/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/openssl/s3_srvr.blast.15.i.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-21 00:10:20,979 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-21 00:10:20,981 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-21 00:10:21,006 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-21 00:10:21,006 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-21 00:10:21,007 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-21 00:10:21,008 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-21 00:10:21,009 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-21 00:10:21,011 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-21 00:10:21,012 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-21 00:10:21,012 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-21 00:10:21,013 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-21 00:10:21,013 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-21 00:10:21,014 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-21 00:10:21,015 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-21 00:10:21,016 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-21 00:10:21,016 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-21 00:10:21,017 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-21 00:10:21,018 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-21 00:10:21,019 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-21 00:10:21,020 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-21 00:10:21,021 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-21 00:10:21,022 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-21 00:10:21,023 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-21 00:10:21,024 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-21 00:10:21,026 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-21 00:10:21,032 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-21 00:10:21,033 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-21 00:10:21,034 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-21 00:10:21,034 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-03-21 00:10:21,040 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-21 00:10:21,041 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-21 00:10:21,041 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-21 00:10:21,042 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-21 00:10:21,042 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-21 00:10:21,042 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-21 00:10:21,042 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-21 00:10:21,042 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-21 00:10:21,042 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-21 00:10:21,042 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-21 00:10:21,042 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-21 00:10:21,042 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-21 00:10:21,042 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-21 00:10:21,043 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-21 00:10:21,043 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-21 00:10:21,043 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-21 00:10:21,043 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-21 00:10:21,043 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-21 00:10:21,043 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-03-21 00:10:21,043 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-03-21 00:10:21,043 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-21 00:10:21,043 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-03-21 00:10:21,044 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-21 00:10:21,202 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-21 00:10:21,224 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-21 00:10:21,226 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-21 00:10:21,227 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-21 00:10:21,227 INFO L275 PluginConnector]: CDTParser initialized [2022-03-21 00:10:21,229 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/openssl/s3_srvr.blast.15.i.cil-1.c [2022-03-21 00:10:21,302 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0122a2489/0bd2d6d52b2f48669bd5c58cea0d9c20/FLAG3c4ccb10b [2022-03-21 00:10:21,733 INFO L306 CDTParser]: Found 1 translation units. [2022-03-21 00:10:21,733 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/openssl/s3_srvr.blast.15.i.cil-1.c [2022-03-21 00:10:21,762 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0122a2489/0bd2d6d52b2f48669bd5c58cea0d9c20/FLAG3c4ccb10b [2022-03-21 00:10:21,778 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0122a2489/0bd2d6d52b2f48669bd5c58cea0d9c20 [2022-03-21 00:10:21,779 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-21 00:10:21,781 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-21 00:10:21,782 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-21 00:10:21,782 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-21 00:10:21,785 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-21 00:10:21,786 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.03 12:10:21" (1/1) ... [2022-03-21 00:10:21,786 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76156aae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.03 12:10:21, skipping insertion in model container [2022-03-21 00:10:21,786 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.03 12:10:21" (1/1) ... [2022-03-21 00:10:21,791 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-21 00:10:21,840 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-21 00:10:22,110 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.15.i.cil-1.c[75550,75563] [2022-03-21 00:10:22,116 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-21 00:10:22,124 INFO L203 MainTranslator]: Completed pre-run [2022-03-21 00:10:22,205 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.15.i.cil-1.c[75550,75563] [2022-03-21 00:10:22,208 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-21 00:10:22,218 INFO L208 MainTranslator]: Completed translation [2022-03-21 00:10:22,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.03 12:10:22 WrapperNode [2022-03-21 00:10:22,218 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-21 00:10:22,219 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-21 00:10:22,219 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-21 00:10:22,219 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-21 00:10:22,226 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.03 12:10:22" (1/1) ... [2022-03-21 00:10:22,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.03 12:10:22" (1/1) ... [2022-03-21 00:10:22,240 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.03 12:10:22" (1/1) ... [2022-03-21 00:10:22,240 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.03 12:10:22" (1/1) ... [2022-03-21 00:10:22,270 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.03 12:10:22" (1/1) ... [2022-03-21 00:10:22,277 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.03 12:10:22" (1/1) ... [2022-03-21 00:10:22,279 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.03 12:10:22" (1/1) ... [2022-03-21 00:10:22,283 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-21 00:10:22,284 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-21 00:10:22,284 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-21 00:10:22,284 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-21 00:10:22,301 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.03 12:10:22" (1/1) ... [2022-03-21 00:10:22,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-21 00:10:22,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:10:22,331 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-21 00:10:22,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-21 00:10:22,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-21 00:10:22,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-21 00:10:22,375 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-21 00:10:22,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_get_server_method [2022-03-21 00:10:22,375 INFO L138 BoogieDeclarations]: Found implementation of procedure SSLv3_server_method [2022-03-21 00:10:22,375 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-21 00:10:22,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2022-03-21 00:10:22,376 INFO L138 BoogieDeclarations]: Found implementation of procedure sslv3_base_method [2022-03-21 00:10:22,376 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-03-21 00:10:22,376 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-03-21 00:10:22,376 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-21 00:10:22,376 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-21 00:10:22,376 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-21 00:10:22,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-21 00:10:22,376 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-03-21 00:10:22,376 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-03-21 00:10:22,389 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-21 00:10:22,389 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-03-21 00:10:22,389 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2022-03-21 00:10:22,389 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2022-03-21 00:10:22,389 INFO L130 BoogieDeclarations]: Found specification of procedure SSLv3_server_method [2022-03-21 00:10:22,389 INFO L130 BoogieDeclarations]: Found specification of procedure sslv3_base_method [2022-03-21 00:10:22,389 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2022-03-21 00:10:22,389 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_get_server_method [2022-03-21 00:10:22,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-03-21 00:10:22,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-03-21 00:10:22,389 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-21 00:10:22,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-03-21 00:10:22,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-21 00:10:22,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-03-21 00:10:22,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-21 00:10:22,390 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2022-03-21 00:10:22,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-03-21 00:10:22,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-21 00:10:22,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-21 00:10:22,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-21 00:10:22,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-03-21 00:10:22,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-03-21 00:10:22,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-03-21 00:10:22,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-03-21 00:10:22,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-21 00:10:22,578 INFO L234 CfgBuilder]: Building ICFG [2022-03-21 00:10:22,580 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-21 00:10:23,557 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-21 00:10:23,994 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2022-03-21 00:10:23,994 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2022-03-21 00:10:24,006 INFO L275 CfgBuilder]: Performing block encoding [2022-03-21 00:10:24,015 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-21 00:10:24,016 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-21 00:10:24,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.03 12:10:24 BoogieIcfgContainer [2022-03-21 00:10:24,018 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-21 00:10:24,020 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-21 00:10:24,020 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-21 00:10:24,023 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-21 00:10:24,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.03 12:10:21" (1/3) ... [2022-03-21 00:10:24,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68d52248 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.03 12:10:24, skipping insertion in model container [2022-03-21 00:10:24,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.03 12:10:22" (2/3) ... [2022-03-21 00:10:24,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68d52248 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.03 12:10:24, skipping insertion in model container [2022-03-21 00:10:24,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.03 12:10:24" (3/3) ... [2022-03-21 00:10:24,026 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.15.i.cil-1.c [2022-03-21 00:10:24,031 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-21 00:10:24,032 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-21 00:10:24,076 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-21 00:10:24,081 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-21 00:10:24,081 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-21 00:10:24,101 INFO L276 IsEmpty]: Start isEmpty. Operand has 161 states, 153 states have (on average 1.7124183006535947) internal successors, (262), 154 states have internal predecessors, (262), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-21 00:10:24,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-03-21 00:10:24,119 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:10:24,120 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:10:24,120 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:10:24,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:10:24,124 INFO L85 PathProgramCache]: Analyzing trace with hash 80900235, now seen corresponding path program 1 times [2022-03-21 00:10:24,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:10:24,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [31784818] [2022-03-21 00:10:24,140 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-21 00:10:24,140 INFO L85 PathProgramCache]: Analyzing trace with hash 80900235, now seen corresponding path program 2 times [2022-03-21 00:10:24,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:10:24,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697199107] [2022-03-21 00:10:24,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:10:24,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:10:24,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:10:24,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:10:24,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:10:24,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:10:24,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:10:24,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697199107] [2022-03-21 00:10:24,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697199107] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:10:24,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:10:24,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:10:24,538 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:10:24,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [31784818] [2022-03-21 00:10:24,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [31784818] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:10:24,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:10:24,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:10:24,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038156013] [2022-03-21 00:10:24,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:10:24,548 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-21 00:10:24,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:10:24,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-21 00:10:24,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-21 00:10:24,570 INFO L87 Difference]: Start difference. First operand has 161 states, 153 states have (on average 1.7124183006535947) internal successors, (262), 154 states have internal predecessors, (262), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-21 00:10:26,955 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:10:28,718 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:10:29,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:10:29,259 INFO L93 Difference]: Finished difference Result 340 states and 572 transitions. [2022-03-21 00:10:29,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-21 00:10:29,262 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (3), 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 50 [2022-03-21 00:10:29,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:10:29,268 INFO L225 Difference]: With dead ends: 340 [2022-03-21 00:10:29,268 INFO L226 Difference]: Without dead ends: 173 [2022-03-21 00:10:29,271 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-21 00:10:29,273 INFO L913 BasicCegarLoop]: 235 mSDtfsCounter, 34 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-03-21 00:10:29,274 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 625 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-03-21 00:10:29,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-03-21 00:10:29,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 156. [2022-03-21 00:10:29,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 151 states have (on average 1.5629139072847682) internal successors, (236), 151 states have internal predecessors, (236), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-21 00:10:29,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 240 transitions. [2022-03-21 00:10:29,307 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 240 transitions. Word has length 50 [2022-03-21 00:10:29,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:10:29,308 INFO L478 AbstractCegarLoop]: Abstraction has 156 states and 240 transitions. [2022-03-21 00:10:29,308 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-21 00:10:29,308 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 240 transitions. [2022-03-21 00:10:29,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-03-21 00:10:29,309 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:10:29,310 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:10:29,310 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-21 00:10:29,310 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:10:29,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:10:29,310 INFO L85 PathProgramCache]: Analyzing trace with hash -450854301, now seen corresponding path program 1 times [2022-03-21 00:10:29,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:10:29,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1009660680] [2022-03-21 00:10:29,320 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:10:29,320 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:10:29,320 INFO L85 PathProgramCache]: Analyzing trace with hash -450854301, now seen corresponding path program 2 times [2022-03-21 00:10:29,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:10:29,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378526629] [2022-03-21 00:10:29,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:10:29,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:10:29,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:10:29,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:10:29,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:10:29,444 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:10:29,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:10:29,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378526629] [2022-03-21 00:10:29,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378526629] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:10:29,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:10:29,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:10:29,445 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:10:29,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1009660680] [2022-03-21 00:10:29,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1009660680] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:10:29,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:10:29,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:10:29,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313512770] [2022-03-21 00:10:29,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:10:29,447 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-21 00:10:29,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:10:29,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-21 00:10:29,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-21 00:10:29,447 INFO L87 Difference]: Start difference. First operand 156 states and 240 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) [2022-03-21 00:10:32,085 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:10:33,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:10:33,734 INFO L93 Difference]: Finished difference Result 303 states and 463 transitions. [2022-03-21 00:10:33,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-21 00:10:33,734 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 63 [2022-03-21 00:10:33,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:10:33,735 INFO L225 Difference]: With dead ends: 303 [2022-03-21 00:10:33,735 INFO L226 Difference]: Without dead ends: 173 [2022-03-21 00:10:33,736 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-21 00:10:33,737 INFO L913 BasicCegarLoop]: 193 mSDtfsCounter, 24 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-03-21 00:10:33,737 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 501 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 369 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2022-03-21 00:10:33,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-03-21 00:10:33,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 156. [2022-03-21 00:10:33,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 151 states have (on average 1.5562913907284768) internal successors, (235), 151 states have internal predecessors, (235), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-21 00:10:33,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 239 transitions. [2022-03-21 00:10:33,747 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 239 transitions. Word has length 63 [2022-03-21 00:10:33,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:10:33,747 INFO L478 AbstractCegarLoop]: Abstraction has 156 states and 239 transitions. [2022-03-21 00:10:33,747 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) [2022-03-21 00:10:33,747 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 239 transitions. [2022-03-21 00:10:33,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-03-21 00:10:33,748 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:10:33,749 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:10:33,749 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-21 00:10:33,749 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:10:33,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:10:33,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1137075757, now seen corresponding path program 1 times [2022-03-21 00:10:33,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:10:33,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1705791629] [2022-03-21 00:10:33,756 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:10:33,756 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:10:33,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1137075757, now seen corresponding path program 2 times [2022-03-21 00:10:33,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:10:33,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389508202] [2022-03-21 00:10:33,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:10:33,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:10:33,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:10:33,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:10:33,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:10:33,864 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:10:33,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:10:33,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389508202] [2022-03-21 00:10:33,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389508202] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:10:33,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:10:33,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:10:33,865 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:10:33,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1705791629] [2022-03-21 00:10:33,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1705791629] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:10:33,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:10:33,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:10:33,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424899735] [2022-03-21 00:10:33,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:10:33,866 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-21 00:10:33,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:10:33,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-21 00:10:33,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-21 00:10:33,866 INFO L87 Difference]: Start difference. First operand 156 states and 239 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-21 00:10:35,883 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:10:36,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:10:36,340 INFO L93 Difference]: Finished difference Result 404 states and 626 transitions. [2022-03-21 00:10:36,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-21 00:10:36,341 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 1 states have call successors, (3), 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 64 [2022-03-21 00:10:36,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:10:36,342 INFO L225 Difference]: With dead ends: 404 [2022-03-21 00:10:36,342 INFO L226 Difference]: Without dead ends: 274 [2022-03-21 00:10:36,343 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-21 00:10:36,344 INFO L913 BasicCegarLoop]: 124 mSDtfsCounter, 152 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 63 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-21 00:10:36,344 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 362 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 477 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-03-21 00:10:36,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-03-21 00:10:36,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 167. [2022-03-21 00:10:36,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 162 states have (on average 1.5432098765432098) internal successors, (250), 162 states have internal predecessors, (250), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-21 00:10:36,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 254 transitions. [2022-03-21 00:10:36,354 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 254 transitions. Word has length 64 [2022-03-21 00:10:36,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:10:36,354 INFO L478 AbstractCegarLoop]: Abstraction has 167 states and 254 transitions. [2022-03-21 00:10:36,354 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-21 00:10:36,354 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 254 transitions. [2022-03-21 00:10:36,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-03-21 00:10:36,355 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:10:36,355 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:10:36,356 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-21 00:10:36,356 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:10:36,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:10:36,356 INFO L85 PathProgramCache]: Analyzing trace with hash 749827687, now seen corresponding path program 1 times [2022-03-21 00:10:36,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:10:36,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [836315673] [2022-03-21 00:10:36,400 ERROR L250 FreeRefinementEngine]: Caught unknown exception: Undeclared function symbol (* (Array Int (Array Int Int)) Int) [2022-03-21 00:10:36,400 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-03-21 00:10:36,401 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Undeclared function symbol (* (Array Int (Array Int Int)) Int) at de.uni_freiburg.informatik.ultimate.logic.Theory.term(Theory.java:1615) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.term(NoopScript.java:401) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.term(NoopScript.java:392) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.term(WrapperScript.java:249) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.term(WrapperScript.java:249) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.mul(SmtUtils.java:597) at de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.qvasr.QvasrUtils.matrixVectorMultiplicationWithVariables(QvasrUtils.java:226) at de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.qvasr.QvasrSummarizer.intVasrAbstractionToFormula(QvasrSummarizer.java:177) at de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.qvasr.QvasrSummarizer.summarizeLoop(QvasrSummarizer.java:140) at de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.qvasr.QvasrLoopSummarization.getQvasrAcceleration(QvasrLoopSummarization.java:87) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.loopaccelerator.AcceleratorQvasr.accelerateLoop(AcceleratorQvasr.java:91) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolationCore.acceleratedInterpolationCoreIsCorrect(AcceleratedInterpolationCore.java:246) 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) [2022-03-21 00:10:36,403 INFO L158 Benchmark]: Toolchain (without parser) took 14622.23ms. Allocated memory was 215.0MB in the beginning and 289.4MB in the end (delta: 74.4MB). Free memory was 162.9MB in the beginning and 157.9MB in the end (delta: 5.0MB). Peak memory consumption was 79.8MB. Max. memory is 8.0GB. [2022-03-21 00:10:36,404 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 215.0MB. Free memory was 182.2MB in the beginning and 182.0MB in the end (delta: 151.9kB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-21 00:10:36,404 INFO L158 Benchmark]: CACSL2BoogieTranslator took 436.06ms. Allocated memory is still 215.0MB. Free memory was 162.7MB in the beginning and 170.0MB in the end (delta: -7.3MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-03-21 00:10:36,404 INFO L158 Benchmark]: Boogie Preprocessor took 64.53ms. Allocated memory is still 215.0MB. Free memory was 170.0MB in the beginning and 162.2MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-03-21 00:10:36,404 INFO L158 Benchmark]: RCFGBuilder took 1734.01ms. Allocated memory was 215.0MB in the beginning and 289.4MB in the end (delta: 74.4MB). Free memory was 162.2MB in the beginning and 232.4MB in the end (delta: -70.2MB). Peak memory consumption was 53.5MB. Max. memory is 8.0GB. [2022-03-21 00:10:36,405 INFO L158 Benchmark]: TraceAbstraction took 12382.77ms. Allocated memory is still 289.4MB. Free memory was 231.9MB in the beginning and 157.9MB in the end (delta: 74.0MB). Peak memory consumption was 74.5MB. Max. memory is 8.0GB. [2022-03-21 00:10:36,406 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 215.0MB. Free memory was 182.2MB in the beginning and 182.0MB in the end (delta: 151.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 436.06ms. Allocated memory is still 215.0MB. Free memory was 162.7MB in the beginning and 170.0MB in the end (delta: -7.3MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 64.53ms. Allocated memory is still 215.0MB. Free memory was 170.0MB in the beginning and 162.2MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * RCFGBuilder took 1734.01ms. Allocated memory was 215.0MB in the beginning and 289.4MB in the end (delta: 74.4MB). Free memory was 162.2MB in the beginning and 232.4MB in the end (delta: -70.2MB). Peak memory consumption was 53.5MB. Max. memory is 8.0GB. * TraceAbstraction took 12382.77ms. Allocated memory is still 289.4MB. Free memory was 231.9MB in the beginning and 157.9MB in the end (delta: 74.0MB). Peak memory consumption was 74.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Undeclared function symbol (* (Array Int (Array Int Int)) Int) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Undeclared function symbol (* (Array Int (Array Int Int)) Int): de.uni_freiburg.informatik.ultimate.logic.Theory.term(Theory.java:1615) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-03-21 00:10:36,431 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...