/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/openssl/s3_clnt.blast.02.i.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-5d317bd [2022-03-19 07:02:49,420 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-19 07:02:49,444 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-19 07:02:49,471 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-19 07:02:49,471 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-19 07:02:49,472 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-19 07:02:49,473 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-19 07:02:49,474 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-19 07:02:49,474 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-19 07:02:49,475 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-19 07:02:49,475 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-19 07:02:49,476 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-19 07:02:49,476 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-19 07:02:49,477 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-19 07:02:49,477 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-19 07:02:49,478 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-19 07:02:49,478 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-19 07:02:49,479 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-19 07:02:49,480 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-19 07:02:49,481 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-19 07:02:49,482 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-19 07:02:49,486 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-19 07:02:49,488 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-19 07:02:49,489 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-19 07:02:49,492 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-19 07:02:49,498 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-19 07:02:49,502 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-19 07:02:49,505 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-19 07:02:49,508 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-19 07:02:49,508 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-03-19 07:02:49,518 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-19 07:02:49,518 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-19 07:02:49,520 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-19 07:02:49,520 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-19 07:02:49,520 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-19 07:02:49,520 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-19 07:02:49,520 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-19 07:02:49,520 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-19 07:02:49,520 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-19 07:02:49,521 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-19 07:02:49,521 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-19 07:02:49,521 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-19 07:02:49,521 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-19 07:02:49,521 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-19 07:02:49,521 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-19 07:02:49,522 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-19 07:02:49,522 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-19 07:02:49,522 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-19 07:02:49,522 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-19 07:02:49,522 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-19 07:02:49,522 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-19 07:02:49,522 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-03-19 07:02:49,522 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-03-19 07:02:49,522 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-19 07:02:49,522 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-03-19 07:02:49,522 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-19 07:02:49,683 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-19 07:02:49,700 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-19 07:02:49,701 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-19 07:02:49,702 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-19 07:02:49,702 INFO L275 PluginConnector]: CDTParser initialized [2022-03-19 07:02:49,703 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/openssl/s3_clnt.blast.02.i.cil-2.c [2022-03-19 07:02:49,777 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6fed5251/e1cdede330884a009c9b520db8235b95/FLAG613c5a002 [2022-03-19 07:02:50,207 INFO L306 CDTParser]: Found 1 translation units. [2022-03-19 07:02:50,207 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/openssl/s3_clnt.blast.02.i.cil-2.c [2022-03-19 07:02:50,228 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6fed5251/e1cdede330884a009c9b520db8235b95/FLAG613c5a002 [2022-03-19 07:02:50,254 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6fed5251/e1cdede330884a009c9b520db8235b95 [2022-03-19 07:02:50,256 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-19 07:02:50,257 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-19 07:02:50,260 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-19 07:02:50,260 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-19 07:02:50,263 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-19 07:02:50,263 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 07:02:50" (1/1) ... [2022-03-19 07:02:50,264 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@146e73e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 07:02:50, skipping insertion in model container [2022-03-19 07:02:50,264 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 07:02:50" (1/1) ... [2022-03-19 07:02:50,269 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-19 07:02:50,305 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-19 07:02:50,599 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/openssl/s3_clnt.blast.02.i.cil-2.c[65398,65411] [2022-03-19 07:02:50,605 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-19 07:02:50,614 INFO L203 MainTranslator]: Completed pre-run [2022-03-19 07:02:50,689 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/openssl/s3_clnt.blast.02.i.cil-2.c[65398,65411] [2022-03-19 07:02:50,691 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-19 07:02:50,702 INFO L208 MainTranslator]: Completed translation [2022-03-19 07:02:50,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 07:02:50 WrapperNode [2022-03-19 07:02:50,703 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-19 07:02:50,704 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-19 07:02:50,704 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-19 07:02:50,704 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-19 07:02:50,712 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 07:02:50" (1/1) ... [2022-03-19 07:02:50,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 07:02:50" (1/1) ... [2022-03-19 07:02:50,743 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 07:02:50" (1/1) ... [2022-03-19 07:02:50,744 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 07:02:50" (1/1) ... [2022-03-19 07:02:50,780 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 07:02:50" (1/1) ... [2022-03-19 07:02:50,785 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 07:02:50" (1/1) ... [2022-03-19 07:02:50,787 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 07:02:50" (1/1) ... [2022-03-19 07:02:50,791 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-19 07:02:50,803 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-19 07:02:50,804 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-19 07:02:50,804 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-19 07:02:50,805 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 07:02:50" (1/1) ... [2022-03-19 07:02:50,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-19 07:02:50,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 07:02:50,830 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-19 07:02:50,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-19 07:02:50,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-19 07:02:50,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-19 07:02:50,864 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-19 07:02:50,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_get_client_method [2022-03-19 07:02:50,864 INFO L138 BoogieDeclarations]: Found implementation of procedure SSLv3_client_method [2022-03-19 07:02:50,864 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-19 07:02:50,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_connect [2022-03-19 07:02:50,864 INFO L138 BoogieDeclarations]: Found implementation of procedure sslv3_base_method [2022-03-19 07:02:50,865 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-03-19 07:02:50,865 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-03-19 07:02:50,865 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-19 07:02:50,866 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-19 07:02:50,866 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-19 07:02:50,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-19 07:02:50,866 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-03-19 07:02:50,867 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-03-19 07:02:50,867 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-19 07:02:50,867 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-03-19 07:02:50,867 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2022-03-19 07:02:50,867 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2022-03-19 07:02:50,867 INFO L130 BoogieDeclarations]: Found specification of procedure SSLv3_client_method [2022-03-19 07:02:50,867 INFO L130 BoogieDeclarations]: Found specification of procedure sslv3_base_method [2022-03-19 07:02:50,867 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_connect [2022-03-19 07:02:50,867 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_get_client_method [2022-03-19 07:02:50,867 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-03-19 07:02:50,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-03-19 07:02:50,867 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-19 07:02:50,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-03-19 07:02:50,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-19 07:02:50,868 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-03-19 07:02:50,868 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-19 07:02:50,868 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2022-03-19 07:02:50,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-03-19 07:02:50,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-19 07:02:50,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-19 07:02:50,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-19 07:02:50,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-03-19 07:02:50,868 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-03-19 07:02:50,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-03-19 07:02:50,868 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-03-19 07:02:50,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-19 07:02:50,995 INFO L234 CfgBuilder]: Building ICFG [2022-03-19 07:02:50,996 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-19 07:02:52,191 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 07:02:52,539 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2022-03-19 07:02:52,539 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2022-03-19 07:02:52,559 INFO L275 CfgBuilder]: Performing block encoding [2022-03-19 07:02:52,564 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-19 07:02:52,564 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-19 07:02:52,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 07:02:52 BoogieIcfgContainer [2022-03-19 07:02:52,566 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-19 07:02:52,568 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-19 07:02:52,569 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-19 07:02:52,571 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-19 07:02:52,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.03 07:02:50" (1/3) ... [2022-03-19 07:02:52,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35717b95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 07:02:52, skipping insertion in model container [2022-03-19 07:02:52,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 07:02:50" (2/3) ... [2022-03-19 07:02:52,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35717b95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 07:02:52, skipping insertion in model container [2022-03-19 07:02:52,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 07:02:52" (3/3) ... [2022-03-19 07:02:52,573 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt.blast.02.i.cil-2.c [2022-03-19 07:02:52,576 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-19 07:02:52,577 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-19 07:02:52,615 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-19 07:02:52,621 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-19 07:02:52,621 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-19 07:02:52,636 INFO L276 IsEmpty]: Start isEmpty. Operand has 138 states, 130 states have (on average 1.6923076923076923) internal successors, (220), 131 states have internal predecessors, (220), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-19 07:02:52,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-03-19 07:02:52,652 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:02:52,653 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:02:52,653 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:02:52,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:02:52,664 INFO L85 PathProgramCache]: Analyzing trace with hash -22644822, now seen corresponding path program 1 times [2022-03-19 07:02:52,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:02:52,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [198403620] [2022-03-19 07:02:52,678 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 07:02:52,678 INFO L85 PathProgramCache]: Analyzing trace with hash -22644822, now seen corresponding path program 2 times [2022-03-19 07:02:52,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:02:52,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532618366] [2022-03-19 07:02:52,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:02:52,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:02:52,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:53,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:02:53,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:53,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 07:02:53,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:02:53,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532618366] [2022-03-19 07:02:53,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532618366] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:02:53,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:02:53,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 07:02:53,196 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:02:53,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [198403620] [2022-03-19 07:02:53,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [198403620] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:02:53,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:02:53,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 07:02:53,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450154829] [2022-03-19 07:02:53,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:02:53,200 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 07:02:53,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:02:53,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 07:02:53,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 07:02:53,218 INFO L87 Difference]: Start difference. First operand has 138 states, 130 states have (on average 1.6923076923076923) internal successors, (220), 131 states have internal predecessors, (220), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 07:02:55,249 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:02:55,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:02:55,739 INFO L93 Difference]: Finished difference Result 267 states and 442 transitions. [2022-03-19 07:02:55,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 07:02:55,741 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2022-03-19 07:02:55,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:02:55,747 INFO L225 Difference]: With dead ends: 267 [2022-03-19 07:02:55,747 INFO L226 Difference]: Without dead ends: 122 [2022-03-19 07:02:55,749 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-19 07:02:55,751 INFO L912 BasicCegarLoop]: 213 mSDtfsCounter, 7 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-03-19 07:02:55,752 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 555 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 320 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-03-19 07:02:55,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-03-19 07:02:55,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 121. [2022-03-19 07:02:55,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 116 states have (on average 1.5) internal successors, (174), 116 states have internal predecessors, (174), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 07:02:55,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 178 transitions. [2022-03-19 07:02:55,779 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 178 transitions. Word has length 30 [2022-03-19 07:02:55,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:02:55,779 INFO L478 AbstractCegarLoop]: Abstraction has 121 states and 178 transitions. [2022-03-19 07:02:55,780 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 07:02:55,780 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 178 transitions. [2022-03-19 07:02:55,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-03-19 07:02:55,781 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:02:55,781 INFO L500 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:02:55,781 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-19 07:02:55,781 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:02:55,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:02:55,782 INFO L85 PathProgramCache]: Analyzing trace with hash 868047042, now seen corresponding path program 1 times [2022-03-19 07:02:55,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:02:55,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [593764986] [2022-03-19 07:02:55,783 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 07:02:55,783 INFO L85 PathProgramCache]: Analyzing trace with hash 868047042, now seen corresponding path program 2 times [2022-03-19 07:02:55,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:02:55,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830001129] [2022-03-19 07:02:55,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:02:55,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:02:55,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:55,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:02:55,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:55,937 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-19 07:02:55,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:02:55,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830001129] [2022-03-19 07:02:55,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830001129] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:02:55,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:02:55,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-19 07:02:55,938 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:02:55,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [593764986] [2022-03-19 07:02:55,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [593764986] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:02:55,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:02:55,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-19 07:02:55,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001211851] [2022-03-19 07:02:55,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:02:55,939 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-19 07:02:55,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:02:55,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-19 07:02:55,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-19 07:02:55,940 INFO L87 Difference]: Start difference. First operand 121 states and 178 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 07:02:57,960 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:02:58,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:02:58,199 INFO L93 Difference]: Finished difference Result 326 states and 488 transitions. [2022-03-19 07:02:58,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-19 07:02:58,199 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2022-03-19 07:02:58,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:02:58,201 INFO L225 Difference]: With dead ends: 326 [2022-03-19 07:02:58,201 INFO L226 Difference]: Without dead ends: 221 [2022-03-19 07:02:58,202 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-19 07:02:58,203 INFO L912 BasicCegarLoop]: 167 mSDtfsCounter, 123 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-03-19 07:02:58,203 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 320 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 189 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-03-19 07:02:58,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-03-19 07:02:58,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2022-03-19 07:02:58,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 216 states have (on average 1.4861111111111112) internal successors, (321), 216 states have internal predecessors, (321), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 07:02:58,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 325 transitions. [2022-03-19 07:02:58,216 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 325 transitions. Word has length 44 [2022-03-19 07:02:58,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:02:58,216 INFO L478 AbstractCegarLoop]: Abstraction has 221 states and 325 transitions. [2022-03-19 07:02:58,216 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 07:02:58,216 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 325 transitions. [2022-03-19 07:02:58,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-03-19 07:02:58,218 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:02:58,218 INFO L500 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:02:58,218 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-19 07:02:58,218 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:02:58,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:02:58,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1147706284, now seen corresponding path program 1 times [2022-03-19 07:02:58,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:02:58,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2098525096] [2022-03-19 07:02:58,219 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 07:02:58,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1147706284, now seen corresponding path program 2 times [2022-03-19 07:02:58,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:02:58,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644610225] [2022-03-19 07:02:58,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:02:58,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:02:58,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:58,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:02:58,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:58,444 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-19 07:02:58,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:02:58,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644610225] [2022-03-19 07:02:58,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644610225] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:02:58,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:02:58,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 07:02:58,445 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:02:58,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2098525096] [2022-03-19 07:02:58,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2098525096] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:02:58,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:02:58,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 07:02:58,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563595951] [2022-03-19 07:02:58,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:02:58,446 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 07:02:58,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:02:58,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 07:02:58,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 07:02:58,446 INFO L87 Difference]: Start difference. First operand 221 states and 325 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 07:03:00,459 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:03:00,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:03:00,831 INFO L93 Difference]: Finished difference Result 362 states and 538 transitions. [2022-03-19 07:03:00,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 07:03:00,832 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2022-03-19 07:03:00,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:03:00,833 INFO L225 Difference]: With dead ends: 362 [2022-03-19 07:03:00,834 INFO L226 Difference]: Without dead ends: 257 [2022-03-19 07:03:00,834 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-19 07:03:00,835 INFO L912 BasicCegarLoop]: 198 mSDtfsCounter, 33 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-19 07:03:00,835 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 484 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 359 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-03-19 07:03:00,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2022-03-19 07:03:00,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 239. [2022-03-19 07:03:00,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 234 states have (on average 1.5) internal successors, (351), 234 states have internal predecessors, (351), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 07:03:00,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 355 transitions. [2022-03-19 07:03:00,847 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 355 transitions. Word has length 59 [2022-03-19 07:03:00,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:03:00,847 INFO L478 AbstractCegarLoop]: Abstraction has 239 states and 355 transitions. [2022-03-19 07:03:00,847 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 07:03:00,847 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 355 transitions. [2022-03-19 07:03:00,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-03-19 07:03:00,849 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:03:00,849 INFO L500 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:03:00,849 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-19 07:03:00,849 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:03:00,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:03:00,850 INFO L85 PathProgramCache]: Analyzing trace with hash -861449916, now seen corresponding path program 3 times [2022-03-19 07:03:00,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:03:00,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [486531907] [2022-03-19 07:03:09,692 WARN L232 SmtUtils]: Spent 8.05s on a formula simplification that was a NOOP. DAG size: 228 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-19 07:03:15,330 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 07:03:15,330 INFO L85 PathProgramCache]: Analyzing trace with hash -861449916, now seen corresponding path program 4 times [2022-03-19 07:03:15,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:03:15,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190298113] [2022-03-19 07:03:15,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:03:15,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:03:15,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:15,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:03:15,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:15,489 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-19 07:03:15,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:03:15,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190298113] [2022-03-19 07:03:15,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190298113] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:03:15,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:03:15,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 07:03:15,490 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:03:15,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [486531907] [2022-03-19 07:03:15,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [486531907] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:03:15,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:03:15,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 07:03:15,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991417965] [2022-03-19 07:03:15,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:03:15,491 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 07:03:15,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:03:15,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 07:03:15,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 07:03:15,494 INFO L87 Difference]: Start difference. First operand 239 states and 355 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 07:03:17,511 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:03:17,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:03:17,891 INFO L93 Difference]: Finished difference Result 642 states and 963 transitions. [2022-03-19 07:03:17,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 07:03:17,892 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 73 [2022-03-19 07:03:17,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:03:17,893 INFO L225 Difference]: With dead ends: 642 [2022-03-19 07:03:17,894 INFO L226 Difference]: Without dead ends: 419 [2022-03-19 07:03:17,894 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-19 07:03:17,895 INFO L912 BasicCegarLoop]: 104 mSDtfsCounter, 112 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 43 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-19 07:03:17,895 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 296 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 379 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-03-19 07:03:17,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2022-03-19 07:03:17,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 261. [2022-03-19 07:03:17,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 256 states have (on average 1.4921875) internal successors, (382), 256 states have internal predecessors, (382), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 07:03:17,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 386 transitions. [2022-03-19 07:03:17,909 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 386 transitions. Word has length 73 [2022-03-19 07:03:17,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:03:17,909 INFO L478 AbstractCegarLoop]: Abstraction has 261 states and 386 transitions. [2022-03-19 07:03:17,909 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 07:03:17,910 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 386 transitions. [2022-03-19 07:03:17,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-03-19 07:03:17,911 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:03:17,911 INFO L500 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:03:17,911 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-19 07:03:17,912 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:03:17,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:03:17,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1970430362, now seen corresponding path program 1 times [2022-03-19 07:03:17,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:03:17,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [259966119] [2022-03-19 07:03:33,783 WARN L232 SmtUtils]: Spent 11.11s on a formula simplification that was a NOOP. DAG size: 228 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-19 07:03:38,450 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 07:03:38,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1970430362, now seen corresponding path program 2 times [2022-03-19 07:03:38,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:03:38,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259807316] [2022-03-19 07:03:38,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:03:38,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:03:38,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:38,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:03:38,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:38,646 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-19 07:03:38,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:03:38,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259807316] [2022-03-19 07:03:38,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259807316] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:03:38,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:03:38,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 07:03:38,648 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:03:38,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [259966119] [2022-03-19 07:03:38,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [259966119] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:03:38,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:03:38,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 07:03:38,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072300634] [2022-03-19 07:03:38,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:03:38,649 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 07:03:38,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:03:38,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 07:03:38,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 07:03:38,649 INFO L87 Difference]: Start difference. First operand 261 states and 386 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 07:03:40,659 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:03:41,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:03:41,089 INFO L93 Difference]: Finished difference Result 665 states and 992 transitions. [2022-03-19 07:03:41,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 07:03:41,089 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 73 [2022-03-19 07:03:41,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:03:41,091 INFO L225 Difference]: With dead ends: 665 [2022-03-19 07:03:41,091 INFO L226 Difference]: Without dead ends: 420 [2022-03-19 07:03:41,092 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-19 07:03:41,092 INFO L912 BasicCegarLoop]: 97 mSDtfsCounter, 119 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 46 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-19 07:03:41,092 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 278 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 382 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-03-19 07:03:41,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2022-03-19 07:03:41,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 263. [2022-03-19 07:03:41,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 258 states have (on average 1.4844961240310077) internal successors, (383), 258 states have internal predecessors, (383), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 07:03:41,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 387 transitions. [2022-03-19 07:03:41,105 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 387 transitions. Word has length 73 [2022-03-19 07:03:41,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:03:41,105 INFO L478 AbstractCegarLoop]: Abstraction has 263 states and 387 transitions. [2022-03-19 07:03:41,106 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 07:03:41,106 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 387 transitions. [2022-03-19 07:03:41,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-19 07:03:41,109 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:03:41,109 INFO L500 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:03:41,110 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-19 07:03:41,110 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:03:41,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:03:41,110 INFO L85 PathProgramCache]: Analyzing trace with hash -899406007, now seen corresponding path program 1 times [2022-03-19 07:03:41,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:03:41,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1308542592] [2022-03-19 07:03:54,246 WARN L232 SmtUtils]: Spent 12.40s on a formula simplification that was a NOOP. DAG size: 228 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-19 07:04:05,491 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 07:04:05,491 INFO L85 PathProgramCache]: Analyzing trace with hash -899406007, now seen corresponding path program 2 times [2022-03-19 07:04:05,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:04:05,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23981497] [2022-03-19 07:04:05,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:04:05,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:04:05,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:04:05,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:04:05,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:04:05,654 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-19 07:04:05,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:04:05,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23981497] [2022-03-19 07:04:05,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23981497] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:04:05,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:04:05,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 07:04:05,655 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:04:05,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1308542592] [2022-03-19 07:04:05,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1308542592] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:04:05,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:04:05,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 07:04:05,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532334373] [2022-03-19 07:04:05,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:04:05,656 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 07:04:05,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:04:05,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 07:04:05,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 07:04:05,657 INFO L87 Difference]: Start difference. First operand 263 states and 387 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 07:04:07,666 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:04:08,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:04:08,049 INFO L93 Difference]: Finished difference Result 415 states and 613 transitions. [2022-03-19 07:04:08,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 07:04:08,049 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 74 [2022-03-19 07:04:08,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:04:08,050 INFO L225 Difference]: With dead ends: 415 [2022-03-19 07:04:08,050 INFO L226 Difference]: Without dead ends: 280 [2022-03-19 07:04:08,051 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-19 07:04:08,051 INFO L912 BasicCegarLoop]: 196 mSDtfsCounter, 35 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-19 07:04:08,052 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 480 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 350 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-03-19 07:04:08,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2022-03-19 07:04:08,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 263. [2022-03-19 07:04:08,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 258 states have (on average 1.4806201550387597) internal successors, (382), 258 states have internal predecessors, (382), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 07:04:08,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 386 transitions. [2022-03-19 07:04:08,070 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 386 transitions. Word has length 74 [2022-03-19 07:04:08,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:04:08,071 INFO L478 AbstractCegarLoop]: Abstraction has 263 states and 386 transitions. [2022-03-19 07:04:08,071 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) [2022-03-19 07:04:08,071 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 386 transitions. [2022-03-19 07:04:08,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-19 07:04:08,073 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:04:08,073 INFO L500 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:04:08,073 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-19 07:04:08,073 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:04:08,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:04:08,073 INFO L85 PathProgramCache]: Analyzing trace with hash -2000808735, now seen corresponding path program 1 times [2022-03-19 07:04:08,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:04:08,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1166276655] [2022-03-19 07:04:21,233 WARN L232 SmtUtils]: Spent 8.06s on a formula simplification that was a NOOP. DAG size: 228 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-19 07:04:25,634 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 07:04:25,634 INFO L85 PathProgramCache]: Analyzing trace with hash -2000808735, now seen corresponding path program 2 times [2022-03-19 07:04:25,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:04:25,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789396323] [2022-03-19 07:04:25,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:04:25,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:04:25,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:04:25,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:04:25,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:04:25,769 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-19 07:04:25,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:04:25,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789396323] [2022-03-19 07:04:25,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789396323] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:04:25,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:04:25,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 07:04:25,769 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:04:25,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1166276655] [2022-03-19 07:04:25,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1166276655] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:04:25,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:04:25,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 07:04:25,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122135014] [2022-03-19 07:04:25,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:04:25,770 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 07:04:25,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:04:25,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 07:04:25,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 07:04:25,771 INFO L87 Difference]: Start difference. First operand 263 states and 386 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 07:04:27,783 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:04:28,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:04:28,102 INFO L93 Difference]: Finished difference Result 415 states and 611 transitions. [2022-03-19 07:04:28,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 07:04:28,102 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 75 [2022-03-19 07:04:28,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:04:28,104 INFO L225 Difference]: With dead ends: 415 [2022-03-19 07:04:28,104 INFO L226 Difference]: Without dead ends: 280 [2022-03-19 07:04:28,104 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-19 07:04:28,104 INFO L912 BasicCegarLoop]: 195 mSDtfsCounter, 33 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-03-19 07:04:28,105 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 478 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 349 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-03-19 07:04:28,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2022-03-19 07:04:28,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 263. [2022-03-19 07:04:28,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 258 states have (on average 1.4767441860465116) internal successors, (381), 258 states have internal predecessors, (381), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 07:04:28,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 385 transitions. [2022-03-19 07:04:28,113 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 385 transitions. Word has length 75 [2022-03-19 07:04:28,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:04:28,113 INFO L478 AbstractCegarLoop]: Abstraction has 263 states and 385 transitions. [2022-03-19 07:04:28,113 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 07:04:28,113 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 385 transitions. [2022-03-19 07:04:28,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-03-19 07:04:28,114 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:04:28,114 INFO L500 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:04:28,114 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-19 07:04:28,114 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:04:28,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:04:28,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1727974300, now seen corresponding path program 1 times [2022-03-19 07:04:28,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:04:28,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [306397416] [2022-03-19 07:04:44,539 WARN L232 SmtUtils]: Spent 10.59s on a formula simplification that was a NOOP. DAG size: 228 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-19 07:04:50,478 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 07:04:50,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1727974300, now seen corresponding path program 2 times [2022-03-19 07:04:50,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:04:50,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713732489] [2022-03-19 07:04:50,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:04:50,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:04:50,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:04:50,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:04:50,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:04:50,615 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-19 07:04:50,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:04:50,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713732489] [2022-03-19 07:04:50,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713732489] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:04:50,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:04:50,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 07:04:50,616 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:04:50,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [306397416] [2022-03-19 07:04:50,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [306397416] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:04:50,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:04:50,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 07:04:50,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360869822] [2022-03-19 07:04:50,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:04:50,617 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 07:04:50,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:04:50,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 07:04:50,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 07:04:50,617 INFO L87 Difference]: Start difference. First operand 263 states and 385 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 07:04:52,625 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:04:52,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:04:52,911 INFO L93 Difference]: Finished difference Result 406 states and 598 transitions. [2022-03-19 07:04:52,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 07:04:52,912 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 76 [2022-03-19 07:04:52,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:04:52,913 INFO L225 Difference]: With dead ends: 406 [2022-03-19 07:04:52,913 INFO L226 Difference]: Without dead ends: 271 [2022-03-19 07:04:52,913 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-19 07:04:52,914 INFO L912 BasicCegarLoop]: 188 mSDtfsCounter, 24 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-03-19 07:04:52,914 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 464 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 326 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-03-19 07:04:52,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2022-03-19 07:04:52,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 263. [2022-03-19 07:04:52,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 258 states have (on average 1.4728682170542635) internal successors, (380), 258 states have internal predecessors, (380), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 07:04:52,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 384 transitions. [2022-03-19 07:04:52,927 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 384 transitions. Word has length 76 [2022-03-19 07:04:52,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:04:52,927 INFO L478 AbstractCegarLoop]: Abstraction has 263 states and 384 transitions. [2022-03-19 07:04:52,927 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 07:04:52,927 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 384 transitions. [2022-03-19 07:04:52,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-19 07:04:52,927 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:04:52,928 INFO L500 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:04:52,928 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-19 07:04:52,928 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:04:52,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:04:52,929 INFO L85 PathProgramCache]: Analyzing trace with hash -988156823, now seen corresponding path program 1 times [2022-03-19 07:04:52,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:04:52,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [704768363] [2022-03-19 07:04:52,931 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 07:04:52,931 INFO L85 PathProgramCache]: Analyzing trace with hash -988156823, now seen corresponding path program 2 times [2022-03-19 07:04:52,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:04:52,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300945411] [2022-03-19 07:04:52,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:04:52,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:04:52,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:04:53,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:04:53,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:04:53,046 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-03-19 07:04:53,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:04:53,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300945411] [2022-03-19 07:04:53,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300945411] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:04:53,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:04:53,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-19 07:04:53,046 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:04:53,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [704768363] [2022-03-19 07:04:53,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [704768363] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:04:53,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:04:53,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-19 07:04:53,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909522864] [2022-03-19 07:04:53,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:04:53,047 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-19 07:04:53,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:04:53,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-19 07:04:53,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-19 07:04:53,048 INFO L87 Difference]: Start difference. First operand 263 states and 384 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 07:04:55,066 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:04:55,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:04:55,518 INFO L93 Difference]: Finished difference Result 530 states and 782 transitions. [2022-03-19 07:04:55,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-19 07:04:55,518 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 77 [2022-03-19 07:04:55,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:04:55,520 INFO L225 Difference]: With dead ends: 530 [2022-03-19 07:04:55,520 INFO L226 Difference]: Without dead ends: 395 [2022-03-19 07:04:55,520 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-19 07:04:55,521 INFO L912 BasicCegarLoop]: 315 mSDtfsCounter, 126 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-19 07:04:55,521 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 477 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 339 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-03-19 07:04:55,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2022-03-19 07:04:55,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 395. [2022-03-19 07:04:55,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 390 states have (on average 1.4666666666666666) internal successors, (572), 390 states have internal predecessors, (572), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 07:04:55,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 576 transitions. [2022-03-19 07:04:55,533 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 576 transitions. Word has length 77 [2022-03-19 07:04:55,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:04:55,533 INFO L478 AbstractCegarLoop]: Abstraction has 395 states and 576 transitions. [2022-03-19 07:04:55,533 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 07:04:55,533 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 576 transitions. [2022-03-19 07:04:55,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-19 07:04:55,534 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:04:55,534 INFO L500 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:04:55,534 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-19 07:04:55,534 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:04:55,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:04:55,535 INFO L85 PathProgramCache]: Analyzing trace with hash -926117209, now seen corresponding path program 1 times [2022-03-19 07:04:55,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:04:55,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2015069205] [2022-03-19 07:04:55,535 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 07:04:55,535 INFO L85 PathProgramCache]: Analyzing trace with hash -926117209, now seen corresponding path program 2 times [2022-03-19 07:04:55,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:04:55,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306692108] [2022-03-19 07:04:55,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:04:55,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:04:55,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:04:55,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:04:55,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:04:55,639 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-19 07:04:55,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:04:55,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306692108] [2022-03-19 07:04:55,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306692108] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:04:55,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:04:55,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-19 07:04:55,640 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:04:55,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2015069205] [2022-03-19 07:04:55,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2015069205] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:04:55,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:04:55,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-19 07:04:55,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742893129] [2022-03-19 07:04:55,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:04:55,640 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-19 07:04:55,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:04:55,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-19 07:04:55,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-19 07:04:55,641 INFO L87 Difference]: Start difference. First operand 395 states and 576 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 07:04:57,650 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:04:57,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:04:57,891 INFO L93 Difference]: Finished difference Result 687 states and 1004 transitions. [2022-03-19 07:04:57,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-19 07:04:57,891 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 77 [2022-03-19 07:04:57,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:04:57,893 INFO L225 Difference]: With dead ends: 687 [2022-03-19 07:04:57,893 INFO L226 Difference]: Without dead ends: 420 [2022-03-19 07:04:57,893 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-19 07:04:57,894 INFO L912 BasicCegarLoop]: 196 mSDtfsCounter, 16 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-03-19 07:04:57,894 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 358 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 214 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-03-19 07:04:57,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2022-03-19 07:04:57,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 420. [2022-03-19 07:04:57,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 415 states have (on average 1.4578313253012047) internal successors, (605), 415 states have internal predecessors, (605), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 07:04:57,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 609 transitions. [2022-03-19 07:04:57,906 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 609 transitions. Word has length 77 [2022-03-19 07:04:57,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:04:57,906 INFO L478 AbstractCegarLoop]: Abstraction has 420 states and 609 transitions. [2022-03-19 07:04:57,906 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 07:04:57,906 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 609 transitions. [2022-03-19 07:04:57,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-03-19 07:04:57,907 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:04:57,907 INFO L500 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:04:57,907 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-19 07:04:57,907 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:04:57,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:04:57,908 INFO L85 PathProgramCache]: Analyzing trace with hash 140608816, now seen corresponding path program 1 times [2022-03-19 07:04:57,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:04:57,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [288346073] [2022-03-19 07:04:57,908 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 07:04:57,908 INFO L85 PathProgramCache]: Analyzing trace with hash 140608816, now seen corresponding path program 2 times [2022-03-19 07:04:57,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:04:57,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181482542] [2022-03-19 07:04:57,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:04:57,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:04:57,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:04:58,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:04:58,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:04:58,056 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-03-19 07:04:58,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:04:58,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181482542] [2022-03-19 07:04:58,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181482542] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:04:58,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:04:58,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-19 07:04:58,058 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:04:58,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [288346073] [2022-03-19 07:04:58,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [288346073] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:04:58,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:04:58,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-19 07:04:58,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118327865] [2022-03-19 07:04:58,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:04:58,059 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-19 07:04:58,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:04:58,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-19 07:04:58,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-19 07:04:58,060 INFO L87 Difference]: Start difference. First operand 420 states and 609 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 07:05:00,075 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:05:00,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:05:00,452 INFO L93 Difference]: Finished difference Result 843 states and 1231 transitions. [2022-03-19 07:05:00,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-19 07:05:00,463 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 97 [2022-03-19 07:05:00,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:05:00,465 INFO L225 Difference]: With dead ends: 843 [2022-03-19 07:05:00,465 INFO L226 Difference]: Without dead ends: 551 [2022-03-19 07:05:00,466 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-19 07:05:00,466 INFO L912 BasicCegarLoop]: 314 mSDtfsCounter, 126 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-19 07:05:00,467 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 476 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 338 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-03-19 07:05:00,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2022-03-19 07:05:00,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 551. [2022-03-19 07:05:00,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 546 states have (on average 1.4578754578754578) internal successors, (796), 546 states have internal predecessors, (796), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 07:05:00,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 800 transitions. [2022-03-19 07:05:00,481 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 800 transitions. Word has length 97 [2022-03-19 07:05:00,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:05:00,481 INFO L478 AbstractCegarLoop]: Abstraction has 551 states and 800 transitions. [2022-03-19 07:05:00,481 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 07:05:00,481 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 800 transitions. [2022-03-19 07:05:00,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-03-19 07:05:00,483 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:05:00,484 INFO L500 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:05:00,484 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-19 07:05:00,484 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:05:00,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:05:00,484 INFO L85 PathProgramCache]: Analyzing trace with hash -2136926065, now seen corresponding path program 1 times [2022-03-19 07:05:00,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:05:00,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1608707380] [2022-03-19 07:05:00,485 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 07:05:00,485 INFO L85 PathProgramCache]: Analyzing trace with hash -2136926065, now seen corresponding path program 2 times [2022-03-19 07:05:00,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:05:00,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080737438] [2022-03-19 07:05:00,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:05:00,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:05:00,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:05:00,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:05:00,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:05:00,634 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-03-19 07:05:00,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:05:00,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080737438] [2022-03-19 07:05:00,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080737438] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:05:00,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:05:00,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-19 07:05:00,635 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:05:00,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1608707380] [2022-03-19 07:05:00,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1608707380] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:05:00,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:05:00,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-19 07:05:00,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045112501] [2022-03-19 07:05:00,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:05:00,636 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-19 07:05:00,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:05:00,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-19 07:05:00,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-19 07:05:00,636 INFO L87 Difference]: Start difference. First operand 551 states and 800 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 07:05:02,644 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:05:03,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:05:03,016 INFO L93 Difference]: Finished difference Result 1087 states and 1587 transitions. [2022-03-19 07:05:03,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-19 07:05:03,017 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 118 [2022-03-19 07:05:03,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:05:03,019 INFO L225 Difference]: With dead ends: 1087 [2022-03-19 07:05:03,019 INFO L226 Difference]: Without dead ends: 664 [2022-03-19 07:05:03,020 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-19 07:05:03,020 INFO L912 BasicCegarLoop]: 313 mSDtfsCounter, 125 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-19 07:05:03,020 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 475 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 337 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-03-19 07:05:03,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2022-03-19 07:05:03,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 664. [2022-03-19 07:05:03,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 659 states have (on average 1.4582701062215477) internal successors, (961), 659 states have internal predecessors, (961), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 07:05:03,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 965 transitions. [2022-03-19 07:05:03,036 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 965 transitions. Word has length 118 [2022-03-19 07:05:03,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:05:03,036 INFO L478 AbstractCegarLoop]: Abstraction has 664 states and 965 transitions. [2022-03-19 07:05:03,037 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 07:05:03,037 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 965 transitions. [2022-03-19 07:05:03,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-03-19 07:05:03,038 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:05:03,038 INFO L500 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:05:03,038 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-03-19 07:05:03,038 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:05:03,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:05:03,040 INFO L85 PathProgramCache]: Analyzing trace with hash -383649488, now seen corresponding path program 1 times [2022-03-19 07:05:03,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:05:03,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [846299930] [2022-03-19 07:05:15,050 WARN L232 SmtUtils]: Spent 7.12s on a formula simplification that was a NOOP. DAG size: 228 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-19 07:05:20,945 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 07:05:20,946 INFO L85 PathProgramCache]: Analyzing trace with hash -383649488, now seen corresponding path program 2 times [2022-03-19 07:05:20,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:05:20,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794736553] [2022-03-19 07:05:20,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:05:20,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:05:21,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:05:21,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:05:21,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:05:21,103 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 190 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-03-19 07:05:21,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:05:21,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794736553] [2022-03-19 07:05:21,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794736553] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:05:21,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:05:21,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 07:05:21,104 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:05:21,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [846299930] [2022-03-19 07:05:21,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [846299930] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:05:21,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:05:21,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 07:05:21,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010190672] [2022-03-19 07:05:21,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:05:21,104 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 07:05:21,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:05:21,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 07:05:21,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 07:05:21,105 INFO L87 Difference]: Start difference. First operand 664 states and 965 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 07:05:23,113 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:05:23,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:05:23,645 INFO L93 Difference]: Finished difference Result 1651 states and 2412 transitions. [2022-03-19 07:05:23,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 07:05:23,645 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 152 [2022-03-19 07:05:23,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:05:23,649 INFO L225 Difference]: With dead ends: 1651 [2022-03-19 07:05:23,649 INFO L226 Difference]: Without dead ends: 1113 [2022-03-19 07:05:23,650 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-19 07:05:23,651 INFO L912 BasicCegarLoop]: 214 mSDtfsCounter, 114 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 31 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-03-19 07:05:23,651 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 510 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 504 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-03-19 07:05:23,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2022-03-19 07:05:23,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 744. [2022-03-19 07:05:23,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 744 states, 739 states have (on average 1.4573748308525034) internal successors, (1077), 739 states have internal predecessors, (1077), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 07:05:23,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1081 transitions. [2022-03-19 07:05:23,679 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1081 transitions. Word has length 152 [2022-03-19 07:05:23,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:05:23,679 INFO L478 AbstractCegarLoop]: Abstraction has 744 states and 1081 transitions. [2022-03-19 07:05:23,679 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 07:05:23,679 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1081 transitions. [2022-03-19 07:05:23,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-03-19 07:05:23,680 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:05:23,681 INFO L500 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:05:23,681 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-03-19 07:05:23,681 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:05:23,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:05:23,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1211981165, now seen corresponding path program 1 times [2022-03-19 07:05:23,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:05:23,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [88721285] [2022-03-19 07:05:36,089 WARN L232 SmtUtils]: Spent 7.33s on a formula simplification that was a NOOP. DAG size: 228 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-19 07:05:41,662 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 07:05:41,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1211981165, now seen corresponding path program 2 times [2022-03-19 07:05:41,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:05:41,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784298994] [2022-03-19 07:05:41,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:05:41,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:05:41,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:05:41,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:05:41,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:05:41,838 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-03-19 07:05:41,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:05:41,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784298994] [2022-03-19 07:05:41,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784298994] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:05:41,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:05:41,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 07:05:41,838 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:05:41,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [88721285] [2022-03-19 07:05:41,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [88721285] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:05:41,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:05:41,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 07:05:41,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987923302] [2022-03-19 07:05:41,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:05:41,839 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 07:05:41,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:05:41,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 07:05:41,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 07:05:41,840 INFO L87 Difference]: Start difference. First operand 744 states and 1081 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 07:05:43,848 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:05:44,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:05:44,329 INFO L93 Difference]: Finished difference Result 1693 states and 2470 transitions. [2022-03-19 07:05:44,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 07:05:44,330 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 153 [2022-03-19 07:05:44,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:05:44,333 INFO L225 Difference]: With dead ends: 1693 [2022-03-19 07:05:44,333 INFO L226 Difference]: Without dead ends: 1091 [2022-03-19 07:05:44,335 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-19 07:05:44,335 INFO L912 BasicCegarLoop]: 239 mSDtfsCounter, 97 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-19 07:05:44,335 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 567 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 532 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-03-19 07:05:44,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1091 states. [2022-03-19 07:05:44,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1091 to 812. [2022-03-19 07:05:44,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 807 states have (on average 1.4584882280049567) internal successors, (1177), 807 states have internal predecessors, (1177), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 07:05:44,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1181 transitions. [2022-03-19 07:05:44,364 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1181 transitions. Word has length 153 [2022-03-19 07:05:44,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:05:44,364 INFO L478 AbstractCegarLoop]: Abstraction has 812 states and 1181 transitions. [2022-03-19 07:05:44,365 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 07:05:44,365 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1181 transitions. [2022-03-19 07:05:44,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-03-19 07:05:44,366 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:05:44,366 INFO L500 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:05:44,366 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-03-19 07:05:44,367 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:05:44,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:05:44,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1496700185, now seen corresponding path program 1 times [2022-03-19 07:05:44,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:05:44,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1368768289] [2022-03-19 07:05:53,862 WARN L232 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 228 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-19 07:06:00,979 WARN L232 SmtUtils]: Spent 5.25s on a formula simplification that was a NOOP. DAG size: 153 (called from [L 269] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-19 07:06:07,298 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 07:06:07,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1496700185, now seen corresponding path program 2 times [2022-03-19 07:06:07,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:06:07,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791258965] [2022-03-19 07:06:07,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:06:07,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:06:07,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:06:07,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:06:07,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:06:07,462 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 234 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-03-19 07:06:07,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:06:07,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791258965] [2022-03-19 07:06:07,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791258965] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:06:07,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:06:07,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 07:06:07,462 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:06:07,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1368768289] [2022-03-19 07:06:07,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1368768289] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:06:07,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:06:07,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 07:06:07,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537245390] [2022-03-19 07:06:07,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:06:07,463 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 07:06:07,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:06:07,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 07:06:07,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 07:06:07,464 INFO L87 Difference]: Start difference. First operand 812 states and 1181 transitions. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 07:06:09,471 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:06:09,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:06:09,844 INFO L93 Difference]: Finished difference Result 1997 states and 2921 transitions. [2022-03-19 07:06:09,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 07:06:09,844 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 167 [2022-03-19 07:06:09,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:06:09,848 INFO L225 Difference]: With dead ends: 1997 [2022-03-19 07:06:09,848 INFO L226 Difference]: Without dead ends: 1201 [2022-03-19 07:06:09,849 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-19 07:06:09,849 INFO L912 BasicCegarLoop]: 108 mSDtfsCounter, 117 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 43 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-03-19 07:06:09,850 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 300 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 394 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-03-19 07:06:09,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1201 states. [2022-03-19 07:06:09,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1201 to 817. [2022-03-19 07:06:09,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 812 states have (on average 1.4445812807881773) internal successors, (1173), 812 states have internal predecessors, (1173), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 07:06:09,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1177 transitions. [2022-03-19 07:06:09,894 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1177 transitions. Word has length 167 [2022-03-19 07:06:09,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:06:09,894 INFO L478 AbstractCegarLoop]: Abstraction has 817 states and 1177 transitions. [2022-03-19 07:06:09,894 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 07:06:09,894 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1177 transitions. [2022-03-19 07:06:09,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-03-19 07:06:09,896 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:06:09,896 INFO L500 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:06:09,896 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-03-19 07:06:09,896 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:06:09,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:06:09,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1030373157, now seen corresponding path program 1 times [2022-03-19 07:06:09,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:06:09,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1764376359] [2022-03-19 07:06:29,958 WARN L232 SmtUtils]: Spent 13.08s on a formula simplification that was a NOOP. DAG size: 228 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-19 07:06:37,569 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 07:06:37,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1030373157, now seen corresponding path program 2 times [2022-03-19 07:06:37,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:06:37,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333008865] [2022-03-19 07:06:37,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:06:37,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:06:37,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:06:37,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:06:37,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:06:37,736 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 241 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-03-19 07:06:37,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:06:37,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333008865] [2022-03-19 07:06:37,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333008865] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:06:37,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:06:37,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 07:06:37,737 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:06:37,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1764376359] [2022-03-19 07:06:37,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1764376359] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:06:37,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:06:37,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 07:06:37,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817321017] [2022-03-19 07:06:37,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:06:37,738 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 07:06:37,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:06:37,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 07:06:37,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 07:06:37,738 INFO L87 Difference]: Start difference. First operand 817 states and 1177 transitions. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 4 states have internal predecessors, (104), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 07:06:39,746 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:06:40,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:06:40,185 INFO L93 Difference]: Finished difference Result 1897 states and 2744 transitions. [2022-03-19 07:06:40,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 07:06:40,185 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 4 states have internal predecessors, (104), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 168 [2022-03-19 07:06:40,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:06:40,196 INFO L225 Difference]: With dead ends: 1897 [2022-03-19 07:06:40,196 INFO L226 Difference]: Without dead ends: 1096 [2022-03-19 07:06:40,197 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-19 07:06:40,198 INFO L912 BasicCegarLoop]: 237 mSDtfsCounter, 98 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-19 07:06:40,198 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 563 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 530 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-03-19 07:06:40,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1096 states. [2022-03-19 07:06:40,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1096 to 817. [2022-03-19 07:06:40,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 812 states have (on average 1.4396551724137931) internal successors, (1169), 812 states have internal predecessors, (1169), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 07:06:40,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1173 transitions. [2022-03-19 07:06:40,255 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1173 transitions. Word has length 168 [2022-03-19 07:06:40,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:06:40,255 INFO L478 AbstractCegarLoop]: Abstraction has 817 states and 1173 transitions. [2022-03-19 07:06:40,255 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 4 states have internal predecessors, (104), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 07:06:40,255 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1173 transitions. [2022-03-19 07:06:40,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-03-19 07:06:40,257 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:06:40,257 INFO L500 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:06:40,257 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-03-19 07:06:40,257 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:06:40,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:06:40,257 INFO L85 PathProgramCache]: Analyzing trace with hash -223230462, now seen corresponding path program 1 times [2022-03-19 07:06:40,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:06:40,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [640847787] [2022-03-19 07:06:57,231 WARN L232 SmtUtils]: Spent 10.13s on a formula simplification that was a NOOP. DAG size: 228 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-19 07:07:03,028 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 07:07:03,028 INFO L85 PathProgramCache]: Analyzing trace with hash -223230462, now seen corresponding path program 2 times [2022-03-19 07:07:03,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:07:03,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062339688] [2022-03-19 07:07:03,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:07:03,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:07:03,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:07:03,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:07:03,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:07:03,175 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 248 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-03-19 07:07:03,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:07:03,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062339688] [2022-03-19 07:07:03,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062339688] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:07:03,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:07:03,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 07:07:03,176 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:07:03,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [640847787] [2022-03-19 07:07:03,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [640847787] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:07:03,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:07:03,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 07:07:03,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310923402] [2022-03-19 07:07:03,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:07:03,176 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 07:07:03,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:07:03,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 07:07:03,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 07:07:03,177 INFO L87 Difference]: Start difference. First operand 817 states and 1173 transitions. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 07:07:05,188 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:07:05,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:07:05,594 INFO L93 Difference]: Finished difference Result 2002 states and 2895 transitions. [2022-03-19 07:07:05,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 07:07:05,594 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 169 [2022-03-19 07:07:05,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:07:05,597 INFO L225 Difference]: With dead ends: 2002 [2022-03-19 07:07:05,597 INFO L226 Difference]: Without dead ends: 1201 [2022-03-19 07:07:05,599 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-19 07:07:05,599 INFO L912 BasicCegarLoop]: 97 mSDtfsCounter, 114 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 46 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-03-19 07:07:05,599 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 278 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 382 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-03-19 07:07:05,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1201 states. [2022-03-19 07:07:05,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1201 to 827. [2022-03-19 07:07:05,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 827 states, 822 states have (on average 1.4294403892944039) internal successors, (1175), 822 states have internal predecessors, (1175), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 07:07:05,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 1179 transitions. [2022-03-19 07:07:05,641 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 1179 transitions. Word has length 169 [2022-03-19 07:07:05,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:07:05,641 INFO L478 AbstractCegarLoop]: Abstraction has 827 states and 1179 transitions. [2022-03-19 07:07:05,641 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 07:07:05,641 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 1179 transitions. [2022-03-19 07:07:05,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-03-19 07:07:05,643 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:07:05,643 INFO L500 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 7, 6, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:07:05,643 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-03-19 07:07:05,643 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:07:05,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:07:05,643 INFO L85 PathProgramCache]: Analyzing trace with hash -310692014, now seen corresponding path program 3 times [2022-03-19 07:07:05,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:07:05,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1902347886] [2022-03-19 07:07:20,044 WARN L232 SmtUtils]: Spent 9.45s on a formula simplification that was a NOOP. DAG size: 228 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-19 07:07:27,629 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 07:07:27,630 INFO L85 PathProgramCache]: Analyzing trace with hash -310692014, now seen corresponding path program 4 times [2022-03-19 07:07:27,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:07:27,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450739809] [2022-03-19 07:07:27,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:07:27,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:07:27,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:07:27,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:07:27,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:07:27,787 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 267 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2022-03-19 07:07:27,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:07:27,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450739809] [2022-03-19 07:07:27,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450739809] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:07:27,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:07:27,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 07:07:27,787 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:07:27,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1902347886] [2022-03-19 07:07:27,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1902347886] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:07:27,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:07:27,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 07:07:27,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266527147] [2022-03-19 07:07:27,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:07:27,788 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 07:07:27,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:07:27,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 07:07:27,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 07:07:27,789 INFO L87 Difference]: Start difference. First operand 827 states and 1179 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 07:07:29,797 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:07:30,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:07:30,213 INFO L93 Difference]: Finished difference Result 2012 states and 2887 transitions. [2022-03-19 07:07:30,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 07:07:30,213 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 171 [2022-03-19 07:07:30,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:07:30,216 INFO L225 Difference]: With dead ends: 2012 [2022-03-19 07:07:30,216 INFO L226 Difference]: Without dead ends: 1201 [2022-03-19 07:07:30,218 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-19 07:07:30,218 INFO L912 BasicCegarLoop]: 100 mSDtfsCounter, 108 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 44 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-03-19 07:07:30,218 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 286 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 386 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-03-19 07:07:30,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1201 states. [2022-03-19 07:07:30,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1201 to 842. [2022-03-19 07:07:30,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 837 states have (on average 1.4336917562724014) internal successors, (1200), 837 states have internal predecessors, (1200), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 07:07:30,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1204 transitions. [2022-03-19 07:07:30,259 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1204 transitions. Word has length 171 [2022-03-19 07:07:30,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:07:30,259 INFO L478 AbstractCegarLoop]: Abstraction has 842 states and 1204 transitions. [2022-03-19 07:07:30,259 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 07:07:30,259 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1204 transitions. [2022-03-19 07:07:30,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-03-19 07:07:30,261 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:07:30,261 INFO L500 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 7, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:07:30,261 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-03-19 07:07:30,261 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:07:30,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:07:30,261 INFO L85 PathProgramCache]: Analyzing trace with hash -228612804, now seen corresponding path program 1 times [2022-03-19 07:07:30,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:07:30,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1840972606] [2022-03-19 07:07:42,594 WARN L232 SmtUtils]: Spent 6.87s on a formula simplification that was a NOOP. DAG size: 228 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-19 07:07:50,689 WARN L232 SmtUtils]: Spent 5.77s on a formula simplification that was a NOOP. DAG size: 153 (called from [L 269] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-19 07:07:52,064 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 07:07:52,065 INFO L85 PathProgramCache]: Analyzing trace with hash -228612804, now seen corresponding path program 2 times [2022-03-19 07:07:52,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:07:52,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136810435] [2022-03-19 07:07:52,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:07:52,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:07:52,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:07:52,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:07:52,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:07:52,223 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 271 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-03-19 07:07:52,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:07:52,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136810435] [2022-03-19 07:07:52,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136810435] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:07:52,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:07:52,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 07:07:52,224 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:07:52,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1840972606] [2022-03-19 07:07:52,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1840972606] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:07:52,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:07:52,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 07:07:52,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527449517] [2022-03-19 07:07:52,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:07:52,224 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 07:07:52,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:07:52,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 07:07:52,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 07:07:52,225 INFO L87 Difference]: Start difference. First operand 842 states and 1204 transitions. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 4 states have internal predecessors, (106), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 07:07:54,233 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:07:54,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:07:54,615 INFO L93 Difference]: Finished difference Result 2122 states and 3037 transitions. [2022-03-19 07:07:54,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 07:07:54,616 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 4 states have internal predecessors, (106), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 171 [2022-03-19 07:07:54,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:07:54,620 INFO L225 Difference]: With dead ends: 2122 [2022-03-19 07:07:54,620 INFO L226 Difference]: Without dead ends: 1296 [2022-03-19 07:07:54,622 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-19 07:07:54,622 INFO L912 BasicCegarLoop]: 102 mSDtfsCounter, 108 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 44 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-03-19 07:07:54,622 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 288 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 389 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-03-19 07:07:54,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1296 states. [2022-03-19 07:07:54,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1296 to 947. [2022-03-19 07:07:54,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 947 states, 942 states have (on average 1.4278131634819533) internal successors, (1345), 942 states have internal predecessors, (1345), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 07:07:54,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 947 states to 947 states and 1349 transitions. [2022-03-19 07:07:54,699 INFO L78 Accepts]: Start accepts. Automaton has 947 states and 1349 transitions. Word has length 171 [2022-03-19 07:07:54,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:07:54,699 INFO L478 AbstractCegarLoop]: Abstraction has 947 states and 1349 transitions. [2022-03-19 07:07:54,699 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 4 states have internal predecessors, (106), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 07:07:54,699 INFO L276 IsEmpty]: Start isEmpty. Operand 947 states and 1349 transitions. [2022-03-19 07:07:54,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-03-19 07:07:54,701 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:07:54,701 INFO L500 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 7, 6, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:07:54,701 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-03-19 07:07:54,701 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:07:54,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:07:54,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1837109397, now seen corresponding path program 1 times [2022-03-19 07:07:54,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:07:54,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1958771242] [2022-03-19 07:08:09,748 WARN L232 SmtUtils]: Spent 9.80s on a formula simplification that was a NOOP. DAG size: 228 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-19 07:08:16,666 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 07:08:16,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1837109397, now seen corresponding path program 2 times [2022-03-19 07:08:16,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:08:16,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959775565] [2022-03-19 07:08:16,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:08:16,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:08:16,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:08:16,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:08:16,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:08:16,797 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 270 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2022-03-19 07:08:16,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:08:16,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959775565] [2022-03-19 07:08:16,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959775565] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:08:16,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:08:16,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 07:08:16,797 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:08:16,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1958771242] [2022-03-19 07:08:16,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1958771242] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:08:16,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:08:16,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 07:08:16,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095407043] [2022-03-19 07:08:16,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:08:16,798 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 07:08:16,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:08:16,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 07:08:16,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 07:08:16,798 INFO L87 Difference]: Start difference. First operand 947 states and 1349 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 07:08:18,812 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:08:19,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:08:19,275 INFO L93 Difference]: Finished difference Result 2105 states and 3015 transitions. [2022-03-19 07:08:19,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 07:08:19,275 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 172 [2022-03-19 07:08:19,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:08:19,278 INFO L225 Difference]: With dead ends: 2105 [2022-03-19 07:08:19,278 INFO L226 Difference]: Without dead ends: 1174 [2022-03-19 07:08:19,280 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-19 07:08:19,281 INFO L912 BasicCegarLoop]: 224 mSDtfsCounter, 78 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-19 07:08:19,281 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 537 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 490 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-03-19 07:08:19,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1174 states. [2022-03-19 07:08:19,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1174 to 955. [2022-03-19 07:08:19,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 955 states, 950 states have (on average 1.4242105263157894) internal successors, (1353), 950 states have internal predecessors, (1353), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 07:08:19,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 955 states to 955 states and 1357 transitions. [2022-03-19 07:08:19,330 INFO L78 Accepts]: Start accepts. Automaton has 955 states and 1357 transitions. Word has length 172 [2022-03-19 07:08:19,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:08:19,330 INFO L478 AbstractCegarLoop]: Abstraction has 955 states and 1357 transitions. [2022-03-19 07:08:19,330 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 07:08:19,330 INFO L276 IsEmpty]: Start isEmpty. Operand 955 states and 1357 transitions. [2022-03-19 07:08:19,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-03-19 07:08:19,332 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:08:19,332 INFO L500 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 7, 6, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:08:19,332 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-03-19 07:08:19,332 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:08:19,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:08:19,333 INFO L85 PathProgramCache]: Analyzing trace with hash -68628705, now seen corresponding path program 1 times [2022-03-19 07:08:19,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:08:19,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [352552751] [2022-03-19 07:08:36,933 WARN L232 SmtUtils]: Spent 11.92s on a formula simplification that was a NOOP. DAG size: 228 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-19 07:08:43,443 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 07:08:43,444 INFO L85 PathProgramCache]: Analyzing trace with hash -68628705, now seen corresponding path program 2 times [2022-03-19 07:08:43,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:08:43,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647441746] [2022-03-19 07:08:43,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:08:43,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:08:43,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:08:43,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:08:43,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:08:43,616 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 273 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-03-19 07:08:43,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:08:43,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647441746] [2022-03-19 07:08:43,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647441746] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:08:43,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:08:43,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 07:08:43,617 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:08:43,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [352552751] [2022-03-19 07:08:43,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [352552751] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:08:43,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:08:43,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 07:08:43,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069302121] [2022-03-19 07:08:43,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:08:43,618 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 07:08:43,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:08:43,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 07:08:43,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 07:08:43,618 INFO L87 Difference]: Start difference. First operand 955 states and 1357 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 07:08:45,626 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:08:46,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:08:46,054 INFO L93 Difference]: Finished difference Result 2253 states and 3213 transitions. [2022-03-19 07:08:46,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 07:08:46,054 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 172 [2022-03-19 07:08:46,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:08:46,058 INFO L225 Difference]: With dead ends: 2253 [2022-03-19 07:08:46,058 INFO L226 Difference]: Without dead ends: 1314 [2022-03-19 07:08:46,059 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-19 07:08:46,059 INFO L912 BasicCegarLoop]: 97 mSDtfsCounter, 107 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 46 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-03-19 07:08:46,059 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 278 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 382 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-03-19 07:08:46,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1314 states. [2022-03-19 07:08:46,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1314 to 970. [2022-03-19 07:08:46,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 970 states, 965 states have (on average 1.427979274611399) internal successors, (1378), 965 states have internal predecessors, (1378), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 07:08:46,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1382 transitions. [2022-03-19 07:08:46,112 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1382 transitions. Word has length 172 [2022-03-19 07:08:46,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:08:46,112 INFO L478 AbstractCegarLoop]: Abstraction has 970 states and 1382 transitions. [2022-03-19 07:08:46,112 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 07:08:46,112 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1382 transitions. [2022-03-19 07:08:46,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-03-19 07:08:46,114 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:08:46,114 INFO L500 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 7, 6, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:08:46,114 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-03-19 07:08:46,114 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:08:46,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:08:46,115 INFO L85 PathProgramCache]: Analyzing trace with hash 506446570, now seen corresponding path program 1 times [2022-03-19 07:08:46,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:08:46,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1517923158] [2022-03-19 07:09:03,175 WARN L232 SmtUtils]: Spent 11.77s on a formula simplification that was a NOOP. DAG size: 228 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-03-19 07:09:09,568 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 07:09:09,568 INFO L85 PathProgramCache]: Analyzing trace with hash 506446570, now seen corresponding path program 2 times [2022-03-19 07:09:09,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:09:09,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375894784] [2022-03-19 07:09:09,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:09:09,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:09:09,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:09:09,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:09:09,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:09:09,760 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 105 proven. 5 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2022-03-19 07:09:09,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:09:09,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375894784] [2022-03-19 07:09:09,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375894784] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 07:09:09,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707150671] [2022-03-19 07:09:09,761 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 07:09:09,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 07:09:09,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 07:09:09,763 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) [2022-03-19 07:09:09,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-19 07:10:32,997 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-19 07:10:32,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 07:10:33,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 1545 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-19 07:10:33,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 07:10:33,151 INFO L356 Elim1Store]: treesize reduction 54, result has 44.3 percent of original size [2022-03-19 07:10:33,151 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 68 treesize of output 143 [2022-03-19 07:10:33,161 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 123 treesize of output 63 [2022-03-19 07:10:33,165 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2022-03-19 07:10:33,168 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9