/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_srvr.blast.07.i.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-20 17:32:58,078 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 17:32:58,080 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 17:32:58,128 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-20 17:32:58,128 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-20 17:32:58,129 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-20 17:32:58,132 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-20 17:32:58,134 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-20 17:32:58,136 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-20 17:32:58,140 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-20 17:32:58,141 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-20 17:32:58,141 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-20 17:32:58,142 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-20 17:32:58,142 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-20 17:32:58,144 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-20 17:32:58,147 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-20 17:32:58,148 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-20 17:32:58,148 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-20 17:32:58,150 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-20 17:32:58,155 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-20 17:32:58,157 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-20 17:32:58,158 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-20 17:32:58,159 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-20 17:32:58,159 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-20 17:32:58,161 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-20 17:32:58,167 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-20 17:32:58,174 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-20 17:32:58,175 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-20 17:32:58,176 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-20 17:32:58,177 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-03-20 17:32:58,186 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 17:32:58,186 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 17:32:58,188 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 17:32:58,188 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-20 17:32:58,188 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 17:32:58,188 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-20 17:32:58,188 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 17:32:58,189 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 17:32:58,189 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 17:32:58,189 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 17:32:58,189 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-20 17:32:58,189 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 17:32:58,189 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 17:32:58,189 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 17:32:58,190 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 17:32:58,190 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 17:32:58,190 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-20 17:32:58,190 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 17:32:58,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 17:32:58,190 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 17:32:58,190 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-20 17:32:58,190 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-03-20 17:32:58,190 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-03-20 17:32:58,191 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-20 17:32:58,191 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-03-20 17:32:58,191 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 17:32:58,431 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 17:32:58,448 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 17:32:58,450 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 17:32:58,451 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 17:32:58,452 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 17:32:58,453 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/openssl/s3_srvr.blast.07.i.cil-1.c [2022-03-20 17:32:58,508 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3507748e1/b68e3e99209846e58475a95b0378e623/FLAG0d82aa269 [2022-03-20 17:32:58,955 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 17:32:58,958 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/openssl/s3_srvr.blast.07.i.cil-1.c [2022-03-20 17:32:58,988 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3507748e1/b68e3e99209846e58475a95b0378e623/FLAG0d82aa269 [2022-03-20 17:32:59,254 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3507748e1/b68e3e99209846e58475a95b0378e623 [2022-03-20 17:32:59,257 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 17:32:59,259 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-20 17:32:59,262 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 17:32:59,262 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 17:32:59,266 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 17:32:59,266 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 05:32:59" (1/1) ... [2022-03-20 17:32:59,267 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d3deba1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:32:59, skipping insertion in model container [2022-03-20 17:32:59,267 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 05:32:59" (1/1) ... [2022-03-20 17:32:59,273 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 17:32:59,313 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 17:32:59,647 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/openssl/s3_srvr.blast.07.i.cil-1.c[74369,74382] [2022-03-20 17:32:59,666 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 17:32:59,676 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 17:32:59,805 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/openssl/s3_srvr.blast.07.i.cil-1.c[74369,74382] [2022-03-20 17:32:59,808 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 17:32:59,830 INFO L208 MainTranslator]: Completed translation [2022-03-20 17:32:59,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:32:59 WrapperNode [2022-03-20 17:32:59,831 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 17:32:59,832 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 17:32:59,833 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 17:32:59,833 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 17:32:59,842 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:32:59" (1/1) ... [2022-03-20 17:32:59,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:32:59" (1/1) ... [2022-03-20 17:32:59,878 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:32:59" (1/1) ... [2022-03-20 17:32:59,878 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:32:59" (1/1) ... [2022-03-20 17:32:59,924 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:32:59" (1/1) ... [2022-03-20 17:32:59,931 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:32:59" (1/1) ... [2022-03-20 17:32:59,934 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:32:59" (1/1) ... [2022-03-20 17:32:59,939 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 17:32:59,939 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 17:32:59,940 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 17:32:59,940 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 17:32:59,944 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:32:59" (1/1) ... [2022-03-20 17:32:59,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 17:32:59,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:32:59,972 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-20 17:32:59,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-20 17:33:00,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 17:33:00,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 17:33:00,018 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 17:33:00,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_get_server_method [2022-03-20 17:33:00,018 INFO L138 BoogieDeclarations]: Found implementation of procedure SSLv3_server_method [2022-03-20 17:33:00,018 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 17:33:00,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2022-03-20 17:33:00,018 INFO L138 BoogieDeclarations]: Found implementation of procedure sslv3_base_method [2022-03-20 17:33:00,018 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-03-20 17:33:00,019 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-03-20 17:33:00,019 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-20 17:33:00,019 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 17:33:00,020 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 17:33:00,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 17:33:00,020 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-03-20 17:33:00,020 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-03-20 17:33:00,020 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-20 17:33:00,020 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-03-20 17:33:00,020 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2022-03-20 17:33:00,020 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2022-03-20 17:33:00,020 INFO L130 BoogieDeclarations]: Found specification of procedure SSLv3_server_method [2022-03-20 17:33:00,021 INFO L130 BoogieDeclarations]: Found specification of procedure sslv3_base_method [2022-03-20 17:33:00,021 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2022-03-20 17:33:00,021 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_get_server_method [2022-03-20 17:33:00,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-03-20 17:33:00,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-03-20 17:33:00,021 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 17:33:00,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-03-20 17:33:00,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 17:33:00,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-03-20 17:33:00,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 17:33:00,021 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2022-03-20 17:33:00,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-03-20 17:33:00,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 17:33:00,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 17:33:00,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 17:33:00,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-03-20 17:33:00,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-03-20 17:33:00,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-03-20 17:33:00,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-03-20 17:33:00,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 17:33:00,193 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 17:33:00,194 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 17:33:00,912 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:33:01,446 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2022-03-20 17:33:01,447 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2022-03-20 17:33:01,473 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 17:33:01,483 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 17:33:01,484 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-20 17:33:01,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 05:33:01 BoogieIcfgContainer [2022-03-20 17:33:01,486 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 17:33:01,489 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 17:33:01,489 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 17:33:01,492 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 17:33:01,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 05:32:59" (1/3) ... [2022-03-20 17:33:01,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@110160c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 05:33:01, skipping insertion in model container [2022-03-20 17:33:01,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:32:59" (2/3) ... [2022-03-20 17:33:01,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@110160c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 05:33:01, skipping insertion in model container [2022-03-20 17:33:01,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 05:33:01" (3/3) ... [2022-03-20 17:33:01,495 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.07.i.cil-1.c [2022-03-20 17:33:01,499 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-20 17:33:01,499 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 17:33:01,551 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 17:33:01,557 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-20 17:33:01,557 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 17:33:01,571 INFO L276 IsEmpty]: Start isEmpty. Operand has 158 states, 150 states have (on average 1.7066666666666668) internal successors, (256), 151 states have internal predecessors, (256), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-20 17:33:01,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-03-20 17:33:01,581 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:33:01,582 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:33:01,582 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:33:01,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:33:01,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1538020646, now seen corresponding path program 1 times [2022-03-20 17:33:01,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:33:01,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [461340920] [2022-03-20 17:33:01,602 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:33:01,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1538020646, now seen corresponding path program 2 times [2022-03-20 17:33:01,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:33:01,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604719772] [2022-03-20 17:33:01,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:33:01,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:33:01,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:02,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:33:02,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:02,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:33:02,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:33:02,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604719772] [2022-03-20 17:33:02,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604719772] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:33:02,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:33:02,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:33:02,138 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:33:02,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [461340920] [2022-03-20 17:33:02,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [461340920] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:33:02,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:33:02,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:33:02,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120375182] [2022-03-20 17:33:02,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:33:02,143 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 17:33:02,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:33:02,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 17:33:02,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-20 17:33:02,175 INFO L87 Difference]: Start difference. First operand has 158 states, 150 states have (on average 1.7066666666666668) internal successors, (256), 151 states have internal predecessors, (256), 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 7.6) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:33:04,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:33:04,826 INFO L93 Difference]: Finished difference Result 428 states and 723 transitions. [2022-03-20 17:33:04,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 17:33:04,829 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 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 42 [2022-03-20 17:33:04,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:33:04,861 INFO L225 Difference]: With dead ends: 428 [2022-03-20 17:33:04,861 INFO L226 Difference]: Without dead ends: 259 [2022-03-20 17:33:04,864 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-20 17:33:04,867 INFO L913 BasicCegarLoop]: 157 mSDtfsCounter, 163 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-03-20 17:33:04,868 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 461 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-03-20 17:33:04,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2022-03-20 17:33:04,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 170. [2022-03-20 17:33:04,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 165 states have (on average 1.5818181818181818) internal successors, (261), 165 states have internal predecessors, (261), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:33:04,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 265 transitions. [2022-03-20 17:33:04,916 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 265 transitions. Word has length 42 [2022-03-20 17:33:04,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:33:04,916 INFO L478 AbstractCegarLoop]: Abstraction has 170 states and 265 transitions. [2022-03-20 17:33:04,917 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:33:04,917 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 265 transitions. [2022-03-20 17:33:04,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-03-20 17:33:04,918 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:33:04,919 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:33:04,919 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-20 17:33:04,919 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:33:04,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:33:04,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1015183371, now seen corresponding path program 1 times [2022-03-20 17:33:04,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:33:04,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [666544977] [2022-03-20 17:33:04,921 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:33:04,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1015183371, now seen corresponding path program 2 times [2022-03-20 17:33:04,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:33:04,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782272983] [2022-03-20 17:33:04,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:33:04,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:33:05,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:05,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:33:05,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:05,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:33:05,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:33:05,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782272983] [2022-03-20 17:33:05,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782272983] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:33:05,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:33:05,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:33:05,159 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:33:05,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [666544977] [2022-03-20 17:33:05,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [666544977] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:33:05,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:33:05,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:33:05,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500917163] [2022-03-20 17:33:05,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:33:05,161 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 17:33:05,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:33:05,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 17:33:05,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-20 17:33:05,164 INFO L87 Difference]: Start difference. First operand 170 states and 265 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:33:08,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:33:08,070 INFO L93 Difference]: Finished difference Result 442 states and 693 transitions. [2022-03-20 17:33:08,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 17:33:08,071 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (3), 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 43 [2022-03-20 17:33:08,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:33:08,073 INFO L225 Difference]: With dead ends: 442 [2022-03-20 17:33:08,073 INFO L226 Difference]: Without dead ends: 287 [2022-03-20 17:33:08,074 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-20 17:33:08,075 INFO L913 BasicCegarLoop]: 117 mSDtfsCounter, 130 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-03-20 17:33:08,076 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 342 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-03-20 17:33:08,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-03-20 17:33:08,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 199. [2022-03-20 17:33:08,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 194 states have (on average 1.6134020618556701) internal successors, (313), 194 states have internal predecessors, (313), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:33:08,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 317 transitions. [2022-03-20 17:33:08,102 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 317 transitions. Word has length 43 [2022-03-20 17:33:08,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:33:08,102 INFO L478 AbstractCegarLoop]: Abstraction has 199 states and 317 transitions. [2022-03-20 17:33:08,102 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:33:08,102 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 317 transitions. [2022-03-20 17:33:08,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-03-20 17:33:08,104 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:33:08,104 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:33:08,105 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-20 17:33:08,105 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:33:08,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:33:08,105 INFO L85 PathProgramCache]: Analyzing trace with hash 887448580, now seen corresponding path program 1 times [2022-03-20 17:33:08,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:33:08,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1111529988] [2022-03-20 17:33:08,106 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:33:08,106 INFO L85 PathProgramCache]: Analyzing trace with hash 887448580, now seen corresponding path program 2 times [2022-03-20 17:33:08,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:33:08,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227268911] [2022-03-20 17:33:08,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:33:08,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:33:08,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:08,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:33:08,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:08,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:33:08,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:33:08,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227268911] [2022-03-20 17:33:08,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227268911] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:33:08,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:33:08,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:33:08,256 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:33:08,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1111529988] [2022-03-20 17:33:08,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1111529988] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:33:08,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:33:08,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:33:08,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640949198] [2022-03-20 17:33:08,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:33:08,258 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 17:33:08,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:33:08,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 17:33:08,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-20 17:33:08,259 INFO L87 Difference]: Start difference. First operand 199 states and 317 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:33:10,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:33:10,496 INFO L93 Difference]: Finished difference Result 501 states and 796 transitions. [2022-03-20 17:33:10,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 17:33:10,497 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (3), 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 48 [2022-03-20 17:33:10,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:33:10,499 INFO L225 Difference]: With dead ends: 501 [2022-03-20 17:33:10,499 INFO L226 Difference]: Without dead ends: 317 [2022-03-20 17:33:10,501 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-20 17:33:10,502 INFO L913 BasicCegarLoop]: 117 mSDtfsCounter, 119 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-03-20 17:33:10,503 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 342 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-03-20 17:33:10,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2022-03-20 17:33:10,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 239. [2022-03-20 17:33:10,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 234 states have (on average 1.641025641025641) internal successors, (384), 234 states have internal predecessors, (384), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:33:10,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 388 transitions. [2022-03-20 17:33:10,521 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 388 transitions. Word has length 48 [2022-03-20 17:33:10,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:33:10,521 INFO L478 AbstractCegarLoop]: Abstraction has 239 states and 388 transitions. [2022-03-20 17:33:10,521 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:33:10,522 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 388 transitions. [2022-03-20 17:33:10,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-03-20 17:33:10,526 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:33:10,526 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:33:10,527 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-20 17:33:10,527 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:33:10,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:33:10,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1734094884, now seen corresponding path program 1 times [2022-03-20 17:33:10,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:33:10,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1681189072] [2022-03-20 17:33:10,528 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:33:10,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1734094884, now seen corresponding path program 2 times [2022-03-20 17:33:10,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:33:10,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399656640] [2022-03-20 17:33:10,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:33:10,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:33:10,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:10,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:33:10,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:10,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:33:10,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:33:10,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399656640] [2022-03-20 17:33:10,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399656640] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:33:10,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:33:10,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:33:10,697 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:33:10,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1681189072] [2022-03-20 17:33:10,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1681189072] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:33:10,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:33:10,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:33:10,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9023827] [2022-03-20 17:33:10,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:33:10,701 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 17:33:10,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:33:10,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 17:33:10,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-20 17:33:10,706 INFO L87 Difference]: Start difference. First operand 239 states and 388 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:33:12,276 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:33:14,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:33:14,175 INFO L93 Difference]: Finished difference Result 551 states and 886 transitions. [2022-03-20 17:33:14,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 17:33:14,175 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (3), 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 49 [2022-03-20 17:33:14,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:33:14,177 INFO L225 Difference]: With dead ends: 551 [2022-03-20 17:33:14,177 INFO L226 Difference]: Without dead ends: 327 [2022-03-20 17:33:14,179 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-20 17:33:14,179 INFO L913 BasicCegarLoop]: 124 mSDtfsCounter, 118 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-03-20 17:33:14,180 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 356 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-03-20 17:33:14,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2022-03-20 17:33:14,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 250. [2022-03-20 17:33:14,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 245 states have (on average 1.653061224489796) internal successors, (405), 245 states have internal predecessors, (405), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:33:14,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 409 transitions. [2022-03-20 17:33:14,196 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 409 transitions. Word has length 49 [2022-03-20 17:33:14,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:33:14,197 INFO L478 AbstractCegarLoop]: Abstraction has 250 states and 409 transitions. [2022-03-20 17:33:14,197 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:33:14,197 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 409 transitions. [2022-03-20 17:33:14,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-20 17:33:14,199 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:33:14,199 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:33:14,199 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-20 17:33:14,199 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:33:14,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:33:14,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1073389890, now seen corresponding path program 1 times [2022-03-20 17:33:14,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:33:14,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [269863252] [2022-03-20 17:33:14,225 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:33:14,225 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:33:14,226 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:33:14,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1073389890, now seen corresponding path program 2 times [2022-03-20 17:33:14,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:33:14,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919799987] [2022-03-20 17:33:14,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:33:14,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:33:14,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:14,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:33:14,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:14,363 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:33:14,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:33:14,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919799987] [2022-03-20 17:33:14,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919799987] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:33:14,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:33:14,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:33:14,364 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:33:14,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [269863252] [2022-03-20 17:33:14,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [269863252] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:33:14,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:33:14,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:33:14,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395783185] [2022-03-20 17:33:14,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:33:14,365 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 17:33:14,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:33:14,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 17:33:14,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-20 17:33:14,366 INFO L87 Difference]: Start difference. First operand 250 states and 409 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:33:16,375 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:33:16,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:33:16,983 INFO L93 Difference]: Finished difference Result 602 states and 977 transitions. [2022-03-20 17:33:16,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 17:33:16,987 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 70 [2022-03-20 17:33:16,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:33:16,989 INFO L225 Difference]: With dead ends: 602 [2022-03-20 17:33:16,990 INFO L226 Difference]: Without dead ends: 367 [2022-03-20 17:33:16,990 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-20 17:33:16,992 INFO L913 BasicCegarLoop]: 124 mSDtfsCounter, 131 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 60 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-03-20 17:33:16,992 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 356 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 481 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2022-03-20 17:33:16,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2022-03-20 17:33:17,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 276. [2022-03-20 17:33:17,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 271 states have (on average 1.6568265682656826) internal successors, (449), 271 states have internal predecessors, (449), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:33:17,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 453 transitions. [2022-03-20 17:33:17,016 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 453 transitions. Word has length 70 [2022-03-20 17:33:17,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:33:17,016 INFO L478 AbstractCegarLoop]: Abstraction has 276 states and 453 transitions. [2022-03-20 17:33:17,017 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:33:17,017 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 453 transitions. [2022-03-20 17:33:17,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-20 17:33:17,018 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:33:17,018 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:33:17,019 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-20 17:33:17,019 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:33:17,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:33:17,019 INFO L85 PathProgramCache]: Analyzing trace with hash -339232893, now seen corresponding path program 1 times [2022-03-20 17:33:17,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:33:17,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1757089453] [2022-03-20 17:33:17,032 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:33:17,032 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:33:17,032 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:33:17,032 INFO L85 PathProgramCache]: Analyzing trace with hash -339232893, now seen corresponding path program 2 times [2022-03-20 17:33:17,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:33:17,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069637208] [2022-03-20 17:33:17,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:33:17,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:33:17,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:17,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:33:17,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:17,188 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:33:17,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:33:17,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069637208] [2022-03-20 17:33:17,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069637208] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:33:17,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:33:17,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:33:17,189 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:33:17,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1757089453] [2022-03-20 17:33:17,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1757089453] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:33:17,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:33:17,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:33:17,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464497205] [2022-03-20 17:33:17,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:33:17,190 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 17:33:17,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:33:17,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 17:33:17,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-20 17:33:17,191 INFO L87 Difference]: Start difference. First operand 276 states and 453 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:33:19,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:33:19,991 INFO L93 Difference]: Finished difference Result 614 states and 994 transitions. [2022-03-20 17:33:19,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 17:33:19,992 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 71 [2022-03-20 17:33:19,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:33:19,994 INFO L225 Difference]: With dead ends: 614 [2022-03-20 17:33:19,994 INFO L226 Difference]: Without dead ends: 353 [2022-03-20 17:33:19,995 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-20 17:33:19,996 INFO L913 BasicCegarLoop]: 142 mSDtfsCounter, 130 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-03-20 17:33:19,996 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 392 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-03-20 17:33:19,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2022-03-20 17:33:20,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 276. [2022-03-20 17:33:20,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 271 states have (on average 1.6457564575645756) internal successors, (446), 271 states have internal predecessors, (446), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:33:20,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 450 transitions. [2022-03-20 17:33:20,026 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 450 transitions. Word has length 71 [2022-03-20 17:33:20,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:33:20,027 INFO L478 AbstractCegarLoop]: Abstraction has 276 states and 450 transitions. [2022-03-20 17:33:20,027 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:33:20,027 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 450 transitions. [2022-03-20 17:33:20,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-20 17:33:20,028 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:33:20,028 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:33:20,028 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-20 17:33:20,028 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:33:20,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:33:20,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1306774635, now seen corresponding path program 1 times [2022-03-20 17:33:20,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:33:20,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [256389788] [2022-03-20 17:33:20,036 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:33:20,036 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:33:20,036 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:33:20,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1306774635, now seen corresponding path program 2 times [2022-03-20 17:33:20,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:33:20,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763450883] [2022-03-20 17:33:20,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:33:20,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:33:20,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:20,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:33:20,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:20,144 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:33:20,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:33:20,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763450883] [2022-03-20 17:33:20,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763450883] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:33:20,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:33:20,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:33:20,145 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:33:20,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [256389788] [2022-03-20 17:33:20,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [256389788] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:33:20,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:33:20,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:33:20,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358912586] [2022-03-20 17:33:20,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:33:20,146 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 17:33:20,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:33:20,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 17:33:20,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-20 17:33:20,146 INFO L87 Difference]: Start difference. First operand 276 states and 450 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:33:22,775 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:33:23,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:33:23,954 INFO L93 Difference]: Finished difference Result 690 states and 1122 transitions. [2022-03-20 17:33:23,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 17:33:23,955 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 71 [2022-03-20 17:33:23,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:33:23,957 INFO L225 Difference]: With dead ends: 690 [2022-03-20 17:33:23,957 INFO L226 Difference]: Without dead ends: 429 [2022-03-20 17:33:23,958 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-20 17:33:23,959 INFO L913 BasicCegarLoop]: 153 mSDtfsCounter, 123 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-03-20 17:33:23,959 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 414 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-03-20 17:33:23,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2022-03-20 17:33:23,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 340. [2022-03-20 17:33:23,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 335 states have (on average 1.653731343283582) internal successors, (554), 335 states have internal predecessors, (554), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:33:23,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 558 transitions. [2022-03-20 17:33:23,980 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 558 transitions. Word has length 71 [2022-03-20 17:33:23,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:33:23,981 INFO L478 AbstractCegarLoop]: Abstraction has 340 states and 558 transitions. [2022-03-20 17:33:23,981 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:33:23,981 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 558 transitions. [2022-03-20 17:33:23,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-03-20 17:33:23,982 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:33:23,982 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-03-20 17:33:23,982 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-20 17:33:23,983 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:33:23,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:33:23,983 INFO L85 PathProgramCache]: Analyzing trace with hash -351909833, now seen corresponding path program 1 times [2022-03-20 17:33:23,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:33:23,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1999016718] [2022-03-20 17:33:23,992 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:33:23,992 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:33:23,992 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:33:23,992 INFO L85 PathProgramCache]: Analyzing trace with hash -351909833, now seen corresponding path program 2 times [2022-03-20 17:33:23,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:33:23,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995317183] [2022-03-20 17:33:23,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:33:23,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:33:24,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:24,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:33:24,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:24,139 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:33:24,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:33:24,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995317183] [2022-03-20 17:33:24,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995317183] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:33:24,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:33:24,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:33:24,140 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:33:24,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1999016718] [2022-03-20 17:33:24,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1999016718] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:33:24,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:33:24,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:33:24,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976346481] [2022-03-20 17:33:24,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:33:24,141 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 17:33:24,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:33:24,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 17:33:24,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-20 17:33:24,141 INFO L87 Difference]: Start difference. First operand 340 states and 558 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:33:25,776 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:33:27,796 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:33:28,895 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:33:30,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:33:30,232 INFO L93 Difference]: Finished difference Result 782 states and 1272 transitions. [2022-03-20 17:33:30,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 17:33:30,233 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 82 [2022-03-20 17:33:30,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:33:30,235 INFO L225 Difference]: With dead ends: 782 [2022-03-20 17:33:30,235 INFO L226 Difference]: Without dead ends: 457 [2022-03-20 17:33:30,236 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-20 17:33:30,237 INFO L913 BasicCegarLoop]: 134 mSDtfsCounter, 119 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 58 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-03-20 17:33:30,237 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 376 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 494 Invalid, 1 Unknown, 0 Unchecked, 6.0s Time] [2022-03-20 17:33:30,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2022-03-20 17:33:30,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 377. [2022-03-20 17:33:30,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 372 states have (on average 1.6559139784946237) internal successors, (616), 372 states have internal predecessors, (616), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:33:30,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 620 transitions. [2022-03-20 17:33:30,260 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 620 transitions. Word has length 82 [2022-03-20 17:33:30,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:33:30,260 INFO L478 AbstractCegarLoop]: Abstraction has 377 states and 620 transitions. [2022-03-20 17:33:30,260 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:33:30,260 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 620 transitions. [2022-03-20 17:33:30,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-03-20 17:33:30,262 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:33:30,262 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-03-20 17:33:30,262 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-20 17:33:30,262 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:33:30,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:33:30,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1069537033, now seen corresponding path program 1 times [2022-03-20 17:33:30,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:33:30,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [696544407] [2022-03-20 17:33:30,271 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:33:30,272 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:33:30,272 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:33:30,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1069537033, now seen corresponding path program 2 times [2022-03-20 17:33:30,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:33:30,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696931997] [2022-03-20 17:33:30,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:33:30,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:33:30,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:30,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:33:30,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:30,392 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:33:30,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:33:30,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696931997] [2022-03-20 17:33:30,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696931997] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:33:30,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:33:30,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:33:30,393 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:33:30,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [696544407] [2022-03-20 17:33:30,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [696544407] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:33:30,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:33:30,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:33:30,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932124326] [2022-03-20 17:33:30,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:33:30,394 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 17:33:30,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:33:30,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 17:33:30,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-20 17:33:30,395 INFO L87 Difference]: Start difference. First operand 377 states and 620 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:33:32,191 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:33:34,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:33:34,508 INFO L93 Difference]: Finished difference Result 816 states and 1328 transitions. [2022-03-20 17:33:34,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 17:33:34,508 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 83 [2022-03-20 17:33:34,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:33:34,510 INFO L225 Difference]: With dead ends: 816 [2022-03-20 17:33:34,511 INFO L226 Difference]: Without dead ends: 454 [2022-03-20 17:33:34,511 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-20 17:33:34,512 INFO L913 BasicCegarLoop]: 142 mSDtfsCounter, 118 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-03-20 17:33:34,512 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 392 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-03-20 17:33:34,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2022-03-20 17:33:34,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 377. [2022-03-20 17:33:34,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 372 states have (on average 1.6505376344086022) internal successors, (614), 372 states have internal predecessors, (614), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:33:34,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 618 transitions. [2022-03-20 17:33:34,535 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 618 transitions. Word has length 83 [2022-03-20 17:33:34,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:33:34,535 INFO L478 AbstractCegarLoop]: Abstraction has 377 states and 618 transitions. [2022-03-20 17:33:34,536 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:33:34,536 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 618 transitions. [2022-03-20 17:33:34,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-03-20 17:33:34,537 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:33:34,537 INFO L499 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:33:34,537 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-20 17:33:34,537 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:33:34,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:33:34,538 INFO L85 PathProgramCache]: Analyzing trace with hash -724966751, now seen corresponding path program 1 times [2022-03-20 17:33:34,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:33:34,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1182748780] [2022-03-20 17:33:34,546 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:33:34,547 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:33:34,547 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:33:34,547 INFO L85 PathProgramCache]: Analyzing trace with hash -724966751, now seen corresponding path program 2 times [2022-03-20 17:33:34,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:33:34,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131477038] [2022-03-20 17:33:34,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:33:34,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:33:34,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:34,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:33:34,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:34,650 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-03-20 17:33:34,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:33:34,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131477038] [2022-03-20 17:33:34,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131477038] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:33:34,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:33:34,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:33:34,651 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:33:34,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1182748780] [2022-03-20 17:33:34,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1182748780] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:33:34,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:33:34,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:33:34,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362093114] [2022-03-20 17:33:34,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:33:34,651 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 17:33:34,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:33:34,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 17:33:34,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-20 17:33:34,652 INFO L87 Difference]: Start difference. First operand 377 states and 618 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:33:36,980 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:33:39,305 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:33:39,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:33:39,822 INFO L93 Difference]: Finished difference Result 813 states and 1325 transitions. [2022-03-20 17:33:39,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 17:33:39,823 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (3), 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 84 [2022-03-20 17:33:39,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:33:39,825 INFO L225 Difference]: With dead ends: 813 [2022-03-20 17:33:39,825 INFO L226 Difference]: Without dead ends: 451 [2022-03-20 17:33:39,826 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-20 17:33:39,827 INFO L913 BasicCegarLoop]: 151 mSDtfsCounter, 83 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-03-20 17:33:39,827 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 411 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 435 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2022-03-20 17:33:39,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2022-03-20 17:33:39,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 385. [2022-03-20 17:33:39,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 380 states have (on average 1.65) internal successors, (627), 380 states have internal predecessors, (627), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:33:39,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 631 transitions. [2022-03-20 17:33:39,850 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 631 transitions. Word has length 84 [2022-03-20 17:33:39,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:33:39,850 INFO L478 AbstractCegarLoop]: Abstraction has 385 states and 631 transitions. [2022-03-20 17:33:39,851 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:33:39,851 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 631 transitions. [2022-03-20 17:33:39,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-20 17:33:39,852 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:33:39,852 INFO L499 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:33:39,852 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-20 17:33:39,852 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:33:39,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:33:39,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1180490630, now seen corresponding path program 1 times [2022-03-20 17:33:39,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:33:39,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1929946327] [2022-03-20 17:33:39,862 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:33:39,863 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:33:39,863 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:33:39,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1180490630, now seen corresponding path program 2 times [2022-03-20 17:33:39,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:33:39,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186810312] [2022-03-20 17:33:39,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:33:39,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:33:39,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:40,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:33:40,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:40,010 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-03-20 17:33:40,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:33:40,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186810312] [2022-03-20 17:33:40,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186810312] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:33:40,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:33:40,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:33:40,011 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:33:40,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1929946327] [2022-03-20 17:33:40,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1929946327] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:33:40,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:33:40,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:33:40,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843919723] [2022-03-20 17:33:40,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:33:40,011 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 17:33:40,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:33:40,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 17:33:40,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-20 17:33:40,012 INFO L87 Difference]: Start difference. First operand 385 states and 631 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:33:41,532 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:33:43,463 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:33:45,411 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:33:46,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:33:46,011 INFO L93 Difference]: Finished difference Result 824 states and 1337 transitions. [2022-03-20 17:33:46,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 17:33:46,012 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 1 states have call successors, (3), 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 85 [2022-03-20 17:33:46,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:33:46,014 INFO L225 Difference]: With dead ends: 824 [2022-03-20 17:33:46,014 INFO L226 Difference]: Without dead ends: 462 [2022-03-20 17:33:46,015 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-20 17:33:46,016 INFO L913 BasicCegarLoop]: 117 mSDtfsCounter, 138 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-03-20 17:33:46,016 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 342 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-03-20 17:33:46,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2022-03-20 17:33:46,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 385. [2022-03-20 17:33:46,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 380 states have (on average 1.631578947368421) internal successors, (620), 380 states have internal predecessors, (620), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:33:46,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 624 transitions. [2022-03-20 17:33:46,040 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 624 transitions. Word has length 85 [2022-03-20 17:33:46,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:33:46,040 INFO L478 AbstractCegarLoop]: Abstraction has 385 states and 624 transitions. [2022-03-20 17:33:46,040 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:33:46,040 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 624 transitions. [2022-03-20 17:33:46,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-03-20 17:33:46,041 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:33:46,041 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:33:46,041 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-20 17:33:46,042 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:33:46,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:33:46,042 INFO L85 PathProgramCache]: Analyzing trace with hash -289742090, now seen corresponding path program 1 times [2022-03-20 17:33:46,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:33:46,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1495869023] [2022-03-20 17:33:46,055 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:33:46,055 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:33:46,055 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:33:46,055 INFO L85 PathProgramCache]: Analyzing trace with hash -289742090, now seen corresponding path program 2 times [2022-03-20 17:33:46,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:33:46,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414598343] [2022-03-20 17:33:46,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:33:46,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:33:46,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:46,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:33:46,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:46,158 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:33:46,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:33:46,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414598343] [2022-03-20 17:33:46,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414598343] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:33:46,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:33:46,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:33:46,158 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:33:46,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1495869023] [2022-03-20 17:33:46,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1495869023] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:33:46,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:33:46,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:33:46,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964745711] [2022-03-20 17:33:46,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:33:46,159 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 17:33:46,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:33:46,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 17:33:46,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-20 17:33:46,160 INFO L87 Difference]: Start difference. First operand 385 states and 624 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:33:47,224 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:33:49,052 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:33:50,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:33:50,175 INFO L93 Difference]: Finished difference Result 864 states and 1388 transitions. [2022-03-20 17:33:50,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 17:33:50,175 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 91 [2022-03-20 17:33:50,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:33:50,177 INFO L225 Difference]: With dead ends: 864 [2022-03-20 17:33:50,177 INFO L226 Difference]: Without dead ends: 502 [2022-03-20 17:33:50,178 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-20 17:33:50,178 INFO L913 BasicCegarLoop]: 117 mSDtfsCounter, 110 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-03-20 17:33:50,178 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 343 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-03-20 17:33:50,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2022-03-20 17:33:50,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 428. [2022-03-20 17:33:50,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 423 states have (on average 1.6312056737588652) internal successors, (690), 423 states have internal predecessors, (690), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:33:50,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 694 transitions. [2022-03-20 17:33:50,208 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 694 transitions. Word has length 91 [2022-03-20 17:33:50,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:33:50,208 INFO L478 AbstractCegarLoop]: Abstraction has 428 states and 694 transitions. [2022-03-20 17:33:50,208 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:33:50,209 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 694 transitions. [2022-03-20 17:33:50,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-03-20 17:33:50,210 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:33:50,210 INFO L499 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:33:50,210 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-03-20 17:33:50,210 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:33:50,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:33:50,211 INFO L85 PathProgramCache]: Analyzing trace with hash 2016065217, now seen corresponding path program 1 times [2022-03-20 17:33:50,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:33:50,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [30809563] [2022-03-20 17:33:50,227 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:33:50,228 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:33:50,228 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:33:50,228 INFO L85 PathProgramCache]: Analyzing trace with hash 2016065217, now seen corresponding path program 2 times [2022-03-20 17:33:50,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:33:50,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817833367] [2022-03-20 17:33:50,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:33:50,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:33:50,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:50,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:33:50,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:50,347 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-03-20 17:33:50,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:33:50,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817833367] [2022-03-20 17:33:50,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817833367] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:33:50,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:33:50,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:33:50,347 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:33:50,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [30809563] [2022-03-20 17:33:50,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [30809563] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:33:50,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:33:50,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:33:50,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122615412] [2022-03-20 17:33:50,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:33:50,350 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 17:33:50,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:33:50,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 17:33:50,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-20 17:33:50,351 INFO L87 Difference]: Start difference. First operand 428 states and 694 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:33:51,551 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:33:52,664 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:33:55,198 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:33:55,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:33:55,731 INFO L93 Difference]: Finished difference Result 954 states and 1534 transitions. [2022-03-20 17:33:55,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 17:33:55,732 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 92 [2022-03-20 17:33:55,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:33:55,734 INFO L225 Difference]: With dead ends: 954 [2022-03-20 17:33:55,734 INFO L226 Difference]: Without dead ends: 549 [2022-03-20 17:33:55,735 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-20 17:33:55,736 INFO L913 BasicCegarLoop]: 117 mSDtfsCounter, 130 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-03-20 17:33:55,736 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 342 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-03-20 17:33:55,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2022-03-20 17:33:55,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 453. [2022-03-20 17:33:55,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 448 states have (on average 1.6183035714285714) internal successors, (725), 448 states have internal predecessors, (725), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:33:55,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 729 transitions. [2022-03-20 17:33:55,767 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 729 transitions. Word has length 92 [2022-03-20 17:33:55,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:33:55,768 INFO L478 AbstractCegarLoop]: Abstraction has 453 states and 729 transitions. [2022-03-20 17:33:55,768 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:33:55,768 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 729 transitions. [2022-03-20 17:33:55,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-03-20 17:33:55,769 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:33:55,769 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:33:55,769 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-03-20 17:33:55,770 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:33:55,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:33:55,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1117221866, now seen corresponding path program 1 times [2022-03-20 17:33:55,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:33:55,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1170375726] [2022-03-20 17:33:55,783 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:33:55,783 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:33:55,783 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:33:55,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1117221866, now seen corresponding path program 2 times [2022-03-20 17:33:55,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:33:55,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637588105] [2022-03-20 17:33:55,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:33:55,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:33:55,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:55,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:33:55,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:55,885 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-03-20 17:33:55,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:33:55,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637588105] [2022-03-20 17:33:55,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637588105] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:33:55,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:33:55,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:33:55,885 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:33:55,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1170375726] [2022-03-20 17:33:55,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1170375726] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:33:55,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:33:55,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:33:55,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444110093] [2022-03-20 17:33:55,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:33:55,886 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 17:33:55,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:33:55,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 17:33:55,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-20 17:33:55,887 INFO L87 Difference]: Start difference. First operand 453 states and 729 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:33:58,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:33:58,652 INFO L93 Difference]: Finished difference Result 901 states and 1450 transitions. [2022-03-20 17:33:58,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 17:33:58,652 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 92 [2022-03-20 17:33:58,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:33:58,654 INFO L225 Difference]: With dead ends: 901 [2022-03-20 17:33:58,654 INFO L226 Difference]: Without dead ends: 471 [2022-03-20 17:33:58,655 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-20 17:33:58,655 INFO L913 BasicCegarLoop]: 188 mSDtfsCounter, 20 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-03-20 17:33:58,656 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 485 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-03-20 17:33:58,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2022-03-20 17:33:58,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 456. [2022-03-20 17:33:58,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 451 states have (on average 1.6164079822616408) internal successors, (729), 451 states have internal predecessors, (729), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:33:58,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 733 transitions. [2022-03-20 17:33:58,702 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 733 transitions. Word has length 92 [2022-03-20 17:33:58,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:33:58,702 INFO L478 AbstractCegarLoop]: Abstraction has 456 states and 733 transitions. [2022-03-20 17:33:58,702 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:33:58,703 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 733 transitions. [2022-03-20 17:33:58,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-03-20 17:33:58,704 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:33:58,704 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:33:58,704 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-03-20 17:33:58,704 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:33:58,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:33:58,705 INFO L85 PathProgramCache]: Analyzing trace with hash 340309531, now seen corresponding path program 1 times [2022-03-20 17:33:58,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:33:58,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [153805959] [2022-03-20 17:33:58,721 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:33:58,721 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:33:58,721 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:33:58,721 INFO L85 PathProgramCache]: Analyzing trace with hash 340309531, now seen corresponding path program 2 times [2022-03-20 17:33:58,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:33:58,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292903637] [2022-03-20 17:33:58,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:33:58,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:33:58,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:58,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:33:58,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:58,841 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-03-20 17:33:58,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:33:58,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292903637] [2022-03-20 17:33:58,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292903637] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:33:58,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:33:58,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:33:58,842 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:33:58,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [153805959] [2022-03-20 17:33:58,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [153805959] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:33:58,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:33:58,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:33:58,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635773124] [2022-03-20 17:33:58,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:33:58,843 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 17:33:58,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:33:58,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 17:33:58,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-20 17:33:58,844 INFO L87 Difference]: Start difference. First operand 456 states and 733 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:34:01,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:34:01,487 INFO L93 Difference]: Finished difference Result 900 states and 1448 transitions. [2022-03-20 17:34:01,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 17:34:01,487 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 98 [2022-03-20 17:34:01,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:34:01,489 INFO L225 Difference]: With dead ends: 900 [2022-03-20 17:34:01,489 INFO L226 Difference]: Without dead ends: 470 [2022-03-20 17:34:01,490 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-20 17:34:01,491 INFO L913 BasicCegarLoop]: 190 mSDtfsCounter, 27 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-03-20 17:34:01,491 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 489 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-03-20 17:34:01,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2022-03-20 17:34:01,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 456. [2022-03-20 17:34:01,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 451 states have (on average 1.6141906873614191) internal successors, (728), 451 states have internal predecessors, (728), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:34:01,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 732 transitions. [2022-03-20 17:34:01,524 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 732 transitions. Word has length 98 [2022-03-20 17:34:01,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:34:01,524 INFO L478 AbstractCegarLoop]: Abstraction has 456 states and 732 transitions. [2022-03-20 17:34:01,525 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:34:01,525 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 732 transitions. [2022-03-20 17:34:01,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-03-20 17:34:01,526 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:34:01,526 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 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] [2022-03-20 17:34:01,526 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-03-20 17:34:01,526 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:34:01,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:34:01,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1628990895, now seen corresponding path program 1 times [2022-03-20 17:34:01,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:34:01,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [426397634] [2022-03-20 17:34:01,538 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:34:01,539 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:34:01,539 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:34:01,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1628990895, now seen corresponding path program 2 times [2022-03-20 17:34:01,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:34:01,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286808207] [2022-03-20 17:34:01,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:34:01,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:34:01,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:01,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:34:01,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:01,679 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-03-20 17:34:01,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:34:01,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286808207] [2022-03-20 17:34:01,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286808207] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:34:01,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:34:01,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:34:01,680 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:34:01,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [426397634] [2022-03-20 17:34:01,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [426397634] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:34:01,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:34:01,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:34:01,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193333399] [2022-03-20 17:34:01,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:34:01,680 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 17:34:01,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:34:01,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 17:34:01,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-20 17:34:01,681 INFO L87 Difference]: Start difference. First operand 456 states and 732 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:34:03,690 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:34:04,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:34:04,187 INFO L93 Difference]: Finished difference Result 963 states and 1536 transitions. [2022-03-20 17:34:04,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 17:34:04,187 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 98 [2022-03-20 17:34:04,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:34:04,189 INFO L225 Difference]: With dead ends: 963 [2022-03-20 17:34:04,189 INFO L226 Difference]: Without dead ends: 533 [2022-03-20 17:34:04,190 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-20 17:34:04,191 INFO L913 BasicCegarLoop]: 142 mSDtfsCounter, 142 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 58 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-03-20 17:34:04,191 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 392 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 498 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-03-20 17:34:04,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2022-03-20 17:34:04,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 456. [2022-03-20 17:34:04,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 451 states have (on average 1.5920177383592018) internal successors, (718), 451 states have internal predecessors, (718), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:34:04,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 722 transitions. [2022-03-20 17:34:04,225 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 722 transitions. Word has length 98 [2022-03-20 17:34:04,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:34:04,225 INFO L478 AbstractCegarLoop]: Abstraction has 456 states and 722 transitions. [2022-03-20 17:34:04,225 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:34:04,225 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 722 transitions. [2022-03-20 17:34:04,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-03-20 17:34:04,227 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:34:04,227 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1] [2022-03-20 17:34:04,227 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-03-20 17:34:04,227 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:34:04,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:34:04,228 INFO L85 PathProgramCache]: Analyzing trace with hash -218330777, now seen corresponding path program 1 times [2022-03-20 17:34:04,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:34:04,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1250001847] [2022-03-20 17:34:04,238 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:34:04,238 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:34:04,238 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:34:04,238 INFO L85 PathProgramCache]: Analyzing trace with hash -218330777, now seen corresponding path program 2 times [2022-03-20 17:34:04,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:34:04,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430844820] [2022-03-20 17:34:04,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:34:04,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:34:04,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:04,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:34:04,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:04,371 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-03-20 17:34:04,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:34:04,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430844820] [2022-03-20 17:34:04,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430844820] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:34:04,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:34:04,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:34:04,372 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:34:04,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1250001847] [2022-03-20 17:34:04,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1250001847] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:34:04,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:34:04,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:34:04,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839546058] [2022-03-20 17:34:04,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:34:04,373 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 17:34:04,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:34:04,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 17:34:04,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-20 17:34:04,373 INFO L87 Difference]: Start difference. First operand 456 states and 722 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:34:07,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:34:07,198 INFO L93 Difference]: Finished difference Result 962 states and 1516 transitions. [2022-03-20 17:34:07,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 17:34:07,198 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 98 [2022-03-20 17:34:07,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:34:07,200 INFO L225 Difference]: With dead ends: 962 [2022-03-20 17:34:07,200 INFO L226 Difference]: Without dead ends: 532 [2022-03-20 17:34:07,201 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-20 17:34:07,201 INFO L913 BasicCegarLoop]: 143 mSDtfsCounter, 135 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-03-20 17:34:07,201 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 394 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-03-20 17:34:07,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2022-03-20 17:34:07,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 456. [2022-03-20 17:34:07,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 451 states have (on average 1.5698447893569845) internal successors, (708), 451 states have internal predecessors, (708), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:34:07,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 712 transitions. [2022-03-20 17:34:07,236 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 712 transitions. Word has length 98 [2022-03-20 17:34:07,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:34:07,236 INFO L478 AbstractCegarLoop]: Abstraction has 456 states and 712 transitions. [2022-03-20 17:34:07,236 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 17:34:07,236 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 712 transitions. [2022-03-20 17:34:07,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-20 17:34:07,238 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:34:07,238 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 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] [2022-03-20 17:34:07,238 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-03-20 17:34:07,238 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:34:07,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:34:07,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1597835116, now seen corresponding path program 1 times [2022-03-20 17:34:07,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:34:07,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [424751506] [2022-03-20 17:34:07,310 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 19 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-03-20 17:34:07,311 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:34:07,311 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:34:07,312 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:34:07,312 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:34:07,313 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-20 17:34:07,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1651904021, now seen corresponding path program 1 times [2022-03-20 17:34:07,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:34:07,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996882880] [2022-03-20 17:34:07,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:34:07,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:34:07,362 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-03-20 17:34:07,363 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Cannot name open terms at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:232) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:91) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:89) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolationCore.runStrategy(AcceleratedInterpolationCore.java:300) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolationCore.acceleratedInterpolationCoreIsCorrect(AcceleratedInterpolationCore.java:289) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:190) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleAcceleratedInterpolation.construct(IpTcStrategyModuleAcceleratedInterpolation.java:80) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:595) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:349) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:331) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:304) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:264) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:156) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Cannot name open terms at de.uni_freiburg.informatik.ultimate.logic.NoopScript.annotate(NoopScript.java:471) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.annotate(WrapperScript.java:282) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.annotate(WrapperScript.java:282) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.AnnotateAndAssertCodeBlocks.annotateAndAssertTerm(AnnotateAndAssertCodeBlocks.java:192) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.AnnotateAndAssertCodeBlocks.annotateAndAssertNonCall(AnnotateAndAssertCodeBlocks.java:109) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.AnnotateAndAsserter.buildAnnotatedSsaAndAssertTerms(AnnotateAndAsserter.java:101) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.checkTrace(TraceCheck.java:313) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:211) ... 40 more [2022-03-20 17:34:07,370 INFO L158 Benchmark]: Toolchain (without parser) took 68111.27ms. Allocated memory was 188.7MB in the beginning and 240.1MB in the end (delta: 51.4MB). Free memory was 136.7MB in the beginning and 88.9MB in the end (delta: 47.7MB). Peak memory consumption was 100.0MB. Max. memory is 8.0GB. [2022-03-20 17:34:07,371 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 188.7MB. Free memory is still 154.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 17:34:07,371 INFO L158 Benchmark]: CACSL2BoogieTranslator took 569.94ms. Allocated memory is still 188.7MB. Free memory was 136.4MB in the beginning and 144.8MB in the end (delta: -8.5MB). Peak memory consumption was 14.3MB. Max. memory is 8.0GB. [2022-03-20 17:34:07,372 INFO L158 Benchmark]: Boogie Preprocessor took 106.29ms. Allocated memory is still 188.7MB. Free memory was 144.8MB in the beginning and 137.5MB in the end (delta: 7.3MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2022-03-20 17:34:07,372 INFO L158 Benchmark]: RCFGBuilder took 1546.83ms. Allocated memory was 188.7MB in the beginning and 240.1MB in the end (delta: 51.4MB). Free memory was 137.5MB in the beginning and 168.1MB in the end (delta: -30.6MB). Peak memory consumption was 36.9MB. Max. memory is 8.0GB. [2022-03-20 17:34:07,372 INFO L158 Benchmark]: TraceAbstraction took 65880.43ms. Allocated memory is still 240.1MB. Free memory was 167.6MB in the beginning and 88.9MB in the end (delta: 78.6MB). Peak memory consumption was 79.2MB. Max. memory is 8.0GB. [2022-03-20 17:34:07,374 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 188.7MB. Free memory is still 154.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 569.94ms. Allocated memory is still 188.7MB. Free memory was 136.4MB in the beginning and 144.8MB in the end (delta: -8.5MB). Peak memory consumption was 14.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 106.29ms. Allocated memory is still 188.7MB. Free memory was 144.8MB in the beginning and 137.5MB in the end (delta: 7.3MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * RCFGBuilder took 1546.83ms. Allocated memory was 188.7MB in the beginning and 240.1MB in the end (delta: 51.4MB). Free memory was 137.5MB in the beginning and 168.1MB in the end (delta: -30.6MB). Peak memory consumption was 36.9MB. Max. memory is 8.0GB. * TraceAbstraction took 65880.43ms. Allocated memory is still 240.1MB. Free memory was 167.6MB in the beginning and 88.9MB in the end (delta: 78.6MB). Peak memory consumption was 79.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Cannot name open terms de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Cannot name open terms: de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:232) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-03-20 17:34:07,421 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...