:41,209 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 13:51:41,209 INFO L912 BasicCegarLoop]: 149 mSDtfsCounter, 137 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 62 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-03-19 13:51:41,210 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 424 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 507 Invalid, 2 Unknown, 0 Unchecked, 6.6s Time] [2022-03-19 13:51:41,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2022-03-19 13:51:41,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 231. [2022-03-19 13:51:41,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 226 states have (on average 1.663716814159292) internal successors, (376), 226 states have internal predecessors, (376), 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 13:51:41,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 380 transitions. [2022-03-19 13:51:41,224 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 380 transitions. Word has length 52 [2022-03-19 13:51:41,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:51:41,224 INFO L478 AbstractCegarLoop]: Abstraction has 231 states and 380 transitions. [2022-03-19 13:51:41,224 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 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 13:51:41,224 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 380 transitions. [2022-03-19 13:51:41,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-03-19 13:51:41,226 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:51:41,227 INFO L500 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:51:41,227 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-19 13:51:41,227 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:51:41,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:51:41,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1310946806, now seen corresponding path program 1 times [2022-03-19 13:51:41,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:51:41,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [543576425] [2022-03-19 13:51:41,236 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-19 13:51:41,236 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:51:41,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1310946806, now seen corresponding path program 2 times [2022-03-19 13:51:41,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:51:41,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468006708] [2022-03-19 13:51:41,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:51:41,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:51:41,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:51:41,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:51:41,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:51:41,381 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-03-19 13:51:41,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:51:41,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468006708] [2022-03-19 13:51:41,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468006708] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:51:41,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:51:41,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:51:41,382 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:51:41,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [543576425] [2022-03-19 13:51:41,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [543576425] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:51:41,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:51:41,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:51:41,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200835378] [2022-03-19 13:51:41,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:51:41,385 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 13:51:41,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:51:41,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 13:51:41,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 13:51:41,386 INFO L87 Difference]: Start difference. First operand 231 states and 380 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 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 13:51:42,617 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:51:44,633 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 13:51:45,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:51:45,485 INFO L93 Difference]: Finished difference Result 475 states and 782 transitions. [2022-03-19 13:51:45,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 13:51:45,485 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 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 13:51:45,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:51:45,486 INFO L225 Difference]: With dead ends: 475 [2022-03-19 13:51:45,486 INFO L226 Difference]: Without dead ends: 259 [2022-03-19 13:51:45,487 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 13:51:45,488 INFO L912 BasicCegarLoop]: 204 mSDtfsCounter, 22 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-03-19 13:51:45,488 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 535 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 383 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2022-03-19 13:51:45,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2022-03-19 13:51:45,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 242. [2022-03-19 13:51:45,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 237 states have (on average 1.6666666666666667) internal successors, (395), 237 states have internal predecessors, (395), 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 13:51:45,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 399 transitions. [2022-03-19 13:51:45,502 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 399 transitions. Word has length 80 [2022-03-19 13:51:45,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:51:45,503 INFO L478 AbstractCegarLoop]: Abstraction has 242 states and 399 transitions. [2022-03-19 13:51:45,503 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 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 13:51:45,503 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 399 transitions. [2022-03-19 13:51:45,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-03-19 13:51:45,505 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:51:45,505 INFO L500 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 13:51:45,505 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-19 13:51:45,505 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:51:45,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:51:45,506 INFO L85 PathProgramCache]: Analyzing trace with hash -338295341, now seen corresponding path program 1 times [2022-03-19 13:51:45,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:51:45,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [223601918] [2022-03-19 13:51:45,530 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-19 13:51:45,530 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:51:45,530 INFO L85 PathProgramCache]: Analyzing trace with hash -338295341, now seen corresponding path program 2 times [2022-03-19 13:51:45,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:51:45,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773642938] [2022-03-19 13:51:45,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:51:45,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:51:45,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:51:45,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:51:45,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:51:45,663 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-03-19 13:51:45,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:51:45,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773642938] [2022-03-19 13:51:45,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773642938] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:51:45,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:51:45,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:51:45,664 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:51:45,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [223601918] [2022-03-19 13:51:45,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [223601918] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:51:45,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:51:45,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:51:45,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568435851] [2022-03-19 13:51:45,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:51:45,668 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 13:51:45,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:51:45,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 13:51:45,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 13:51:45,669 INFO L87 Difference]: Start difference. First operand 242 states and 399 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 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 13:51:47,619 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:51:50,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:51:50,183 INFO L93 Difference]: Finished difference Result 475 states and 781 transitions. [2022-03-19 13:51:50,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 13:51:50,184 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 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 93 [2022-03-19 13:51:50,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:51:50,185 INFO L225 Difference]: With dead ends: 475 [2022-03-19 13:51:50,185 INFO L226 Difference]: Without dead ends: 259 [2022-03-19 13:51:50,186 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 13:51:50,186 INFO L912 BasicCegarLoop]: 205 mSDtfsCounter, 24 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-03-19 13:51:50,186 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 537 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-03-19 13:51:50,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2022-03-19 13:51:50,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 242. [2022-03-19 13:51:50,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 237 states have (on average 1.6624472573839661) internal successors, (394), 237 states have internal predecessors, (394), 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 13:51:50,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 398 transitions. [2022-03-19 13:51:50,203 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 398 transitions. Word has length 93 [2022-03-19 13:51:50,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:51:50,204 INFO L478 AbstractCegarLoop]: Abstraction has 242 states and 398 transitions. [2022-03-19 13:51:50,204 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 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 13:51:50,204 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 398 transitions. [2022-03-19 13:51:50,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-03-19 13:51:50,210 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:51:50,210 INFO L500 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:51:50,210 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-19 13:51:50,210 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:51:50,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:51:50,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1659065219, now seen corresponding path program 1 times [2022-03-19 13:51:50,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:51:50,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [793402649] [2022-03-19 13:51:50,229 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-19 13:51:50,230 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:51:50,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1659065219, now seen corresponding path program 2 times [2022-03-19 13:51:50,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:51:50,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266084238] [2022-03-19 13:51:50,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:51:50,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:51:50,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:51:50,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:51:50,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:51:50,341 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-03-19 13:51:50,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:51:50,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266084238] [2022-03-19 13:51:50,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266084238] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:51:50,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:51:50,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:51:50,342 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:51:50,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [793402649] [2022-03-19 13:51:50,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [793402649] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:51:50,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:51:50,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:51:50,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798348911] [2022-03-19 13:51:50,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:51:50,345 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 13:51:50,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:51:50,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 13:51:50,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 13:51:50,346 INFO L87 Difference]: Start difference. First operand 242 states and 398 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 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 13:51:51,609 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:51:53,718 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:51:55,741 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 13:51:56,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:51:56,227 INFO L93 Difference]: Finished difference Result 543 states and 883 transitions. [2022-03-19 13:51:56,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 13:51:56,227 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 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 94 [2022-03-19 13:51:56,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:51:56,228 INFO L225 Difference]: With dead ends: 543 [2022-03-19 13:51:56,228 INFO L226 Difference]: Without dead ends: 327 [2022-03-19 13:51:56,229 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 13:51:56,230 INFO L912 BasicCegarLoop]: 150 mSDtfsCounter, 165 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 61 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-03-19 13:51:56,230 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 426 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 506 Invalid, 1 Unknown, 0 Unchecked, 5.8s Time] [2022-03-19 13:51:56,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2022-03-19 13:51:56,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 242. [2022-03-19 13:51:56,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 237 states have (on average 1.649789029535865) internal successors, (391), 237 states have internal predecessors, (391), 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 13:51:56,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 395 transitions. [2022-03-19 13:51:56,240 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 395 transitions. Word has length 94 [2022-03-19 13:51:56,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:51:56,240 INFO L478 AbstractCegarLoop]: Abstraction has 242 states and 395 transitions. [2022-03-19 13:51:56,240 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 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 13:51:56,240 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 395 transitions. [2022-03-19 13:51:56,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-03-19 13:51:56,241 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:51:56,241 INFO L500 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:51:56,241 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-19 13:51:56,241 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:51:56,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:51:56,242 INFO L85 PathProgramCache]: Analyzing trace with hash 197522711, now seen corresponding path program 1 times [2022-03-19 13:51:56,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:51:56,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [795507379] [2022-03-19 13:51:56,248 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-19 13:51:56,249 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:51:56,249 INFO L85 PathProgramCache]: Analyzing trace with hash 197522711, now seen corresponding path program 2 times [2022-03-19 13:51:56,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:51:56,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179388275] [2022-03-19 13:51:56,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:51:56,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:51:56,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:51:56,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:51:56,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:51:56,370 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-03-19 13:51:56,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:51:56,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179388275] [2022-03-19 13:51:56,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179388275] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:51:56,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:51:56,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:51:56,370 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:51:56,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [795507379] [2022-03-19 13:51:56,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [795507379] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:51:56,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:51:56,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:51:56,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266354574] [2022-03-19 13:51:56,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:51:56,372 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 13:51:56,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:51:56,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 13:51:56,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 13:51:56,372 INFO L87 Difference]: Start difference. First operand 242 states and 395 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 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 13:51:58,141 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:52:00,036 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:52:00,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:52:00,431 INFO L93 Difference]: Finished difference Result 474 states and 774 transitions. [2022-03-19 13:52:00,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 13:52:00,432 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 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 94 [2022-03-19 13:52:00,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:52:00,433 INFO L225 Difference]: With dead ends: 474 [2022-03-19 13:52:00,433 INFO L226 Difference]: Without dead ends: 258 [2022-03-19 13:52:00,433 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 13:52:00,434 INFO L912 BasicCegarLoop]: 206 mSDtfsCounter, 26 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-03-19 13:52:00,434 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 539 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-03-19 13:52:00,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2022-03-19 13:52:00,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 242. [2022-03-19 13:52:00,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 237 states have (on average 1.6455696202531647) internal successors, (390), 237 states have internal predecessors, (390), 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 13:52:00,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 394 transitions. [2022-03-19 13:52:00,442 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 394 transitions. Word has length 94 [2022-03-19 13:52:00,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:52:00,442 INFO L478 AbstractCegarLoop]: Abstraction has 242 states and 394 transitions. [2022-03-19 13:52:00,443 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 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 13:52:00,443 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 394 transitions. [2022-03-19 13:52:00,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-03-19 13:52:00,443 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:52:00,444 INFO L500 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:52:00,444 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-19 13:52:00,444 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:52:00,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:52:00,444 INFO L85 PathProgramCache]: Analyzing trace with hash -430804402, now seen corresponding path program 1 times [2022-03-19 13:52:00,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:52:00,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2091430630] [2022-03-19 13:52:00,451 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-19 13:52:00,451 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:52:00,452 INFO L85 PathProgramCache]: Analyzing trace with hash -430804402, now seen corresponding path program 2 times [2022-03-19 13:52:00,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:52:00,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98294083] [2022-03-19 13:52:00,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:52:00,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:52:00,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:52:00,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:52:00,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:52:00,567 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-03-19 13:52:00,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:52:00,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98294083] [2022-03-19 13:52:00,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98294083] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:52:00,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:52:00,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:52:00,568 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:52:00,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2091430630] [2022-03-19 13:52:00,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2091430630] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:52:00,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:52:00,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:52:00,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429535694] [2022-03-19 13:52:00,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:52:00,569 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 13:52:00,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:52:00,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 13:52:00,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 13:52:00,570 INFO L87 Difference]: Start difference. First operand 242 states and 394 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 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 13:52:02,577 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 13:52:02,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:52:02,927 INFO L93 Difference]: Finished difference Result 472 states and 771 transitions. [2022-03-19 13:52:02,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 13:52:02,927 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 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 94 [2022-03-19 13:52:02,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:52:02,928 INFO L225 Difference]: With dead ends: 472 [2022-03-19 13:52:02,928 INFO L226 Difference]: Without dead ends: 256 [2022-03-19 13:52:02,929 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 13:52:02,929 INFO L912 BasicCegarLoop]: 208 mSDtfsCounter, 20 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-03-19 13:52:02,930 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 543 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 372 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-03-19 13:52:02,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2022-03-19 13:52:02,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 242. [2022-03-19 13:52:02,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 237 states have (on average 1.641350210970464) internal successors, (389), 237 states have internal predecessors, (389), 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 13:52:02,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 393 transitions. [2022-03-19 13:52:02,937 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 393 transitions. Word has length 94 [2022-03-19 13:52:02,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:52:02,937 INFO L478 AbstractCegarLoop]: Abstraction has 242 states and 393 transitions. [2022-03-19 13:52:02,937 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 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 13:52:02,937 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 393 transitions. [2022-03-19 13:52:02,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-03-19 13:52:02,938 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:52:02,938 INFO L500 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:52:02,938 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-19 13:52:02,938 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:52:02,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:52:02,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1807527119, now seen corresponding path program 1 times [2022-03-19 13:52:02,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:52:02,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [289308856] [2022-03-19 13:52:02,945 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-19 13:52:02,945 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:52:02,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1807527119, now seen corresponding path program 2 times [2022-03-19 13:52:02,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:52:02,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819344620] [2022-03-19 13:52:02,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:52:02,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:52:02,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:52:03,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:52:03,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:52:03,030 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-03-19 13:52:03,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:52:03,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819344620] [2022-03-19 13:52:03,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819344620] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:52:03,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:52:03,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:52:03,031 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:52:03,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [289308856] [2022-03-19 13:52:03,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [289308856] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:52:03,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:52:03,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:52:03,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360193723] [2022-03-19 13:52:03,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:52:03,031 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 13:52:03,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:52:03,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 13:52:03,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 13:52:03,032 INFO L87 Difference]: Start difference. First operand 242 states and 393 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 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 13:52:05,935 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:52:08,324 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:52:08,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:52:08,702 INFO L93 Difference]: Finished difference Result 471 states and 769 transitions. [2022-03-19 13:52:08,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 13:52:08,702 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 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 94 [2022-03-19 13:52:08,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:52:08,703 INFO L225 Difference]: With dead ends: 471 [2022-03-19 13:52:08,703 INFO L226 Difference]: Without dead ends: 255 [2022-03-19 13:52:08,704 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 13:52:08,704 INFO L912 BasicCegarLoop]: 209 mSDtfsCounter, 18 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-03-19 13:52:08,705 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 545 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 373 Invalid, 1 Unknown, 0 Unchecked, 5.6s Time] [2022-03-19 13:52:08,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2022-03-19 13:52:08,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 242. [2022-03-19 13:52:08,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 237 states have (on average 1.6371308016877637) internal successors, (388), 237 states have internal predecessors, (388), 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 13:52:08,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 392 transitions. [2022-03-19 13:52:08,712 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 392 transitions. Word has length 94 [2022-03-19 13:52:08,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:52:08,714 INFO L478 AbstractCegarLoop]: Abstraction has 242 states and 392 transitions. [2022-03-19 13:52:08,714 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 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 13:52:08,714 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 392 transitions. [2022-03-19 13:52:08,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-03-19 13:52:08,715 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:52:08,715 INFO L500 BasicCegarLoop]: trace histogram [3, 3, 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 13:52:08,715 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-19 13:52:08,715 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:52:08,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:52:08,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1400111428, now seen corresponding path program 1 times [2022-03-19 13:52:08,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:52:08,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [754216444] [2022-03-19 13:52:08,723 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-19 13:52:08,723 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:52:08,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1400111428, now seen corresponding path program 2 times [2022-03-19 13:52:08,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:52:08,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601788468] [2022-03-19 13:52:08,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:52:08,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:52:08,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:52:08,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:52:08,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:52:08,823 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-03-19 13:52:08,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:52:08,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601788468] [2022-03-19 13:52:08,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601788468] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:52:08,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:52:08,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:52:08,824 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:52:08,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [754216444] [2022-03-19 13:52:08,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [754216444] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:52:08,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:52:08,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:52:08,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649874595] [2022-03-19 13:52:08,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:52:08,825 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 13:52:08,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:52:08,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 13:52:08,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 13:52:08,826 INFO L87 Difference]: Start difference. First operand 242 states and 392 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 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 13:52:11,823 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:52:14,384 WARN L534 Checker$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 13:52:14,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:52:14,732 INFO L93 Difference]: Finished difference Result 471 states and 768 transitions. [2022-03-19 13:52:14,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 13:52:14,733 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 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 95 [2022-03-19 13:52:14,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:52:14,734 INFO L225 Difference]: With dead ends: 471 [2022-03-19 13:52:14,734 INFO L226 Difference]: Without dead ends: 255 [2022-03-19 13:52:14,735 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 13:52:14,735 INFO L912 BasicCegarLoop]: 209 mSDtfsCounter, 22 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 8 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-03-19 13:52:14,735 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 545 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 372 Invalid, 2 Unknown, 0 Unchecked, 5.9s Time] [2022-03-19 13:52:14,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2022-03-19 13:52:14,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 242. [2022-03-19 13:52:14,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 237 states have (on average 1.6329113924050633) internal successors, (387), 237 states have internal predecessors, (387), 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 13:52:14,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 391 transitions. [2022-03-19 13:52:14,742 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 391 transitions. Word has length 95 [2022-03-19 13:52:14,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:52:14,742 INFO L478 AbstractCegarLoop]: Abstraction has 242 states and 391 transitions. [2022-03-19 13:52:14,742 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 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 13:52:14,743 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 391 transitions. [2022-03-19 13:52:14,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-19 13:52:14,743 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:52:14,743 INFO L500 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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 13:52:14,744 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-19 13:52:14,744 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:52:14,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:52:14,744 INFO L85 PathProgramCache]: Analyzing trace with hash 680501820, now seen corresponding path program 1 times [2022-03-19 13:52:14,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:52:14,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2052825010] [2022-03-19 13:52:14,781 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-19 13:52:14,782 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:52:14,782 INFO L85 PathProgramCache]: Analyzing trace with hash 680501820, now seen corresponding path program 2 times [2022-03-19 13:52:14,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:52:14,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671267778] [2022-03-19 13:52:14,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:52:14,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:52:14,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:52:14,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:52:14,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:52:14,871 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-03-19 13:52:14,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:52:14,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671267778] [2022-03-19 13:52:14,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671267778] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:52:14,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:52:14,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:52:14,871 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:52:14,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2052825010] [2022-03-19 13:52:14,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2052825010] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:52:14,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:52:14,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:52:14,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934689875] [2022-03-19 13:52:14,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:52:14,872 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 13:52:14,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:52:14,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 13:52:14,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 13:52:14,872 INFO L87 Difference]: Start difference. First operand 242 states and 391 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 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 13:52:16,903 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:52:17,970 WARN L534 Checker$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 13:52:19,987 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 13:52:20,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:52:20,461 INFO L93 Difference]: Finished difference Result 543 states and 874 transitions. [2022-03-19 13:52:20,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 13:52:20,463 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 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 96 [2022-03-19 13:52:20,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:52:20,464 INFO L225 Difference]: With dead ends: 543 [2022-03-19 13:52:20,464 INFO L226 Difference]: Without dead ends: 327 [2022-03-19 13:52:20,465 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 13:52:20,465 INFO L912 BasicCegarLoop]: 150 mSDtfsCounter, 161 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 61 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-03-19 13:52:20,465 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 426 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 506 Invalid, 1 Unknown, 0 Unchecked, 5.6s Time] [2022-03-19 13:52:20,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2022-03-19 13:52:20,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 242. [2022-03-19 13:52:20,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 237 states have (on average 1.620253164556962) internal successors, (384), 237 states have internal predecessors, (384), 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 13:52:20,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 388 transitions. [2022-03-19 13:52:20,473 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 388 transitions. Word has length 96 [2022-03-19 13:52:20,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:52:20,473 INFO L478 AbstractCegarLoop]: Abstraction has 242 states and 388 transitions. [2022-03-19 13:52:20,473 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 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 13:52:20,473 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 388 transitions. [2022-03-19 13:52:20,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-03-19 13:52:20,474 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:52:20,474 INFO L500 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1] [2022-03-19 13:52:20,474 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-19 13:52:20,474 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:52:20,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:52:20,475 INFO L85 PathProgramCache]: Analyzing trace with hash 822667073, now seen corresponding path program 1 times [2022-03-19 13:52:20,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:52:20,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [898126916] [2022-03-19 13:52:20,483 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-19 13:52:20,484 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:52:20,484 INFO L85 PathProgramCache]: Analyzing trace with hash 822667073, now seen corresponding path program 2 times [2022-03-19 13:52:20,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:52:20,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906342484] [2022-03-19 13:52:20,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:52:20,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:52:20,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:52:20,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:52:20,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:52:20,582 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-03-19 13:52:20,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:52:20,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906342484] [2022-03-19 13:52:20,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906342484] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:52:20,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:52:20,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:52:20,583 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:52:20,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [898126916] [2022-03-19 13:52:20,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [898126916] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:52:20,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:52:20,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:52:20,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090779581] [2022-03-19 13:52:20,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:52:20,584 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 13:52:20,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:52:20,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 13:52:20,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 13:52:20,585 INFO L87 Difference]: Start difference. First operand 242 states and 388 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 13:52:22,042 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:52:24,066 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:52:26,857 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:52:27,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:52:27,184 INFO L93 Difference]: Finished difference Result 461 states and 749 transitions. [2022-03-19 13:52:27,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 13:52:27,185 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 97 [2022-03-19 13:52:27,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:52:27,186 INFO L225 Difference]: With dead ends: 461 [2022-03-19 13:52:27,186 INFO L226 Difference]: Without dead ends: 245 [2022-03-19 13:52:27,187 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 13:52:27,187 INFO L912 BasicCegarLoop]: 216 mSDtfsCounter, 11 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-03-19 13:52:27,187 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 559 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 359 Invalid, 1 Unknown, 0 Unchecked, 6.6s Time] [2022-03-19 13:52:27,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2022-03-19 13:52:27,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 242. [2022-03-19 13:52:27,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 237 states have (on average 1.6160337552742616) internal successors, (383), 237 states have internal predecessors, (383), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 13:52:27,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 387 transitions. [2022-03-19 13:52:27,194 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 387 transitions. Word has length 97 [2022-03-19 13:52:27,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:52:27,194 INFO L478 AbstractCegarLoop]: Abstraction has 242 states and 387 transitions. [2022-03-19 13:52:27,195 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 13:52:27,195 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 387 transitions. [2022-03-19 13:52:27,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-03-19 13:52:27,195 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:52:27,195 INFO L500 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 13:52:27,196 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-19 13:52:27,196 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:52:27,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:52:27,196 INFO L85 PathProgramCache]: Analyzing trace with hash -499583574, now seen corresponding path program 1 times [2022-03-19 13:52:27,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:52:27,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [666051409] [2022-03-19 13:52:27,208 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-19 13:52:27,209 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:52:27,209 INFO L85 PathProgramCache]: Analyzing trace with hash -499583574, now seen corresponding path program 2 times [2022-03-19 13:52:27,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:52:27,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94542320] [2022-03-19 13:52:27,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:52:27,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:52:27,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:52:27,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:52:27,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:52:27,306 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 13:52:27,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:52:27,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94542320] [2022-03-19 13:52:27,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94542320] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:52:27,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:52:27,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:52:27,307 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:52:27,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [666051409] [2022-03-19 13:52:27,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [666051409] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:52:27,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:52:27,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:52:27,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798177441] [2022-03-19 13:52:27,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:52:27,307 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 13:52:27,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:52:27,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 13:52:27,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 13:52:27,308 INFO L87 Difference]: Start difference. First operand 242 states and 387 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 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 13:52:29,068 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:52:31,094 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:52:33,577 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 13:52:34,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:52:34,062 INFO L93 Difference]: Finished difference Result 619 states and 1006 transitions. [2022-03-19 13:52:34,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 13:52:34,062 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 97 [2022-03-19 13:52:34,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:52:34,064 INFO L225 Difference]: With dead ends: 619 [2022-03-19 13:52:34,064 INFO L226 Difference]: Without dead ends: 403 [2022-03-19 13:52:34,064 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 13:52:34,065 INFO L912 BasicCegarLoop]: 142 mSDtfsCounter, 142 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 50 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-03-19 13:52:34,065 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 410 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 486 Invalid, 2 Unknown, 0 Unchecked, 6.7s Time] [2022-03-19 13:52:34,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2022-03-19 13:52:34,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 306. [2022-03-19 13:52:34,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 301 states have (on average 1.6445182724252492) internal successors, (495), 301 states have internal predecessors, (495), 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 13:52:34,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 499 transitions. [2022-03-19 13:52:34,075 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 499 transitions. Word has length 97 [2022-03-19 13:52:34,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:52:34,075 INFO L478 AbstractCegarLoop]: Abstraction has 306 states and 499 transitions. [2022-03-19 13:52:34,075 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 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 13:52:34,076 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 499 transitions. [2022-03-19 13:52:34,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-03-19 13:52:34,076 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:52:34,076 INFO L500 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 13:52:34,077 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-03-19 13:52:34,077 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:52:34,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:52:34,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1310599712, now seen corresponding path program 1 times [2022-03-19 13:52:34,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:52:34,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [800163760] [2022-03-19 13:52:34,085 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-19 13:52:34,085 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:52:34,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1310599712, now seen corresponding path program 2 times [2022-03-19 13:52:34,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:52:34,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57312215] [2022-03-19 13:52:34,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:52:34,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:52:34,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:52:34,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:52:34,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:52:34,170 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-03-19 13:52:34,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:52:34,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57312215] [2022-03-19 13:52:34,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57312215] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:52:34,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:52:34,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:52:34,172 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:52:34,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [800163760] [2022-03-19 13:52:34,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [800163760] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:52:34,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:52:34,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:52:34,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218747288] [2022-03-19 13:52:34,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:52:34,172 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 13:52:34,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:52:34,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 13:52:34,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 13:52:34,173 INFO L87 Difference]: Start difference. First operand 306 states and 499 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 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 13:52:35,534 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:52:37,399 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:52:38,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:52:38,505 INFO L93 Difference]: Finished difference Result 628 states and 1031 transitions. [2022-03-19 13:52:38,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 13:52:38,505 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 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 103 [2022-03-19 13:52:38,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:52:38,507 INFO L225 Difference]: With dead ends: 628 [2022-03-19 13:52:38,507 INFO L226 Difference]: Without dead ends: 348 [2022-03-19 13:52:38,507 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 13:52:38,508 INFO L912 BasicCegarLoop]: 213 mSDtfsCounter, 32 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-03-19 13:52:38,508 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 559 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-03-19 13:52:38,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2022-03-19 13:52:38,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 328. [2022-03-19 13:52:38,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 323 states have (on average 1.6439628482972137) internal successors, (531), 323 states have internal predecessors, (531), 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 13:52:38,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 535 transitions. [2022-03-19 13:52:38,519 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 535 transitions. Word has length 103 [2022-03-19 13:52:38,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:52:38,519 INFO L478 AbstractCegarLoop]: Abstraction has 328 states and 535 transitions. [2022-03-19 13:52:38,519 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 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 13:52:38,519 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 535 transitions. [2022-03-19 13:52:38,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-03-19 13:52:38,520 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:52:38,520 INFO L500 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2022-03-19 13:52:38,520 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-03-19 13:52:38,521 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:52:38,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:52:38,521 INFO L85 PathProgramCache]: Analyzing trace with hash 953723551, now seen corresponding path program 1 times [2022-03-19 13:52:38,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:52:38,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1078790986] [2022-03-19 13:52:38,530 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-19 13:52:38,530 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:52:38,530 INFO L85 PathProgramCache]: Analyzing trace with hash 953723551, now seen corresponding path program 2 times [2022-03-19 13:52:38,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:52:38,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467939944] [2022-03-19 13:52:38,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:52:38,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:52:38,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:52:38,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:52:38,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:52:38,617 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-03-19 13:52:38,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:52:38,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467939944] [2022-03-19 13:52:38,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467939944] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:52:38,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:52:38,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:52:38,618 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:52:38,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1078790986] [2022-03-19 13:52:38,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1078790986] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:52:38,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:52:38,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:52:38,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435338953] [2022-03-19 13:52:38,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:52:38,618 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 13:52:38,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:52:38,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 13:52:38,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 13:52:38,624 INFO L87 Difference]: Start difference. First operand 328 states and 535 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 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 13:52:41,946 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 13:52:43,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:52:43,145 INFO L93 Difference]: Finished difference Result 755 states and 1234 transitions. [2022-03-19 13:52:43,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 13:52:43,146 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 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 110 [2022-03-19 13:52:43,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:52:43,147 INFO L225 Difference]: With dead ends: 755 [2022-03-19 13:52:43,147 INFO L226 Difference]: Without dead ends: 453 [2022-03-19 13:52:43,148 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 13:52:43,148 INFO L912 BasicCegarLoop]: 265 mSDtfsCounter, 159 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 47 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-03-19 13:52:43,148 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 656 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 623 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2022-03-19 13:52:43,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2022-03-19 13:52:43,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 344. [2022-03-19 13:52:43,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 339 states have (on average 1.6253687315634218) internal successors, (551), 339 states have internal predecessors, (551), 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 13:52:43,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 555 transitions. [2022-03-19 13:52:43,160 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 555 transitions. Word has length 110 [2022-03-19 13:52:43,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:52:43,161 INFO L478 AbstractCegarLoop]: Abstraction has 344 states and 555 transitions. [2022-03-19 13:52:43,161 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 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 13:52:43,161 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 555 transitions. [2022-03-19 13:52:43,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-03-19 13:52:43,162 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:52:43,162 INFO L500 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2022-03-19 13:52:43,162 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-03-19 13:52:43,162 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:52:43,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:52:43,162 INFO L85 PathProgramCache]: Analyzing trace with hash 967075586, now seen corresponding path program 1 times [2022-03-19 13:52:43,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:52:43,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [372060956] [2022-03-19 13:52:43,173 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-19 13:52:43,173 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:52:43,173 INFO L85 PathProgramCache]: Analyzing trace with hash 967075586, now seen corresponding path program 2 times [2022-03-19 13:52:43,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:52:43,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584614030] [2022-03-19 13:52:43,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:52:43,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:52:43,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:52:43,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:52:43,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:52:43,268 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-03-19 13:52:43,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:52:43,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584614030] [2022-03-19 13:52:43,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584614030] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:52:43,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:52:43,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:52:43,268 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:52:43,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [372060956] [2022-03-19 13:52:43,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [372060956] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:52:43,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:52:43,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:52:43,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203346494] [2022-03-19 13:52:43,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:52:43,269 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 13:52:43,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:52:43,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 13:52:43,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 13:52:43,269 INFO L87 Difference]: Start difference. First operand 344 states and 555 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 13:52:44,652 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:52:46,675 WARN L534 Checker$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 13:52:48,697 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:52:50,720 WARN L534 Checker$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 13:52:51,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:52:51,149 INFO L93 Difference]: Finished difference Result 747 states and 1204 transitions. [2022-03-19 13:52:51,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 13:52:51,150 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 111 [2022-03-19 13:52:51,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:52:51,151 INFO L225 Difference]: With dead ends: 747 [2022-03-19 13:52:51,151 INFO L226 Difference]: Without dead ends: 429 [2022-03-19 13:52:51,152 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 13:52:51,152 INFO L912 BasicCegarLoop]: 136 mSDtfsCounter, 158 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 63 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-03-19 13:52:51,152 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 398 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 490 Invalid, 3 Unknown, 0 Unchecked, 7.8s Time] [2022-03-19 13:52:51,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2022-03-19 13:52:51,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 344. [2022-03-19 13:52:51,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 339 states have (on average 1.6106194690265487) internal successors, (546), 339 states have internal predecessors, (546), 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 13:52:51,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 550 transitions. [2022-03-19 13:52:51,169 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 550 transitions. Word has length 111 [2022-03-19 13:52:51,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:52:51,169 INFO L478 AbstractCegarLoop]: Abstraction has 344 states and 550 transitions. [2022-03-19 13:52:51,169 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 13:52:51,169 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 550 transitions. [2022-03-19 13:52:51,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-03-19 13:52:51,170 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:52:51,170 INFO L500 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:52:51,170 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-03-19 13:52:51,171 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:52:51,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:52:51,171 INFO L85 PathProgramCache]: Analyzing trace with hash -764973759, now seen corresponding path program 1 times [2022-03-19 13:52:51,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:52:51,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [607056999] [2022-03-19 13:52:51,181 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-19 13:52:51,181 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:52:51,182 INFO L85 PathProgramCache]: Analyzing trace with hash -764973759, now seen corresponding path program 2 times [2022-03-19 13:52:51,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:52:51,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059302844] [2022-03-19 13:52:51,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:52:51,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:52:51,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:52:51,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:52:51,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:52:51,274 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-03-19 13:52:51,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:52:51,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059302844] [2022-03-19 13:52:51,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059302844] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:52:51,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:52:51,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:52:51,276 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:52:51,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [607056999] [2022-03-19 13:52:51,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [607056999] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:52:51,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:52:51,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:52:51,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307578696] [2022-03-19 13:52:51,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:52:51,277 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 13:52:51,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:52:51,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 13:52:51,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 13:52:51,277 INFO L87 Difference]: Start difference. First operand 344 states and 550 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 13:52:52,891 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:52:54,914 WARN L534 Checker$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 13:52:56,940 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:52:58,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:52:58,005 INFO L93 Difference]: Finished difference Result 674 states and 1085 transitions. [2022-03-19 13:52:58,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 13:52:58,006 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 117 [2022-03-19 13:52:58,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:52:58,007 INFO L225 Difference]: With dead ends: 674 [2022-03-19 13:52:58,007 INFO L226 Difference]: Without dead ends: 356 [2022-03-19 13:52:58,008 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 13:52:58,008 INFO L912 BasicCegarLoop]: 246 mSDtfsCounter, 20 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 9 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-03-19 13:52:58,008 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 624 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 410 Invalid, 2 Unknown, 0 Unchecked, 6.7s Time] [2022-03-19 13:52:58,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-03-19 13:52:58,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 344. [2022-03-19 13:52:58,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 339 states have (on average 1.607669616519174) internal successors, (545), 339 states have internal predecessors, (545), 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 13:52:58,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 549 transitions. [2022-03-19 13:52:58,020 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 549 transitions. Word has length 117 [2022-03-19 13:52:58,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:52:58,020 INFO L478 AbstractCegarLoop]: Abstraction has 344 states and 549 transitions. [2022-03-19 13:52:58,020 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 13:52:58,020 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 549 transitions. [2022-03-19 13:52:58,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-03-19 13:52:58,021 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:52:58,021 INFO L500 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:52:58,021 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-03-19 13:52:58,021 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:52:58,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:52:58,021 INFO L85 PathProgramCache]: Analyzing trace with hash 2075359993, now seen corresponding path program 1 times [2022-03-19 13:52:58,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:52:58,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [362960931] [2022-03-19 13:52:58,030 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-19 13:52:58,031 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:52:58,031 INFO L85 PathProgramCache]: Analyzing trace with hash 2075359993, now seen corresponding path program 2 times [2022-03-19 13:52:58,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:52:58,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545804533] [2022-03-19 13:52:58,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:52:58,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:52:58,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:52:58,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:52:58,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:52:58,113 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-03-19 13:52:58,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:52:58,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545804533] [2022-03-19 13:52:58,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545804533] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:52:58,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:52:58,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:52:58,113 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:52:58,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [362960931] [2022-03-19 13:52:58,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [362960931] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:52:58,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:52:58,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:52:58,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488174275] [2022-03-19 13:52:58,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:52:58,114 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 13:52:58,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:52:58,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 13:52:58,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 13:52:58,114 INFO L87 Difference]: Start difference. First operand 344 states and 549 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 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 13:53:00,554 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 13:53:02,578 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:53:04,601 WARN L534 Checker$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 13:53:05,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:53:05,043 INFO L93 Difference]: Finished difference Result 746 states and 1191 transitions. [2022-03-19 13:53:05,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 13:53:05,044 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 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 117 [2022-03-19 13:53:05,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:53:05,048 INFO L225 Difference]: With dead ends: 746 [2022-03-19 13:53:05,048 INFO L226 Difference]: Without dead ends: 428 [2022-03-19 13:53:05,049 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 13:53:05,049 INFO L912 BasicCegarLoop]: 137 mSDtfsCounter, 156 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 62 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-03-19 13:53:05,049 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 400 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 488 Invalid, 3 Unknown, 0 Unchecked, 6.9s Time] [2022-03-19 13:53:05,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2022-03-19 13:53:05,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 344. [2022-03-19 13:53:05,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 339 states have (on average 1.592920353982301) internal successors, (540), 339 states have internal predecessors, (540), 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 13:53:05,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 544 transitions. [2022-03-19 13:53:05,062 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 544 transitions. Word has length 117 [2022-03-19 13:53:05,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:53:05,062 INFO L478 AbstractCegarLoop]: Abstraction has 344 states and 544 transitions. [2022-03-19 13:53:05,062 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 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 13:53:05,063 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 544 transitions. [2022-03-19 13:53:05,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-03-19 13:53:05,063 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:53:05,063 INFO L500 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:53:05,064 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-03-19 13:53:05,064 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:53:05,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:53:05,064 INFO L85 PathProgramCache]: Analyzing trace with hash -501273454, now seen corresponding path program 1 times [2022-03-19 13:53:05,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:53:05,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1327739103] [2022-03-19 13:53:05,077 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-19 13:53:05,077 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:53:05,077 INFO L85 PathProgramCache]: Analyzing trace with hash -501273454, now seen corresponding path program 2 times [2022-03-19 13:53:05,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:53:05,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209541929] [2022-03-19 13:53:05,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:53:05,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:53:05,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:53:05,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:53:05,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:53:05,169 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-03-19 13:53:05,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:53:05,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209541929] [2022-03-19 13:53:05,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209541929] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:53:05,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:53:05,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:53:05,170 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:53:05,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1327739103] [2022-03-19 13:53:05,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1327739103] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:53:05,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:53:05,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:53:05,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969349289] [2022-03-19 13:53:05,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:53:05,170 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 13:53:05,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:53:05,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 13:53:05,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 13:53:05,171 INFO L87 Difference]: Start difference. First operand 344 states and 544 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 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 13:53:08,630 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:53:10,655 WARN L534 Checker$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 13:53:11,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:53:11,104 INFO L93 Difference]: Finished difference Result 746 states and 1181 transitions. [2022-03-19 13:53:11,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 13:53:11,105 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 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 13:53:11,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:53:11,106 INFO L225 Difference]: With dead ends: 746 [2022-03-19 13:53:11,106 INFO L226 Difference]: Without dead ends: 428 [2022-03-19 13:53:11,107 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 13:53:11,107 INFO L912 BasicCegarLoop]: 137 mSDtfsCounter, 161 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 62 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-03-19 13:53:11,107 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 400 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 489 Invalid, 2 Unknown, 0 Unchecked, 5.9s Time] [2022-03-19 13:53:11,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2022-03-19 13:53:11,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 344. [2022-03-19 13:53:11,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 339 states have (on average 1.575221238938053) internal successors, (534), 339 states have internal predecessors, (534), 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 13:53:11,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 538 transitions. [2022-03-19 13:53:11,120 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 538 transitions. Word has length 118 [2022-03-19 13:53:11,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:53:11,120 INFO L478 AbstractCegarLoop]: Abstraction has 344 states and 538 transitions. [2022-03-19 13:53:11,120 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 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 13:53:11,120 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 538 transitions. [2022-03-19 13:53:11,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-03-19 13:53:11,121 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:53:11,121 INFO L500 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:53:11,121 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-03-19 13:53:11,121 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:53:11,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:53:11,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1729898699, now seen corresponding path program 1 times [2022-03-19 13:53:11,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:53:11,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [405231413] [2022-03-19 13:53:11,133 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-19 13:53:11,133 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:53:11,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1729898699, now seen corresponding path program 2 times [2022-03-19 13:53:11,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:53:11,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508479915] [2022-03-19 13:53:11,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:53:11,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:53:11,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:53:11,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:53:11,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:53:11,212 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-03-19 13:53:11,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:53:11,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508479915] [2022-03-19 13:53:11,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508479915] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:53:11,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:53:11,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:53:11,213 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:53:11,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [405231413] [2022-03-19 13:53:11,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [405231413] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:53:11,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:53:11,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:53:11,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658967333] [2022-03-19 13:53:11,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:53:11,213 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 13:53:11,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:53:11,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 13:53:11,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 13:53:11,214 INFO L87 Difference]: Start difference. First operand 344 states and 538 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 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 13:53:14,660 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:53:16,685 WARN L534 Checker$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 13:53:17,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:53:17,035 INFO L93 Difference]: Finished difference Result 679 states and 1069 transitions. [2022-03-19 13:53:17,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 13:53:17,035 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 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 119 [2022-03-19 13:53:17,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:53:17,036 INFO L225 Difference]: With dead ends: 679 [2022-03-19 13:53:17,036 INFO L226 Difference]: Without dead ends: 361 [2022-03-19 13:53:17,037 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 13:53:17,037 INFO L912 BasicCegarLoop]: 217 mSDtfsCounter, 36 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-03-19 13:53:17,038 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 565 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 406 Invalid, 1 Unknown, 0 Unchecked, 5.8s Time] [2022-03-19 13:53:17,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2022-03-19 13:53:17,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 344. [2022-03-19 13:53:17,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 339 states have (on average 1.5722713864306785) internal successors, (533), 339 states have internal predecessors, (533), 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 13:53:17,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 537 transitions. [2022-03-19 13:53:17,050 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 537 transitions. Word has length 119 [2022-03-19 13:53:17,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:53:17,050 INFO L478 AbstractCegarLoop]: Abstraction has 344 states and 537 transitions. [2022-03-19 13:53:17,050 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 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 13:53:17,050 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 537 transitions. [2022-03-19 13:53:17,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-03-19 13:53:17,051 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:53:17,051 INFO L500 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:53:17,051 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-03-19 13:53:17,051 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:53:17,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:53:17,052 INFO L85 PathProgramCache]: Analyzing trace with hash 982573584, now seen corresponding path program 1 times [2022-03-19 13:53:17,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:53:17,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [946180343] [2022-03-19 13:53:17,065 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-19 13:53:17,065 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:53:17,065 INFO L85 PathProgramCache]: Analyzing trace with hash 982573584, now seen corresponding path program 2 times [2022-03-19 13:53:17,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:53:17,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735605990] [2022-03-19 13:53:17,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:53:17,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:53:17,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:53:17,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:53:17,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:53:17,171 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-03-19 13:53:17,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:53:17,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735605990] [2022-03-19 13:53:17,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735605990] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:53:17,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:53:17,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:53:17,171 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:53:17,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [946180343] [2022-03-19 13:53:17,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [946180343] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:53:17,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:53:17,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:53:17,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017694453] [2022-03-19 13:53:17,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:53:17,172 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 13:53:17,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:53:17,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 13:53:17,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 13:53:17,173 INFO L87 Difference]: Start difference. First operand 344 states and 537 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 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 13:53:18,948 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:53:20,975 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:53:23,000 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:53:23,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:53:23,816 INFO L93 Difference]: Finished difference Result 669 states and 1054 transitions. [2022-03-19 13:53:23,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 13:53:23,816 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 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 121 [2022-03-19 13:53:23,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:53:23,817 INFO L225 Difference]: With dead ends: 669 [2022-03-19 13:53:23,817 INFO L226 Difference]: Without dead ends: 351 [2022-03-19 13:53:23,818 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 13:53:23,818 INFO L912 BasicCegarLoop]: 224 mSDtfsCounter, 26 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 5 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-03-19 13:53:23,818 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 579 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 391 Invalid, 2 Unknown, 0 Unchecked, 6.6s Time] [2022-03-19 13:53:23,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2022-03-19 13:53:23,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 344. [2022-03-19 13:53:23,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 339 states have (on average 1.5693215339233038) internal successors, (532), 339 states have internal predecessors, (532), 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 13:53:23,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 536 transitions. [2022-03-19 13:53:23,830 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 536 transitions. Word has length 121 [2022-03-19 13:53:23,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:53:23,831 INFO L478 AbstractCegarLoop]: Abstraction has 344 states and 536 transitions. [2022-03-19 13:53:23,831 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 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 13:53:23,831 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 536 transitions. [2022-03-19 13:53:23,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-03-19 13:53:23,832 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:53:23,832 INFO L500 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2022-03-19 13:53:23,832 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-03-19 13:53:23,832 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:53:23,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:53:23,832 INFO L85 PathProgramCache]: Analyzing trace with hash -532919832, now seen corresponding path program 1 times [2022-03-19 13:53:23,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:53:23,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [152636345] [2022-03-19 13:53:23,846 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-19 13:53:23,846 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:53:23,846 INFO L85 PathProgramCache]: Analyzing trace with hash -532919832, now seen corresponding path program 2 times [2022-03-19 13:53:23,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:53:23,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565000925] [2022-03-19 13:53:23,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:53:23,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:53:23,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:53:23,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:53:23,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:53:23,932 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-03-19 13:53:23,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:53:23,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565000925] [2022-03-19 13:53:23,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565000925] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:53:23,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:53:23,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:53:23,933 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:53:23,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [152636345] [2022-03-19 13:53:23,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [152636345] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:53:23,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:53:23,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:53:23,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271041708] [2022-03-19 13:53:23,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:53:23,933 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 13:53:23,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:53:23,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 13:53:23,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 13:53:23,934 INFO L87 Difference]: Start difference. First operand 344 states and 536 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 13:53:25,563 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:53:27,585 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:53:30,140 WARN L534 Checker$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 13:53:30,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:53:30,594 INFO L93 Difference]: Finished difference Result 786 states and 1231 transitions. [2022-03-19 13:53:30,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 13:53:30,595 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 125 [2022-03-19 13:53:30,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:53:30,596 INFO L225 Difference]: With dead ends: 786 [2022-03-19 13:53:30,597 INFO L226 Difference]: Without dead ends: 468 [2022-03-19 13:53:30,597 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 13:53:30,598 INFO L912 BasicCegarLoop]: 137 mSDtfsCounter, 135 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 59 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-03-19 13:53:30,598 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 400 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 490 Invalid, 2 Unknown, 0 Unchecked, 6.6s Time] [2022-03-19 13:53:30,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2022-03-19 13:53:30,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 381. [2022-03-19 13:53:30,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 376 states have (on average 1.574468085106383) internal successors, (592), 376 states have internal predecessors, (592), 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 13:53:30,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 596 transitions. [2022-03-19 13:53:30,613 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 596 transitions. Word has length 125 [2022-03-19 13:53:30,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:53:30,613 INFO L478 AbstractCegarLoop]: Abstraction has 381 states and 596 transitions. [2022-03-19 13:53:30,613 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 13:53:30,613 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 596 transitions. [2022-03-19 13:53:30,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-03-19 13:53:30,614 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:53:30,614 INFO L500 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:53:30,615 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-03-19 13:53:30,615 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:53:30,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:53:30,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1088367856, now seen corresponding path program 1 times [2022-03-19 13:53:30,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:53:30,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [74323765] [2022-03-19 13:53:30,625 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-19 13:53:30,626 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:53:30,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1088367856, now seen corresponding path program 2 times [2022-03-19 13:53:30,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:53:30,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257004184] [2022-03-19 13:53:30,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:53:30,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:53:30,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:53:30,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:53:30,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:53:30,713 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-03-19 13:53:30,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:53:30,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257004184] [2022-03-19 13:53:30,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257004184] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:53:30,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:53:30,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:53:30,713 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:53:30,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [74323765] [2022-03-19 13:53:30,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [74323765] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:53:30,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:53:30,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:53:30,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387200954] [2022-03-19 13:53:30,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:53:30,714 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 13:53:30,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:53:30,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 13:53:30,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 13:53:30,715 INFO L87 Difference]: Start difference. First operand 381 states and 596 transitions. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 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 13:53:33,165 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:53:34,258 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:53:35,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:53:35,631 INFO L93 Difference]: Finished difference Result 831 states and 1306 transitions. [2022-03-19 13:53:35,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 13:53:35,631 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 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 126 [2022-03-19 13:53:35,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:53:35,633 INFO L225 Difference]: With dead ends: 831 [2022-03-19 13:53:35,633 INFO L226 Difference]: Without dead ends: 476 [2022-03-19 13:53:35,634 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 13:53:35,634 INFO L912 BasicCegarLoop]: 199 mSDtfsCounter, 85 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-03-19 13:53:35,634 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 531 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 520 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2022-03-19 13:53:35,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2022-03-19 13:53:35,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 421. [2022-03-19 13:53:35,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 416 states have (on average 1.5769230769230769) internal successors, (656), 416 states have internal predecessors, (656), 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 13:53:35,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 660 transitions. [2022-03-19 13:53:35,651 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 660 transitions. Word has length 126 [2022-03-19 13:53:35,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:53:35,651 INFO L478 AbstractCegarLoop]: Abstraction has 421 states and 660 transitions. [2022-03-19 13:53:35,652 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 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 13:53:35,652 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 660 transitions. [2022-03-19 13:53:35,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-03-19 13:53:35,653 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:53:35,653 INFO L500 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:53:35,653 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-03-19 13:53:35,653 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:53:35,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:53:35,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1927401518, now seen corresponding path program 1 times [2022-03-19 13:53:35,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:53:35,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [987604138] [2022-03-19 13:53:35,664 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-19 13:53:35,664 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:53:35,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1927401518, now seen corresponding path program 2 times [2022-03-19 13:53:35,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:53:35,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621696483] [2022-03-19 13:53:35,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:53:35,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:53:35,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:53:35,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:53:35,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:53:35,756 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-03-19 13:53:35,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:53:35,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621696483] [2022-03-19 13:53:35,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621696483] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:53:35,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:53:35,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:53:35,757 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:53:35,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [987604138] [2022-03-19 13:53:35,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [987604138] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:53:35,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:53:35,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:53:35,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731237433] [2022-03-19 13:53:35,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:53:35,758 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 13:53:35,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:53:35,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 13:53:35,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 13:53:35,758 INFO L87 Difference]: Start difference. First operand 421 states and 660 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 13:53:36,874 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:53:38,146 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:53:39,729 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:53:41,748 WARN L534 Checker$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 13:53:42,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:53:42,135 INFO L93 Difference]: Finished difference Result 862 states and 1357 transitions. [2022-03-19 13:53:42,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 13:53:42,135 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 126 [2022-03-19 13:53:42,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:53:42,137 INFO L225 Difference]: With dead ends: 862 [2022-03-19 13:53:42,137 INFO L226 Difference]: Without dead ends: 467 [2022-03-19 13:53:42,137 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 13:53:42,138 INFO L912 BasicCegarLoop]: 263 mSDtfsCounter, 36 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-03-19 13:53:42,138 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 657 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 475 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2022-03-19 13:53:42,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2022-03-19 13:53:42,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 445. [2022-03-19 13:53:42,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 440 states have (on average 1.5727272727272728) internal successors, (692), 440 states have internal predecessors, (692), 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 13:53:42,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 696 transitions. [2022-03-19 13:53:42,156 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 696 transitions. Word has length 126 [2022-03-19 13:53:42,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:53:42,156 INFO L478 AbstractCegarLoop]: Abstraction has 445 states and 696 transitions. [2022-03-19 13:53:42,156 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 13:53:42,156 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 696 transitions. [2022-03-19 13:53:42,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-03-19 13:53:42,157 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:53:42,157 INFO L500 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:53:42,157 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-03-19 13:53:42,158 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:53:42,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:53:42,158 INFO L85 PathProgramCache]: Analyzing trace with hash 706398648, now seen corresponding path program 1 times [2022-03-19 13:53:42,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:53:42,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1979463328] [2022-03-19 13:53:42,170 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-19 13:53:42,171 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:53:42,171 INFO L85 PathProgramCache]: Analyzing trace with hash 706398648, now seen corresponding path program 2 times [2022-03-19 13:53:42,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:53:42,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740094971] [2022-03-19 13:53:42,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:53:42,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:53:42,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:53:42,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:53:42,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:53:42,281 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-03-19 13:53:42,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:53:42,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740094971] [2022-03-19 13:53:42,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740094971] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:53:42,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:53:42,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:53:42,281 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:53:42,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1979463328] [2022-03-19 13:53:42,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1979463328] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:53:42,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:53:42,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:53:42,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245286963] [2022-03-19 13:53:42,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:53:42,282 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 13:53:42,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:53:42,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 13:53:42,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 13:53:42,283 INFO L87 Difference]: Start difference. First operand 445 states and 696 transitions. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 4 states have internal predecessors, (119), 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 13:53:45,263 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:53:47,285 WARN L534 Checker$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 13:53:48,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:53:48,154 INFO L93 Difference]: Finished difference Result 988 states and 1550 transitions. [2022-03-19 13:53:48,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 13:53:48,155 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 4 states have internal predecessors, (119), 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 133 [2022-03-19 13:53:48,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:53:48,157 INFO L225 Difference]: With dead ends: 988 [2022-03-19 13:53:48,157 INFO L226 Difference]: Without dead ends: 569 [2022-03-19 13:53:48,158 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 13:53:48,158 INFO L912 BasicCegarLoop]: 137 mSDtfsCounter, 128 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 60 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-03-19 13:53:48,158 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 401 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 490 Invalid, 2 Unknown, 0 Unchecked, 5.8s Time] [2022-03-19 13:53:48,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2022-03-19 13:53:48,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 488. [2022-03-19 13:53:48,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 483 states have (on average 1.5776397515527951) internal successors, (762), 483 states have internal predecessors, (762), 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 13:53:48,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 766 transitions. [2022-03-19 13:53:48,179 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 766 transitions. Word has length 133 [2022-03-19 13:53:48,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:53:48,179 INFO L478 AbstractCegarLoop]: Abstraction has 488 states and 766 transitions. [2022-03-19 13:53:48,179 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 4 states have internal predecessors, (119), 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 13:53:48,179 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 766 transitions. [2022-03-19 13:53:48,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-03-19 13:53:48,180 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:53:48,180 INFO L500 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:53:48,181 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-03-19 13:53:48,181 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:53:48,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:53:48,181 INFO L85 PathProgramCache]: Analyzing trace with hash 749971168, now seen corresponding path program 1 times [2022-03-19 13:53:48,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:53:48,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1131288200] [2022-03-19 13:53:48,194 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-19 13:53:48,194 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:53:48,194 INFO L85 PathProgramCache]: Analyzing trace with hash 749971168, now seen corresponding path program 2 times [2022-03-19 13:53:48,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:53:48,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965905296] [2022-03-19 13:53:48,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:53:48,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:53:48,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:53:48,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:53:48,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:53:48,281 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-03-19 13:53:48,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:53:48,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965905296] [2022-03-19 13:53:48,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965905296] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:53:48,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:53:48,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:53:48,281 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:53:48,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1131288200] [2022-03-19 13:53:48,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1131288200] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:53:48,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:53:48,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:53:48,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766491973] [2022-03-19 13:53:48,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:53:48,282 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 13:53:48,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:53:48,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 13:53:48,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 13:53:48,282 INFO L87 Difference]: Start difference. First operand 488 states and 766 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 13:53:50,202 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:53:52,231 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:53:54,257 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:53:55,489 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:53:55,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:53:55,940 INFO L93 Difference]: Finished difference Result 1034 states and 1625 transitions. [2022-03-19 13:53:55,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 13:53:55,941 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 134 [2022-03-19 13:53:55,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:53:55,942 INFO L225 Difference]: With dead ends: 1034 [2022-03-19 13:53:55,943 INFO L226 Difference]: Without dead ends: 570 [2022-03-19 13:53:55,943 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 13:53:55,944 INFO L912 BasicCegarLoop]: 137 mSDtfsCounter, 129 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 60 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-03-19 13:53:55,944 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 400 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 489 Invalid, 2 Unknown, 0 Unchecked, 7.6s Time] [2022-03-19 13:53:55,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2022-03-19 13:53:55,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 490. [2022-03-19 13:53:55,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 485 states have (on average 1.577319587628866) internal successors, (765), 485 states have internal predecessors, (765), 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 13:53:55,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 769 transitions. [2022-03-19 13:53:55,965 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 769 transitions. Word has length 134 [2022-03-19 13:53:55,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:53:55,966 INFO L478 AbstractCegarLoop]: Abstraction has 490 states and 769 transitions. [2022-03-19 13:53:55,966 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 13:53:55,966 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 769 transitions. [2022-03-19 13:53:55,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-03-19 13:53:55,967 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:53:55,967 INFO L500 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2022-03-19 13:53:55,967 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-03-19 13:53:55,967 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:53:55,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:53:55,967 INFO L85 PathProgramCache]: Analyzing trace with hash -317430213, now seen corresponding path program 1 times [2022-03-19 13:53:55,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:53:55,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [323528495] [2022-03-19 13:53:55,983 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-19 13:53:55,983 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:53:55,983 INFO L85 PathProgramCache]: Analyzing trace with hash -317430213, now seen corresponding path program 2 times [2022-03-19 13:53:55,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:53:55,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470657404] [2022-03-19 13:53:55,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:53:55,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:53:56,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:53:56,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:53:56,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:53:56,102 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-03-19 13:53:56,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:53:56,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470657404] [2022-03-19 13:53:56,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470657404] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:53:56,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:53:56,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:53:56,103 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:53:56,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [323528495] [2022-03-19 13:53:56,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [323528495] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:53:56,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:53:56,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:53:56,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815318674] [2022-03-19 13:53:56,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:53:56,104 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 13:53:56,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:53:56,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 13:53:56,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 13:53:56,105 INFO L87 Difference]: Start difference. First operand 490 states and 769 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 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 13:53:59,484 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:53:59,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:53:59,917 INFO L93 Difference]: Finished difference Result 1034 states and 1624 transitions. [2022-03-19 13:53:59,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 13:53:59,917 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 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 142 [2022-03-19 13:53:59,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:53:59,919 INFO L225 Difference]: With dead ends: 1034 [2022-03-19 13:53:59,919 INFO L226 Difference]: Without dead ends: 570 [2022-03-19 13:53:59,920 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 13:53:59,920 INFO L912 BasicCegarLoop]: 138 mSDtfsCounter, 157 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-03-19 13:53:59,920 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 402 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-03-19 13:53:59,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2022-03-19 13:53:59,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 490. [2022-03-19 13:53:59,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 485 states have (on average 1.5587628865979382) internal successors, (756), 485 states have internal predecessors, (756), 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 13:53:59,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 760 transitions. [2022-03-19 13:53:59,943 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 760 transitions. Word has length 142 [2022-03-19 13:53:59,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:53:59,943 INFO L478 AbstractCegarLoop]: Abstraction has 490 states and 760 transitions. [2022-03-19 13:53:59,943 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 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 13:53:59,943 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 760 transitions. [2022-03-19 13:53:59,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-03-19 13:53:59,944 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:53:59,944 INFO L500 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2022-03-19 13:53:59,944 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-03-19 13:53:59,945 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:53:59,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:53:59,945 INFO L85 PathProgramCache]: Analyzing trace with hash 850745536, now seen corresponding path program 1 times [2022-03-19 13:53:59,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:53:59,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [203509845] [2022-03-19 13:53:59,958 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-19 13:53:59,959 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:53:59,959 INFO L85 PathProgramCache]: Analyzing trace with hash 850745536, now seen corresponding path program 2 times [2022-03-19 13:53:59,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:53:59,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669828526] [2022-03-19 13:53:59,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:53:59,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:54:00,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:54:00,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:54:00,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:54:00,063 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-03-19 13:54:00,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:54:00,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669828526] [2022-03-19 13:54:00,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669828526] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:54:00,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:54:00,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:54:00,064 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:54:00,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [203509845] [2022-03-19 13:54:00,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [203509845] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:54:00,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:54:00,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:54:00,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060937406] [2022-03-19 13:54:00,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:54:00,064 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 13:54:00,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:54:00,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 13:54:00,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 13:54:00,065 INFO L87 Difference]: Start difference. First operand 490 states and 760 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 13:54:01,703 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:54:03,644 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:54:04,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:54:04,386 INFO L93 Difference]: Finished difference Result 1024 states and 1593 transitions. [2022-03-19 13:54:04,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 13:54:04,387 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 144 [2022-03-19 13:54:04,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:54:04,388 INFO L225 Difference]: With dead ends: 1024 [2022-03-19 13:54:04,388 INFO L226 Difference]: Without dead ends: 560 [2022-03-19 13:54:04,389 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 13:54:04,390 INFO L912 BasicCegarLoop]: 162 mSDtfsCounter, 147 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-03-19 13:54:04,390 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 450 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-03-19 13:54:04,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2022-03-19 13:54:04,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 490. [2022-03-19 13:54:04,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 485 states have (on average 1.5402061855670104) internal successors, (747), 485 states have internal predecessors, (747), 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 13:54:04,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 751 transitions. [2022-03-19 13:54:04,414 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 751 transitions. Word has length 144 [2022-03-19 13:54:04,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:54:04,414 INFO L478 AbstractCegarLoop]: Abstraction has 490 states and 751 transitions. [2022-03-19 13:54:04,414 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 13:54:04,415 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 751 transitions. [2022-03-19 13:54:04,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-03-19 13:54:04,415 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:54:04,416 INFO L500 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:54:04,416 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-03-19 13:54:04,416 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:54:04,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:54:04,416 INFO L85 PathProgramCache]: Analyzing trace with hash -28401772, now seen corresponding path program 1 times [2022-03-19 13:54:04,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:54:04,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2081072152] [2022-03-19 13:54:04,428 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-19 13:54:04,428 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:54:04,429 INFO L85 PathProgramCache]: Analyzing trace with hash -28401772, now seen corresponding path program 2 times [2022-03-19 13:54:04,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:54:04,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541013546] [2022-03-19 13:54:04,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:54:04,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:54:04,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:54:04,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:54:04,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:54:04,516 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-03-19 13:54:04,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:54:04,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541013546] [2022-03-19 13:54:04,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541013546] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:54:04,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:54:04,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:54:04,517 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:54:04,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2081072152] [2022-03-19 13:54:04,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2081072152] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:54:04,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:54:04,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:54:04,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162192784] [2022-03-19 13:54:04,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:54:04,517 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 13:54:04,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:54:04,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 13:54:04,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 13:54:04,518 INFO L87 Difference]: Start difference. First operand 490 states and 751 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 13:54:06,527 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 13:54:06,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:54:06,990 INFO L93 Difference]: Finished difference Result 1066 states and 1641 transitions. [2022-03-19 13:54:06,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 13:54:06,991 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 146 [2022-03-19 13:54:06,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:54:06,993 INFO L225 Difference]: With dead ends: 1066 [2022-03-19 13:54:06,993 INFO L226 Difference]: Without dead ends: 602 [2022-03-19 13:54:06,993 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 13:54:06,994 INFO L912 BasicCegarLoop]: 162 mSDtfsCounter, 131 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 46 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-19 13:54:06,994 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 450 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 491 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-03-19 13:54:06,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2022-03-19 13:54:07,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 520. [2022-03-19 13:54:07,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 515 states have (on average 1.5281553398058252) internal successors, (787), 515 states have internal predecessors, (787), 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 13:54:07,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 791 transitions. [2022-03-19 13:54:07,020 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 791 transitions. Word has length 146 [2022-03-19 13:54:07,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:54:07,020 INFO L478 AbstractCegarLoop]: Abstraction has 520 states and 791 transitions. [2022-03-19 13:54:07,020 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 13:54:07,020 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 791 transitions. [2022-03-19 13:54:07,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-03-19 13:54:07,021 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:54:07,022 INFO L500 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 13:54:07,022 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-03-19 13:54:07,022 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:54:07,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:54:07,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1277749095, now seen corresponding path program 1 times [2022-03-19 13:54:07,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:54:07,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [18943198] [2022-03-19 13:54:07,034 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-19 13:54:07,034 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:54:07,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1277749095, now seen corresponding path program 2 times [2022-03-19 13:54:07,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:54:07,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784307881] [2022-03-19 13:54:07,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:54:07,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:54:07,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:54:07,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:54:07,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:54:07,127 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-03-19 13:54:07,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:54:07,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784307881] [2022-03-19 13:54:07,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784307881] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:54:07,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:54:07,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:54:07,127 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:54:07,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [18943198] [2022-03-19 13:54:07,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [18943198] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:54:07,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:54:07,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:54:07,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771615276] [2022-03-19 13:54:07,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:54:07,129 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 13:54:07,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:54:07,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 13:54:07,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 13:54:07,130 INFO L87 Difference]: Start difference. First operand 520 states and 791 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 13:54:08,585 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:54:10,608 WARN L534 Checker$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 13:54:12,696 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:54:13,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:54:13,100 INFO L93 Difference]: Finished difference Result 1050 states and 1604 transitions. [2022-03-19 13:54:13,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 13:54:13,100 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 147 [2022-03-19 13:54:13,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:54:13,102 INFO L225 Difference]: With dead ends: 1050 [2022-03-19 13:54:13,102 INFO L226 Difference]: Without dead ends: 556 [2022-03-19 13:54:13,103 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 13:54:13,103 INFO L912 BasicCegarLoop]: 210 mSDtfsCounter, 69 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-03-19 13:54:13,103 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 553 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 498 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2022-03-19 13:54:13,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2022-03-19 13:54:13,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 520. [2022-03-19 13:54:13,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 515 states have (on average 1.5262135922330098) internal successors, (786), 515 states have internal predecessors, (786), 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 13:54:13,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 790 transitions. [2022-03-19 13:54:13,130 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 790 transitions. Word has length 147 [2022-03-19 13:54:13,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:54:13,130 INFO L478 AbstractCegarLoop]: Abstraction has 520 states and 790 transitions. [2022-03-19 13:54:13,130 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 13:54:13,130 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 790 transitions. [2022-03-19 13:54:13,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-03-19 13:54:13,131 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:54:13,131 INFO L500 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1] [2022-03-19 13:54:13,131 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-03-19 13:54:13,131 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:54:13,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:54:13,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1338091482, now seen corresponding path program 1 times [2022-03-19 13:54:13,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:54:13,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1125648837] [2022-03-19 13:54:13,146 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-19 13:54:13,146 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:54:13,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1338091482, now seen corresponding path program 2 times [2022-03-19 13:54:13,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:54:13,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677930732] [2022-03-19 13:54:13,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:54:13,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:54:13,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:54:13,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:54:13,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:54:13,253 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-03-19 13:54:13,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:54:13,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677930732] [2022-03-19 13:54:13,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677930732] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:54:13,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:54:13,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:54:13,255 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:54:13,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1125648837] [2022-03-19 13:54:13,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1125648837] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:54:13,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:54:13,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:54:13,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922869991] [2022-03-19 13:54:13,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:54:13,257 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 13:54:13,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:54:13,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 13:54:13,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 13:54:13,257 INFO L87 Difference]: Start difference. First operand 520 states and 790 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 13:54:14,440 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:54:16,303 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:54:18,323 WARN L534 Checker$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 13:54:18,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:54:18,778 INFO L93 Difference]: Finished difference Result 1084 states and 1653 transitions. [2022-03-19 13:54:18,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 13:54:18,778 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 148 [2022-03-19 13:54:18,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:54:18,780 INFO L225 Difference]: With dead ends: 1084 [2022-03-19 13:54:18,780 INFO L226 Difference]: Without dead ends: 590 [2022-03-19 13:54:18,781 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 13:54:18,782 INFO L912 BasicCegarLoop]: 155 mSDtfsCounter, 137 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 51 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-03-19 13:54:18,782 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 436 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 486 Invalid, 1 Unknown, 0 Unchecked, 5.5s Time] [2022-03-19 13:54:18,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2022-03-19 13:54:18,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 520. [2022-03-19 13:54:18,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 515 states have (on average 1.5106796116504855) internal successors, (778), 515 states have internal predecessors, (778), 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 13:54:18,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 782 transitions. [2022-03-19 13:54:18,809 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 782 transitions. Word has length 148 [2022-03-19 13:54:18,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:54:18,810 INFO L478 AbstractCegarLoop]: Abstraction has 520 states and 782 transitions. [2022-03-19 13:54:18,810 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 13:54:18,810 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 782 transitions. [2022-03-19 13:54:18,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-03-19 13:54:18,811 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:54:18,811 INFO L500 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1] [2022-03-19 13:54:18,811 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-03-19 13:54:18,811 INFO L403 AbstractCegarLoop]: === Iteration 31 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:54:18,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:54:18,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1059379048, now seen corresponding path program 1 times [2022-03-19 13:54:18,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:54:18,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1986294226] [2022-03-19 13:54:18,825 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-19 13:54:18,825 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:54:18,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1059379048, now seen corresponding path program 2 times [2022-03-19 13:54:18,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:54:18,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304134822] [2022-03-19 13:54:18,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:54:18,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:54:18,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:54:18,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:54:18,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:54:18,909 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-03-19 13:54:18,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:54:18,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304134822] [2022-03-19 13:54:18,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304134822] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:54:18,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:54:18,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-19 13:54:18,910 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:54:18,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1986294226] [2022-03-19 13:54:18,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1986294226] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:54:18,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:54:18,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-19 13:54:18,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272700675] [2022-03-19 13:54:18,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:54:18,910 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-19 13:54:18,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:54:18,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-19 13:54:18,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-19 13:54:18,911 INFO L87 Difference]: Start difference. First operand 520 states and 782 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 3 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 13:54:20,305 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:54:22,870 WARN L534 Checker$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 13:54:23,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:54:23,239 INFO L93 Difference]: Finished difference Result 1505 states and 2284 transitions. [2022-03-19 13:54:23,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-19 13:54:23,239 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 3 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 148 [2022-03-19 13:54:23,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:54:23,242 INFO L225 Difference]: With dead ends: 1505 [2022-03-19 13:54:23,242 INFO L226 Difference]: Without dead ends: 1011 [2022-03-19 13:54:23,243 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 13:54:23,244 INFO L912 BasicCegarLoop]: 262 mSDtfsCounter, 151 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 20 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-03-19 13:54:23,244 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 456 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 340 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2022-03-19 13:54:23,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2022-03-19 13:54:23,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 1011. [2022-03-19 13:54:23,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1011 states, 1006 states have (on average 1.5) internal successors, (1509), 1006 states have internal predecessors, (1509), 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 13:54:23,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 1513 transitions. [2022-03-19 13:54:23,298 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 1513 transitions. Word has length 148 [2022-03-19 13:54:23,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:54:23,299 INFO L478 AbstractCegarLoop]: Abstraction has 1011 states and 1513 transitions. [2022-03-19 13:54:23,299 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 3 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 13:54:23,299 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 1513 transitions. [2022-03-19 13:54:23,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-03-19 13:54:23,301 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:54:23,301 INFO L500 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1] [2022-03-19 13:54:23,301 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-03-19 13:54:23,301 INFO L403 AbstractCegarLoop]: === Iteration 32 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:54:23,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:54:23,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1368879574, now seen corresponding path program 1 times [2022-03-19 13:54:23,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:54:23,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [407468090] [2022-03-19 13:54:23,314 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-19 13:54:23,314 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:54:23,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1368879574, now seen corresponding path program 2 times [2022-03-19 13:54:23,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:54:23,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101331615] [2022-03-19 13:54:23,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:54:23,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:54:23,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:54:23,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:54:23,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:54:23,392 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-03-19 13:54:23,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:54:23,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101331615] [2022-03-19 13:54:23,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101331615] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:54:23,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:54:23,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-19 13:54:23,393 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:54:23,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [407468090] [2022-03-19 13:54:23,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [407468090] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:54:23,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:54:23,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-19 13:54:23,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342109066] [2022-03-19 13:54:23,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:54:23,393 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-19 13:54:23,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:54:23,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-19 13:54:23,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-19 13:54:23,394 INFO L87 Difference]: Start difference. First operand 1011 states and 1513 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 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 13:54:26,020 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:54:27,240 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:54:27,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:54:27,556 INFO L93 Difference]: Finished difference Result 2023 states and 3033 transitions. [2022-03-19 13:54:27,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-19 13:54:27,558 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 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 148 [2022-03-19 13:54:27,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:54:27,561 INFO L225 Difference]: With dead ends: 2023 [2022-03-19 13:54:27,561 INFO L226 Difference]: Without dead ends: 1038 [2022-03-19 13:54:27,562 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 13:54:27,563 INFO L912 BasicCegarLoop]: 241 mSDtfsCounter, 15 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-03-19 13:54:27,563 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 435 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 285 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2022-03-19 13:54:27,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2022-03-19 13:54:27,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1038. [2022-03-19 13:54:27,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1038 states, 1033 states have (on average 1.494675701839303) internal successors, (1544), 1033 states have internal predecessors, (1544), 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 13:54:27,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1038 states to 1038 states and 1548 transitions. [2022-03-19 13:54:27,619 INFO L78 Accepts]: Start accepts. Automaton has 1038 states and 1548 transitions. Word has length 148 [2022-03-19 13:54:27,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:54:27,619 INFO L478 AbstractCegarLoop]: Abstraction has 1038 states and 1548 transitions. [2022-03-19 13:54:27,619 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 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 13:54:27,619 INFO L276 IsEmpty]: Start isEmpty. Operand 1038 states and 1548 transitions. [2022-03-19 13:54:27,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-03-19 13:54:27,621 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:54:27,621 INFO L500 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1] [2022-03-19 13:54:27,621 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-03-19 13:54:27,621 INFO L403 AbstractCegarLoop]: === Iteration 33 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:54:27,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:54:27,622 INFO L85 PathProgramCache]: Analyzing trace with hash -681529324, now seen corresponding path program 1 times [2022-03-19 13:54:27,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:54:27,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [152854818] [2022-03-19 13:54:27,636 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-19 13:54:27,636 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:54:27,636 INFO L85 PathProgramCache]: Analyzing trace with hash -681529324, now seen corresponding path program 2 times [2022-03-19 13:54:27,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:54:27,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106741771] [2022-03-19 13:54:27,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:54:27,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:54:27,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:54:27,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:54:27,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:54:27,719 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-03-19 13:54:27,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:54:27,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106741771] [2022-03-19 13:54:27,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106741771] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:54:27,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:54:27,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-19 13:54:27,719 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:54:27,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [152854818] [2022-03-19 13:54:27,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [152854818] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:54:27,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:54:27,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-19 13:54:27,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620893839] [2022-03-19 13:54:27,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:54:27,720 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-19 13:54:27,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:54:27,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-19 13:54:27,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-19 13:54:27,720 INFO L87 Difference]: Start difference. First operand 1038 states and 1548 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 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 13:54:29,537 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:54:31,567 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:54:33,588 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 13:54:33,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:54:33,908 INFO L93 Difference]: Finished difference Result 2052 states and 3069 transitions. [2022-03-19 13:54:33,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-19 13:54:33,909 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 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 148 [2022-03-19 13:54:33,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:54:33,911 INFO L225 Difference]: With dead ends: 2052 [2022-03-19 13:54:33,911 INFO L226 Difference]: Without dead ends: 1040 [2022-03-19 13:54:33,912 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 13:54:33,913 INFO L912 BasicCegarLoop]: 229 mSDtfsCounter, 4 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-03-19 13:54:33,913 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 414 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 270 Invalid, 2 Unknown, 0 Unchecked, 6.1s Time] [2022-03-19 13:54:33,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1040 states. [2022-03-19 13:54:33,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1040 to 1040. [2022-03-19 13:54:33,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1040 states, 1035 states have (on average 1.493719806763285) internal successors, (1546), 1035 states have internal predecessors, (1546), 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 13:54:33,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 1550 transitions. [2022-03-19 13:54:33,967 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 1550 transitions. Word has length 148 [2022-03-19 13:54:33,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:54:33,967 INFO L478 AbstractCegarLoop]: Abstraction has 1040 states and 1550 transitions. [2022-03-19 13:54:33,968 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 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 13:54:33,968 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 1550 transitions. [2022-03-19 13:54:33,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-03-19 13:54:33,969 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:54:33,969 INFO L500 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1] [2022-03-19 13:54:33,970 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-03-19 13:54:33,970 INFO L403 AbstractCegarLoop]: === Iteration 34 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:54:33,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:54:33,970 INFO L85 PathProgramCache]: Analyzing trace with hash 876192622, now seen corresponding path program 1 times [2022-03-19 13:54:33,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:54:33,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [78961131] [2022-03-19 13:54:33,983 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-19 13:54:33,983 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:54:33,984 INFO L85 PathProgramCache]: Analyzing trace with hash 876192622, now seen corresponding path program 2 times [2022-03-19 13:54:33,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:54:33,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395319662] [2022-03-19 13:54:33,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:54:33,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:54:34,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:54:34,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:54:34,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:54:34,081 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-03-19 13:54:34,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:54:34,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395319662] [2022-03-19 13:54:34,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395319662] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:54:34,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:54:34,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-19 13:54:34,081 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:54:34,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [78961131] [2022-03-19 13:54:34,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [78961131] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:54:34,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:54:34,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-19 13:54:34,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367646527] [2022-03-19 13:54:34,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:54:34,082 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-19 13:54:34,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:54:34,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-19 13:54:34,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-19 13:54:34,082 INFO L87 Difference]: Start difference. First operand 1040 states and 1550 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 3 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 13:54:36,091 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 13:54:36,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:54:36,637 INFO L93 Difference]: Finished difference Result 2543 states and 3818 transitions. [2022-03-19 13:54:36,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-19 13:54:36,637 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 3 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 150 [2022-03-19 13:54:36,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:54:36,641 INFO L225 Difference]: With dead ends: 2543 [2022-03-19 13:54:36,641 INFO L226 Difference]: Without dead ends: 1531 [2022-03-19 13:54:36,643 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 13:54:36,643 INFO L912 BasicCegarLoop]: 401 mSDtfsCounter, 156 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 20 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-19 13:54:36,643 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 595 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 477 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-03-19 13:54:36,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1531 states. [2022-03-19 13:54:36,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1531 to 1531. [2022-03-19 13:54:36,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1531 states, 1526 states have (on average 1.4921363040629096) internal successors, (2277), 1526 states have internal predecessors, (2277), 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 13:54:36,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1531 states to 1531 states and 2281 transitions. [2022-03-19 13:54:36,724 INFO L78 Accepts]: Start accepts. Automaton has 1531 states and 2281 transitions. Word has length 150 [2022-03-19 13:54:36,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:54:36,724 INFO L478 AbstractCegarLoop]: Abstraction has 1531 states and 2281 transitions. [2022-03-19 13:54:36,724 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 3 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 13:54:36,724 INFO L276 IsEmpty]: Start isEmpty. Operand 1531 states and 2281 transitions. [2022-03-19 13:54:36,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-03-19 13:54:36,726 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:54:36,726 INFO L500 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:54:36,726 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-03-19 13:54:36,727 INFO L403 AbstractCegarLoop]: === Iteration 35 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:54:36,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:54:36,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1363996308, now seen corresponding path program 1 times [2022-03-19 13:54:36,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:54:36,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1448594523] [2022-03-19 13:54:36,744 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-19 13:54:36,744 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:54:36,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1363996308, now seen corresponding path program 2 times [2022-03-19 13:54:36,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:54:36,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493791257] [2022-03-19 13:54:36,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:54:36,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:54:36,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:54:36,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:54:36,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:54:36,847 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-03-19 13:54:36,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:54:36,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493791257] [2022-03-19 13:54:36,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493791257] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:54:36,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:54:36,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:54:36,847 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:54:36,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1448594523] [2022-03-19 13:54:36,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1448594523] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:54:36,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:54:36,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:54:36,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851484465] [2022-03-19 13:54:36,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:54:36,848 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 13:54:36,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:54:36,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 13:54:36,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 13:54:36,848 INFO L87 Difference]: Start difference. First operand 1531 states and 2281 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 13:54:38,871 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 13:54:39,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:54:39,364 INFO L93 Difference]: Finished difference Result 3184 states and 4749 transitions. [2022-03-19 13:54:39,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 13:54:39,367 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 179 [2022-03-19 13:54:39,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:54:39,371 INFO L225 Difference]: With dead ends: 3184 [2022-03-19 13:54:39,371 INFO L226 Difference]: Without dead ends: 1681 [2022-03-19 13:54:39,373 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 13:54:39,374 INFO L912 BasicCegarLoop]: 262 mSDtfsCounter, 40 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 655 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-19 13:54:39,374 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 655 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 500 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-03-19 13:54:39,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1681 states. [2022-03-19 13:54:39,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1681 to 1615. [2022-03-19 13:54:39,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1615 states, 1610 states have (on average 1.4906832298136645) internal successors, (2400), 1610 states have internal predecessors, (2400), 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 13:54:39,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1615 states to 1615 states and 2404 transitions. [2022-03-19 13:54:39,462 INFO L78 Accepts]: Start accepts. Automaton has 1615 states and 2404 transitions. Word has length 179 [2022-03-19 13:54:39,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:54:39,462 INFO L478 AbstractCegarLoop]: Abstraction has 1615 states and 2404 transitions. [2022-03-19 13:54:39,462 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 13:54:39,463 INFO L276 IsEmpty]: Start isEmpty. Operand 1615 states and 2404 transitions. [2022-03-19 13:54:39,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-03-19 13:54:39,465 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:54:39,465 INFO L500 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:54:39,465 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-03-19 13:54:39,466 INFO L403 AbstractCegarLoop]: === Iteration 36 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:54:39,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:54:39,466 INFO L85 PathProgramCache]: Analyzing trace with hash 2095504041, now seen corresponding path program 1 times [2022-03-19 13:54:39,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:54:39,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1520810940] [2022-03-19 13:54:47,752 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:54:47,753 INFO L85 PathProgramCache]: Analyzing trace with hash 2095504041, now seen corresponding path program 2 times [2022-03-19 13:54:47,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:54:47,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001231713] [2022-03-19 13:54:47,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:54:47,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:54:47,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:54:47,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:54:47,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:54:47,893 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 246 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2022-03-19 13:54:47,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:54:47,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001231713] [2022-03-19 13:54:47,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001231713] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:54:47,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:54:47,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:54:47,894 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:54:47,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1520810940] [2022-03-19 13:54:47,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1520810940] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:54:47,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:54:47,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:54:47,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214063193] [2022-03-19 13:54:47,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:54:47,895 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 13:54:47,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:54:47,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 13:54:47,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 13:54:47,895 INFO L87 Difference]: Start difference. First operand 1615 states and 2404 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 13:54:49,171 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:54:51,297 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:54:53,263 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:54:53,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:54:53,841 INFO L93 Difference]: Finished difference Result 3407 states and 5050 transitions. [2022-03-19 13:54:53,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 13:54:53,842 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 202 [2022-03-19 13:54:53,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:54:53,847 INFO L225 Difference]: With dead ends: 3407 [2022-03-19 13:54:53,848 INFO L226 Difference]: Without dead ends: 1820 [2022-03-19 13:54:53,850 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 13:54:53,850 INFO L912 BasicCegarLoop]: 156 mSDtfsCounter, 136 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-03-19 13:54:53,850 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 438 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-03-19 13:54:53,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1820 states. [2022-03-19 13:54:53,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1820 to 1615. [2022-03-19 13:54:53,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1615 states, 1610 states have (on average 1.4739130434782608) internal successors, (2373), 1610 states have internal predecessors, (2373), 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 13:54:53,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1615 states to 1615 states and 2377 transitions. [2022-03-19 13:54:53,963 INFO L78 Accepts]: Start accepts. Automaton has 1615 states and 2377 transitions. Word has length 202 [2022-03-19 13:54:53,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:54:53,964 INFO L478 AbstractCegarLoop]: Abstraction has 1615 states and 2377 transitions. [2022-03-19 13:54:53,964 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 13:54:53,964 INFO L276 IsEmpty]: Start isEmpty. Operand 1615 states and 2377 transitions. [2022-03-19 13:54:53,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2022-03-19 13:54:53,966 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:54:53,967 INFO L500 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 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, 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 13:54:53,967 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-03-19 13:54:53,967 INFO L403 AbstractCegarLoop]: === Iteration 37 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:54:53,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:54:53,967 INFO L85 PathProgramCache]: Analyzing trace with hash -681149549, now seen corresponding path program 1 times [2022-03-19 13:54:53,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:54:53,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1876449970] [2022-03-19 13:54:53,990 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-19 13:54:53,990 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:54:53,990 INFO L85 PathProgramCache]: Analyzing trace with hash -681149549, now seen corresponding path program 2 times [2022-03-19 13:54:53,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:54:53,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059655033] [2022-03-19 13:54:53,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:54:53,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:54:54,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:54:54,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:54:54,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:54:54,109 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2022-03-19 13:54:54,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:54:54,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059655033] [2022-03-19 13:54:54,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059655033] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:54:54,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:54:54,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-19 13:54:54,110 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:54:54,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1876449970] [2022-03-19 13:54:54,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1876449970] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:54:54,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:54:54,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-19 13:54:54,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860762087] [2022-03-19 13:54:54,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:54:54,111 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-19 13:54:54,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:54:54,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-19 13:54:54,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-19 13:54:54,112 INFO L87 Difference]: Start difference. First operand 1615 states and 2377 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 3 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 13:54:55,989 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:54:58,007 WARN L534 Checker$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 13:54:58,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:54:58,448 INFO L93 Difference]: Finished difference Result 3722 states and 5505 transitions. [2022-03-19 13:54:58,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-19 13:54:58,448 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 3 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 203 [2022-03-19 13:54:58,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:54:58,454 INFO L225 Difference]: With dead ends: 3722 [2022-03-19 13:54:58,454 INFO L226 Difference]: Without dead ends: 2135 [2022-03-19 13:54:58,457 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 13:54:58,457 INFO L912 BasicCegarLoop]: 205 mSDtfsCounter, 161 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 23 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-03-19 13:54:58,457 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 390 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 290 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2022-03-19 13:54:58,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2135 states. [2022-03-19 13:54:58,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2135 to 2135. [2022-03-19 13:54:58,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2135 states, 2130 states have (on average 1.4755868544600939) internal successors, (3143), 2130 states have internal predecessors, (3143), 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 13:54:58,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2135 states to 2135 states and 3147 transitions. [2022-03-19 13:54:58,600 INFO L78 Accepts]: Start accepts. Automaton has 2135 states and 3147 transitions. Word has length 203 [2022-03-19 13:54:58,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:54:58,600 INFO L478 AbstractCegarLoop]: Abstraction has 2135 states and 3147 transitions. [2022-03-19 13:54:58,600 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 3 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 13:54:58,601 INFO L276 IsEmpty]: Start isEmpty. Operand 2135 states and 3147 transitions. [2022-03-19 13:54:58,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-03-19 13:54:58,603 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:54:58,603 INFO L500 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:54:58,604 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-03-19 13:54:58,604 INFO L403 AbstractCegarLoop]: === Iteration 38 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:54:58,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:54:58,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1744677605, now seen corresponding path program 1 times [2022-03-19 13:54:58,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:54:58,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1351549551] [2022-03-19 13:55:07,118 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:55:07,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1744677605, now seen corresponding path program 2 times [2022-03-19 13:55:07,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:55:07,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053522310] [2022-03-19 13:55:07,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:55:07,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:55:07,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:55:07,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:55:07,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:55:07,228 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 322 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2022-03-19 13:55:07,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:55:07,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053522310] [2022-03-19 13:55:07,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053522310] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:55:07,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:55:07,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:55:07,229 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:55:07,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1351549551] [2022-03-19 13:55:07,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1351549551] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:55:07,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:55:07,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:55:07,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909534435] [2022-03-19 13:55:07,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:55:07,230 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 13:55:07,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:55:07,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 13:55:07,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 13:55:07,231 INFO L87 Difference]: Start difference. First operand 2135 states and 3147 transitions. Second operand has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 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 13:55:08,788 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:55:10,812 WARN L534 Checker$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 13:55:12,843 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:55:14,866 WARN L534 Checker$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 13:55:15,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:55:15,423 INFO L93 Difference]: Finished difference Result 4311 states and 6363 transitions. [2022-03-19 13:55:15,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 13:55:15,423 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 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 233 [2022-03-19 13:55:15,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:55:15,430 INFO L225 Difference]: With dead ends: 4311 [2022-03-19 13:55:15,430 INFO L226 Difference]: Without dead ends: 2204 [2022-03-19 13:55:15,434 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 13:55:15,434 INFO L912 BasicCegarLoop]: 256 mSDtfsCounter, 38 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 5 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-03-19 13:55:15,434 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 643 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 485 Invalid, 3 Unknown, 0 Unchecked, 8.0s Time] [2022-03-19 13:55:15,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2204 states. [2022-03-19 13:55:15,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2204 to 2135. [2022-03-19 13:55:15,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2135 states, 2130 states have (on average 1.4737089201877935) internal successors, (3139), 2130 states have internal predecessors, (3139), 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 13:55:15,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2135 states to 2135 states and 3143 transitions. [2022-03-19 13:55:15,575 INFO L78 Accepts]: Start accepts. Automaton has 2135 states and 3143 transitions. Word has length 233 [2022-03-19 13:55:15,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:55:15,575 INFO L478 AbstractCegarLoop]: Abstraction has 2135 states and 3143 transitions. [2022-03-19 13:55:15,575 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 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 13:55:15,575 INFO L276 IsEmpty]: Start isEmpty. Operand 2135 states and 3143 transitions. [2022-03-19 13:55:15,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-03-19 13:55:15,578 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:55:15,578 INFO L500 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:55:15,578 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-03-19 13:55:15,578 INFO L403 AbstractCegarLoop]: === Iteration 39 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:55:15,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:55:15,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1564687898, now seen corresponding path program 1 times [2022-03-19 13:55:15,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:55:15,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2041820963] [2022-03-19 13:55:24,174 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:55:24,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1564687898, now seen corresponding path program 2 times [2022-03-19 13:55:24,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:55:24,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417160266] [2022-03-19 13:55:24,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:55:24,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:55:24,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:55:24,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:55:24,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:55:24,296 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 327 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2022-03-19 13:55:24,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:55:24,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417160266] [2022-03-19 13:55:24,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417160266] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:55:24,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:55:24,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:55:24,297 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:55:24,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2041820963] [2022-03-19 13:55:24,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2041820963] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:55:24,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:55:24,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:55:24,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251652026] [2022-03-19 13:55:24,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:55:24,297 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 13:55:24,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:55:24,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 13:55:24,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 13:55:24,298 INFO L87 Difference]: Start difference. First operand 2135 states and 3143 transitions. Second operand has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 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 13:55:26,374 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:55:28,391 WARN L534 Checker$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 13:55:28,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:55:28,912 INFO L93 Difference]: Finished difference Result 4295 states and 6333 transitions. [2022-03-19 13:55:28,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 13:55:28,913 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 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 234 [2022-03-19 13:55:28,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:55:28,918 INFO L225 Difference]: With dead ends: 4295 [2022-03-19 13:55:28,918 INFO L226 Difference]: Without dead ends: 2188 [2022-03-19 13:55:28,921 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 13:55:28,921 INFO L912 BasicCegarLoop]: 252 mSDtfsCounter, 32 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-03-19 13:55:28,922 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 635 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 472 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2022-03-19 13:55:28,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2188 states. [2022-03-19 13:55:29,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2188 to 2135. [2022-03-19 13:55:29,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2135 states, 2130 states have (on average 1.471830985915493) internal successors, (3135), 2130 states have internal predecessors, (3135), 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 13:55:29,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2135 states to 2135 states and 3139 transitions. [2022-03-19 13:55:29,066 INFO L78 Accepts]: Start accepts. Automaton has 2135 states and 3139 transitions. Word has length 234 [2022-03-19 13:55:29,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:55:29,066 INFO L478 AbstractCegarLoop]: Abstraction has 2135 states and 3139 transitions. [2022-03-19 13:55:29,066 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 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 13:55:29,066 INFO L276 IsEmpty]: Start isEmpty. Operand 2135 states and 3139 transitions. [2022-03-19 13:55:29,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-03-19 13:55:29,070 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:55:29,070 INFO L500 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:55:29,070 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-03-19 13:55:29,070 INFO L403 AbstractCegarLoop]: === Iteration 40 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:55:29,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:55:29,070 INFO L85 PathProgramCache]: Analyzing trace with hash -350585189, now seen corresponding path program 1 times [2022-03-19 13:55:29,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:55:29,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1206659806] [2022-03-19 13:55:29,094 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-19 13:55:29,094 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:55:29,094 INFO L85 PathProgramCache]: Analyzing trace with hash -350585189, now seen corresponding path program 2 times [2022-03-19 13:55:29,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:55:29,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699925654] [2022-03-19 13:55:29,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:55:29,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:55:29,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:55:29,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:55:29,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:55:29,209 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 374 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2022-03-19 13:55:29,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:55:29,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699925654] [2022-03-19 13:55:29,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699925654] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:55:29,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:55:29,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-19 13:55:29,209 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:55:29,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1206659806] [2022-03-19 13:55:29,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1206659806] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:55:29,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:55:29,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-19 13:55:29,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38623726] [2022-03-19 13:55:29,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:55:29,210 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-19 13:55:29,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:55:29,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-19 13:55:29,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-19 13:55:29,210 INFO L87 Difference]: Start difference. First operand 2135 states and 3139 transitions. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 3 states have internal predecessors, (134), 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 13:55:30,628 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:55:32,830 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:55:33,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:55:33,425 INFO L93 Difference]: Finished difference Result 4761 states and 7013 transitions. [2022-03-19 13:55:33,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-19 13:55:33,425 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 3 states have internal predecessors, (134), 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 236 [2022-03-19 13:55:33,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:55:33,432 INFO L225 Difference]: With dead ends: 4761 [2022-03-19 13:55:33,432 INFO L226 Difference]: Without dead ends: 2654 [2022-03-19 13:55:33,435 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 13:55:33,436 INFO L912 BasicCegarLoop]: 403 mSDtfsCounter, 158 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-03-19 13:55:33,436 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 597 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-03-19 13:55:33,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2654 states. [2022-03-19 13:55:33,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2654 to 2654. [2022-03-19 13:55:33,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2654 states, 2649 states have (on average 1.4707436768591922) internal successors, (3896), 2649 states have internal predecessors, (3896), 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 13:55:33,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2654 states to 2654 states and 3900 transitions. [2022-03-19 13:55:33,610 INFO L78 Accepts]: Start accepts. Automaton has 2654 states and 3900 transitions. Word has length 236 [2022-03-19 13:55:33,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:55:33,610 INFO L478 AbstractCegarLoop]: Abstraction has 2654 states and 3900 transitions. [2022-03-19 13:55:33,611 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 3 states have internal predecessors, (134), 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 13:55:33,611 INFO L276 IsEmpty]: Start isEmpty. Operand 2654 states and 3900 transitions. [2022-03-19 13:55:33,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2022-03-19 13:55:33,614 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:55:33,614 INFO L500 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:55:33,614 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-03-19 13:55:33,614 INFO L403 AbstractCegarLoop]: === Iteration 41 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:55:33,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:55:33,615 INFO L85 PathProgramCache]: Analyzing trace with hash -48256832, now seen corresponding path program 1 times [2022-03-19 13:55:33,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:55:33,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [618469850] [2022-03-19 13:55:33,640 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-19 13:55:33,640 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:55:33,640 INFO L85 PathProgramCache]: Analyzing trace with hash -48256832, now seen corresponding path program 2 times [2022-03-19 13:55:33,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:55:33,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384535556] [2022-03-19 13:55:33,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:55:33,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:55:33,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:55:33,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:55:33,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:55:33,797 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 271 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-03-19 13:55:33,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:55:33,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384535556] [2022-03-19 13:55:33,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384535556] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:55:33,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:55:33,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-19 13:55:33,798 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:55:33,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [618469850] [2022-03-19 13:55:33,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [618469850] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:55:33,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:55:33,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-19 13:55:33,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131427677] [2022-03-19 13:55:33,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:55:33,798 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-19 13:55:33,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:55:33,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-19 13:55:33,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-19 13:55:33,799 INFO L87 Difference]: Start difference. First operand 2654 states and 3900 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 3 states have internal predecessors, (152), 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 13:55:36,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:55:36,354 INFO L93 Difference]: Finished difference Result 5800 states and 8549 transitions. [2022-03-19 13:55:36,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-19 13:55:36,354 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 3 states have internal predecessors, (152), 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 242 [2022-03-19 13:55:36,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:55:36,359 INFO L225 Difference]: With dead ends: 5800 [2022-03-19 13:55:36,359 INFO L226 Difference]: Without dead ends: 3174 [2022-03-19 13:55:36,362 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 13:55:36,366 INFO L912 BasicCegarLoop]: 204 mSDtfsCounter, 167 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-03-19 13:55:36,366 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 389 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-03-19 13:55:36,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3174 states. [2022-03-19 13:55:36,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3174 to 3174. [2022-03-19 13:55:36,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3174 states, 3169 states have (on average 1.4720732092142632) internal successors, (4665), 3169 states have internal predecessors, (4665), 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 13:55:36,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3174 states to 3174 states and 4669 transitions. [2022-03-19 13:55:36,578 INFO L78 Accepts]: Start accepts. Automaton has 3174 states and 4669 transitions. Word has length 242 [2022-03-19 13:55:36,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:55:36,578 INFO L478 AbstractCegarLoop]: Abstraction has 3174 states and 4669 transitions. [2022-03-19 13:55:36,578 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 3 states have internal predecessors, (152), 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 13:55:36,578 INFO L276 IsEmpty]: Start isEmpty. Operand 3174 states and 4669 transitions. [2022-03-19 13:55:36,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2022-03-19 13:55:36,582 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:55:36,582 INFO L500 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:55:36,582 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-03-19 13:55:36,582 INFO L403 AbstractCegarLoop]: === Iteration 42 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:55:36,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:55:36,583 INFO L85 PathProgramCache]: Analyzing trace with hash 805139114, now seen corresponding path program 1 times [2022-03-19 13:55:36,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:55:36,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [40897445] [2022-03-19 13:55:36,608 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-19 13:55:36,608 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:55:36,608 INFO L85 PathProgramCache]: Analyzing trace with hash 805139114, now seen corresponding path program 2 times [2022-03-19 13:55:36,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:55:36,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756217477] [2022-03-19 13:55:36,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:55:36,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:55:36,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:55:36,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:55:36,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:55:36,722 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 271 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-03-19 13:55:36,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:55:36,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756217477] [2022-03-19 13:55:36,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756217477] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:55:36,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:55:36,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-19 13:55:36,722 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:55:36,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [40897445] [2022-03-19 13:55:36,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [40897445] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:55:36,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:55:36,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-19 13:55:36,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330076181] [2022-03-19 13:55:36,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:55:36,723 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-19 13:55:36,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:55:36,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-19 13:55:36,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-19 13:55:36,723 INFO L87 Difference]: Start difference. First operand 3174 states and 4669 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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 13:55:38,730 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 13:55:39,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:55:39,287 INFO L93 Difference]: Finished difference Result 6840 states and 10087 transitions. [2022-03-19 13:55:39,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-19 13:55:39,287 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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 13:55:39,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:55:39,293 INFO L225 Difference]: With dead ends: 6840 [2022-03-19 13:55:39,293 INFO L226 Difference]: Without dead ends: 3694 [2022-03-19 13:55:39,297 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 13:55:39,297 INFO L912 BasicCegarLoop]: 203 mSDtfsCounter, 168 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 25 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-03-19 13:55:39,297 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 388 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 288 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-03-19 13:55:39,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3694 states. [2022-03-19 13:55:39,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3694 to 3694. [2022-03-19 13:55:39,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3694 states, 3689 states have (on average 1.473298997018162) internal successors, (5435), 3689 states have internal predecessors, (5435), 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 13:55:39,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3694 states to 3694 states and 5439 transitions. [2022-03-19 13:55:39,562 INFO L78 Accepts]: Start accepts. Automaton has 3694 states and 5439 transitions. Word has length 244 [2022-03-19 13:55:39,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:55:39,562 INFO L478 AbstractCegarLoop]: Abstraction has 3694 states and 5439 transitions. [2022-03-19 13:55:39,562 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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 13:55:39,562 INFO L276 IsEmpty]: Start isEmpty. Operand 3694 states and 5439 transitions. [2022-03-19 13:55:39,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2022-03-19 13:55:39,568 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:55:39,568 INFO L500 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:55:39,568 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-03-19 13:55:39,568 INFO L403 AbstractCegarLoop]: === Iteration 43 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:55:39,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:55:39,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1286257332, now seen corresponding path program 1 times [2022-03-19 13:55:39,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:55:39,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [797625801] [2022-03-19 13:55:39,603 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-19 13:55:39,603 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:55:39,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1286257332, now seen corresponding path program 2 times [2022-03-19 13:55:39,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:55:39,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518777783] [2022-03-19 13:55:39,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:55:39,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:55:39,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:55:39,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:55:39,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:55:39,796 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 181 proven. 0 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2022-03-19 13:55:39,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:55:39,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518777783] [2022-03-19 13:55:39,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518777783] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:55:39,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:55:39,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-19 13:55:39,797 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:55:39,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [797625801] [2022-03-19 13:55:39,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [797625801] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:55:39,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:55:39,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-19 13:55:39,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105371944] [2022-03-19 13:55:39,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:55:39,798 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-19 13:55:39,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:55:39,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-19 13:55:39,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-19 13:55:39,799 INFO L87 Difference]: Start difference. First operand 3694 states and 5439 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 3 states have internal predecessors, (130), 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 13:55:41,158 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:55:43,864 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:55:44,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:55:44,656 INFO L93 Difference]: Finished difference Result 7873 states and 11616 transitions. [2022-03-19 13:55:44,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-19 13:55:44,657 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 3 states have internal predecessors, (130), 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 276 [2022-03-19 13:55:44,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:55:44,664 INFO L225 Difference]: With dead ends: 7873 [2022-03-19 13:55:44,665 INFO L226 Difference]: Without dead ends: 4207 [2022-03-19 13:55:44,671 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 13:55:44,672 INFO L912 BasicCegarLoop]: 400 mSDtfsCounter, 150 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-03-19 13:55:44,672 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 594 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-03-19 13:55:44,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4207 states. [2022-03-19 13:55:44,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4207 to 4207. [2022-03-19 13:55:44,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4207 states, 4202 states have (on average 1.4728700618752975) internal successors, (6189), 4202 states have internal predecessors, (6189), 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 13:55:44,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4207 states to 4207 states and 6193 transitions. [2022-03-19 13:55:44,983 INFO L78 Accepts]: Start accepts. Automaton has 4207 states and 6193 transitions. Word has length 276 [2022-03-19 13:55:44,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:55:44,983 INFO L478 AbstractCegarLoop]: Abstraction has 4207 states and 6193 transitions. [2022-03-19 13:55:44,983 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 3 states have internal predecessors, (130), 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 13:55:44,983 INFO L276 IsEmpty]: Start isEmpty. Operand 4207 states and 6193 transitions. [2022-03-19 13:55:44,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2022-03-19 13:55:44,989 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:55:44,989 INFO L500 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:55:44,989 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-03-19 13:55:44,990 INFO L403 AbstractCegarLoop]: === Iteration 44 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:55:44,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:55:44,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1534403826, now seen corresponding path program 1 times [2022-03-19 13:55:44,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:55:44,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1381816832] [2022-03-19 13:55:45,028 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-19 13:55:45,028 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:55:45,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1534403826, now seen corresponding path program 2 times [2022-03-19 13:55:45,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:55:45,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056793576] [2022-03-19 13:55:45,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:55:45,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:55:45,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:55:45,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:55:45,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:55:45,150 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 330 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-03-19 13:55:45,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:55:45,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056793576] [2022-03-19 13:55:45,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056793576] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:55:45,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:55:45,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-19 13:55:45,150 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:55:45,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1381816832] [2022-03-19 13:55:45,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1381816832] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:55:45,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:55:45,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-19 13:55:45,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312761309] [2022-03-19 13:55:45,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:55:45,151 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-19 13:55:45,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:55:45,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-19 13:55:45,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-19 13:55:45,151 INFO L87 Difference]: Start difference. First operand 4207 states and 6193 transitions. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 3 states have internal predecessors, (159), 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 13:55:46,593 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:55:48,617 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 13:55:50,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:55:50,334 INFO L93 Difference]: Finished difference Result 8873 states and 13087 transitions. [2022-03-19 13:55:50,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-19 13:55:50,334 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 3 states have internal predecessors, (159), 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 276 [2022-03-19 13:55:50,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:55:50,341 INFO L225 Difference]: With dead ends: 8873 [2022-03-19 13:55:50,342 INFO L226 Difference]: Without dead ends: 4694 [2022-03-19 13:55:50,346 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 13:55:50,347 INFO L912 BasicCegarLoop]: 403 mSDtfsCounter, 158 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 20 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-03-19 13:55:50,347 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 597 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 481 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2022-03-19 13:55:50,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4694 states. [2022-03-19 13:55:50,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4694 to 4694. [2022-03-19 13:55:50,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4694 states, 4689 states have (on average 1.472168905950096) internal successors, (6903), 4689 states have internal predecessors, (6903), 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 13:55:50,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4694 states to 4694 states and 6907 transitions. [2022-03-19 13:55:50,660 INFO L78 Accepts]: Start accepts. Automaton has 4694 states and 6907 transitions. Word has length 276 [2022-03-19 13:55:50,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:55:50,660 INFO L478 AbstractCegarLoop]: Abstraction has 4694 states and 6907 transitions. [2022-03-19 13:55:50,661 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 3 states have internal predecessors, (159), 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 13:55:50,661 INFO L276 IsEmpty]: Start isEmpty. Operand 4694 states and 6907 transitions. [2022-03-19 13:55:50,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2022-03-19 13:55:50,667 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:55:50,667 INFO L500 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 9, 9, 8, 8, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:55:50,667 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-03-19 13:55:50,667 INFO L403 AbstractCegarLoop]: === Iteration 45 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:55:50,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:55:50,671 INFO L85 PathProgramCache]: Analyzing trace with hash 2131522909, now seen corresponding path program 1 times [2022-03-19 13:55:50,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:55:50,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1906059236] [2022-03-19 13:55:57,216 WARN L232 SmtUtils]: Spent 6.54s on a formula simplification. DAG size of input: 277 DAG size of output: 223 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-19 13:56:09,642 WARN L232 SmtUtils]: Spent 5.18s on a formula simplification. DAG size of input: 279 DAG size of output: 225 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-19 13:56:16,232 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:56:16,233 INFO L85 PathProgramCache]: Analyzing trace with hash 2131522909, now seen corresponding path program 2 times [2022-03-19 13:56:16,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:56:16,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856520177] [2022-03-19 13:56:16,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:56:16,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:56:16,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:56:16,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:56:16,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:56:16,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1161 backedges. 434 proven. 0 refuted. 0 times theorem prover too weak. 727 trivial. 0 not checked. [2022-03-19 13:56:16,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:56:16,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856520177] [2022-03-19 13:56:16,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856520177] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:56:16,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:56:16,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-19 13:56:16,382 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:56:16,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1906059236] [2022-03-19 13:56:16,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1906059236] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:56:16,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:56:16,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-19 13:56:16,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557004154] [2022-03-19 13:56:16,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:56:16,383 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-19 13:56:16,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:56:16,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-19 13:56:16,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-19 13:56:16,383 INFO L87 Difference]: Start difference. First operand 4694 states and 6907 transitions. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 3 states have internal predecessors, (142), 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 13:56:19,150 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 13:56:21,177 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:56:21,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:56:21,842 INFO L93 Difference]: Finished difference Result 9880 states and 14563 transitions. [2022-03-19 13:56:21,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-19 13:56:21,843 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 3 states have internal predecessors, (142), 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 351 [2022-03-19 13:56:21,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:56:21,851 INFO L225 Difference]: With dead ends: 9880 [2022-03-19 13:56:21,851 INFO L226 Difference]: Without dead ends: 5214 [2022-03-19 13:56:21,858 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 13:56:21,858 INFO L912 BasicCegarLoop]: 200 mSDtfsCounter, 158 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 28 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-03-19 13:56:21,858 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 385 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 289 Invalid, 2 Unknown, 0 Unchecked, 5.1s Time] [2022-03-19 13:56:21,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5214 states. [2022-03-19 13:56:22,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5214 to 5214. [2022-03-19 13:56:22,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5214 states, 5209 states have (on average 1.4736033787675178) internal successors, (7676), 5209 states have internal predecessors, (7676), 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 13:56:22,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5214 states to 5214 states and 7680 transitions. [2022-03-19 13:56:22,243 INFO L78 Accepts]: Start accepts. Automaton has 5214 states and 7680 transitions. Word has length 351 [2022-03-19 13:56:22,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:56:22,243 INFO L478 AbstractCegarLoop]: Abstraction has 5214 states and 7680 transitions. [2022-03-19 13:56:22,243 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 3 states have internal predecessors, (142), 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 13:56:22,243 INFO L276 IsEmpty]: Start isEmpty. Operand 5214 states and 7680 transitions. [2022-03-19 13:56:22,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2022-03-19 13:56:22,251 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:56:22,251 INFO L500 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:56:22,252 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-03-19 13:56:22,252 INFO L403 AbstractCegarLoop]: === Iteration 46 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:56:22,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:56:22,252 INFO L85 PathProgramCache]: Analyzing trace with hash -2032087717, now seen corresponding path program 1 times [2022-03-19 13:56:22,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:56:22,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [73130122] [2022-03-19 13:56:29,033 WARN L232 SmtUtils]: Spent 6.78s on a formula simplification. DAG size of input: 277 DAG size of output: 223 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-19 13:56:43,818 WARN L232 SmtUtils]: Spent 5.44s on a formula simplification. DAG size of input: 279 DAG size of output: 225 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-19 13:56:51,828 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:56:51,829 INFO L85 PathProgramCache]: Analyzing trace with hash -2032087717, now seen corresponding path program 2 times [2022-03-19 13:56:51,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:56:51,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416578131] [2022-03-19 13:56:51,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:56:51,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:56:51,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:56:51,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:56:51,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:56:51,999 INFO L134 CoverageAnalysis]: Checked inductivity of 1443 backedges. 501 proven. 0 refuted. 0 times theorem prover too weak. 942 trivial. 0 not checked. [2022-03-19 13:56:51,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:56:51,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416578131] [2022-03-19 13:56:51,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416578131] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:56:51,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:56:51,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-19 13:56:52,000 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:56:52,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [73130122] [2022-03-19 13:56:52,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [73130122] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:56:52,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:56:52,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-19 13:56:52,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821792574] [2022-03-19 13:56:52,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:56:52,000 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-19 13:56:52,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:56:52,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-19 13:56:52,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-19 13:56:52,001 INFO L87 Difference]: Start difference. First operand 5214 states and 7680 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 3 states have internal predecessors, (150), 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 13:56:53,337 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:56:55,358 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:56:57,131 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:56:57,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:56:57,845 INFO L93 Difference]: Finished difference Result 10920 states and 16109 transitions. [2022-03-19 13:56:57,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-19 13:56:57,845 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 3 states have internal predecessors, (150), 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 392 [2022-03-19 13:56:57,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:56:57,852 INFO L225 Difference]: With dead ends: 10920 [2022-03-19 13:56:57,852 INFO L226 Difference]: Without dead ends: 5734 [2022-03-19 13:56:57,863 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 13:56:57,863 INFO L912 BasicCegarLoop]: 199 mSDtfsCounter, 159 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-03-19 13:56:57,863 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 384 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 290 Invalid, 1 Unknown, 0 Unchecked, 5.4s Time] [2022-03-19 13:56:57,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5734 states. [2022-03-19 13:56:58,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5734 to 5734. [2022-03-19 13:56:58,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5734 states, 5729 states have (on average 1.4749519986035957) internal successors, (8450), 5729 states have internal predecessors, (8450), 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 13:56:58,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5734 states to 5734 states and 8454 transitions. [2022-03-19 13:56:58,320 INFO L78 Accepts]: Start accepts. Automaton has 5734 states and 8454 transitions. Word has length 392 [2022-03-19 13:56:58,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:56:58,320 INFO L478 AbstractCegarLoop]: Abstraction has 5734 states and 8454 transitions. [2022-03-19 13:56:58,321 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 3 states have internal predecessors, (150), 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 13:56:58,321 INFO L276 IsEmpty]: Start isEmpty. Operand 5734 states and 8454 transitions. [2022-03-19 13:56:58,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2022-03-19 13:56:58,329 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:56:58,329 INFO L500 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 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, 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 13:56:58,330 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-03-19 13:56:58,330 INFO L403 AbstractCegarLoop]: === Iteration 47 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:56:58,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:56:58,330 INFO L85 PathProgramCache]: Analyzing trace with hash 2031073003, now seen corresponding path program 1 times [2022-03-19 13:56:58,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:56:58,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1713243846] [2022-03-19 13:56:58,385 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-19 13:56:58,385 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:56:58,385 INFO L85 PathProgramCache]: Analyzing trace with hash 2031073003, now seen corresponding path program 2 times [2022-03-19 13:56:58,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:56:58,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375838044] [2022-03-19 13:56:58,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:56:58,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:56:58,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:56:58,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:56:58,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:56:58,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 285 proven. 0 refuted. 0 times theorem prover too weak. 1160 trivial. 0 not checked. [2022-03-19 13:56:58,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:56:58,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375838044] [2022-03-19 13:56:58,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375838044] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:56:58,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:56:58,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-19 13:56:58,543 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:56:58,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1713243846] [2022-03-19 13:56:58,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1713243846] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:56:58,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:56:58,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-19 13:56:58,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958414148] [2022-03-19 13:56:58,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:56:58,544 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-19 13:56:58,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:56:58,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-19 13:56:58,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-19 13:56:58,544 INFO L87 Difference]: Start difference. First operand 5734 states and 8454 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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 13:57:00,551 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 13:57:01,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:57:01,480 INFO L93 Difference]: Finished difference Result 11954 states and 17648 transitions. [2022-03-19 13:57:01,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-19 13:57:01,481 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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 399 [2022-03-19 13:57:01,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:57:01,490 INFO L225 Difference]: With dead ends: 11954 [2022-03-19 13:57:01,490 INFO L226 Difference]: Without dead ends: 6248 [2022-03-19 13:57:01,500 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 13:57:01,501 INFO L912 BasicCegarLoop]: 400 mSDtfsCounter, 148 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-19 13:57:01,501 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 594 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 472 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-03-19 13:57:01,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6248 states. [2022-03-19 13:57:01,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6248 to 6248. [2022-03-19 13:57:01,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6248 states, 6243 states have (on average 1.474451385551818) internal successors, (9205), 6243 states have internal predecessors, (9205), 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 13:57:01,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6248 states to 6248 states and 9209 transitions. [2022-03-19 13:57:01,970 INFO L78 Accepts]: Start accepts. Automaton has 6248 states and 9209 transitions. Word has length 399 [2022-03-19 13:57:01,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:57:01,970 INFO L478 AbstractCegarLoop]: Abstraction has 6248 states and 9209 transitions. [2022-03-19 13:57:01,970 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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 13:57:01,971 INFO L276 IsEmpty]: Start isEmpty. Operand 6248 states and 9209 transitions. [2022-03-19 13:57:01,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2022-03-19 13:57:01,981 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:57:01,981 INFO L500 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 12, 12, 11, 11, 10, 10, 9, 9, 9, 9, 9, 8, 8, 7, 7, 6, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:57:01,981 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-03-19 13:57:01,981 INFO L403 AbstractCegarLoop]: === Iteration 48 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:57:01,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:57:01,981 INFO L85 PathProgramCache]: Analyzing trace with hash 2048463644, now seen corresponding path program 1 times [2022-03-19 13:57:01,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:57:01,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [587658971] [2022-03-19 13:57:07,984 WARN L232 SmtUtils]: Spent 6.00s on a formula simplification. DAG size of input: 277 DAG size of output: 223 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-19 13:57:33,718 WARN L232 SmtUtils]: Spent 5.38s on a formula simplification. DAG size of input: 279 DAG size of output: 225 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-19 13:57:37,464 ERROR L250 FreeRefinementEngine]: Caught unknown exception: Undeclared function symbol (* (Array Int (Array Int Int)) Int) [2022-03-19 13:57:37,464 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-03-19 13:57:37,465 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Undeclared function symbol (* (Array Int (Array Int Int)) Int) at de.uni_freiburg.informatik.ultimate.logic.Theory.term(Theory.java:1615) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.term(NoopScript.java:401) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.term(NoopScript.java:392) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.term(WrapperScript.java:249) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.term(WrapperScript.java:249) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.mul(SmtUtils.java:597) at de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.qvasr.QvasrUtils.matrixVectorMultiplicationWithVariables(QvasrUtils.java:226) at de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.qvasr.QvasrSummarizer.intVasrAbstractionToFormula(QvasrSummarizer.java:177) at de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.qvasr.QvasrSummarizer.summarizeLoop(QvasrSummarizer.java:140) at de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.qvasr.QvasrLoopSummarization.getQvasrAcceleration(QvasrLoopSummarization.java:87) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.loopaccelerator.AcceleratorQvasr.accelerateLoop(AcceleratorQvasr.java:91) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolationCore.accelerateNestedLoops(AcceleratedInterpolationCore.java:474) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolationCore.acceleratedInterpolationCoreIsCorrect(AcceleratedInterpolationCore.java:230) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:190) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleAcceleratedInterpolation.construct(IpTcStrategyModuleAcceleratedInterpolation.java:80) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:349) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:331) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:304) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:264) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:156) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-03-19 13:57:37,469 INFO L158 Benchmark]: Toolchain (without parser) took 370159.93ms. Allocated memory was 229.6MB in the beginning and 438.3MB in the end (delta: 208.7MB). Free memory was 176.4MB in the beginning and 127.8MB in the end (delta: 48.6MB). Peak memory consumption was 335.0MB. Max. memory is 8.0GB. [2022-03-19 13:57:37,469 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 229.6MB. Free memory is still 195.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-19 13:57:37,469 INFO L158 Benchmark]: CACSL2BoogieTranslator took 402.13ms. Allocated memory was 229.6MB in the beginning and 364.9MB in the end (delta: 135.3MB). Free memory was 176.2MB in the beginning and 318.8MB in the end (delta: -142.5MB). Peak memory consumption was 9.8MB. Max. memory is 8.0GB. [2022-03-19 13:57:37,469 INFO L158 Benchmark]: Boogie Preprocessor took 108.31ms. Allocated memory is still 364.9MB. Free memory was 318.8MB in the beginning and 311.4MB in the end (delta: 7.3MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2022-03-19 13:57:37,469 INFO L158 Benchmark]: RCFGBuilder took 1543.46ms. Allocated memory is still 364.9MB. Free memory was 311.4MB in the beginning and 231.7MB in the end (delta: 79.7MB). Peak memory consumption was 79.7MB. Max. memory is 8.0GB. [2022-03-19 13:57:37,469 INFO L158 Benchmark]: TraceAbstraction took 368100.56ms. Allocated memory was 364.9MB in the beginning and 438.3MB in the end (delta: 73.4MB). Free memory was 231.2MB in the beginning and 127.8MB in the end (delta: 103.4MB). Peak memory consumption was 255.9MB. Max. memory is 8.0GB. [2022-03-19 13:57:37,470 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 229.6MB. Free memory is still 195.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 402.13ms. Allocated memory was 229.6MB in the beginning and 364.9MB in the end (delta: 135.3MB). Free memory was 176.2MB in the beginning and 318.8MB in the end (delta: -142.5MB). Peak memory consumption was 9.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 108.31ms. Allocated memory is still 364.9MB. Free memory was 318.8MB in the beginning and 311.4MB in the end (delta: 7.3MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * RCFGBuilder took 1543.46ms. Allocated memory is still 364.9MB. Free memory was 311.4MB in the beginning and 231.7MB in the end (delta: 79.7MB). Peak memory consumption was 79.7MB. Max. memory is 8.0GB. * TraceAbstraction took 368100.56ms. Allocated memory was 364.9MB in the beginning and 438.3MB in the end (delta: 73.4MB). Free memory was 231.2MB in the beginning and 127.8MB in the end (delta: 103.4MB). Peak memory consumption was 255.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Undeclared function symbol (* (Array Int (Array Int Int)) Int) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Undeclared function symbol (* (Array Int (Array Int Int)) Int): de.uni_freiburg.informatik.ultimate.logic.Theory.term(Theory.java:1615) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-03-19 13:57:37,492 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...