/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.06.i.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-21 00:07:07,765 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-21 00:07:07,766 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-21 00:07:07,797 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-21 00:07:07,814 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-21 00:07:07,820 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-21 00:07:07,821 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-21 00:07:07,821 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-21 00:07:07,822 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-21 00:07:07,823 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-21 00:07:07,824 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-21 00:07:07,825 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-21 00:07:07,826 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-21 00:07:07,830 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-21 00:07:07,831 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-21 00:07:07,833 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-21 00:07:07,834 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-21 00:07:07,843 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-21 00:07:07,849 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-21 00:07:07,850 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-21 00:07:07,857 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-21 00:07:07,857 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-03-21 00:07:07,868 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-21 00:07:07,868 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-21 00:07:07,869 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-21 00:07:07,869 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-21 00:07:07,870 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-21 00:07:07,870 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-21 00:07:07,870 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-21 00:07:07,870 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-21 00:07:07,870 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-21 00:07:07,870 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-21 00:07:07,870 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-21 00:07:07,870 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-21 00:07:07,871 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-21 00:07:07,871 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-21 00:07:07,871 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-21 00:07:07,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-21 00:07:07,871 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-21 00:07:07,871 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-21 00:07:07,871 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-03-21 00:07:07,871 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-03-21 00:07:07,872 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-21 00:07:07,872 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-03-21 00:07:07,872 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-21 00:07:08,040 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-21 00:07:08,058 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-21 00:07:08,060 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-21 00:07:08,061 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-21 00:07:08,061 INFO L275 PluginConnector]: CDTParser initialized [2022-03-21 00:07:08,062 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/openssl/s3_srvr.blast.06.i.cil-2.c [2022-03-21 00:07:08,104 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1adf674f/42e355ad41a343649df7c73810818041/FLAG0af7e64cc [2022-03-21 00:07:08,606 INFO L306 CDTParser]: Found 1 translation units. [2022-03-21 00:07:08,607 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/openssl/s3_srvr.blast.06.i.cil-2.c [2022-03-21 00:07:08,646 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1adf674f/42e355ad41a343649df7c73810818041/FLAG0af7e64cc [2022-03-21 00:07:09,132 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1adf674f/42e355ad41a343649df7c73810818041 [2022-03-21 00:07:09,134 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-21 00:07:09,136 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-21 00:07:09,137 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-21 00:07:09,137 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-21 00:07:09,139 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-21 00:07:09,140 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.03 12:07:09" (1/1) ... [2022-03-21 00:07:09,140 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bb49706 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.03 12:07:09, skipping insertion in model container [2022-03-21 00:07:09,141 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.03 12:07:09" (1/1) ... [2022-03-21 00:07:09,147 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-21 00:07:09,204 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-21 00:07:09,564 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.06.i.cil-2.c[78808,78821] [2022-03-21 00:07:09,572 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-21 00:07:09,581 INFO L203 MainTranslator]: Completed pre-run [2022-03-21 00:07:09,670 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.06.i.cil-2.c[78808,78821] [2022-03-21 00:07:09,673 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-21 00:07:09,698 INFO L208 MainTranslator]: Completed translation [2022-03-21 00:07:09,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.03 12:07:09 WrapperNode [2022-03-21 00:07:09,699 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-21 00:07:09,699 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-21 00:07:09,699 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-21 00:07:09,700 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-21 00:07:09,709 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.03 12:07:09" (1/1) ... [2022-03-21 00:07:09,710 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.03 12:07:09" (1/1) ... [2022-03-21 00:07:09,740 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.03 12:07:09" (1/1) ... [2022-03-21 00:07:09,740 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.03 12:07:09" (1/1) ... [2022-03-21 00:07:09,796 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.03 12:07:09" (1/1) ... [2022-03-21 00:07:09,812 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.03 12:07:09" (1/1) ... [2022-03-21 00:07:09,815 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.03 12:07:09" (1/1) ... [2022-03-21 00:07:09,820 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-21 00:07:09,821 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-21 00:07:09,821 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-21 00:07:09,821 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-21 00:07:09,836 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.03 12:07:09" (1/1) ... [2022-03-21 00:07:09,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-21 00:07:09,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:07:09,864 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) [2022-03-21 00:07:09,891 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 [2022-03-21 00:07:09,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-21 00:07:09,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-21 00:07:09,905 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-21 00:07:09,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_get_server_method [2022-03-21 00:07:09,906 INFO L138 BoogieDeclarations]: Found implementation of procedure SSLv3_server_method [2022-03-21 00:07:09,906 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-21 00:07:09,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2022-03-21 00:07:09,906 INFO L138 BoogieDeclarations]: Found implementation of procedure sslv3_base_method [2022-03-21 00:07:09,906 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-03-21 00:07:09,906 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-03-21 00:07:09,906 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-21 00:07:09,906 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-21 00:07:09,907 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-21 00:07:09,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-21 00:07:09,907 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-03-21 00:07:09,909 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-03-21 00:07:09,909 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-21 00:07:09,909 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-03-21 00:07:09,909 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2022-03-21 00:07:09,909 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2022-03-21 00:07:09,909 INFO L130 BoogieDeclarations]: Found specification of procedure SSLv3_server_method [2022-03-21 00:07:09,909 INFO L130 BoogieDeclarations]: Found specification of procedure sslv3_base_method [2022-03-21 00:07:09,910 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2022-03-21 00:07:09,910 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_get_server_method [2022-03-21 00:07:09,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-03-21 00:07:09,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-03-21 00:07:09,910 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-21 00:07:09,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-03-21 00:07:09,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-21 00:07:09,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-03-21 00:07:09,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-21 00:07:09,910 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2022-03-21 00:07:09,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-03-21 00:07:09,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-21 00:07:09,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-21 00:07:09,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-21 00:07:09,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-03-21 00:07:09,911 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-03-21 00:07:09,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-03-21 00:07:09,911 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-03-21 00:07:09,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-21 00:07:10,083 INFO L234 CfgBuilder]: Building ICFG [2022-03-21 00:07:10,085 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-21 00:07:11,013 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-21 00:07:11,441 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2022-03-21 00:07:11,441 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2022-03-21 00:07:11,453 INFO L275 CfgBuilder]: Performing block encoding [2022-03-21 00:07:11,460 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-21 00:07:11,460 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-21 00:07:11,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.03 12:07:11 BoogieIcfgContainer [2022-03-21 00:07:11,462 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-21 00:07:11,463 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-21 00:07:11,463 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-21 00:07:11,466 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-21 00:07:11,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.03 12:07:09" (1/3) ... [2022-03-21 00:07:11,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@af78ccb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.03 12:07:11, skipping insertion in model container [2022-03-21 00:07:11,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.03 12:07:09" (2/3) ... [2022-03-21 00:07:11,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@af78ccb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.03 12:07:11, skipping insertion in model container [2022-03-21 00:07:11,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.03 12:07:11" (3/3) ... [2022-03-21 00:07:11,468 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.06.i.cil-2.c [2022-03-21 00:07:11,472 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-21 00:07:11,472 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-21 00:07:11,506 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-21 00:07:11,512 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 [2022-03-21 00:07:11,512 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-21 00:07:11,526 INFO L276 IsEmpty]: Start isEmpty. Operand has 170 states, 162 states have (on average 1.728395061728395) internal successors, (280), 163 states have internal predecessors, (280), 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) [2022-03-21 00:07:11,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-03-21 00:07:11,543 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:07:11,543 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:07:11,544 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:07:11,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:07:11,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1044787868, now seen corresponding path program 1 times [2022-03-21 00:07:11,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:07:11,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1790696682] [2022-03-21 00:07:11,571 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-21 00:07:11,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1044787868, now seen corresponding path program 2 times [2022-03-21 00:07:11,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:07:11,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976400565] [2022-03-21 00:07:11,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:07:11,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:07:11,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:12,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:07:12,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:12,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:07:12,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:07:12,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976400565] [2022-03-21 00:07:12,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976400565] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:07:12,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:07:12,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:07:12,112 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:07:12,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1790696682] [2022-03-21 00:07:12,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1790696682] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:07:12,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:07:12,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:07:12,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544034919] [2022-03-21 00:07:12,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:07:12,117 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-21 00:07:12,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:07:12,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-21 00:07:12,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-21 00:07:12,144 INFO L87 Difference]: Start difference. First operand has 170 states, 162 states have (on average 1.728395061728395) internal successors, (280), 163 states have internal predecessors, (280), 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 9.6) 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) [2022-03-21 00:07:14,759 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:07:16,779 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 [] [2022-03-21 00:07:17,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:07:17,698 INFO L93 Difference]: Finished difference Result 464 states and 794 transitions. [2022-03-21 00:07:17,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-21 00:07:17,722 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 [2022-03-21 00:07:17,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:07:17,733 INFO L225 Difference]: With dead ends: 464 [2022-03-21 00:07:17,733 INFO L226 Difference]: Without dead ends: 283 [2022-03-21 00:07:17,738 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-21 00:07:17,742 INFO L913 BasicCegarLoop]: 182 mSDtfsCounter, 174 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 63 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-03-21 00:07:17,743 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 535 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 559 Invalid, 1 Unknown, 0 Unchecked, 5.4s Time] [2022-03-21 00:07:17,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2022-03-21 00:07:17,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 194. [2022-03-21 00:07:17,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 189 states have (on average 1.6296296296296295) internal successors, (308), 189 states have internal predecessors, (308), 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) [2022-03-21 00:07:17,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 312 transitions. [2022-03-21 00:07:17,799 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 312 transitions. Word has length 52 [2022-03-21 00:07:17,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:07:17,800 INFO L478 AbstractCegarLoop]: Abstraction has 194 states and 312 transitions. [2022-03-21 00:07:17,800 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) [2022-03-21 00:07:17,800 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 312 transitions. [2022-03-21 00:07:17,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-03-21 00:07:17,802 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:07:17,802 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:07:17,803 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-21 00:07:17,803 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:07:17,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:07:17,805 INFO L85 PathProgramCache]: Analyzing trace with hash -125938628, now seen corresponding path program 1 times [2022-03-21 00:07:17,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:07:17,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1132637075] [2022-03-21 00:07:17,806 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-21 00:07:17,806 INFO L85 PathProgramCache]: Analyzing trace with hash -125938628, now seen corresponding path program 2 times [2022-03-21 00:07:17,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:07:17,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428412904] [2022-03-21 00:07:17,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:07:17,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:07:17,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:18,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:07:18,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:18,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:07:18,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:07:18,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428412904] [2022-03-21 00:07:18,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428412904] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:07:18,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:07:18,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:07:18,042 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:07:18,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1132637075] [2022-03-21 00:07:18,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1132637075] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:07:18,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:07:18,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:07:18,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094825887] [2022-03-21 00:07:18,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:07:18,044 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-21 00:07:18,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:07:18,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-21 00:07:18,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-21 00:07:18,045 INFO L87 Difference]: Start difference. First operand 194 states and 312 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-21 00:07:20,981 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:07:22,907 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:07:23,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:07:23,526 INFO L93 Difference]: Finished difference Result 501 states and 809 transitions. [2022-03-21 00:07:23,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-21 00:07:23,526 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (3), 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 53 [2022-03-21 00:07:23,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:07:23,529 INFO L225 Difference]: With dead ends: 501 [2022-03-21 00:07:23,529 INFO L226 Difference]: Without dead ends: 322 [2022-03-21 00:07:23,530 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-21 00:07:23,531 INFO L913 BasicCegarLoop]: 157 mSDtfsCounter, 141 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-03-21 00:07:23,532 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 446 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-03-21 00:07:23,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2022-03-21 00:07:23,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 234. [2022-03-21 00:07:23,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 229 states have (on average 1.668122270742358) internal successors, (382), 229 states have internal predecessors, (382), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-21 00:07:23,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 386 transitions. [2022-03-21 00:07:23,553 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 386 transitions. Word has length 53 [2022-03-21 00:07:23,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:07:23,553 INFO L478 AbstractCegarLoop]: Abstraction has 234 states and 386 transitions. [2022-03-21 00:07:23,553 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-21 00:07:23,554 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 386 transitions. [2022-03-21 00:07:23,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-03-21 00:07:23,556 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:07:23,556 INFO L499 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, 1] [2022-03-21 00:07:23,557 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-21 00:07:23,557 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:07:23,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:07:23,557 INFO L85 PathProgramCache]: Analyzing trace with hash 957181827, now seen corresponding path program 1 times [2022-03-21 00:07:23,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:07:23,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1598855674] [2022-03-21 00:07:23,570 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:07:23,570 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:07:23,570 INFO L85 PathProgramCache]: Analyzing trace with hash 957181827, now seen corresponding path program 2 times [2022-03-21 00:07:23,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:07:23,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876567129] [2022-03-21 00:07:23,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:07:23,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:07:23,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:23,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:07:23,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:23,733 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-03-21 00:07:23,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:07:23,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876567129] [2022-03-21 00:07:23,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876567129] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:07:23,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:07:23,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:07:23,734 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:07:23,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1598855674] [2022-03-21 00:07:23,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1598855674] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:07:23,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:07:23,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:07:23,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912979765] [2022-03-21 00:07:23,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:07:23,739 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-21 00:07:23,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:07:23,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-21 00:07:23,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-21 00:07:23,740 INFO L87 Difference]: Start difference. First operand 234 states and 386 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) [2022-03-21 00:07:24,792 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:07:26,810 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:07:28,833 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:07:30,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:07:30,043 INFO L93 Difference]: Finished difference Result 481 states and 794 transitions. [2022-03-21 00:07:30,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-21 00:07:30,044 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 81 [2022-03-21 00:07:30,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:07:30,045 INFO L225 Difference]: With dead ends: 481 [2022-03-21 00:07:30,046 INFO L226 Difference]: Without dead ends: 262 [2022-03-21 00:07:30,047 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-21 00:07:30,048 INFO L913 BasicCegarLoop]: 210 mSDtfsCounter, 22 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 10 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-03-21 00:07:30,048 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 553 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 388 Invalid, 2 Unknown, 0 Unchecked, 6.2s Time] [2022-03-21 00:07:30,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2022-03-21 00:07:30,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 245. [2022-03-21 00:07:30,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 240 states have (on average 1.6708333333333334) internal successors, (401), 240 states have internal predecessors, (401), 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) [2022-03-21 00:07:30,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 405 transitions. [2022-03-21 00:07:30,065 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 405 transitions. Word has length 81 [2022-03-21 00:07:30,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:07:30,065 INFO L478 AbstractCegarLoop]: Abstraction has 245 states and 405 transitions. [2022-03-21 00:07:30,066 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) [2022-03-21 00:07:30,066 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 405 transitions. [2022-03-21 00:07:30,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-03-21 00:07:30,068 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:07:30,069 INFO L499 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, 1] [2022-03-21 00:07:30,069 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-21 00:07:30,069 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:07:30,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:07:30,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1133534583, now seen corresponding path program 1 times [2022-03-21 00:07:30,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:07:30,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [995517955] [2022-03-21 00:07:30,080 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:07:30,081 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:07:30,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1133534583, now seen corresponding path program 2 times [2022-03-21 00:07:30,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:07:30,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670079208] [2022-03-21 00:07:30,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:07:30,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:07:30,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:30,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:07:30,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:30,250 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-03-21 00:07:30,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:07:30,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670079208] [2022-03-21 00:07:30,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670079208] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:07:30,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:07:30,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:07:30,251 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:07:30,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [995517955] [2022-03-21 00:07:30,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [995517955] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:07:30,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:07:30,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:07:30,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342480463] [2022-03-21 00:07:30,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:07:30,252 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-21 00:07:30,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:07:30,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-21 00:07:30,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-21 00:07:30,253 INFO L87 Difference]: Start difference. First operand 245 states and 405 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) [2022-03-21 00:07:32,989 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:07:34,974 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:07:37,004 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 [] [2022-03-21 00:07:37,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:07:37,482 INFO L93 Difference]: Finished difference Result 481 states and 793 transitions. [2022-03-21 00:07:37,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-21 00:07:37,482 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 [2022-03-21 00:07:37,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:07:37,484 INFO L225 Difference]: With dead ends: 481 [2022-03-21 00:07:37,484 INFO L226 Difference]: Without dead ends: 262 [2022-03-21 00:07:37,485 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-21 00:07:37,486 INFO L913 BasicCegarLoop]: 211 mSDtfsCounter, 24 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-03-21 00:07:37,486 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 555 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 387 Invalid, 1 Unknown, 0 Unchecked, 7.2s Time] [2022-03-21 00:07:37,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2022-03-21 00:07:37,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 245. [2022-03-21 00:07:37,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 240 states have (on average 1.6666666666666667) internal successors, (400), 240 states have internal predecessors, (400), 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) [2022-03-21 00:07:37,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 404 transitions. [2022-03-21 00:07:37,507 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 404 transitions. Word has length 94 [2022-03-21 00:07:37,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:07:37,508 INFO L478 AbstractCegarLoop]: Abstraction has 245 states and 404 transitions. [2022-03-21 00:07:37,508 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) [2022-03-21 00:07:37,508 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 404 transitions. [2022-03-21 00:07:37,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-03-21 00:07:37,511 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:07:37,517 INFO L499 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, 1] [2022-03-21 00:07:37,518 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-21 00:07:37,518 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:07:37,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:07:37,519 INFO L85 PathProgramCache]: Analyzing trace with hash 211420935, now seen corresponding path program 1 times [2022-03-21 00:07:37,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:07:37,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [728427711] [2022-03-21 00:07:37,538 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:07:37,539 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:07:37,539 INFO L85 PathProgramCache]: Analyzing trace with hash 211420935, now seen corresponding path program 2 times [2022-03-21 00:07:37,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:07:37,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167620682] [2022-03-21 00:07:37,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:07:37,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:07:37,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:37,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:07:37,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:37,700 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-03-21 00:07:37,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:07:37,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167620682] [2022-03-21 00:07:37,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167620682] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:07:37,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:07:37,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:07:37,705 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:07:37,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [728427711] [2022-03-21 00:07:37,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [728427711] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:07:37,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:07:37,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:07:37,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221935875] [2022-03-21 00:07:37,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:07:37,706 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-21 00:07:37,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:07:37,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-21 00:07:37,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-21 00:07:37,706 INFO L87 Difference]: Start difference. First operand 245 states and 404 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) [2022-03-21 00:07:40,562 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 [] [2022-03-21 00:07:42,428 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:07:43,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:07:43,744 INFO L93 Difference]: Finished difference Result 551 states and 899 transitions. [2022-03-21 00:07:43,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-21 00:07:43,745 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 [2022-03-21 00:07:43,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:07:43,747 INFO L225 Difference]: With dead ends: 551 [2022-03-21 00:07:43,747 INFO L226 Difference]: Without dead ends: 332 [2022-03-21 00:07:43,747 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-21 00:07:43,748 INFO L913 BasicCegarLoop]: 158 mSDtfsCounter, 169 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 61 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-03-21 00:07:43,748 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 448 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 514 Invalid, 1 Unknown, 0 Unchecked, 6.0s Time] [2022-03-21 00:07:43,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2022-03-21 00:07:43,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 245. [2022-03-21 00:07:43,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 240 states have (on average 1.6541666666666666) internal successors, (397), 240 states have internal predecessors, (397), 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) [2022-03-21 00:07:43,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 401 transitions. [2022-03-21 00:07:43,762 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 401 transitions. Word has length 95 [2022-03-21 00:07:43,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:07:43,762 INFO L478 AbstractCegarLoop]: Abstraction has 245 states and 401 transitions. [2022-03-21 00:07:43,762 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) [2022-03-21 00:07:43,762 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 401 transitions. [2022-03-21 00:07:43,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-03-21 00:07:43,764 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:07:43,765 INFO L499 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, 1] [2022-03-21 00:07:43,765 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-21 00:07:43,765 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:07:43,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:07:43,765 INFO L85 PathProgramCache]: Analyzing trace with hash -2146723853, now seen corresponding path program 1 times [2022-03-21 00:07:43,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:07:43,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1233829610] [2022-03-21 00:07:43,775 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:07:43,775 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:07:43,775 INFO L85 PathProgramCache]: Analyzing trace with hash -2146723853, now seen corresponding path program 2 times [2022-03-21 00:07:43,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:07:43,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800106845] [2022-03-21 00:07:43,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:07:43,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:07:43,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:43,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:07:43,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:43,894 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-03-21 00:07:43,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:07:43,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800106845] [2022-03-21 00:07:43,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800106845] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:07:43,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:07:43,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:07:43,895 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:07:43,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1233829610] [2022-03-21 00:07:43,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1233829610] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:07:43,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:07:43,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:07:43,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130407254] [2022-03-21 00:07:43,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:07:43,896 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-21 00:07:43,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:07:43,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-21 00:07:43,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-21 00:07:43,897 INFO L87 Difference]: Start difference. First operand 245 states and 401 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) [2022-03-21 00:07:45,975 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:07:47,997 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:07:50,030 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:07:50,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:07:50,497 INFO L93 Difference]: Finished difference Result 480 states and 786 transitions. [2022-03-21 00:07:50,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-21 00:07:50,497 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 [2022-03-21 00:07:50,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:07:50,499 INFO L225 Difference]: With dead ends: 480 [2022-03-21 00:07:50,499 INFO L226 Difference]: Without dead ends: 261 [2022-03-21 00:07:50,500 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-21 00:07:50,501 INFO L913 BasicCegarLoop]: 212 mSDtfsCounter, 26 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 9 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-03-21 00:07:50,501 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 557 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 384 Invalid, 2 Unknown, 0 Unchecked, 6.6s Time] [2022-03-21 00:07:50,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2022-03-21 00:07:50,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 245. [2022-03-21 00:07:50,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 240 states have (on average 1.65) internal successors, (396), 240 states have internal predecessors, (396), 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) [2022-03-21 00:07:50,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 400 transitions. [2022-03-21 00:07:50,512 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 400 transitions. Word has length 95 [2022-03-21 00:07:50,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:07:50,513 INFO L478 AbstractCegarLoop]: Abstraction has 245 states and 400 transitions. [2022-03-21 00:07:50,513 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) [2022-03-21 00:07:50,513 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 400 transitions. [2022-03-21 00:07:50,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-03-21 00:07:50,514 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:07:50,514 INFO L499 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, 1] [2022-03-21 00:07:50,514 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-21 00:07:50,514 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:07:50,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:07:50,515 INFO L85 PathProgramCache]: Analyzing trace with hash -150027876, now seen corresponding path program 1 times [2022-03-21 00:07:50,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:07:50,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [217903552] [2022-03-21 00:07:50,524 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:07:50,524 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:07:50,524 INFO L85 PathProgramCache]: Analyzing trace with hash -150027876, now seen corresponding path program 2 times [2022-03-21 00:07:50,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:07:50,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534111581] [2022-03-21 00:07:50,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:07:50,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:07:50,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:50,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:07:50,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:50,635 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-03-21 00:07:50,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:07:50,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534111581] [2022-03-21 00:07:50,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534111581] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:07:50,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:07:50,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:07:50,636 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:07:50,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [217903552] [2022-03-21 00:07:50,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [217903552] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:07:50,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:07:50,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:07:50,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608229] [2022-03-21 00:07:50,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:07:50,636 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-21 00:07:50,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:07:50,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-21 00:07:50,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-21 00:07:50,637 INFO L87 Difference]: Start difference. First operand 245 states and 400 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) [2022-03-21 00:07:51,795 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:07:53,590 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:07:55,616 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 [] [2022-03-21 00:07:56,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:07:56,056 INFO L93 Difference]: Finished difference Result 478 states and 783 transitions. [2022-03-21 00:07:56,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-21 00:07:56,056 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 [2022-03-21 00:07:56,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:07:56,058 INFO L225 Difference]: With dead ends: 478 [2022-03-21 00:07:56,058 INFO L226 Difference]: Without dead ends: 259 [2022-03-21 00:07:56,059 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-21 00:07:56,059 INFO L913 BasicCegarLoop]: 214 mSDtfsCounter, 20 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-03-21 00:07:56,060 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 561 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 381 Invalid, 1 Unknown, 0 Unchecked, 5.4s Time] [2022-03-21 00:07:56,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2022-03-21 00:07:56,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 245. [2022-03-21 00:07:56,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 240 states have (on average 1.6458333333333333) internal successors, (395), 240 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) [2022-03-21 00:07:56,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 399 transitions. [2022-03-21 00:07:56,071 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 399 transitions. Word has length 95 [2022-03-21 00:07:56,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:07:56,071 INFO L478 AbstractCegarLoop]: Abstraction has 245 states and 399 transitions. [2022-03-21 00:07:56,071 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) [2022-03-21 00:07:56,071 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 399 transitions. [2022-03-21 00:07:56,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-03-21 00:07:56,072 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:07:56,072 INFO L499 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, 1] [2022-03-21 00:07:56,072 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-21 00:07:56,072 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:07:56,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:07:56,073 INFO L85 PathProgramCache]: Analyzing trace with hash 518772539, now seen corresponding path program 1 times [2022-03-21 00:07:56,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:07:56,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1925536091] [2022-03-21 00:07:56,080 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:07:56,081 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:07:56,081 INFO L85 PathProgramCache]: Analyzing trace with hash 518772539, now seen corresponding path program 2 times [2022-03-21 00:07:56,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:07:56,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102216768] [2022-03-21 00:07:56,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:07:56,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:07:56,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:56,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:07:56,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:56,194 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-03-21 00:07:56,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:07:56,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102216768] [2022-03-21 00:07:56,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102216768] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:07:56,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:07:56,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:07:56,195 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:07:56,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1925536091] [2022-03-21 00:07:56,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1925536091] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:07:56,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:07:56,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:07:56,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224581738] [2022-03-21 00:07:56,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:07:56,196 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-21 00:07:56,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:07:56,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-21 00:07:56,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-21 00:07:56,196 INFO L87 Difference]: Start difference. First operand 245 states and 399 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) [2022-03-21 00:07:58,207 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 [] [2022-03-21 00:07:58,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:07:58,681 INFO L93 Difference]: Finished difference Result 477 states and 781 transitions. [2022-03-21 00:07:58,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-21 00:07:58,681 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 [2022-03-21 00:07:58,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:07:58,683 INFO L225 Difference]: With dead ends: 477 [2022-03-21 00:07:58,683 INFO L226 Difference]: Without dead ends: 258 [2022-03-21 00:07:58,683 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-21 00:07:58,684 INFO L913 BasicCegarLoop]: 215 mSDtfsCounter, 18 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-21 00:07:58,684 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 563 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 376 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-03-21 00:07:58,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2022-03-21 00:07:58,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 245. [2022-03-21 00:07:58,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 240 states have (on average 1.6416666666666666) internal successors, (394), 240 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) [2022-03-21 00:07:58,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 398 transitions. [2022-03-21 00:07:58,694 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 398 transitions. Word has length 95 [2022-03-21 00:07:58,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:07:58,695 INFO L478 AbstractCegarLoop]: Abstraction has 245 states and 398 transitions. [2022-03-21 00:07:58,695 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) [2022-03-21 00:07:58,695 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 398 transitions. [2022-03-21 00:07:58,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-21 00:07:58,696 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:07:58,696 INFO L499 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, 1] [2022-03-21 00:07:58,696 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-21 00:07:58,696 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:07:58,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:07:58,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1732356526, now seen corresponding path program 1 times [2022-03-21 00:07:58,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:07:58,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [459676645] [2022-03-21 00:07:58,706 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:07:58,706 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:07:58,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1732356526, now seen corresponding path program 2 times [2022-03-21 00:07:58,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:07:58,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122691830] [2022-03-21 00:07:58,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:07:58,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:07:58,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:58,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:07:58,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:58,843 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-03-21 00:07:58,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:07:58,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122691830] [2022-03-21 00:07:58,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122691830] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:07:58,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:07:58,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:07:58,843 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:07:58,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [459676645] [2022-03-21 00:07:58,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [459676645] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:07:58,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:07:58,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:07:58,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876756305] [2022-03-21 00:07:58,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:07:58,844 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-21 00:07:58,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:07:58,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-21 00:07:58,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-21 00:07:58,845 INFO L87 Difference]: Start difference. First operand 245 states and 398 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) [2022-03-21 00:08:00,855 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 [] [2022-03-21 00:08:01,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:08:01,305 INFO L93 Difference]: Finished difference Result 477 states and 780 transitions. [2022-03-21 00:08:01,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-21 00:08:01,306 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 [2022-03-21 00:08:01,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:08:01,307 INFO L225 Difference]: With dead ends: 477 [2022-03-21 00:08:01,307 INFO L226 Difference]: Without dead ends: 258 [2022-03-21 00:08:01,308 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-21 00:08:01,308 INFO L913 BasicCegarLoop]: 215 mSDtfsCounter, 22 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-21 00:08:01,309 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 563 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 376 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-03-21 00:08:01,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2022-03-21 00:08:01,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 245. [2022-03-21 00:08:01,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 240 states have (on average 1.6375) internal successors, (393), 240 states have internal predecessors, (393), 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) [2022-03-21 00:08:01,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 397 transitions. [2022-03-21 00:08:01,318 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 397 transitions. Word has length 96 [2022-03-21 00:08:01,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:08:01,318 INFO L478 AbstractCegarLoop]: Abstraction has 245 states and 397 transitions. [2022-03-21 00:08:01,319 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) [2022-03-21 00:08:01,319 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 397 transitions. [2022-03-21 00:08:01,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-03-21 00:08:01,320 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:08:01,320 INFO L499 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, 1] [2022-03-21 00:08:01,320 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-21 00:08:01,320 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:08:01,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:08:01,320 INFO L85 PathProgramCache]: Analyzing trace with hash -472619154, now seen corresponding path program 1 times [2022-03-21 00:08:01,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:08:01,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1642451613] [2022-03-21 00:08:01,330 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:08:01,330 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:08:01,330 INFO L85 PathProgramCache]: Analyzing trace with hash -472619154, now seen corresponding path program 2 times [2022-03-21 00:08:01,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:08:01,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840306564] [2022-03-21 00:08:01,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:08:01,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:08:01,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:01,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:08:01,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:01,467 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-03-21 00:08:01,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:08:01,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840306564] [2022-03-21 00:08:01,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840306564] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:08:01,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:08:01,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:08:01,468 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:08:01,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1642451613] [2022-03-21 00:08:01,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1642451613] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:08:01,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:08:01,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:08:01,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584721978] [2022-03-21 00:08:01,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:08:01,468 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-21 00:08:01,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:08:01,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-21 00:08:01,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-21 00:08:01,469 INFO L87 Difference]: Start difference. First operand 245 states and 397 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) [2022-03-21 00:08:03,276 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 [] [2022-03-21 00:08:04,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:08:04,800 INFO L93 Difference]: Finished difference Result 551 states and 890 transitions. [2022-03-21 00:08:04,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-21 00:08:04,800 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 [2022-03-21 00:08:04,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:08:04,802 INFO L225 Difference]: With dead ends: 551 [2022-03-21 00:08:04,802 INFO L226 Difference]: Without dead ends: 332 [2022-03-21 00:08:04,803 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-21 00:08:04,803 INFO L913 BasicCegarLoop]: 158 mSDtfsCounter, 165 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-03-21 00:08:04,804 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 448 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-03-21 00:08:04,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2022-03-21 00:08:04,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 245. [2022-03-21 00:08:04,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 240 states have (on average 1.625) internal successors, (390), 240 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) [2022-03-21 00:08:04,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 394 transitions. [2022-03-21 00:08:04,815 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 394 transitions. Word has length 97 [2022-03-21 00:08:04,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:08:04,815 INFO L478 AbstractCegarLoop]: Abstraction has 245 states and 394 transitions. [2022-03-21 00:08:04,816 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) [2022-03-21 00:08:04,816 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 394 transitions. [2022-03-21 00:08:04,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-03-21 00:08:04,817 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:08:04,817 INFO L499 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, 1] [2022-03-21 00:08:04,817 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-21 00:08:04,818 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:08:04,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:08:04,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1990195657, now seen corresponding path program 1 times [2022-03-21 00:08:04,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:08:04,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [423782922] [2022-03-21 00:08:04,828 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:08:04,828 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:08:04,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1990195657, now seen corresponding path program 2 times [2022-03-21 00:08:04,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:08:04,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401399141] [2022-03-21 00:08:04,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:08:04,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:08:04,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:04,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:08:04,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:04,946 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-03-21 00:08:04,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:08:04,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401399141] [2022-03-21 00:08:04,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401399141] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:08:04,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:08:04,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:08:04,947 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:08:04,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [423782922] [2022-03-21 00:08:04,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [423782922] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:08:04,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:08:04,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:08:04,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417744962] [2022-03-21 00:08:04,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:08:04,948 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-21 00:08:04,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:08:04,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-21 00:08:04,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-21 00:08:04,949 INFO L87 Difference]: Start difference. First operand 245 states and 394 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-21 00:08:06,336 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:08:08,357 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:08:10,382 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:08:12,405 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:08:12,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:08:12,835 INFO L93 Difference]: Finished difference Result 467 states and 761 transitions. [2022-03-21 00:08:12,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-21 00:08:12,835 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 98 [2022-03-21 00:08:12,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:08:12,837 INFO L225 Difference]: With dead ends: 467 [2022-03-21 00:08:12,837 INFO L226 Difference]: Without dead ends: 248 [2022-03-21 00:08:12,837 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-21 00:08:12,838 INFO L913 BasicCegarLoop]: 222 mSDtfsCounter, 11 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 4 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-03-21 00:08:12,838 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 577 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 363 Invalid, 3 Unknown, 0 Unchecked, 7.9s Time] [2022-03-21 00:08:12,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-03-21 00:08:12,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 245. [2022-03-21 00:08:12,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 240 states have (on average 1.6208333333333333) internal successors, (389), 240 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) [2022-03-21 00:08:12,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 393 transitions. [2022-03-21 00:08:12,848 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 393 transitions. Word has length 98 [2022-03-21 00:08:12,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:08:12,848 INFO L478 AbstractCegarLoop]: Abstraction has 245 states and 393 transitions. [2022-03-21 00:08:12,848 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-21 00:08:12,848 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 393 transitions. [2022-03-21 00:08:12,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-03-21 00:08:12,849 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:08:12,849 INFO L499 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, 1] [2022-03-21 00:08:12,849 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-21 00:08:12,849 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:08:12,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:08:12,850 INFO L85 PathProgramCache]: Analyzing trace with hash -344868736, now seen corresponding path program 1 times [2022-03-21 00:08:12,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:08:12,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [13350851] [2022-03-21 00:08:12,859 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:08:12,859 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:08:12,859 INFO L85 PathProgramCache]: Analyzing trace with hash -344868736, now seen corresponding path program 2 times [2022-03-21 00:08:12,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:08:12,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405258390] [2022-03-21 00:08:12,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:08:12,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:08:12,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:12,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:08:12,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:12,997 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:08:12,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:08:12,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405258390] [2022-03-21 00:08:12,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405258390] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:08:12,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:08:12,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:08:12,997 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:08:12,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [13350851] [2022-03-21 00:08:12,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [13350851] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:08:12,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:08:12,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:08:12,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867820035] [2022-03-21 00:08:12,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:08:12,998 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-21 00:08:12,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:08:12,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-21 00:08:12,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-21 00:08:12,999 INFO L87 Difference]: Start difference. First operand 245 states and 393 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 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) [2022-03-21 00:08:15,278 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:08:17,305 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:08:19,332 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 [] [2022-03-21 00:08:19,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:08:19,931 INFO L93 Difference]: Finished difference Result 627 states and 1022 transitions. [2022-03-21 00:08:19,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-21 00:08:19,931 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 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 98 [2022-03-21 00:08:19,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:08:19,933 INFO L225 Difference]: With dead ends: 627 [2022-03-21 00:08:19,934 INFO L226 Difference]: Without dead ends: 408 [2022-03-21 00:08:19,934 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-21 00:08:19,935 INFO L913 BasicCegarLoop]: 148 mSDtfsCounter, 146 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 50 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-03-21 00:08:19,935 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 428 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 491 Invalid, 3 Unknown, 0 Unchecked, 6.9s Time] [2022-03-21 00:08:19,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2022-03-21 00:08:19,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 309. [2022-03-21 00:08:19,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 304 states have (on average 1.6480263157894737) internal successors, (501), 304 states have internal predecessors, (501), 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) [2022-03-21 00:08:19,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 505 transitions. [2022-03-21 00:08:19,951 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 505 transitions. Word has length 98 [2022-03-21 00:08:19,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:08:19,952 INFO L478 AbstractCegarLoop]: Abstraction has 309 states and 505 transitions. [2022-03-21 00:08:19,952 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 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) [2022-03-21 00:08:19,952 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 505 transitions. [2022-03-21 00:08:19,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-03-21 00:08:19,953 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:08:19,953 INFO L499 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, 1] [2022-03-21 00:08:19,953 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-03-21 00:08:19,953 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:08:19,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:08:19,954 INFO L85 PathProgramCache]: Analyzing trace with hash 234045002, now seen corresponding path program 1 times [2022-03-21 00:08:19,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:08:19,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1174951917] [2022-03-21 00:08:19,965 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:08:19,965 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:08:19,965 INFO L85 PathProgramCache]: Analyzing trace with hash 234045002, now seen corresponding path program 2 times [2022-03-21 00:08:19,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:08:19,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409508067] [2022-03-21 00:08:19,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:08:19,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:08:20,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:20,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:08:20,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:20,099 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-03-21 00:08:20,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:08:20,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409508067] [2022-03-21 00:08:20,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409508067] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:08:20,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:08:20,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:08:20,101 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:08:20,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1174951917] [2022-03-21 00:08:20,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1174951917] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:08:20,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:08:20,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:08:20,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528316246] [2022-03-21 00:08:20,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:08:20,101 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-21 00:08:20,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:08:20,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-21 00:08:20,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-21 00:08:20,102 INFO L87 Difference]: Start difference. First operand 309 states and 505 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) [2022-03-21 00:08:22,111 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 [] [2022-03-21 00:08:22,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:08:22,566 INFO L93 Difference]: Finished difference Result 634 states and 1043 transitions. [2022-03-21 00:08:22,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-21 00:08:22,566 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 104 [2022-03-21 00:08:22,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:08:22,568 INFO L225 Difference]: With dead ends: 634 [2022-03-21 00:08:22,568 INFO L226 Difference]: Without dead ends: 351 [2022-03-21 00:08:22,569 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-21 00:08:22,569 INFO L913 BasicCegarLoop]: 219 mSDtfsCounter, 32 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-21 00:08:22,569 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 577 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 416 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-03-21 00:08:22,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2022-03-21 00:08:22,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 331. [2022-03-21 00:08:22,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 326 states have (on average 1.647239263803681) internal successors, (537), 326 states have internal predecessors, (537), 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) [2022-03-21 00:08:22,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 541 transitions. [2022-03-21 00:08:22,588 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 541 transitions. Word has length 104 [2022-03-21 00:08:22,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:08:22,588 INFO L478 AbstractCegarLoop]: Abstraction has 331 states and 541 transitions. [2022-03-21 00:08:22,589 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) [2022-03-21 00:08:22,589 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 541 transitions. [2022-03-21 00:08:22,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-03-21 00:08:22,590 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:08:22,590 INFO L499 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, 1] [2022-03-21 00:08:22,590 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-03-21 00:08:22,590 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:08:22,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:08:22,591 INFO L85 PathProgramCache]: Analyzing trace with hash 747722650, now seen corresponding path program 1 times [2022-03-21 00:08:22,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:08:22,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1617586964] [2022-03-21 00:08:22,602 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:08:22,603 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:08:22,603 INFO L85 PathProgramCache]: Analyzing trace with hash 747722650, now seen corresponding path program 2 times [2022-03-21 00:08:22,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:08:22,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954007565] [2022-03-21 00:08:22,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:08:22,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:08:22,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:22,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:08:22,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:22,720 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-03-21 00:08:22,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:08:22,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954007565] [2022-03-21 00:08:22,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954007565] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:08:22,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:08:22,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:08:22,721 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:08:22,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1617586964] [2022-03-21 00:08:22,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1617586964] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:08:22,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:08:22,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:08:22,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103180697] [2022-03-21 00:08:22,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:08:22,721 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-21 00:08:22,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:08:22,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-21 00:08:22,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-21 00:08:22,723 INFO L87 Difference]: Start difference. First operand 331 states and 541 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) [2022-03-21 00:08:23,822 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:08:25,663 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:08:27,691 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:08:29,716 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:08:30,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:08:30,413 INFO L93 Difference]: Finished difference Result 763 states and 1250 transitions. [2022-03-21 00:08:30,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-21 00:08:30,413 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 [2022-03-21 00:08:30,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:08:30,416 INFO L225 Difference]: With dead ends: 763 [2022-03-21 00:08:30,416 INFO L226 Difference]: Without dead ends: 458 [2022-03-21 00:08:30,417 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-21 00:08:30,417 INFO L913 BasicCegarLoop]: 275 mSDtfsCounter, 163 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 47 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 682 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-03-21 00:08:30,418 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 682 Invalid, 681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 632 Invalid, 2 Unknown, 0 Unchecked, 7.6s Time] [2022-03-21 00:08:30,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2022-03-21 00:08:30,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 347. [2022-03-21 00:08:30,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 342 states have (on average 1.628654970760234) internal successors, (557), 342 states have internal predecessors, (557), 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) [2022-03-21 00:08:30,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 561 transitions. [2022-03-21 00:08:30,436 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 561 transitions. Word has length 111 [2022-03-21 00:08:30,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:08:30,436 INFO L478 AbstractCegarLoop]: Abstraction has 347 states and 561 transitions. [2022-03-21 00:08:30,436 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) [2022-03-21 00:08:30,436 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 561 transitions. [2022-03-21 00:08:30,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-03-21 00:08:30,437 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:08:30,437 INFO L499 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, 1] [2022-03-21 00:08:30,437 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-03-21 00:08:30,437 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:08:30,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:08:30,438 INFO L85 PathProgramCache]: Analyzing trace with hash 774704089, now seen corresponding path program 1 times [2022-03-21 00:08:30,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:08:30,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [65562794] [2022-03-21 00:08:30,450 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:08:30,450 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:08:30,450 INFO L85 PathProgramCache]: Analyzing trace with hash 774704089, now seen corresponding path program 2 times [2022-03-21 00:08:30,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:08:30,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652559334] [2022-03-21 00:08:30,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:08:30,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:08:30,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:30,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:08:30,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:30,574 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-03-21 00:08:30,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:08:30,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652559334] [2022-03-21 00:08:30,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652559334] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:08:30,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:08:30,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:08:30,575 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:08:30,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [65562794] [2022-03-21 00:08:30,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [65562794] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:08:30,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:08:30,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:08:30,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579263353] [2022-03-21 00:08:30,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:08:30,576 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-21 00:08:30,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:08:30,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-21 00:08:30,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-21 00:08:30,576 INFO L87 Difference]: Start difference. First operand 347 states and 561 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) [2022-03-21 00:08:32,026 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:08:34,047 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:08:36,077 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 [] [2022-03-21 00:08:36,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:08:36,592 INFO L93 Difference]: Finished difference Result 755 states and 1220 transitions. [2022-03-21 00:08:36,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-21 00:08:36,593 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 112 [2022-03-21 00:08:36,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:08:36,595 INFO L225 Difference]: With dead ends: 755 [2022-03-21 00:08:36,595 INFO L226 Difference]: Without dead ends: 434 [2022-03-21 00:08:36,596 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-21 00:08:36,596 INFO L913 BasicCegarLoop]: 142 mSDtfsCounter, 162 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 63 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-03-21 00:08:36,597 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 416 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 497 Invalid, 2 Unknown, 0 Unchecked, 6.0s Time] [2022-03-21 00:08:36,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2022-03-21 00:08:36,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 347. [2022-03-21 00:08:36,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 342 states have (on average 1.6140350877192982) internal successors, (552), 342 states have internal predecessors, (552), 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) [2022-03-21 00:08:36,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 556 transitions. [2022-03-21 00:08:36,618 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 556 transitions. Word has length 112 [2022-03-21 00:08:36,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:08:36,618 INFO L478 AbstractCegarLoop]: Abstraction has 347 states and 556 transitions. [2022-03-21 00:08:36,618 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) [2022-03-21 00:08:36,618 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 556 transitions. [2022-03-21 00:08:36,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-03-21 00:08:36,619 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:08:36,620 INFO L499 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] [2022-03-21 00:08:36,620 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-03-21 00:08:36,620 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:08:36,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:08:36,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1836147706, now seen corresponding path program 1 times [2022-03-21 00:08:36,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:08:36,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [713444869] [2022-03-21 00:08:36,636 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:08:36,636 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:08:36,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1836147706, now seen corresponding path program 2 times [2022-03-21 00:08:36,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:08:36,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359669776] [2022-03-21 00:08:36,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:08:36,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:08:36,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:36,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:08:36,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:36,775 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-03-21 00:08:36,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:08:36,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359669776] [2022-03-21 00:08:36,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359669776] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:08:36,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:08:36,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:08:36,776 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:08:36,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [713444869] [2022-03-21 00:08:36,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [713444869] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:08:36,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:08:36,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:08:36,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302904323] [2022-03-21 00:08:36,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:08:36,776 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-21 00:08:36,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:08:36,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-21 00:08:36,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-21 00:08:36,777 INFO L87 Difference]: Start difference. First operand 347 states and 556 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-21 00:08:37,924 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 [] [2022-03-21 00:08:39,943 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:08:41,965 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:08:43,990 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 [] [2022-03-21 00:08:44,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:08:44,463 INFO L93 Difference]: Finished difference Result 680 states and 1097 transitions. [2022-03-21 00:08:44,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-21 00:08:44,464 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (3), 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 [2022-03-21 00:08:44,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:08:44,466 INFO L225 Difference]: With dead ends: 680 [2022-03-21 00:08:44,466 INFO L226 Difference]: Without dead ends: 359 [2022-03-21 00:08:44,467 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-21 00:08:44,467 INFO L913 BasicCegarLoop]: 252 mSDtfsCounter, 20 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 9 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-03-21 00:08:44,468 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 642 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 415 Invalid, 3 Unknown, 0 Unchecked, 7.7s Time] [2022-03-21 00:08:44,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-03-21 00:08:44,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 347. [2022-03-21 00:08:44,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 342 states have (on average 1.6111111111111112) internal successors, (551), 342 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) [2022-03-21 00:08:44,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 555 transitions. [2022-03-21 00:08:44,486 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 555 transitions. Word has length 118 [2022-03-21 00:08:44,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:08:44,486 INFO L478 AbstractCegarLoop]: Abstraction has 347 states and 555 transitions. [2022-03-21 00:08:44,486 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-21 00:08:44,486 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 555 transitions. [2022-03-21 00:08:44,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-03-21 00:08:44,488 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:08:44,488 INFO L499 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, 1] [2022-03-21 00:08:44,488 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-03-21 00:08:44,488 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:08:44,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:08:44,488 INFO L85 PathProgramCache]: Analyzing trace with hash -307819198, now seen corresponding path program 1 times [2022-03-21 00:08:44,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:08:44,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [582747636] [2022-03-21 00:08:44,523 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:08:44,523 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:08:44,523 INFO L85 PathProgramCache]: Analyzing trace with hash -307819198, now seen corresponding path program 2 times [2022-03-21 00:08:44,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:08:44,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773541792] [2022-03-21 00:08:44,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:08:44,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:08:44,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:44,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:08:44,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:44,658 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-03-21 00:08:44,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:08:44,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773541792] [2022-03-21 00:08:44,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773541792] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:08:44,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:08:44,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:08:44,659 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:08:44,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [582747636] [2022-03-21 00:08:44,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [582747636] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:08:44,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:08:44,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:08:44,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413319027] [2022-03-21 00:08:44,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:08:44,660 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-21 00:08:44,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:08:44,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-21 00:08:44,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-21 00:08:44,661 INFO L87 Difference]: Start difference. First operand 347 states and 555 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) [2022-03-21 00:08:47,204 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 [] [2022-03-21 00:08:49,229 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:08:50,541 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:08:51,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:08:51,044 INFO L93 Difference]: Finished difference Result 754 states and 1207 transitions. [2022-03-21 00:08:51,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-21 00:08:51,045 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 [2022-03-21 00:08:51,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:08:51,047 INFO L225 Difference]: With dead ends: 754 [2022-03-21 00:08:51,047 INFO L226 Difference]: Without dead ends: 433 [2022-03-21 00:08:51,048 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-21 00:08:51,049 INFO L913 BasicCegarLoop]: 143 mSDtfsCounter, 160 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 62 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-03-21 00:08:51,049 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 418 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 495 Invalid, 2 Unknown, 0 Unchecked, 6.3s Time] [2022-03-21 00:08:51,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2022-03-21 00:08:51,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 347. [2022-03-21 00:08:51,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 342 states have (on average 1.5964912280701755) internal successors, (546), 342 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) [2022-03-21 00:08:51,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 550 transitions. [2022-03-21 00:08:51,073 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 550 transitions. Word has length 118 [2022-03-21 00:08:51,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:08:51,074 INFO L478 AbstractCegarLoop]: Abstraction has 347 states and 550 transitions. [2022-03-21 00:08:51,074 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) [2022-03-21 00:08:51,074 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 550 transitions. [2022-03-21 00:08:51,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-03-21 00:08:51,075 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:08:51,075 INFO L499 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, 1] [2022-03-21 00:08:51,076 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-03-21 00:08:51,076 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:08:51,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:08:51,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1528382393, now seen corresponding path program 1 times [2022-03-21 00:08:51,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:08:51,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1105671644] [2022-03-21 00:08:51,093 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:08:51,094 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:08:51,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1528382393, now seen corresponding path program 2 times [2022-03-21 00:08:51,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:08:51,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706197082] [2022-03-21 00:08:51,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:08:51,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:08:51,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:51,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:08:51,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:51,245 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-03-21 00:08:51,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:08:51,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706197082] [2022-03-21 00:08:51,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706197082] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:08:51,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:08:51,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:08:51,246 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:08:51,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1105671644] [2022-03-21 00:08:51,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1105671644] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:08:51,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:08:51,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:08:51,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662661946] [2022-03-21 00:08:51,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:08:51,247 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-21 00:08:51,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:08:51,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-21 00:08:51,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-21 00:08:51,248 INFO L87 Difference]: Start difference. First operand 347 states and 550 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) [2022-03-21 00:08:53,667 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:08:55,698 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:08:56,877 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 [] [2022-03-21 00:08:57,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:08:57,388 INFO L93 Difference]: Finished difference Result 754 states and 1197 transitions. [2022-03-21 00:08:57,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-21 00:08:57,389 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 [2022-03-21 00:08:57,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:08:57,390 INFO L225 Difference]: With dead ends: 754 [2022-03-21 00:08:57,391 INFO L226 Difference]: Without dead ends: 433 [2022-03-21 00:08:57,391 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-21 00:08:57,392 INFO L913 BasicCegarLoop]: 143 mSDtfsCounter, 165 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 62 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-03-21 00:08:57,392 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 418 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 495 Invalid, 2 Unknown, 0 Unchecked, 6.1s Time] [2022-03-21 00:08:57,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2022-03-21 00:08:57,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 347. [2022-03-21 00:08:57,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 342 states have (on average 1.5789473684210527) internal successors, (540), 342 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) [2022-03-21 00:08:57,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 544 transitions. [2022-03-21 00:08:57,411 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 544 transitions. Word has length 119 [2022-03-21 00:08:57,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:08:57,411 INFO L478 AbstractCegarLoop]: Abstraction has 347 states and 544 transitions. [2022-03-21 00:08:57,412 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) [2022-03-21 00:08:57,412 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 544 transitions. [2022-03-21 00:08:57,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-03-21 00:08:57,413 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:08:57,413 INFO L499 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, 1] [2022-03-21 00:08:57,413 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-03-21 00:08:57,413 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:08:57,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:08:57,414 INFO L85 PathProgramCache]: Analyzing trace with hash 2099767366, now seen corresponding path program 1 times [2022-03-21 00:08:57,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:08:57,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1056304284] [2022-03-21 00:08:57,430 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:08:57,430 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:08:57,431 INFO L85 PathProgramCache]: Analyzing trace with hash 2099767366, now seen corresponding path program 2 times [2022-03-21 00:08:57,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:08:57,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379931534] [2022-03-21 00:08:57,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:08:57,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:08:57,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:57,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:08:57,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:57,547 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-03-21 00:08:57,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:08:57,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379931534] [2022-03-21 00:08:57,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379931534] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:08:57,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:08:57,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:08:57,547 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:08:57,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1056304284] [2022-03-21 00:08:57,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1056304284] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:08:57,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:08:57,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:08:57,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807908881] [2022-03-21 00:08:57,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:08:57,548 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-21 00:08:57,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:08:57,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-21 00:08:57,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-21 00:08:57,549 INFO L87 Difference]: Start difference. First operand 347 states and 544 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) [2022-03-21 00:09:00,052 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:09:02,079 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:09:04,101 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:09:04,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:09:04,530 INFO L93 Difference]: Finished difference Result 685 states and 1081 transitions. [2022-03-21 00:09:04,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-21 00:09:04,531 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 120 [2022-03-21 00:09:04,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:09:04,532 INFO L225 Difference]: With dead ends: 685 [2022-03-21 00:09:04,532 INFO L226 Difference]: Without dead ends: 364 [2022-03-21 00:09:04,533 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-21 00:09:04,534 INFO L913 BasicCegarLoop]: 223 mSDtfsCounter, 36 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 9 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-03-21 00:09:04,534 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 583 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 411 Invalid, 2 Unknown, 0 Unchecked, 7.0s Time] [2022-03-21 00:09:04,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2022-03-21 00:09:04,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 347. [2022-03-21 00:09:04,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 342 states have (on average 1.5760233918128654) internal successors, (539), 342 states have internal predecessors, (539), 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) [2022-03-21 00:09:04,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 543 transitions. [2022-03-21 00:09:04,551 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 543 transitions. Word has length 120 [2022-03-21 00:09:04,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:09:04,552 INFO L478 AbstractCegarLoop]: Abstraction has 347 states and 543 transitions. [2022-03-21 00:09:04,552 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) [2022-03-21 00:09:04,552 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 543 transitions. [2022-03-21 00:09:04,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-03-21 00:09:04,553 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:09:04,553 INFO L499 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, 1] [2022-03-21 00:09:04,553 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-03-21 00:09:04,554 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:09:04,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:09:04,554 INFO L85 PathProgramCache]: Analyzing trace with hash 85260427, now seen corresponding path program 1 times [2022-03-21 00:09:04,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:09:04,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1585628215] [2022-03-21 00:09:04,571 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:09:04,571 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:09:04,572 INFO L85 PathProgramCache]: Analyzing trace with hash 85260427, now seen corresponding path program 2 times [2022-03-21 00:09:04,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:09:04,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443869297] [2022-03-21 00:09:04,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:09:04,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:09:04,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:04,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:09:04,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:04,678 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-03-21 00:09:04,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:09:04,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443869297] [2022-03-21 00:09:04,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443869297] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:09:04,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:09:04,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:09:04,679 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:09:04,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1585628215] [2022-03-21 00:09:04,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1585628215] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:09:04,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:09:04,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:09:04,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949347219] [2022-03-21 00:09:04,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:09:04,680 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-21 00:09:04,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:09:04,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-21 00:09:04,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-21 00:09:04,681 INFO L87 Difference]: Start difference. First operand 347 states and 543 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-21 00:09:06,436 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:09:08,462 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:09:10,485 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 [] [2022-03-21 00:09:11,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:09:11,283 INFO L93 Difference]: Finished difference Result 675 states and 1066 transitions. [2022-03-21 00:09:11,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-21 00:09:11,283 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 1 states have call successors, (3), 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 122 [2022-03-21 00:09:11,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:09:11,284 INFO L225 Difference]: With dead ends: 675 [2022-03-21 00:09:11,284 INFO L226 Difference]: Without dead ends: 354 [2022-03-21 00:09:11,285 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-21 00:09:11,286 INFO L913 BasicCegarLoop]: 230 mSDtfsCounter, 26 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 5 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-03-21 00:09:11,286 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 597 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 397 Invalid, 2 Unknown, 0 Unchecked, 6.6s Time] [2022-03-21 00:09:11,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2022-03-21 00:09:11,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 347. [2022-03-21 00:09:11,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 342 states have (on average 1.5730994152046784) internal successors, (538), 342 states have internal predecessors, (538), 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) [2022-03-21 00:09:11,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 542 transitions. [2022-03-21 00:09:11,304 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 542 transitions. Word has length 122 [2022-03-21 00:09:11,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:09:11,304 INFO L478 AbstractCegarLoop]: Abstraction has 347 states and 542 transitions. [2022-03-21 00:09:11,304 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-21 00:09:11,305 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 542 transitions. [2022-03-21 00:09:11,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-03-21 00:09:11,306 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:09:11,306 INFO L499 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, 1] [2022-03-21 00:09:11,306 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-03-21 00:09:11,306 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:09:11,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:09:11,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1280230605, now seen corresponding path program 1 times [2022-03-21 00:09:11,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:09:11,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1188116744] [2022-03-21 00:09:11,321 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:09:11,321 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:09:11,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1280230605, now seen corresponding path program 2 times [2022-03-21 00:09:11,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:09:11,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724924661] [2022-03-21 00:09:11,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:09:11,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:09:11,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:11,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:09:11,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:11,437 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-03-21 00:09:11,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:09:11,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724924661] [2022-03-21 00:09:11,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724924661] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:09:11,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:09:11,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:09:11,438 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:09:11,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1188116744] [2022-03-21 00:09:11,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1188116744] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:09:11,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:09:11,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:09:11,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364963692] [2022-03-21 00:09:11,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:09:11,439 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-21 00:09:11,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:09:11,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-21 00:09:11,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-21 00:09:11,440 INFO L87 Difference]: Start difference. First operand 347 states and 542 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) [2022-03-21 00:09:13,455 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 [] [2022-03-21 00:09:13,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:09:13,932 INFO L93 Difference]: Finished difference Result 794 states and 1247 transitions. [2022-03-21 00:09:13,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-21 00:09:13,933 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 [2022-03-21 00:09:13,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:09:13,934 INFO L225 Difference]: With dead ends: 794 [2022-03-21 00:09:13,935 INFO L226 Difference]: Without dead ends: 473 [2022-03-21 00:09:13,935 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-21 00:09:13,936 INFO L913 BasicCegarLoop]: 143 mSDtfsCounter, 139 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 59 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-03-21 00:09:13,936 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 418 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 494 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-03-21 00:09:13,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2022-03-21 00:09:13,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 384. [2022-03-21 00:09:13,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 379 states have (on average 1.5778364116094987) internal successors, (598), 379 states have internal predecessors, (598), 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) [2022-03-21 00:09:13,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 602 transitions. [2022-03-21 00:09:13,974 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 602 transitions. Word has length 126 [2022-03-21 00:09:13,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:09:13,974 INFO L478 AbstractCegarLoop]: Abstraction has 384 states and 602 transitions. [2022-03-21 00:09:13,974 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) [2022-03-21 00:09:13,974 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 602 transitions. [2022-03-21 00:09:13,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-03-21 00:09:13,976 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:09:13,976 INFO L499 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, 1] [2022-03-21 00:09:13,976 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-03-21 00:09:13,976 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:09:13,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:09:13,976 INFO L85 PathProgramCache]: Analyzing trace with hash 860641639, now seen corresponding path program 1 times [2022-03-21 00:09:13,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:09:13,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [930168034] [2022-03-21 00:09:13,991 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:09:13,991 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:09:13,991 INFO L85 PathProgramCache]: Analyzing trace with hash 860641639, now seen corresponding path program 2 times [2022-03-21 00:09:13,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:09:13,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712624124] [2022-03-21 00:09:13,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:09:13,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:09:14,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:14,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:09:14,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:14,106 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-03-21 00:09:14,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:09:14,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712624124] [2022-03-21 00:09:14,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712624124] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:09:14,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:09:14,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:09:14,107 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:09:14,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [930168034] [2022-03-21 00:09:14,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [930168034] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:09:14,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:09:14,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:09:14,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744554624] [2022-03-21 00:09:14,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:09:14,108 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-21 00:09:14,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:09:14,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-21 00:09:14,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-21 00:09:14,109 INFO L87 Difference]: Start difference. First operand 384 states and 602 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-21 00:09:15,827 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:09:17,418 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:09:18,638 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 [] [2022-03-21 00:09:19,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:09:19,081 INFO L93 Difference]: Finished difference Result 838 states and 1320 transitions. [2022-03-21 00:09:19,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-21 00:09:19,082 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 127 [2022-03-21 00:09:19,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:09:19,084 INFO L225 Difference]: With dead ends: 838 [2022-03-21 00:09:19,084 INFO L226 Difference]: Without dead ends: 480 [2022-03-21 00:09:19,085 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-21 00:09:19,085 INFO L913 BasicCegarLoop]: 205 mSDtfsCounter, 87 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-03-21 00:09:19,085 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 549 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-03-21 00:09:19,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2022-03-21 00:09:19,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 424. [2022-03-21 00:09:19,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 419 states have (on average 1.5799522673031026) internal successors, (662), 419 states have internal predecessors, (662), 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) [2022-03-21 00:09:19,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 666 transitions. [2022-03-21 00:09:19,110 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 666 transitions. Word has length 127 [2022-03-21 00:09:19,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:09:19,111 INFO L478 AbstractCegarLoop]: Abstraction has 424 states and 666 transitions. [2022-03-21 00:09:19,111 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-21 00:09:19,111 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 666 transitions. [2022-03-21 00:09:19,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-03-21 00:09:19,112 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:09:19,112 INFO L499 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, 1] [2022-03-21 00:09:19,113 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-03-21 00:09:19,113 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:09:19,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:09:19,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1100881385, now seen corresponding path program 1 times [2022-03-21 00:09:19,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:09:19,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [119311548] [2022-03-21 00:09:19,135 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:09:19,135 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:09:19,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1100881385, now seen corresponding path program 2 times [2022-03-21 00:09:19,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:09:19,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314287638] [2022-03-21 00:09:19,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:09:19,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:09:19,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:19,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:09:19,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:19,250 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-03-21 00:09:19,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:09:19,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314287638] [2022-03-21 00:09:19,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314287638] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:09:19,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:09:19,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:09:19,251 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:09:19,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [119311548] [2022-03-21 00:09:19,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [119311548] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:09:19,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:09:19,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:09:19,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579855988] [2022-03-21 00:09:19,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:09:19,251 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-21 00:09:19,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:09:19,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-21 00:09:19,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-21 00:09:19,252 INFO L87 Difference]: Start difference. First operand 424 states and 666 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-21 00:09:20,858 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 [] [2022-03-21 00:09:22,817 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:09:24,848 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:09:26,442 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:09:26,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:09:26,842 INFO L93 Difference]: Finished difference Result 868 states and 1369 transitions. [2022-03-21 00:09:26,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-21 00:09:26,842 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 1 states have call successors, (3), 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 127 [2022-03-21 00:09:26,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:09:26,844 INFO L225 Difference]: With dead ends: 868 [2022-03-21 00:09:26,844 INFO L226 Difference]: Without dead ends: 470 [2022-03-21 00:09:26,845 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-21 00:09:26,846 INFO L913 BasicCegarLoop]: 269 mSDtfsCounter, 36 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-03-21 00:09:26,846 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 675 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 481 Invalid, 1 Unknown, 0 Unchecked, 7.6s Time] [2022-03-21 00:09:26,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2022-03-21 00:09:26,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 448. [2022-03-21 00:09:26,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 443 states have (on average 1.5756207674943568) internal successors, (698), 443 states have internal predecessors, (698), 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) [2022-03-21 00:09:26,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 702 transitions. [2022-03-21 00:09:26,871 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 702 transitions. Word has length 127 [2022-03-21 00:09:26,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:09:26,871 INFO L478 AbstractCegarLoop]: Abstraction has 448 states and 702 transitions. [2022-03-21 00:09:26,872 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-21 00:09:26,872 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 702 transitions. [2022-03-21 00:09:26,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-03-21 00:09:26,873 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:09:26,873 INFO L499 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] [2022-03-21 00:09:26,873 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-03-21 00:09:26,874 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:09:26,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:09:26,874 INFO L85 PathProgramCache]: Analyzing trace with hash -477332652, now seen corresponding path program 1 times [2022-03-21 00:09:26,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:09:26,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2008090705] [2022-03-21 00:09:26,891 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:09:26,892 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:09:26,892 INFO L85 PathProgramCache]: Analyzing trace with hash -477332652, now seen corresponding path program 2 times [2022-03-21 00:09:26,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:09:26,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456958902] [2022-03-21 00:09:26,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:09:26,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:09:26,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:27,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:09:27,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:27,026 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-03-21 00:09:27,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:09:27,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456958902] [2022-03-21 00:09:27,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456958902] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:09:27,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:09:27,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:09:27,027 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:09:27,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2008090705] [2022-03-21 00:09:27,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2008090705] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:09:27,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:09:27,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:09:27,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362643386] [2022-03-21 00:09:27,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:09:27,028 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-21 00:09:27,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:09:27,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-21 00:09:27,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-21 00:09:27,028 INFO L87 Difference]: Start difference. First operand 448 states and 702 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) [2022-03-21 00:09:28,398 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 [] [2022-03-21 00:09:30,417 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:09:33,222 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:09:33,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:09:33,681 INFO L93 Difference]: Finished difference Result 996 states and 1566 transitions. [2022-03-21 00:09:33,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-21 00:09:33,682 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 [2022-03-21 00:09:33,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:09:33,684 INFO L225 Difference]: With dead ends: 996 [2022-03-21 00:09:33,684 INFO L226 Difference]: Without dead ends: 574 [2022-03-21 00:09:33,685 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-21 00:09:33,685 INFO L913 BasicCegarLoop]: 143 mSDtfsCounter, 132 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 60 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-03-21 00:09:33,685 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 419 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 496 Invalid, 2 Unknown, 0 Unchecked, 6.6s Time] [2022-03-21 00:09:33,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2022-03-21 00:09:33,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 491. [2022-03-21 00:09:33,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 486 states have (on average 1.5802469135802468) internal successors, (768), 486 states have internal predecessors, (768), 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) [2022-03-21 00:09:33,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 772 transitions. [2022-03-21 00:09:33,716 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 772 transitions. Word has length 134 [2022-03-21 00:09:33,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:09:33,717 INFO L478 AbstractCegarLoop]: Abstraction has 491 states and 772 transitions. [2022-03-21 00:09:33,717 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) [2022-03-21 00:09:33,717 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 772 transitions. [2022-03-21 00:09:33,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-03-21 00:09:33,718 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:09:33,718 INFO L499 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, 1] [2022-03-21 00:09:33,718 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-03-21 00:09:33,718 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:09:33,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:09:33,719 INFO L85 PathProgramCache]: Analyzing trace with hash 341501800, now seen corresponding path program 1 times [2022-03-21 00:09:33,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:09:33,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [664053196] [2022-03-21 00:09:33,749 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:09:33,749 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:09:33,749 INFO L85 PathProgramCache]: Analyzing trace with hash 341501800, now seen corresponding path program 2 times [2022-03-21 00:09:33,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:09:33,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905209403] [2022-03-21 00:09:33,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:09:33,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:09:33,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:33,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:09:33,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:33,863 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-03-21 00:09:33,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:09:33,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905209403] [2022-03-21 00:09:33,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905209403] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:09:33,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:09:33,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:09:33,864 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:09:33,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [664053196] [2022-03-21 00:09:33,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [664053196] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:09:33,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:09:33,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:09:33,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556681190] [2022-03-21 00:09:33,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:09:33,865 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-21 00:09:33,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:09:33,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-21 00:09:33,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-21 00:09:33,865 INFO L87 Difference]: Start difference. First operand 491 states and 772 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-21 00:09:36,681 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:09:38,708 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:09:39,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:09:39,708 INFO L93 Difference]: Finished difference Result 1042 states and 1641 transitions. [2022-03-21 00:09:39,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-21 00:09:39,708 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 135 [2022-03-21 00:09:39,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:09:39,711 INFO L225 Difference]: With dead ends: 1042 [2022-03-21 00:09:39,711 INFO L226 Difference]: Without dead ends: 575 [2022-03-21 00:09:39,712 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-21 00:09:39,713 INFO L913 BasicCegarLoop]: 143 mSDtfsCounter, 133 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 60 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-03-21 00:09:39,713 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 418 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 495 Invalid, 2 Unknown, 0 Unchecked, 5.8s Time] [2022-03-21 00:09:39,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2022-03-21 00:09:39,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 493. [2022-03-21 00:09:39,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 488 states have (on average 1.5799180327868851) internal successors, (771), 488 states have internal predecessors, (771), 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) [2022-03-21 00:09:39,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 775 transitions. [2022-03-21 00:09:39,747 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 775 transitions. Word has length 135 [2022-03-21 00:09:39,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:09:39,747 INFO L478 AbstractCegarLoop]: Abstraction has 493 states and 775 transitions. [2022-03-21 00:09:39,747 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-21 00:09:39,747 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 775 transitions. [2022-03-21 00:09:39,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-03-21 00:09:39,749 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:09:39,749 INFO L499 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, 1] [2022-03-21 00:09:39,749 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-03-21 00:09:39,749 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:09:39,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:09:39,749 INFO L85 PathProgramCache]: Analyzing trace with hash 132882667, now seen corresponding path program 1 times [2022-03-21 00:09:39,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:09:39,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [211423026] [2022-03-21 00:09:39,786 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:09:39,787 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:09:39,787 INFO L85 PathProgramCache]: Analyzing trace with hash 132882667, now seen corresponding path program 2 times [2022-03-21 00:09:39,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:09:39,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525337409] [2022-03-21 00:09:39,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:09:39,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:09:39,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:39,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:09:39,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:39,909 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-03-21 00:09:39,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:09:39,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525337409] [2022-03-21 00:09:39,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525337409] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:09:39,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:09:39,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:09:39,910 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:09:39,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [211423026] [2022-03-21 00:09:39,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [211423026] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:09:39,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:09:39,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:09:39,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295558096] [2022-03-21 00:09:39,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:09:39,910 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-21 00:09:39,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:09:39,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-21 00:09:39,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-21 00:09:39,912 INFO L87 Difference]: Start difference. First operand 493 states and 775 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-21 00:09:41,221 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:09:42,473 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:09:44,316 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:09:46,261 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:09:46,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:09:46,740 INFO L93 Difference]: Finished difference Result 1042 states and 1640 transitions. [2022-03-21 00:09:46,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-21 00:09:46,740 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (3), 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 143 [2022-03-21 00:09:46,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:09:46,742 INFO L225 Difference]: With dead ends: 1042 [2022-03-21 00:09:46,743 INFO L226 Difference]: Without dead ends: 575 [2022-03-21 00:09:46,744 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-21 00:09:46,744 INFO L913 BasicCegarLoop]: 144 mSDtfsCounter, 161 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-03-21 00:09:46,744 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 420 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-03-21 00:09:46,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2022-03-21 00:09:46,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 493. [2022-03-21 00:09:46,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 488 states have (on average 1.5614754098360655) internal successors, (762), 488 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) [2022-03-21 00:09:46,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 766 transitions. [2022-03-21 00:09:46,793 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 766 transitions. Word has length 143 [2022-03-21 00:09:46,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:09:46,794 INFO L478 AbstractCegarLoop]: Abstraction has 493 states and 766 transitions. [2022-03-21 00:09:46,794 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-21 00:09:46,794 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 766 transitions. [2022-03-21 00:09:46,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-03-21 00:09:46,795 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:09:46,795 INFO L499 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, 1] [2022-03-21 00:09:46,795 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-03-21 00:09:46,795 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:09:46,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:09:46,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1361778810, now seen corresponding path program 1 times [2022-03-21 00:09:46,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:09:46,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1818196479] [2022-03-21 00:09:46,815 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:09:46,815 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:09:46,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1361778810, now seen corresponding path program 2 times [2022-03-21 00:09:46,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:09:46,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308949709] [2022-03-21 00:09:46,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:09:46,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:09:46,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:46,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:09:46,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:46,924 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-03-21 00:09:46,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:09:46,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308949709] [2022-03-21 00:09:46,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308949709] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:09:46,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:09:46,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:09:46,925 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:09:46,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1818196479] [2022-03-21 00:09:46,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1818196479] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:09:46,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:09:46,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:09:46,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182833776] [2022-03-21 00:09:46,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:09:46,926 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-21 00:09:46,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:09:46,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-21 00:09:46,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-21 00:09:46,926 INFO L87 Difference]: Start difference. First operand 493 states and 766 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) [2022-03-21 00:09:49,401 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:09:51,427 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:09:53,453 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 [] [2022-03-21 00:09:53,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:09:53,924 INFO L93 Difference]: Finished difference Result 1032 states and 1609 transitions. [2022-03-21 00:09:53,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-21 00:09:53,924 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 145 [2022-03-21 00:09:53,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:09:53,940 INFO L225 Difference]: With dead ends: 1032 [2022-03-21 00:09:53,941 INFO L226 Difference]: Without dead ends: 565 [2022-03-21 00:09:53,943 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-21 00:09:53,944 INFO L913 BasicCegarLoop]: 170 mSDtfsCounter, 151 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 52 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-03-21 00:09:53,944 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 472 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 498 Invalid, 2 Unknown, 0 Unchecked, 7.0s Time] [2022-03-21 00:09:53,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2022-03-21 00:09:53,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 493. [2022-03-21 00:09:53,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 488 states have (on average 1.5430327868852458) internal successors, (753), 488 states have internal predecessors, (753), 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) [2022-03-21 00:09:53,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 757 transitions. [2022-03-21 00:09:53,980 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 757 transitions. Word has length 145 [2022-03-21 00:09:53,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:09:53,980 INFO L478 AbstractCegarLoop]: Abstraction has 493 states and 757 transitions. [2022-03-21 00:09:53,980 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) [2022-03-21 00:09:53,980 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 757 transitions. [2022-03-21 00:09:53,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-03-21 00:09:53,981 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:09:53,982 INFO L499 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, 1] [2022-03-21 00:09:53,982 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-03-21 00:09:53,983 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:09:53,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:09:53,983 INFO L85 PathProgramCache]: Analyzing trace with hash -735212620, now seen corresponding path program 1 times [2022-03-21 00:09:53,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:09:53,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1173044611] [2022-03-21 00:09:54,000 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:09:54,000 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:09:54,001 INFO L85 PathProgramCache]: Analyzing trace with hash -735212620, now seen corresponding path program 2 times [2022-03-21 00:09:54,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:09:54,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812968120] [2022-03-21 00:09:54,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:09:54,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:09:54,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:54,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:09:54,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:54,123 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-03-21 00:09:54,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:09:54,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812968120] [2022-03-21 00:09:54,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812968120] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:09:54,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:09:54,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:09:54,124 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:09:54,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1173044611] [2022-03-21 00:09:54,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1173044611] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:09:54,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:09:54,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:09:54,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250526240] [2022-03-21 00:09:54,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:09:54,125 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-21 00:09:54,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:09:54,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-21 00:09:54,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-21 00:09:54,126 INFO L87 Difference]: Start difference. First operand 493 states and 757 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) [2022-03-21 00:09:55,497 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 [] [2022-03-21 00:09:57,520 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:09:59,545 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:10:00,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:10:00,919 INFO L93 Difference]: Finished difference Result 1074 states and 1657 transitions. [2022-03-21 00:10:00,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-21 00:10:00,920 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 [2022-03-21 00:10:00,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:10:00,922 INFO L225 Difference]: With dead ends: 1074 [2022-03-21 00:10:00,922 INFO L226 Difference]: Without dead ends: 607 [2022-03-21 00:10:00,923 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-21 00:10:00,923 INFO L913 BasicCegarLoop]: 170 mSDtfsCounter, 135 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 46 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-03-21 00:10:00,923 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 472 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 501 Invalid, 2 Unknown, 0 Unchecked, 6.7s Time] [2022-03-21 00:10:00,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2022-03-21 00:10:00,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 523. [2022-03-21 00:10:00,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 518 states have (on average 1.5308880308880308) internal successors, (793), 518 states have internal predecessors, (793), 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) [2022-03-21 00:10:00,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 797 transitions. [2022-03-21 00:10:00,964 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 797 transitions. Word has length 147 [2022-03-21 00:10:00,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:10:00,964 INFO L478 AbstractCegarLoop]: Abstraction has 523 states and 797 transitions. [2022-03-21 00:10:00,964 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) [2022-03-21 00:10:00,964 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 797 transitions. [2022-03-21 00:10:00,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-03-21 00:10:00,965 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:10:00,966 INFO L499 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, 1] [2022-03-21 00:10:00,966 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-03-21 00:10:00,966 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:10:00,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:10:00,966 INFO L85 PathProgramCache]: Analyzing trace with hash 2018925445, now seen corresponding path program 1 times [2022-03-21 00:10:00,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:10:00,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1609031971] [2022-03-21 00:10:00,984 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:10:00,984 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:10:00,984 INFO L85 PathProgramCache]: Analyzing trace with hash 2018925445, now seen corresponding path program 2 times [2022-03-21 00:10:00,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:10:00,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703637583] [2022-03-21 00:10:00,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:10:00,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:10:01,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:10:01,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:10:01,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:10:01,101 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-03-21 00:10:01,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:10:01,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703637583] [2022-03-21 00:10:01,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703637583] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:10:01,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:10:01,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:10:01,101 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:10:01,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1609031971] [2022-03-21 00:10:01,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1609031971] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:10:01,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:10:01,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:10:01,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944456414] [2022-03-21 00:10:01,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:10:01,102 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-21 00:10:01,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:10:01,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-21 00:10:01,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-21 00:10:01,103 INFO L87 Difference]: Start difference. First operand 523 states and 797 transitions. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-21 00:10:03,112 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 [] [2022-03-21 00:10:03,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:10:03,552 INFO L93 Difference]: Finished difference Result 1056 states and 1616 transitions. [2022-03-21 00:10:03,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-21 00:10:03,552 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 148 [2022-03-21 00:10:03,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:10:03,555 INFO L225 Difference]: With dead ends: 1056 [2022-03-21 00:10:03,555 INFO L226 Difference]: Without dead ends: 559 [2022-03-21 00:10:03,556 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-21 00:10:03,556 INFO L913 BasicCegarLoop]: 216 mSDtfsCounter, 69 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-21 00:10:03,556 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 571 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 501 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-03-21 00:10:03,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2022-03-21 00:10:03,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 523. [2022-03-21 00:10:03,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 518 states have (on average 1.528957528957529) internal successors, (792), 518 states have internal predecessors, (792), 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) [2022-03-21 00:10:03,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 796 transitions. [2022-03-21 00:10:03,595 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 796 transitions. Word has length 148 [2022-03-21 00:10:03,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:10:03,596 INFO L478 AbstractCegarLoop]: Abstraction has 523 states and 796 transitions. [2022-03-21 00:10:03,596 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-21 00:10:03,596 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 796 transitions. [2022-03-21 00:10:03,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-03-21 00:10:03,597 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:10:03,597 INFO L499 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] [2022-03-21 00:10:03,597 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-03-21 00:10:03,598 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:10:03,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:10:03,598 INFO L85 PathProgramCache]: Analyzing trace with hash -676729684, now seen corresponding path program 1 times [2022-03-21 00:10:03,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:10:03,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1614761748] [2022-03-21 00:10:03,617 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:10:03,617 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:10:03,617 INFO L85 PathProgramCache]: Analyzing trace with hash -676729684, now seen corresponding path program 2 times [2022-03-21 00:10:03,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:10:03,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170209481] [2022-03-21 00:10:03,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:10:03,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:10:03,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:10:03,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:10:03,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:10:03,734 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-03-21 00:10:03,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:10:03,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170209481] [2022-03-21 00:10:03,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170209481] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:10:03,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:10:03,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:10:03,736 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:10:03,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1614761748] [2022-03-21 00:10:03,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1614761748] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:10:03,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:10:03,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:10:03,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804395822] [2022-03-21 00:10:03,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:10:03,737 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-21 00:10:03,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:10:03,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-21 00:10:03,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-21 00:10:03,738 INFO L87 Difference]: Start difference. First operand 523 states and 796 transitions. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-21 00:10:05,544 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 [] [2022-03-21 00:10:07,570 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:10:09,977 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:10:10,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:10:10,463 INFO L93 Difference]: Finished difference Result 1092 states and 1669 transitions. [2022-03-21 00:10:10,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-21 00:10:10,463 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 149 [2022-03-21 00:10:10,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:10:10,465 INFO L225 Difference]: With dead ends: 1092 [2022-03-21 00:10:10,465 INFO L226 Difference]: Without dead ends: 595 [2022-03-21 00:10:10,466 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-21 00:10:10,466 INFO L913 BasicCegarLoop]: 161 mSDtfsCounter, 141 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 51 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-03-21 00:10:10,466 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 454 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 491 Invalid, 2 Unknown, 0 Unchecked, 6.7s Time] [2022-03-21 00:10:10,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2022-03-21 00:10:10,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 523. [2022-03-21 00:10:10,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 518 states have (on average 1.5135135135135136) internal successors, (784), 518 states have internal predecessors, (784), 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) [2022-03-21 00:10:10,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 788 transitions. [2022-03-21 00:10:10,507 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 788 transitions. Word has length 149 [2022-03-21 00:10:10,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:10:10,507 INFO L478 AbstractCegarLoop]: Abstraction has 523 states and 788 transitions. [2022-03-21 00:10:10,507 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-21 00:10:10,507 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 788 transitions. [2022-03-21 00:10:10,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-03-21 00:10:10,508 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:10:10,509 INFO L499 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] [2022-03-21 00:10:10,509 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-03-21 00:10:10,509 INFO L403 AbstractCegarLoop]: === Iteration 31 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:10:10,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:10:10,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1983872082, now seen corresponding path program 1 times [2022-03-21 00:10:10,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:10:10,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1348899469] [2022-03-21 00:10:10,527 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:10:10,527 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:10:10,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1983872082, now seen corresponding path program 2 times [2022-03-21 00:10:10,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:10:10,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160785083] [2022-03-21 00:10:10,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:10:10,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:10:10,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:10:10,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:10:10,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:10:10,673 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-03-21 00:10:10,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:10:10,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160785083] [2022-03-21 00:10:10,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160785083] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:10:10,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:10:10,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-21 00:10:10,674 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:10:10,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1348899469] [2022-03-21 00:10:10,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1348899469] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:10:10,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:10:10,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-21 00:10:10,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296598043] [2022-03-21 00:10:10,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:10:10,675 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-21 00:10:10,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:10:10,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-21 00:10:10,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-21 00:10:10,675 INFO L87 Difference]: Start difference. First operand 523 states and 788 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 3 states have internal predecessors, (117), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-21 00:10:12,678 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:10:14,702 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:10:15,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:10:15,122 INFO L93 Difference]: Finished difference Result 1514 states and 2302 transitions. [2022-03-21 00:10:15,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-21 00:10:15,122 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 3 states have internal predecessors, (117), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 149 [2022-03-21 00:10:15,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:10:15,125 INFO L225 Difference]: With dead ends: 1514 [2022-03-21 00:10:15,125 INFO L226 Difference]: Without dead ends: 1017 [2022-03-21 00:10:15,126 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-21 00:10:15,127 INFO L913 BasicCegarLoop]: 266 mSDtfsCounter, 154 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 23 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-03-21 00:10:15,127 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 460 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 356 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2022-03-21 00:10:15,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1017 states. [2022-03-21 00:10:15,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1017 to 1017. [2022-03-21 00:10:15,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1017 states, 1012 states have (on average 1.5) internal successors, (1518), 1012 states have internal predecessors, (1518), 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) [2022-03-21 00:10:15,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1017 states to 1017 states and 1522 transitions. [2022-03-21 00:10:15,227 INFO L78 Accepts]: Start accepts. Automaton has 1017 states and 1522 transitions. Word has length 149 [2022-03-21 00:10:15,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:10:15,228 INFO L478 AbstractCegarLoop]: Abstraction has 1017 states and 1522 transitions. [2022-03-21 00:10:15,232 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 3 states have internal predecessors, (117), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-21 00:10:15,232 INFO L276 IsEmpty]: Start isEmpty. Operand 1017 states and 1522 transitions. [2022-03-21 00:10:15,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-03-21 00:10:15,236 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:10:15,236 INFO L499 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] [2022-03-21 00:10:15,236 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-03-21 00:10:15,236 INFO L403 AbstractCegarLoop]: === Iteration 32 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:10:15,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:10:15,237 INFO L85 PathProgramCache]: Analyzing trace with hash 277701168, now seen corresponding path program 1 times [2022-03-21 00:10:15,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:10:15,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [890919463] [2022-03-21 00:10:15,256 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:10:15,256 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:10:15,256 INFO L85 PathProgramCache]: Analyzing trace with hash 277701168, now seen corresponding path program 2 times [2022-03-21 00:10:15,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:10:15,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561746817] [2022-03-21 00:10:15,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:10:15,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:10:15,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:10:15,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:10:15,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:10:15,357 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-03-21 00:10:15,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:10:15,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561746817] [2022-03-21 00:10:15,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561746817] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:10:15,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:10:15,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-21 00:10:15,357 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:10:15,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [890919463] [2022-03-21 00:10:15,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [890919463] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:10:15,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:10:15,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-21 00:10:15,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129748927] [2022-03-21 00:10:15,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:10:15,359 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-21 00:10:15,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:10:15,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-21 00:10:15,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-21 00:10:15,360 INFO L87 Difference]: Start difference. First operand 1017 states and 1522 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-21 00:10:16,904 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 [] [2022-03-21 00:10:18,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:10:18,486 INFO L93 Difference]: Finished difference Result 2035 states and 3051 transitions. [2022-03-21 00:10:18,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-21 00:10:18,487 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 1 states have call successors, (3), 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 149 [2022-03-21 00:10:18,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:10:18,490 INFO L225 Difference]: With dead ends: 2035 [2022-03-21 00:10:18,490 INFO L226 Difference]: Without dead ends: 1044 [2022-03-21 00:10:18,491 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-21 00:10:18,492 INFO L913 BasicCegarLoop]: 247 mSDtfsCounter, 15 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-03-21 00:10:18,492 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 441 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-03-21 00:10:18,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2022-03-21 00:10:18,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 1044. [2022-03-21 00:10:18,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1044 states, 1039 states have (on average 1.494706448508181) internal successors, (1553), 1039 states have internal predecessors, (1553), 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) [2022-03-21 00:10:18,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1044 states to 1044 states and 1557 transitions. [2022-03-21 00:10:18,558 INFO L78 Accepts]: Start accepts. Automaton has 1044 states and 1557 transitions. Word has length 149 [2022-03-21 00:10:18,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:10:18,559 INFO L478 AbstractCegarLoop]: Abstraction has 1044 states and 1557 transitions. [2022-03-21 00:10:18,559 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-21 00:10:18,559 INFO L276 IsEmpty]: Start isEmpty. Operand 1044 states and 1557 transitions. [2022-03-21 00:10:18,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-03-21 00:10:18,561 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:10:18,561 INFO L499 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] [2022-03-21 00:10:18,562 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-03-21 00:10:18,562 INFO L403 AbstractCegarLoop]: === Iteration 33 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:10:18,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:10:18,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1139534770, now seen corresponding path program 1 times [2022-03-21 00:10:18,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:10:18,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1625382563] [2022-03-21 00:10:18,580 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:10:18,580 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:10:18,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1139534770, now seen corresponding path program 2 times [2022-03-21 00:10:18,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:10:18,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544498038] [2022-03-21 00:10:18,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:10:18,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:10:18,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:10:18,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:10:18,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:10:18,715 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-03-21 00:10:18,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:10:18,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544498038] [2022-03-21 00:10:18,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544498038] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:10:18,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:10:18,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-21 00:10:18,716 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:10:18,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1625382563] [2022-03-21 00:10:18,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1625382563] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:10:18,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:10:18,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-21 00:10:18,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523453379] [2022-03-21 00:10:18,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:10:18,716 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-21 00:10:18,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:10:18,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-21 00:10:18,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-21 00:10:18,717 INFO L87 Difference]: Start difference. First operand 1044 states and 1557 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-21 00:10:20,155 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:10:22,179 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 [] [2022-03-21 00:10:23,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:10:23,355 INFO L93 Difference]: Finished difference Result 2064 states and 3087 transitions. [2022-03-21 00:10:23,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-21 00:10:23,355 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (3), 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 149 [2022-03-21 00:10:23,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:10:23,358 INFO L225 Difference]: With dead ends: 2064 [2022-03-21 00:10:23,358 INFO L226 Difference]: Without dead ends: 1046 [2022-03-21 00:10:23,360 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-21 00:10:23,360 INFO L913 BasicCegarLoop]: 235 mSDtfsCounter, 4 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-03-21 00:10:23,360 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 420 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 283 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2022-03-21 00:10:23,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2022-03-21 00:10:23,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 1046. [2022-03-21 00:10:23,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1046 states, 1041 states have (on average 1.493756003842459) internal successors, (1555), 1041 states have internal predecessors, (1555), 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) [2022-03-21 00:10:23,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1559 transitions. [2022-03-21 00:10:23,432 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1559 transitions. Word has length 149 [2022-03-21 00:10:23,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:10:23,432 INFO L478 AbstractCegarLoop]: Abstraction has 1046 states and 1559 transitions. [2022-03-21 00:10:23,432 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-21 00:10:23,432 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1559 transitions. [2022-03-21 00:10:23,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-03-21 00:10:23,434 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:10:23,434 INFO L499 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, 1] [2022-03-21 00:10:23,435 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-03-21 00:10:23,435 INFO L403 AbstractCegarLoop]: === Iteration 34 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:10:23,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:10:23,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1758663656, now seen corresponding path program 1 times [2022-03-21 00:10:23,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:10:23,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [297144773] [2022-03-21 00:10:23,461 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:10:23,461 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:10:23,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1758663656, now seen corresponding path program 2 times [2022-03-21 00:10:23,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:10:23,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165009106] [2022-03-21 00:10:23,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:10:23,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:10:23,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:10:23,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:10:23,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:10:23,580 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-03-21 00:10:23,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:10:23,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165009106] [2022-03-21 00:10:23,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165009106] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:10:23,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:10:23,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-21 00:10:23,581 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:10:23,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [297144773] [2022-03-21 00:10:23,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [297144773] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:10:23,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:10:23,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-21 00:10:23,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483357078] [2022-03-21 00:10:23,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:10:23,581 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-21 00:10:23,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:10:23,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-21 00:10:23,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-21 00:10:23,582 INFO L87 Difference]: Start difference. First operand 1046 states and 1559 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-21 00:10:24,637 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:10:26,653 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:10:28,679 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:10:29,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:10:29,267 INFO L93 Difference]: Finished difference Result 2558 states and 3842 transitions. [2022-03-21 00:10:29,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-21 00:10:29,268 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 151 [2022-03-21 00:10:29,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:10:29,272 INFO L225 Difference]: With dead ends: 2558 [2022-03-21 00:10:29,272 INFO L226 Difference]: Without dead ends: 1540 [2022-03-21 00:10:29,273 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-21 00:10:29,274 INFO L913 BasicCegarLoop]: 407 mSDtfsCounter, 159 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 23 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-03-21 00:10:29,274 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 601 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 496 Invalid, 2 Unknown, 0 Unchecked, 5.6s Time] [2022-03-21 00:10:29,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1540 states. [2022-03-21 00:10:29,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1540 to 1540. [2022-03-21 00:10:29,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1540 states, 1535 states have (on average 1.4912052117263843) internal successors, (2289), 1535 states have internal predecessors, (2289), 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) [2022-03-21 00:10:29,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1540 states to 1540 states and 2293 transitions. [2022-03-21 00:10:29,366 INFO L78 Accepts]: Start accepts. Automaton has 1540 states and 2293 transitions. Word has length 151 [2022-03-21 00:10:29,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:10:29,366 INFO L478 AbstractCegarLoop]: Abstraction has 1540 states and 2293 transitions. [2022-03-21 00:10:29,366 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-21 00:10:29,366 INFO L276 IsEmpty]: Start isEmpty. Operand 1540 states and 2293 transitions. [2022-03-21 00:10:29,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-03-21 00:10:29,369 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:10:29,369 INFO L499 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, 1] [2022-03-21 00:10:29,369 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-03-21 00:10:29,369 INFO L403 AbstractCegarLoop]: === Iteration 35 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:10:29,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:10:29,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1810178279, now seen corresponding path program 1 times [2022-03-21 00:10:29,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:10:29,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [801503363] [2022-03-21 00:10:29,397 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:10:29,398 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:10:29,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1810178279, now seen corresponding path program 2 times [2022-03-21 00:10:29,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:10:29,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647248371] [2022-03-21 00:10:29,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:10:29,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:10:29,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:10:29,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:10:29,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:10:29,532 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-03-21 00:10:29,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:10:29,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647248371] [2022-03-21 00:10:29,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647248371] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:10:29,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:10:29,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:10:29,533 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:10:29,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [801503363] [2022-03-21 00:10:29,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [801503363] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:10:29,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:10:29,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:10:29,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353648480] [2022-03-21 00:10:29,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:10:29,534 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-21 00:10:29,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:10:29,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-21 00:10:29,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-21 00:10:29,534 INFO L87 Difference]: Start difference. First operand 1540 states and 2293 transitions. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-21 00:10:31,150 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:10:33,176 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:10:35,202 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:10:37,228 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:10:37,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:10:37,753 INFO L93 Difference]: Finished difference Result 3202 states and 4773 transitions. [2022-03-21 00:10:37,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-21 00:10:37,753 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 1 states have call successors, (3), 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 180 [2022-03-21 00:10:37,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:10:37,758 INFO L225 Difference]: With dead ends: 3202 [2022-03-21 00:10:37,758 INFO L226 Difference]: Without dead ends: 1690 [2022-03-21 00:10:37,760 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-21 00:10:37,760 INFO L913 BasicCegarLoop]: 268 mSDtfsCounter, 40 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 5 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-03-21 00:10:37,760 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 673 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 507 Invalid, 3 Unknown, 0 Unchecked, 8.1s Time] [2022-03-21 00:10:37,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1690 states. [2022-03-21 00:10:37,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1690 to 1624. [2022-03-21 00:10:37,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1624 states, 1619 states have (on average 1.489808523780111) internal successors, (2412), 1619 states have internal predecessors, (2412), 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) [2022-03-21 00:10:37,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1624 states to 1624 states and 2416 transitions. [2022-03-21 00:10:37,863 INFO L78 Accepts]: Start accepts. Automaton has 1624 states and 2416 transitions. Word has length 180 [2022-03-21 00:10:37,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:10:37,864 INFO L478 AbstractCegarLoop]: Abstraction has 1624 states and 2416 transitions. [2022-03-21 00:10:37,864 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-21 00:10:37,864 INFO L276 IsEmpty]: Start isEmpty. Operand 1624 states and 2416 transitions. [2022-03-21 00:10:37,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2022-03-21 00:10:37,867 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:10:37,867 INFO L499 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, 1] [2022-03-21 00:10:37,867 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-03-21 00:10:37,868 INFO L403 AbstractCegarLoop]: === Iteration 36 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:10:37,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:10:37,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1599757603, now seen corresponding path program 1 times [2022-03-21 00:10:37,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:10:37,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [520220929] [2022-03-21 00:10:46,523 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:10:46,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1599757603, now seen corresponding path program 2 times [2022-03-21 00:10:46,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:10:46,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830853947] [2022-03-21 00:10:46,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:10:46,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:10:46,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:10:46,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:10:46,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:10:46,683 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 246 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2022-03-21 00:10:46,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:10:46,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830853947] [2022-03-21 00:10:46,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830853947] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:10:46,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:10:46,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:10:46,684 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:10:46,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [520220929] [2022-03-21 00:10:46,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [520220929] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:10:46,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:10:46,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:10:46,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005224702] [2022-03-21 00:10:46,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:10:46,685 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-21 00:10:46,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:10:46,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-21 00:10:46,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-21 00:10:46,685 INFO L87 Difference]: Start difference. First operand 1624 states and 2416 transitions. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-21 00:10:49,283 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:10:51,310 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:10:52,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:10:52,450 INFO L93 Difference]: Finished difference Result 3431 states and 5082 transitions. [2022-03-21 00:10:52,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-21 00:10:52,451 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 1 states have call successors, (3), 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 [2022-03-21 00:10:52,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:10:52,455 INFO L225 Difference]: With dead ends: 3431 [2022-03-21 00:10:52,455 INFO L226 Difference]: Without dead ends: 1835 [2022-03-21 00:10:52,457 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-21 00:10:52,457 INFO L913 BasicCegarLoop]: 164 mSDtfsCounter, 140 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 55 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-03-21 00:10:52,458 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 460 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 492 Invalid, 2 Unknown, 0 Unchecked, 5.6s Time] [2022-03-21 00:10:52,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1835 states. [2022-03-21 00:10:52,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1835 to 1624. [2022-03-21 00:10:52,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1624 states, 1619 states have (on average 1.4731315626930204) internal successors, (2385), 1619 states have internal predecessors, (2385), 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) [2022-03-21 00:10:52,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1624 states to 1624 states and 2389 transitions. [2022-03-21 00:10:52,548 INFO L78 Accepts]: Start accepts. Automaton has 1624 states and 2389 transitions. Word has length 203 [2022-03-21 00:10:52,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:10:52,548 INFO L478 AbstractCegarLoop]: Abstraction has 1624 states and 2389 transitions. [2022-03-21 00:10:52,549 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-21 00:10:52,549 INFO L276 IsEmpty]: Start isEmpty. Operand 1624 states and 2389 transitions. [2022-03-21 00:10:52,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-03-21 00:10:52,551 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:10:52,552 INFO L499 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, 1] [2022-03-21 00:10:52,552 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-03-21 00:10:52,552 INFO L403 AbstractCegarLoop]: === Iteration 37 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:10:52,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:10:52,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1137969465, now seen corresponding path program 1 times [2022-03-21 00:10:52,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:10:52,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1013257794] [2022-03-21 00:10:52,590 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:10:52,590 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:10:52,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1137969465, now seen corresponding path program 2 times [2022-03-21 00:10:52,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:10:52,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865678832] [2022-03-21 00:10:52,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:10:52,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:10:52,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:10:52,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:10:52,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:10:52,769 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2022-03-21 00:10:52,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:10:52,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865678832] [2022-03-21 00:10:52,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865678832] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:10:52,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:10:52,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-21 00:10:52,770 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:10:52,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1013257794] [2022-03-21 00:10:52,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1013257794] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:10:52,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:10:52,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-21 00:10:52,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895712060] [2022-03-21 00:10:52,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:10:52,771 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-21 00:10:52,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:10:52,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-21 00:10:52,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-21 00:10:52,773 INFO L87 Difference]: Start difference. First operand 1624 states and 2389 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 3 states have internal predecessors, (110), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-21 00:10:54,728 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:10:55,864 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:10:57,565 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 [] [2022-03-21 00:10:58,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:10:58,067 INFO L93 Difference]: Finished difference Result 3743 states and 5535 transitions. [2022-03-21 00:10:58,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-21 00:10:58,067 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 3 states have internal predecessors, (110), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 204 [2022-03-21 00:10:58,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:10:58,073 INFO L225 Difference]: With dead ends: 3743 [2022-03-21 00:10:58,073 INFO L226 Difference]: Without dead ends: 2147 [2022-03-21 00:10:58,076 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-21 00:10:58,076 INFO L913 BasicCegarLoop]: 208 mSDtfsCounter, 163 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-03-21 00:10:58,076 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 393 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-03-21 00:10:58,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2147 states. [2022-03-21 00:10:58,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2147 to 2147. [2022-03-21 00:10:58,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2147 states, 2142 states have (on average 1.4743230625583568) internal successors, (3158), 2142 states have internal predecessors, (3158), 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) [2022-03-21 00:10:58,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2147 states to 2147 states and 3162 transitions. [2022-03-21 00:10:58,267 INFO L78 Accepts]: Start accepts. Automaton has 2147 states and 3162 transitions. Word has length 204 [2022-03-21 00:10:58,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:10:58,267 INFO L478 AbstractCegarLoop]: Abstraction has 2147 states and 3162 transitions. [2022-03-21 00:10:58,267 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 3 states have internal predecessors, (110), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-21 00:10:58,267 INFO L276 IsEmpty]: Start isEmpty. Operand 2147 states and 3162 transitions. [2022-03-21 00:10:58,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-03-21 00:10:58,271 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:10:58,271 INFO L499 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, 1] [2022-03-21 00:10:58,271 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-03-21 00:10:58,271 INFO L403 AbstractCegarLoop]: === Iteration 38 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:10:58,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:10:58,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1771993246, now seen corresponding path program 1 times [2022-03-21 00:10:58,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:10:58,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1252435754] [2022-03-21 00:11:07,035 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:11:07,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1771993246, now seen corresponding path program 2 times [2022-03-21 00:11:07,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:11:07,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271094348] [2022-03-21 00:11:07,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:11:07,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:11:07,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:07,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:11:07,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:07,206 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 322 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2022-03-21 00:11:07,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:11:07,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271094348] [2022-03-21 00:11:07,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271094348] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:11:07,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:11:07,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:11:07,207 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:11:07,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1252435754] [2022-03-21 00:11:07,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1252435754] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:11:07,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:11:07,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:11:07,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607536269] [2022-03-21 00:11:07,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:11:07,208 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-21 00:11:07,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:11:07,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-21 00:11:07,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-21 00:11:07,209 INFO L87 Difference]: Start difference. First operand 2147 states and 3162 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) [2022-03-21 00:11:09,223 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 [] [2022-03-21 00:11:09,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:11:09,823 INFO L93 Difference]: Finished difference Result 4335 states and 6393 transitions. [2022-03-21 00:11:09,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-21 00:11:09,823 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 [2022-03-21 00:11:09,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:11:09,831 INFO L225 Difference]: With dead ends: 4335 [2022-03-21 00:11:09,831 INFO L226 Difference]: Without dead ends: 2216 [2022-03-21 00:11:09,836 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-21 00:11:09,836 INFO L913 BasicCegarLoop]: 262 mSDtfsCounter, 38 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-21 00:11:09,836 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 661 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 490 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-03-21 00:11:09,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2216 states. [2022-03-21 00:11:09,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2216 to 2147. [2022-03-21 00:11:09,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2147 states, 2142 states have (on average 1.4724556489262373) internal successors, (3154), 2142 states have internal predecessors, (3154), 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) [2022-03-21 00:11:09,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2147 states to 2147 states and 3158 transitions. [2022-03-21 00:11:09,976 INFO L78 Accepts]: Start accepts. Automaton has 2147 states and 3158 transitions. Word has length 234 [2022-03-21 00:11:09,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:11:09,977 INFO L478 AbstractCegarLoop]: Abstraction has 2147 states and 3158 transitions. [2022-03-21 00:11:09,977 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) [2022-03-21 00:11:09,977 INFO L276 IsEmpty]: Start isEmpty. Operand 2147 states and 3158 transitions. [2022-03-21 00:11:09,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-03-21 00:11:09,982 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:11:09,982 INFO L499 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, 1] [2022-03-21 00:11:09,983 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-03-21 00:11:09,983 INFO L403 AbstractCegarLoop]: === Iteration 39 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:11:09,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:11:09,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1042693457, now seen corresponding path program 1 times [2022-03-21 00:11:09,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:11:09,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [776591905] [2022-03-21 00:11:19,293 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:11:19,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1042693457, now seen corresponding path program 2 times [2022-03-21 00:11:19,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:11:19,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115717419] [2022-03-21 00:11:19,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:11:19,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:11:19,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:19,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:11:19,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:19,476 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 327 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2022-03-21 00:11:19,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:11:19,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115717419] [2022-03-21 00:11:19,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115717419] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:11:19,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:11:19,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:11:19,477 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:11:19,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [776591905] [2022-03-21 00:11:19,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [776591905] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:11:19,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:11:19,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:11:19,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491294481] [2022-03-21 00:11:19,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:11:19,478 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-21 00:11:19,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:11:19,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-21 00:11:19,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-21 00:11:19,479 INFO L87 Difference]: Start difference. First operand 2147 states and 3158 transitions. Second operand has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 states have internal predecessors, (128), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-21 00:11:21,060 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:11:23,082 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:11:25,106 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:11:27,132 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:11:27,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:11:27,719 INFO L93 Difference]: Finished difference Result 4319 states and 6363 transitions. [2022-03-21 00:11:27,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-21 00:11:27,719 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 states have internal predecessors, (128), 1 states have call successors, (3), 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 235 [2022-03-21 00:11:27,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:11:27,726 INFO L225 Difference]: With dead ends: 4319 [2022-03-21 00:11:27,726 INFO L226 Difference]: Without dead ends: 2200 [2022-03-21 00:11:27,731 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-21 00:11:27,732 INFO L913 BasicCegarLoop]: 258 mSDtfsCounter, 32 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 5 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-03-21 00:11:27,732 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 653 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 476 Invalid, 3 Unknown, 0 Unchecked, 8.1s Time] [2022-03-21 00:11:27,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2200 states. [2022-03-21 00:11:27,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2200 to 2147. [2022-03-21 00:11:27,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2147 states, 2142 states have (on average 1.4705882352941178) internal successors, (3150), 2142 states have internal predecessors, (3150), 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) [2022-03-21 00:11:27,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2147 states to 2147 states and 3154 transitions. [2022-03-21 00:11:27,887 INFO L78 Accepts]: Start accepts. Automaton has 2147 states and 3154 transitions. Word has length 235 [2022-03-21 00:11:27,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:11:27,888 INFO L478 AbstractCegarLoop]: Abstraction has 2147 states and 3154 transitions. [2022-03-21 00:11:27,888 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 states have internal predecessors, (128), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-21 00:11:27,888 INFO L276 IsEmpty]: Start isEmpty. Operand 2147 states and 3154 transitions. [2022-03-21 00:11:27,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-03-21 00:11:27,892 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:11:27,892 INFO L499 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] [2022-03-21 00:11:27,893 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-03-21 00:11:27,893 INFO L403 AbstractCegarLoop]: === Iteration 40 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:11:27,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:11:27,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1331307238, now seen corresponding path program 1 times [2022-03-21 00:11:27,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:11:27,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1111909027] [2022-03-21 00:11:27,929 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:11:27,929 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:11:27,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1331307238, now seen corresponding path program 2 times [2022-03-21 00:11:27,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:11:27,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394275363] [2022-03-21 00:11:27,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:11:27,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:11:28,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:28,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:11:28,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:28,098 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 374 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2022-03-21 00:11:28,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:11:28,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394275363] [2022-03-21 00:11:28,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394275363] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:11:28,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:11:28,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-21 00:11:28,099 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:11:28,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1111909027] [2022-03-21 00:11:28,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1111909027] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:11:28,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:11:28,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-21 00:11:28,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067412673] [2022-03-21 00:11:28,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:11:28,100 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-21 00:11:28,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:11:28,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-21 00:11:28,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-21 00:11:28,100 INFO L87 Difference]: Start difference. First operand 2147 states and 3154 transitions. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-21 00:11:29,562 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:11:31,273 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:11:33,298 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 [] [2022-03-21 00:11:34,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:11:34,002 INFO L93 Difference]: Finished difference Result 4788 states and 7046 transitions. [2022-03-21 00:11:34,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-21 00:11:34,003 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (3), 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 237 [2022-03-21 00:11:34,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:11:34,008 INFO L225 Difference]: With dead ends: 4788 [2022-03-21 00:11:34,008 INFO L226 Difference]: Without dead ends: 2669 [2022-03-21 00:11:34,012 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-21 00:11:34,012 INFO L913 BasicCegarLoop]: 409 mSDtfsCounter, 161 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-03-21 00:11:34,013 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 603 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 499 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2022-03-21 00:11:34,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2669 states. [2022-03-21 00:11:34,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2669 to 2669. [2022-03-21 00:11:34,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2669 states, 2664 states have (on average 1.4692192192192193) internal successors, (3914), 2664 states have internal predecessors, (3914), 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) [2022-03-21 00:11:34,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2669 states to 2669 states and 3918 transitions. [2022-03-21 00:11:34,251 INFO L78 Accepts]: Start accepts. Automaton has 2669 states and 3918 transitions. Word has length 237 [2022-03-21 00:11:34,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:11:34,251 INFO L478 AbstractCegarLoop]: Abstraction has 2669 states and 3918 transitions. [2022-03-21 00:11:34,251 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-21 00:11:34,251 INFO L276 IsEmpty]: Start isEmpty. Operand 2669 states and 3918 transitions. [2022-03-21 00:11:34,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2022-03-21 00:11:34,269 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:11:34,269 INFO L499 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] [2022-03-21 00:11:34,269 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-03-21 00:11:34,269 INFO L403 AbstractCegarLoop]: === Iteration 41 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:11:34,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:11:34,270 INFO L85 PathProgramCache]: Analyzing trace with hash -160958187, now seen corresponding path program 1 times [2022-03-21 00:11:34,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:11:34,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [210671246] [2022-03-21 00:11:34,305 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:11:34,305 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:11:34,305 INFO L85 PathProgramCache]: Analyzing trace with hash -160958187, now seen corresponding path program 2 times [2022-03-21 00:11:34,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:11:34,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80897442] [2022-03-21 00:11:34,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:11:34,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:11:34,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:34,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:11:34,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:34,468 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 271 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-03-21 00:11:34,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:11:34,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80897442] [2022-03-21 00:11:34,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80897442] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:11:34,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:11:34,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-21 00:11:34,469 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:11:34,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [210671246] [2022-03-21 00:11:34,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [210671246] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:11:34,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:11:34,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-21 00:11:34,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640500409] [2022-03-21 00:11:34,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:11:34,470 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-21 00:11:34,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:11:34,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-21 00:11:34,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-21 00:11:34,472 INFO L87 Difference]: Start difference. First operand 2669 states and 3918 transitions. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 3 states have internal predecessors, (153), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-21 00:11:36,036 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:11:38,064 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:11:40,089 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:11:40,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:11:40,613 INFO L93 Difference]: Finished difference Result 5833 states and 8591 transitions. [2022-03-21 00:11:40,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-21 00:11:40,613 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 3 states have internal predecessors, (153), 1 states have call successors, (3), 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 243 [2022-03-21 00:11:40,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:11:40,618 INFO L225 Difference]: With dead ends: 5833 [2022-03-21 00:11:40,618 INFO L226 Difference]: Without dead ends: 3192 [2022-03-21 00:11:40,622 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-21 00:11:40,622 INFO L913 BasicCegarLoop]: 207 mSDtfsCounter, 170 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 27 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-03-21 00:11:40,622 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 392 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 304 Invalid, 2 Unknown, 0 Unchecked, 5.9s Time] [2022-03-21 00:11:40,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3192 states. [2022-03-21 00:11:40,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3192 to 3192. [2022-03-21 00:11:40,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3192 states, 3187 states have (on average 1.4703482899278317) internal successors, (4686), 3187 states have internal predecessors, (4686), 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) [2022-03-21 00:11:40,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3192 states to 3192 states and 4690 transitions. [2022-03-21 00:11:40,838 INFO L78 Accepts]: Start accepts. Automaton has 3192 states and 4690 transitions. Word has length 243 [2022-03-21 00:11:40,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:11:40,839 INFO L478 AbstractCegarLoop]: Abstraction has 3192 states and 4690 transitions. [2022-03-21 00:11:40,839 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 3 states have internal predecessors, (153), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-21 00:11:40,839 INFO L276 IsEmpty]: Start isEmpty. Operand 3192 states and 4690 transitions. [2022-03-21 00:11:40,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2022-03-21 00:11:40,842 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:11:40,842 INFO L499 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, 1] [2022-03-21 00:11:40,843 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-03-21 00:11:40,843 INFO L403 AbstractCegarLoop]: === Iteration 42 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:11:40,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:11:40,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1929048789, now seen corresponding path program 1 times [2022-03-21 00:11:40,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:11:40,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1109306118] [2022-03-21 00:11:40,872 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:11:40,872 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:11:40,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1929048789, now seen corresponding path program 2 times [2022-03-21 00:11:40,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:11:40,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358796081] [2022-03-21 00:11:40,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:11:40,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:11:40,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:41,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:11:41,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:41,029 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 271 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-03-21 00:11:41,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:11:41,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358796081] [2022-03-21 00:11:41,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358796081] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:11:41,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:11:41,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-21 00:11:41,030 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:11:41,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1109306118] [2022-03-21 00:11:41,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1109306118] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:11:41,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:11:41,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-21 00:11:41,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454523772] [2022-03-21 00:11:41,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:11:41,030 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-21 00:11:41,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:11:41,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-21 00:11:41,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-21 00:11:41,031 INFO L87 Difference]: Start difference. First operand 3192 states and 4690 transitions. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-21 00:11:42,731 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:11:44,758 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:11:46,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:11:46,304 INFO L93 Difference]: Finished difference Result 6879 states and 10135 transitions. [2022-03-21 00:11:46,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-21 00:11:46,305 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (3), 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 245 [2022-03-21 00:11:46,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:11:46,312 INFO L225 Difference]: With dead ends: 6879 [2022-03-21 00:11:46,312 INFO L226 Difference]: Without dead ends: 3715 [2022-03-21 00:11:46,317 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-21 00:11:46,317 INFO L913 BasicCegarLoop]: 206 mSDtfsCounter, 171 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 28 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-03-21 00:11:46,317 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 391 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 305 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2022-03-21 00:11:46,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3715 states. [2022-03-21 00:11:46,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3715 to 3715. [2022-03-21 00:11:46,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3715 states, 3710 states have (on average 1.4714285714285715) internal successors, (5459), 3710 states have internal predecessors, (5459), 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) [2022-03-21 00:11:46,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3715 states to 3715 states and 5463 transitions. [2022-03-21 00:11:46,618 INFO L78 Accepts]: Start accepts. Automaton has 3715 states and 5463 transitions. Word has length 245 [2022-03-21 00:11:46,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:11:46,619 INFO L478 AbstractCegarLoop]: Abstraction has 3715 states and 5463 transitions. [2022-03-21 00:11:46,619 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-21 00:11:46,619 INFO L276 IsEmpty]: Start isEmpty. Operand 3715 states and 5463 transitions. [2022-03-21 00:11:46,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2022-03-21 00:11:46,627 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:11:46,627 INFO L499 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, 1] [2022-03-21 00:11:46,627 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-03-21 00:11:46,627 INFO L403 AbstractCegarLoop]: === Iteration 43 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:11:46,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:11:46,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1863935726, now seen corresponding path program 1 times [2022-03-21 00:11:46,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:11:46,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1134824902] [2022-03-21 00:11:46,681 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:11:46,681 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:11:46,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1863935726, now seen corresponding path program 2 times [2022-03-21 00:11:46,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:11:46,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469499451] [2022-03-21 00:11:46,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:11:46,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:11:46,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:46,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:11:46,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:46,865 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 181 proven. 0 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2022-03-21 00:11:46,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:11:46,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469499451] [2022-03-21 00:11:46,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469499451] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:11:46,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:11:46,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-21 00:11:46,866 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:11:46,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1134824902] [2022-03-21 00:11:46,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1134824902] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:11:46,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:11:46,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-21 00:11:46,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935567205] [2022-03-21 00:11:46,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:11:46,868 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-21 00:11:46,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:11:46,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-21 00:11:46,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-21 00:11:46,869 INFO L87 Difference]: Start difference. First operand 3715 states and 5463 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-21 00:11:48,879 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 [] [2022-03-21 00:11:49,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:11:49,749 INFO L93 Difference]: Finished difference Result 7917 states and 11668 transitions. [2022-03-21 00:11:49,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-21 00:11:49,750 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 277 [2022-03-21 00:11:49,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:11:49,758 INFO L225 Difference]: With dead ends: 7917 [2022-03-21 00:11:49,759 INFO L226 Difference]: Without dead ends: 4230 [2022-03-21 00:11:49,767 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-21 00:11:49,768 INFO L913 BasicCegarLoop]: 406 mSDtfsCounter, 152 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-03-21 00:11:49,768 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 600 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 486 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-03-21 00:11:49,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4230 states. [2022-03-21 00:11:50,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4230 to 4230. [2022-03-21 00:11:50,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4230 states, 4225 states have (on average 1.4710059171597634) internal successors, (6215), 4225 states have internal predecessors, (6215), 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) [2022-03-21 00:11:50,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4230 states to 4230 states and 6219 transitions. [2022-03-21 00:11:50,179 INFO L78 Accepts]: Start accepts. Automaton has 4230 states and 6219 transitions. Word has length 277 [2022-03-21 00:11:50,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:11:50,179 INFO L478 AbstractCegarLoop]: Abstraction has 4230 states and 6219 transitions. [2022-03-21 00:11:50,179 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-21 00:11:50,179 INFO L276 IsEmpty]: Start isEmpty. Operand 4230 states and 6219 transitions. [2022-03-21 00:11:50,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2022-03-21 00:11:50,186 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:11:50,186 INFO L499 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, 1] [2022-03-21 00:11:50,186 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-03-21 00:11:50,186 INFO L403 AbstractCegarLoop]: === Iteration 44 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:11:50,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:11:50,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1533638292, now seen corresponding path program 1 times [2022-03-21 00:11:50,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:11:50,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1011852152] [2022-03-21 00:11:50,234 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:11:50,235 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:11:50,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1533638292, now seen corresponding path program 2 times [2022-03-21 00:11:50,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:11:50,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297005949] [2022-03-21 00:11:50,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:11:50,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:11:50,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:50,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:11:50,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:50,418 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 330 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-03-21 00:11:50,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:11:50,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297005949] [2022-03-21 00:11:50,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297005949] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:11:50,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:11:50,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-21 00:11:50,419 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:11:50,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1011852152] [2022-03-21 00:11:50,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1011852152] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:11:50,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:11:50,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-21 00:11:50,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936403775] [2022-03-21 00:11:50,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:11:50,420 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-21 00:11:50,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:11:50,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-21 00:11:50,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-21 00:11:50,421 INFO L87 Difference]: Start difference. First operand 4230 states and 6219 transitions. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-21 00:11:52,435 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 [] [2022-03-21 00:11:53,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:11:53,358 INFO L93 Difference]: Finished difference Result 8922 states and 13145 transitions. [2022-03-21 00:11:53,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-21 00:11:53,358 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (3), 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 277 [2022-03-21 00:11:53,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:11:53,369 INFO L225 Difference]: With dead ends: 8922 [2022-03-21 00:11:53,369 INFO L226 Difference]: Without dead ends: 4720 [2022-03-21 00:11:53,377 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-21 00:11:53,378 INFO L913 BasicCegarLoop]: 409 mSDtfsCounter, 161 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 23 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-03-21 00:11:53,378 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 603 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 497 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-03-21 00:11:53,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4720 states. [2022-03-21 00:11:53,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4720 to 4720. [2022-03-21 00:11:53,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4720 states, 4715 states have (on average 1.4702014846235418) internal successors, (6932), 4715 states have internal predecessors, (6932), 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) [2022-03-21 00:11:53,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4720 states to 4720 states and 6936 transitions. [2022-03-21 00:11:53,825 INFO L78 Accepts]: Start accepts. Automaton has 4720 states and 6936 transitions. Word has length 277 [2022-03-21 00:11:53,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:11:53,825 INFO L478 AbstractCegarLoop]: Abstraction has 4720 states and 6936 transitions. [2022-03-21 00:11:53,825 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-21 00:11:53,825 INFO L276 IsEmpty]: Start isEmpty. Operand 4720 states and 6936 transitions. [2022-03-21 00:11:53,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2022-03-21 00:11:53,833 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:11:53,833 INFO L499 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, 1] [2022-03-21 00:11:53,833 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-03-21 00:11:53,833 INFO L403 AbstractCegarLoop]: === Iteration 45 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:11:53,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:11:53,833 INFO L85 PathProgramCache]: Analyzing trace with hash 28726506, now seen corresponding path program 1 times [2022-03-21 00:11:53,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:11:53,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1745355306] [2022-03-21 00:12:06,269 WARN L232 SmtUtils]: Spent 5.86s 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) [2022-03-21 00:12:18,814 WARN L232 SmtUtils]: Spent 5.79s 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) [2022-03-21 00:12:20,435 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:12:20,436 INFO L85 PathProgramCache]: Analyzing trace with hash 28726506, now seen corresponding path program 2 times [2022-03-21 00:12:20,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:12:20,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563876845] [2022-03-21 00:12:20,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:12:20,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:12:20,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:20,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:12:20,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:20,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1161 backedges. 434 proven. 0 refuted. 0 times theorem prover too weak. 727 trivial. 0 not checked. [2022-03-21 00:12:20,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:12:20,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563876845] [2022-03-21 00:12:20,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563876845] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:12:20,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:12:20,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-21 00:12:20,663 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:12:20,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1745355306] [2022-03-21 00:12:20,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1745355306] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:12:20,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:12:20,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-21 00:12:20,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266118487] [2022-03-21 00:12:20,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:12:20,663 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-21 00:12:20,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:12:20,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-21 00:12:20,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-21 00:12:20,664 INFO L87 Difference]: Start difference. First operand 4720 states and 6936 transitions. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-21 00:12:22,270 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:12:23,938 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:12:24,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:12:24,639 INFO L93 Difference]: Finished difference Result 9935 states and 14627 transitions. [2022-03-21 00:12:24,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-21 00:12:24,639 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (3), 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 352 [2022-03-21 00:12:24,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:12:24,650 INFO L225 Difference]: With dead ends: 9935 [2022-03-21 00:12:24,650 INFO L226 Difference]: Without dead ends: 5243 [2022-03-21 00:12:24,661 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-21 00:12:24,662 INFO L913 BasicCegarLoop]: 203 mSDtfsCounter, 160 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-03-21 00:12:24,662 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 388 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-03-21 00:12:24,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5243 states. [2022-03-21 00:12:25,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5243 to 5243. [2022-03-21 00:12:25,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5243 states, 5238 states have (on average 1.4715540282550592) internal successors, (7708), 5238 states have internal predecessors, (7708), 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) [2022-03-21 00:12:25,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5243 states to 5243 states and 7712 transitions. [2022-03-21 00:12:25,218 INFO L78 Accepts]: Start accepts. Automaton has 5243 states and 7712 transitions. Word has length 352 [2022-03-21 00:12:25,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:12:25,219 INFO L478 AbstractCegarLoop]: Abstraction has 5243 states and 7712 transitions. [2022-03-21 00:12:25,219 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-21 00:12:25,219 INFO L276 IsEmpty]: Start isEmpty. Operand 5243 states and 7712 transitions. [2022-03-21 00:12:25,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2022-03-21 00:12:25,229 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:12:25,230 INFO L499 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, 1] [2022-03-21 00:12:25,230 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-03-21 00:12:25,230 INFO L403 AbstractCegarLoop]: === Iteration 46 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:12:25,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:12:25,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1376682118, now seen corresponding path program 1 times [2022-03-21 00:12:25,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:12:25,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [473320025] [2022-03-21 00:12:38,300 WARN L232 SmtUtils]: Spent 5.36s 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) [2022-03-21 00:12:52,378 WARN L232 SmtUtils]: Spent 5.63s 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) [2022-03-21 00:12:53,895 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:12:53,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1376682118, now seen corresponding path program 2 times [2022-03-21 00:12:53,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:12:53,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074783402] [2022-03-21 00:12:53,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:12:53,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:12:53,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:54,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:12:54,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:54,100 INFO L134 CoverageAnalysis]: Checked inductivity of 1443 backedges. 501 proven. 0 refuted. 0 times theorem prover too weak. 942 trivial. 0 not checked. [2022-03-21 00:12:54,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:12:54,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074783402] [2022-03-21 00:12:54,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074783402] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:12:54,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:12:54,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-21 00:12:54,101 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:12:54,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [473320025] [2022-03-21 00:12:54,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [473320025] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:12:54,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:12:54,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-21 00:12:54,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51565405] [2022-03-21 00:12:54,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:12:54,102 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-21 00:12:54,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:12:54,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-21 00:12:54,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-21 00:12:54,102 INFO L87 Difference]: Start difference. First operand 5243 states and 7712 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-21 00:12:55,136 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:12:56,637 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:12:58,660 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 [] [2022-03-21 00:12:59,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:12:59,385 INFO L93 Difference]: Finished difference Result 10981 states and 16179 transitions. [2022-03-21 00:12:59,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-21 00:12:59,386 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (3), 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 393 [2022-03-21 00:12:59,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:12:59,394 INFO L225 Difference]: With dead ends: 10981 [2022-03-21 00:12:59,394 INFO L226 Difference]: Without dead ends: 5766 [2022-03-21 00:12:59,404 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-21 00:12:59,404 INFO L913 BasicCegarLoop]: 202 mSDtfsCounter, 161 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 32 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-03-21 00:12:59,405 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 387 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 305 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2022-03-21 00:12:59,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5766 states. [2022-03-21 00:12:59,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5766 to 5766. [2022-03-21 00:12:59,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5766 states, 5761 states have (on average 1.4728345773303246) internal successors, (8485), 5761 states have internal predecessors, (8485), 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) [2022-03-21 00:12:59,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5766 states to 5766 states and 8489 transitions. [2022-03-21 00:12:59,926 INFO L78 Accepts]: Start accepts. Automaton has 5766 states and 8489 transitions. Word has length 393 [2022-03-21 00:12:59,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:12:59,927 INFO L478 AbstractCegarLoop]: Abstraction has 5766 states and 8489 transitions. [2022-03-21 00:12:59,927 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-21 00:12:59,927 INFO L276 IsEmpty]: Start isEmpty. Operand 5766 states and 8489 transitions. [2022-03-21 00:12:59,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2022-03-21 00:12:59,935 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:12:59,935 INFO L499 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, 1] [2022-03-21 00:12:59,936 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-03-21 00:12:59,936 INFO L403 AbstractCegarLoop]: === Iteration 47 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:12:59,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:12:59,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1414765987, now seen corresponding path program 1 times [2022-03-21 00:12:59,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:12:59,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1938036035] [2022-03-21 00:12:59,995 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:12:59,995 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:12:59,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1414765987, now seen corresponding path program 2 times [2022-03-21 00:12:59,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:12:59,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960075108] [2022-03-21 00:12:59,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:12:59,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:13:00,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:00,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:13:00,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:00,198 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 285 proven. 0 refuted. 0 times theorem prover too weak. 1160 trivial. 0 not checked. [2022-03-21 00:13:00,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:13:00,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960075108] [2022-03-21 00:13:00,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960075108] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:13:00,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:13:00,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-21 00:13:00,198 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:13:00,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1938036035] [2022-03-21 00:13:00,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1938036035] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:13:00,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:13:00,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-21 00:13:00,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676244614] [2022-03-21 00:13:00,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:13:00,199 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-21 00:13:00,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:13:00,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-21 00:13:00,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-21 00:13:00,200 INFO L87 Difference]: Start difference. First operand 5766 states and 8489 transitions. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-21 00:13:02,215 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 [] [2022-03-21 00:13:03,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:13:03,241 INFO L93 Difference]: Finished difference Result 12020 states and 17722 transitions. [2022-03-21 00:13:03,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-21 00:13:03,241 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (3), 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 400 [2022-03-21 00:13:03,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:13:03,255 INFO L225 Difference]: With dead ends: 12020 [2022-03-21 00:13:03,255 INFO L226 Difference]: Without dead ends: 6282 [2022-03-21 00:13:03,269 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-21 00:13:03,269 INFO L913 BasicCegarLoop]: 406 mSDtfsCounter, 150 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 20 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-03-21 00:13:03,270 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 600 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 488 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-03-21 00:13:03,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6282 states. [2022-03-21 00:13:03,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6282 to 6282. [2022-03-21 00:13:03,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6282 states, 6277 states have (on average 1.472359407360204) internal successors, (9242), 6277 states have internal predecessors, (9242), 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) [2022-03-21 00:13:03,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6282 states to 6282 states and 9246 transitions. [2022-03-21 00:13:03,793 INFO L78 Accepts]: Start accepts. Automaton has 6282 states and 9246 transitions. Word has length 400 [2022-03-21 00:13:03,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:13:03,793 INFO L478 AbstractCegarLoop]: Abstraction has 6282 states and 9246 transitions. [2022-03-21 00:13:03,793 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-21 00:13:03,793 INFO L276 IsEmpty]: Start isEmpty. Operand 6282 states and 9246 transitions. [2022-03-21 00:13:03,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2022-03-21 00:13:03,804 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:13:03,804 INFO L499 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, 1] [2022-03-21 00:13:03,804 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-03-21 00:13:03,805 INFO L403 AbstractCegarLoop]: === Iteration 48 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:13:03,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:13:03,805 INFO L85 PathProgramCache]: Analyzing trace with hash 6452395, now seen corresponding path program 1 times [2022-03-21 00:13:03,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:13:03,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1505249346] [2022-03-21 00:13:20,922 WARN L232 SmtUtils]: Spent 5.43s 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) [2022-03-21 00:13:38,530 WARN L232 SmtUtils]: Spent 6.26s 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) [2022-03-21 00:13:40,146 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:13:40,147 INFO L85 PathProgramCache]: Analyzing trace with hash 6452395, now seen corresponding path program 2 times [2022-03-21 00:13:40,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:13:40,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952393841] [2022-03-21 00:13:40,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:13:40,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:13:40,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:40,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:13:40,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:40,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2119 backedges. 641 proven. 0 refuted. 0 times theorem prover too weak. 1478 trivial. 0 not checked. [2022-03-21 00:13:40,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:13:40,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952393841] [2022-03-21 00:13:40,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952393841] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:13:40,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:13:40,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-21 00:13:40,390 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:13:40,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1505249346] [2022-03-21 00:13:40,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1505249346] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:13:40,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:13:40,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-21 00:13:40,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378573245] [2022-03-21 00:13:40,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:13:40,390 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-21 00:13:40,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:13:40,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-21 00:13:40,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-21 00:13:40,391 INFO L87 Difference]: Start difference. First operand 6282 states and 9246 transitions. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-21 00:13:42,398 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 [] [2022-03-21 00:13:43,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:13:43,285 INFO L93 Difference]: Finished difference Result 13059 states and 19247 transitions. [2022-03-21 00:13:43,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-21 00:13:43,285 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (3), 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 476 [2022-03-21 00:13:43,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:13:43,295 INFO L225 Difference]: With dead ends: 13059 [2022-03-21 00:13:43,295 INFO L226 Difference]: Without dead ends: 6805 [2022-03-21 00:13:43,306 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-21 00:13:43,307 INFO L913 BasicCegarLoop]: 200 mSDtfsCounter, 160 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 34 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-03-21 00:13:43,307 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 385 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 303 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-03-21 00:13:43,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6805 states. [2022-03-21 00:13:43,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6805 to 6805. [2022-03-21 00:13:43,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6805 states, 6800 states have (on average 1.4736764705882353) internal successors, (10021), 6800 states have internal predecessors, (10021), 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) [2022-03-21 00:13:43,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6805 states to 6805 states and 10025 transitions. [2022-03-21 00:13:43,910 INFO L78 Accepts]: Start accepts. Automaton has 6805 states and 10025 transitions. Word has length 476 [2022-03-21 00:13:43,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:13:43,911 INFO L478 AbstractCegarLoop]: Abstraction has 6805 states and 10025 transitions. [2022-03-21 00:13:43,911 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-21 00:13:43,911 INFO L276 IsEmpty]: Start isEmpty. Operand 6805 states and 10025 transitions. [2022-03-21 00:13:43,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2022-03-21 00:13:43,922 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:13:43,922 INFO L499 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 13, 13, 12, 12, 11, 11, 10, 10, 10, 10, 10, 9, 9, 8, 8, 7, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:13:43,922 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-03-21 00:13:43,922 INFO L403 AbstractCegarLoop]: === Iteration 49 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:13:43,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:13:43,922 INFO L85 PathProgramCache]: Analyzing trace with hash -212425554, now seen corresponding path program 1 times [2022-03-21 00:13:43,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:13:43,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [125969546] [2022-03-21 00:14:01,790 WARN L232 SmtUtils]: Spent 5.11s 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) [2022-03-21 00:14:16,604 WARN L232 SmtUtils]: Spent 6.72s 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) [2022-03-21 00:14:24,602 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:14:24,602 INFO L85 PathProgramCache]: Analyzing trace with hash -212425554, now seen corresponding path program 2 times [2022-03-21 00:14:24,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:14:24,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947338670] [2022-03-21 00:14:24,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:14:24,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:14:24,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:14:24,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:14:24,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:14:24,884 INFO L134 CoverageAnalysis]: Checked inductivity of 2512 backedges. 744 proven. 7 refuted. 0 times theorem prover too weak. 1761 trivial. 0 not checked. [2022-03-21 00:14:24,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:14:24,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947338670] [2022-03-21 00:14:24,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947338670] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:14:24,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631812260] [2022-03-21 00:14:24,885 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:14:24,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:14:24,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:14:24,891 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-21 00:14:24,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-21 00:14:26,097 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:14:26,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:14:26,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 41 conjunts are in the unsatisfiable core [2022-03-21 00:14:26,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:14:26,169 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-03-21 00:14:26,173 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-03-21 00:14:26,243 INFO L356 Elim1Store]: treesize reduction 84, result has 18.4 percent of original size [2022-03-21 00:14:26,244 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 31 [2022-03-21 00:14:26,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-21 00:14:26,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-21 00:14:26,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-21 00:14:26,255 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 31 [2022-03-21 00:14:26,302 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-03-21 00:14:26,303 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-03-21 00:14:26,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-21 00:14:26,310 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-03-21 00:14:26,328 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-03-21 00:14:26,331 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-03-21 00:14:27,006 INFO L134 CoverageAnalysis]: Checked inductivity of 2512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2512 trivial. 0 not checked. [2022-03-21 00:14:27,007 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:14:27,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631812260] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:14:27,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:14:27,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2022-03-21 00:14:27,008 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:14:27,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [125969546] [2022-03-21 00:14:27,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [125969546] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:14:27,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:14:27,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-21 00:14:27,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968470659] [2022-03-21 00:14:27,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:14:27,009 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-21 00:14:27,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:14:27,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-21 00:14:27,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-03-21 00:14:27,010 INFO L87 Difference]: Start difference. First operand 6805 states and 10025 transitions. Second operand has 6 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-21 00:14:29,027 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:14:31,056 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:14:32,423 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:14:33,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:14:33,306 INFO L93 Difference]: Finished difference Result 13603 states and 20042 transitions. [2022-03-21 00:14:33,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-21 00:14:33,307 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 2 states have call successors, (3), 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 518 [2022-03-21 00:14:33,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:14:33,329 INFO L225 Difference]: With dead ends: 13603 [2022-03-21 00:14:33,330 INFO L226 Difference]: Without dead ends: 6805 [2022-03-21 00:14:33,345 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 529 GetRequests, 518 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-03-21 00:14:33,346 INFO L913 BasicCegarLoop]: 235 mSDtfsCounter, 7 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 964 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-03-21 00:14:33,346 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 964 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 228 Invalid, 2 Unknown, 0 Unchecked, 5.7s Time] [2022-03-21 00:14:33,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6805 states. [2022-03-21 00:14:33,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6805 to 6805. [2022-03-21 00:14:33,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6805 states, 6800 states have (on average 1.473529411764706) internal successors, (10020), 6800 states have internal predecessors, (10020), 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) [2022-03-21 00:14:33,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6805 states to 6805 states and 10024 transitions. [2022-03-21 00:14:33,941 INFO L78 Accepts]: Start accepts. Automaton has 6805 states and 10024 transitions. Word has length 518 [2022-03-21 00:14:33,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:14:33,942 INFO L478 AbstractCegarLoop]: Abstraction has 6805 states and 10024 transitions. [2022-03-21 00:14:33,942 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-21 00:14:33,942 INFO L276 IsEmpty]: Start isEmpty. Operand 6805 states and 10024 transitions. [2022-03-21 00:14:33,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2022-03-21 00:14:33,953 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:14:33,953 INFO L499 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 13, 13, 12, 12, 11, 11, 10, 10, 10, 10, 10, 9, 9, 8, 8, 7, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:14:33,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-21 00:14:34,154 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2022-03-21 00:14:34,154 INFO L403 AbstractCegarLoop]: === Iteration 50 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:14:34,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:14:34,155 INFO L85 PathProgramCache]: Analyzing trace with hash -397534100, now seen corresponding path program 1 times [2022-03-21 00:14:34,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:14:34,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [913148448] [2022-03-21 00:14:52,471 WARN L232 SmtUtils]: Spent 5.55s 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) [2022-03-21 00:15:07,732 WARN L232 SmtUtils]: Spent 7.36s 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) [2022-03-21 00:15:15,434 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:15:15,435 INFO L85 PathProgramCache]: Analyzing trace with hash -397534100, now seen corresponding path program 2 times [2022-03-21 00:15:15,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:15:15,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857479590] [2022-03-21 00:15:15,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:15:15,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:15:15,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:15:15,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:15:15,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:15:15,713 INFO L134 CoverageAnalysis]: Checked inductivity of 2512 backedges. 744 proven. 7 refuted. 0 times theorem prover too weak. 1761 trivial. 0 not checked. [2022-03-21 00:15:15,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:15:15,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857479590] [2022-03-21 00:15:15,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857479590] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:15:15,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608528577] [2022-03-21 00:15:15,713 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:15:15,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:15:15,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:15:15,714 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-21 00:15:15,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-21 00:15:37,372 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-21 00:15:37,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:15:37,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 2448 conjuncts, 2 conjunts are in the unsatisfiable core [2022-03-21 00:15:37,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:15:38,023 INFO L134 CoverageAnalysis]: Checked inductivity of 2512 backedges. 707 proven. 0 refuted. 0 times theorem prover too weak. 1805 trivial. 0 not checked. [2022-03-21 00:15:38,023 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:15:38,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608528577] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:15:38,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:15:38,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-03-21 00:15:38,024 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:15:38,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [913148448] [2022-03-21 00:15:38,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [913148448] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:15:38,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:15:38,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-21 00:15:38,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23532665] [2022-03-21 00:15:38,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:15:38,026 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-21 00:15:38,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:15:38,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-21 00:15:38,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-03-21 00:15:38,027 INFO L87 Difference]: Start difference. First operand 6805 states and 10024 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-21 00:15:38,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:15:38,802 INFO L93 Difference]: Finished difference Result 14105 states and 20804 transitions. [2022-03-21 00:15:38,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-21 00:15:38,803 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 1 states have call successors, (3), 1 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 518 [2022-03-21 00:15:38,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:15:38,815 INFO L225 Difference]: With dead ends: 14105 [2022-03-21 00:15:38,816 INFO L226 Difference]: Without dead ends: 7328 [2022-03-21 00:15:38,828 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 521 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-03-21 00:15:38,829 INFO L913 BasicCegarLoop]: 201 mSDtfsCounter, 161 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-21 00:15:38,829 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 385 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-21 00:15:38,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7328 states. [2022-03-21 00:15:39,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7328 to 7328. [2022-03-21 00:15:39,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7328 states, 7323 states have (on average 1.474805407619828) internal successors, (10800), 7323 states have internal predecessors, (10800), 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) [2022-03-21 00:15:39,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7328 states to 7328 states and 10804 transitions. [2022-03-21 00:15:39,405 INFO L78 Accepts]: Start accepts. Automaton has 7328 states and 10804 transitions. Word has length 518 [2022-03-21 00:15:39,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:15:39,405 INFO L478 AbstractCegarLoop]: Abstraction has 7328 states and 10804 transitions. [2022-03-21 00:15:39,406 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-21 00:15:39,406 INFO L276 IsEmpty]: Start isEmpty. Operand 7328 states and 10804 transitions. [2022-03-21 00:15:39,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2022-03-21 00:15:39,416 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:15:39,416 INFO L499 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 13, 13, 12, 12, 11, 11, 10, 10, 10, 10, 10, 9, 9, 8, 8, 7, 7, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:15:39,452 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-03-21 00:15:39,627 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-03-21 00:15:39,628 INFO L403 AbstractCegarLoop]: === Iteration 51 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:15:39,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:15:39,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1230942025, now seen corresponding path program 1 times [2022-03-21 00:15:39,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:15:39,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [468551825] [2022-03-21 00:15:56,845 WARN L232 SmtUtils]: Spent 5.05s 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) [2022-03-21 00:16:12,284 WARN L232 SmtUtils]: Spent 6.48s 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) [2022-03-21 00:16:19,590 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:16:19,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1230942025, now seen corresponding path program 2 times [2022-03-21 00:16:19,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:16:19,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180754587] [2022-03-21 00:16:19,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:16:19,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:16:19,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:16:19,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:16:19,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:16:19,875 INFO L134 CoverageAnalysis]: Checked inductivity of 2528 backedges. 1473 proven. 0 refuted. 0 times theorem prover too weak. 1055 trivial. 0 not checked. [2022-03-21 00:16:19,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:16:19,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180754587] [2022-03-21 00:16:19,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180754587] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:16:19,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:16:19,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:16:19,877 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:16:19,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [468551825] [2022-03-21 00:16:19,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [468551825] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:16:19,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:16:19,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:16:19,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696955849] [2022-03-21 00:16:19,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:16:19,878 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-21 00:16:19,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:16:19,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-21 00:16:19,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-21 00:16:19,879 INFO L87 Difference]: Start difference. First operand 7328 states and 10804 transitions. Second operand has 5 states, 5 states have (on average 39.8) internal successors, (199), 4 states have internal predecessors, (199), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-21 00:16:21,196 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:16:23,217 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:16:25,243 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:16:27,265 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:16:28,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:16:28,500 INFO L93 Difference]: Finished difference Result 15664 states and 23061 transitions. [2022-03-21 00:16:28,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-21 00:16:28,501 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.8) internal successors, (199), 4 states have internal predecessors, (199), 1 states have call successors, (3), 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 526 [2022-03-21 00:16:28,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:16:28,514 INFO L225 Difference]: With dead ends: 15664 [2022-03-21 00:16:28,514 INFO L226 Difference]: Without dead ends: 8364 [2022-03-21 00:16:28,523 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-21 00:16:28,523 INFO L913 BasicCegarLoop]: 283 mSDtfsCounter, 56 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 6 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-03-21 00:16:28,523 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 703 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 579 Invalid, 3 Unknown, 0 Unchecked, 7.9s Time] [2022-03-21 00:16:28,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8364 states. [2022-03-21 00:16:29,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8364 to 7902. [2022-03-21 00:16:29,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7902 states, 7897 states have (on average 1.4757502849183235) internal successors, (11654), 7897 states have internal predecessors, (11654), 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) [2022-03-21 00:16:29,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7902 states to 7902 states and 11658 transitions. [2022-03-21 00:16:29,208 INFO L78 Accepts]: Start accepts. Automaton has 7902 states and 11658 transitions. Word has length 526 [2022-03-21 00:16:29,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:16:29,209 INFO L478 AbstractCegarLoop]: Abstraction has 7902 states and 11658 transitions. [2022-03-21 00:16:29,209 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.8) internal successors, (199), 4 states have internal predecessors, (199), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-21 00:16:29,209 INFO L276 IsEmpty]: Start isEmpty. Operand 7902 states and 11658 transitions. [2022-03-21 00:16:29,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2022-03-21 00:16:29,220 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:16:29,220 INFO L499 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 13, 13, 12, 12, 11, 11, 10, 10, 10, 10, 10, 9, 9, 8, 8, 7, 7, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:16:29,221 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-03-21 00:16:29,221 INFO L403 AbstractCegarLoop]: === Iteration 52 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:16:29,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:16:29,221 INFO L85 PathProgramCache]: Analyzing trace with hash 439132237, now seen corresponding path program 1 times [2022-03-21 00:16:29,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:16:29,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1866978922] [2022-03-21 00:16:48,206 WARN L232 SmtUtils]: Spent 5.53s 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) [2022-03-21 00:17:04,210 WARN L232 SmtUtils]: Spent 5.93s 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) [2022-03-21 00:17:11,818 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:17:11,818 INFO L85 PathProgramCache]: Analyzing trace with hash 439132237, now seen corresponding path program 2 times [2022-03-21 00:17:11,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:17:11,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731054464] [2022-03-21 00:17:11,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:17:11,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:17:11,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:17:12,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:17:12,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:17:12,095 INFO L134 CoverageAnalysis]: Checked inductivity of 2528 backedges. 393 proven. 0 refuted. 0 times theorem prover too weak. 2135 trivial. 0 not checked. [2022-03-21 00:17:12,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:17:12,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731054464] [2022-03-21 00:17:12,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731054464] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:17:12,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:17:12,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-21 00:17:12,096 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:17:12,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1866978922] [2022-03-21 00:17:12,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1866978922] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:17:12,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:17:12,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-21 00:17:12,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565931267] [2022-03-21 00:17:12,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:17:12,097 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-21 00:17:12,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:17:12,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-21 00:17:12,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-21 00:17:12,098 INFO L87 Difference]: Start difference. First operand 7902 states and 11658 transitions. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-21 00:17:14,110 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 [] [2022-03-21 00:17:15,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:17:15,433 INFO L93 Difference]: Finished difference Result 16334 states and 24124 transitions. [2022-03-21 00:17:15,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-21 00:17:15,434 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (3), 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 526 [2022-03-21 00:17:15,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:17:15,451 INFO L225 Difference]: With dead ends: 16334 [2022-03-21 00:17:15,451 INFO L226 Difference]: Without dead ends: 8460 [2022-03-21 00:17:15,470 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-21 00:17:15,472 INFO L913 BasicCegarLoop]: 405 mSDtfsCounter, 150 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 21 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-03-21 00:17:15,472 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 598 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 489 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2022-03-21 00:17:15,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8460 states. [2022-03-21 00:17:16,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8460 to 8460. [2022-03-21 00:17:16,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8460 states, 8455 states have (on average 1.4752217622708457) internal successors, (12473), 8455 states have internal predecessors, (12473), 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) [2022-03-21 00:17:16,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8460 states to 8460 states and 12477 transitions. [2022-03-21 00:17:16,233 INFO L78 Accepts]: Start accepts. Automaton has 8460 states and 12477 transitions. Word has length 526 [2022-03-21 00:17:16,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:17:16,234 INFO L478 AbstractCegarLoop]: Abstraction has 8460 states and 12477 transitions. [2022-03-21 00:17:16,234 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-21 00:17:16,234 INFO L276 IsEmpty]: Start isEmpty. Operand 8460 states and 12477 transitions. [2022-03-21 00:17:16,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 604 [2022-03-21 00:17:16,247 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:17:16,247 INFO L499 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 15, 15, 14, 14, 13, 13, 12, 12, 12, 12, 12, 11, 11, 10, 10, 9, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:17:16,247 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-03-21 00:17:16,247 INFO L403 AbstractCegarLoop]: === Iteration 53 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:17:16,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:17:16,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1828273772, now seen corresponding path program 1 times [2022-03-21 00:17:16,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:17:16,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1154600958] [2022-03-21 00:18:39,031 WARN L232 SmtUtils]: Spent 1.38m on a formula simplification. DAG size of input: 697 DAG size of output: 466 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-21 00:20:05,410 WARN L232 SmtUtils]: Spent 1.35m on a formula simplification. DAG size of input: 688 DAG size of output: 466 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-21 00:20:30,605 WARN L232 SmtUtils]: Spent 5.11s 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) [2022-03-21 00:20:45,577 WARN L232 SmtUtils]: Spent 5.61s 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)