/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-simplified/s3_srvr_1.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-07 00:49:30,462 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-07 00:49:30,463 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-07 00:49:30,484 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-07 00:49:30,517 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-07 00:49:30,517 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-07 00:49:30,524 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-07 00:49:30,525 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-04-07 00:49:30,534 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-07 00:49:30,534 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-07 00:49:30,535 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-07 00:49:30,535 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-07 00:49:30,535 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-07 00:49:30,535 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-07 00:49:30,536 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-07 00:49:30,536 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-07 00:49:30,536 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-07 00:49:30,536 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-07 00:49:30,536 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-07 00:49:30,536 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-07 00:49:30,539 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-07 00:49:30,539 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-07 00:49:30,539 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-07 00:49:30,539 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-07 00:49:30,539 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-07 00:49:30,539 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-07 00:49:30,539 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-07 00:49:30,539 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-07 00:49:30,539 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-07 00:49:30,539 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-04-07 00:49:30,539 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-07 00:49:30,747 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-07 00:49:30,770 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-07 00:49:30,772 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-07 00:49:30,772 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-07 00:49:30,773 INFO L275 PluginConnector]: CDTParser initialized [2022-04-07 00:49:30,774 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/openssl-simplified/s3_srvr_1.cil-1.c [2022-04-07 00:49:30,832 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0bdb06b1/e52e98f83df445bab49fff00befc2bd6/FLAG796ec7fed [2022-04-07 00:49:31,202 INFO L306 CDTParser]: Found 1 translation units. [2022-04-07 00:49:31,214 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/openssl-simplified/s3_srvr_1.cil-1.c [2022-04-07 00:49:31,226 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0bdb06b1/e52e98f83df445bab49fff00befc2bd6/FLAG796ec7fed [2022-04-07 00:49:31,237 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0bdb06b1/e52e98f83df445bab49fff00befc2bd6 [2022-04-07 00:49:31,240 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-07 00:49:31,241 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-07 00:49:31,243 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-07 00:49:31,243 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-07 00:49:31,246 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-07 00:49:31,246 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.04 12:49:31" (1/1) ... [2022-04-07 00:49:31,247 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@84d854b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 12:49:31, skipping insertion in model container [2022-04-07 00:49:31,247 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.04 12:49:31" (1/1) ... [2022-04-07 00:49:31,252 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-07 00:49:31,287 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-07 00:49:31,443 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-simplified/s3_srvr_1.cil-1.c[43309,43322] [2022-04-07 00:49:31,450 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-07 00:49:31,455 INFO L203 MainTranslator]: Completed pre-run [2022-04-07 00:49:31,491 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-simplified/s3_srvr_1.cil-1.c[43309,43322] [2022-04-07 00:49:31,493 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-07 00:49:31,502 INFO L208 MainTranslator]: Completed translation [2022-04-07 00:49:31,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 12:49:31 WrapperNode [2022-04-07 00:49:31,502 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-07 00:49:31,503 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-07 00:49:31,503 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-07 00:49:31,503 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-07 00:49:31,511 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 12:49:31" (1/1) ... [2022-04-07 00:49:31,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 12:49:31" (1/1) ... [2022-04-07 00:49:31,517 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 12:49:31" (1/1) ... [2022-04-07 00:49:31,517 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 12:49:31" (1/1) ... [2022-04-07 00:49:31,524 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 12:49:31" (1/1) ... [2022-04-07 00:49:31,536 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 12:49:31" (1/1) ... [2022-04-07 00:49:31,538 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 12:49:31" (1/1) ... [2022-04-07 00:49:31,540 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-07 00:49:31,541 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-07 00:49:31,541 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-07 00:49:31,541 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-07 00:49:31,545 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 12:49:31" (1/1) ... [2022-04-07 00:49:31,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-07 00:49:31,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 00:49:31,589 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) [2022-04-07 00:49:31,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-07 00:49:31,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-07 00:49:31,619 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-07 00:49:31,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2022-04-07 00:49:31,619 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-07 00:49:31,619 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-07 00:49:31,619 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-07 00:49:31,619 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-07 00:49:31,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-07 00:49:31,611 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 [2022-04-07 00:49:31,620 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-04-07 00:49:31,620 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-07 00:49:31,621 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-04-07 00:49:31,621 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2022-04-07 00:49:31,621 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-07 00:49:31,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-07 00:49:31,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-07 00:49:31,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-07 00:49:31,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-07 00:49:31,623 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-07 00:49:31,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-07 00:49:31,700 INFO L234 CfgBuilder]: Building ICFG [2022-04-07 00:49:31,701 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-07 00:49:31,771 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:49:32,044 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2022-04-07 00:49:32,044 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2022-04-07 00:49:32,049 INFO L275 CfgBuilder]: Performing block encoding [2022-04-07 00:49:32,058 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-07 00:49:32,059 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-07 00:49:32,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.04 12:49:32 BoogieIcfgContainer [2022-04-07 00:49:32,061 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-07 00:49:32,063 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-07 00:49:32,063 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-07 00:49:32,065 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-07 00:49:32,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.04 12:49:31" (1/3) ... [2022-04-07 00:49:32,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ef35a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.04 12:49:32, skipping insertion in model container [2022-04-07 00:49:32,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 12:49:31" (2/3) ... [2022-04-07 00:49:32,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ef35a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.04 12:49:32, skipping insertion in model container [2022-04-07 00:49:32,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.04 12:49:32" (3/3) ... [2022-04-07 00:49:32,067 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_1.cil-1.c [2022-04-07 00:49:32,074 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-07 00:49:32,074 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-07 00:49:32,113 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-07 00:49:32,119 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 [2022-04-07 00:49:32,119 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-07 00:49:32,134 INFO L276 IsEmpty]: Start isEmpty. Operand has 152 states, 144 states have (on average 1.7013888888888888) internal successors, (245), 145 states have internal predecessors, (245), 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) [2022-04-07 00:49:32,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-04-07 00:49:32,150 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:49:32,151 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:49:32,151 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:49:32,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:49:32,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1979865033, now seen corresponding path program 1 times [2022-04-07 00:49:32,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:49:32,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [965814530] [2022-04-07 00:49:32,167 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:49:32,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1979865033, now seen corresponding path program 2 times [2022-04-07 00:49:32,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:49:32,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896099168] [2022-04-07 00:49:32,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:49:32,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:49:32,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:49:32,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:49:32,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:49:32,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:49:32,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:49:32,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896099168] [2022-04-07 00:49:32,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896099168] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:49:32,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:49:32,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-07 00:49:32,397 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:49:32,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [965814530] [2022-04-07 00:49:32,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [965814530] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:49:32,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:49:32,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-07 00:49:32,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710164497] [2022-04-07 00:49:32,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:49:32,401 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-07 00:49:32,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:49:32,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-07 00:49:32,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-07 00:49:32,432 INFO L87 Difference]: Start difference. First operand has 152 states, 144 states have (on average 1.7013888888888888) internal successors, (245), 145 states have internal predecessors, (245), 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 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-07 00:49:32,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:49:32,778 INFO L93 Difference]: Finished difference Result 420 states and 707 transitions. [2022-04-07 00:49:32,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-07 00:49:32,780 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 51 [2022-04-07 00:49:32,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:49:32,792 INFO L225 Difference]: With dead ends: 420 [2022-04-07 00:49:32,792 INFO L226 Difference]: Without dead ends: 255 [2022-04-07 00:49:32,796 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-07 00:49:32,799 INFO L913 BasicCegarLoop]: 241 mSDtfsCounter, 637 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 639 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-07 00:49:32,800 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [639 Valid, 250 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-07 00:49:32,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2022-04-07 00:49:32,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2022-04-07 00:49:32,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 250 states have (on average 1.52) internal successors, (380), 250 states have internal predecessors, (380), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-07 00:49:32,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 384 transitions. [2022-04-07 00:49:32,863 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 384 transitions. Word has length 51 [2022-04-07 00:49:32,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:49:32,863 INFO L478 AbstractCegarLoop]: Abstraction has 255 states and 384 transitions. [2022-04-07 00:49:32,864 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-07 00:49:32,864 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 384 transitions. [2022-04-07 00:49:32,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-04-07 00:49:32,872 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:49:32,872 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:49:32,872 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-07 00:49:32,873 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:49:32,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:49:32,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1218319566, now seen corresponding path program 1 times [2022-04-07 00:49:32,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:49:32,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [62446032] [2022-04-07 00:49:32,892 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Cannot deal with arrays. [2022-04-07 00:49:32,892 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 00:49:32,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1218319566, now seen corresponding path program 2 times [2022-04-07 00:49:32,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:49:32,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103622737] [2022-04-07 00:49:32,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:49:32,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:49:32,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:49:32,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:49:32,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:49:32,997 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:49:32,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:49:32,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103622737] [2022-04-07 00:49:32,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103622737] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:49:32,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:49:32,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-07 00:49:32,998 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:49:32,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [62446032] [2022-04-07 00:49:32,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [62446032] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:49:32,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:49:32,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-07 00:49:32,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760714413] [2022-04-07 00:49:32,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:49:32,999 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-07 00:49:32,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:49:33,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-07 00:49:33,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-07 00:49:33,000 INFO L87 Difference]: Start difference. First operand 255 states and 384 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-07 00:49:33,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:49:33,222 INFO L93 Difference]: Finished difference Result 406 states and 620 transitions. [2022-04-07 00:49:33,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-07 00:49:33,223 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 67 [2022-04-07 00:49:33,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:49:33,228 INFO L225 Difference]: With dead ends: 406 [2022-04-07 00:49:33,229 INFO L226 Difference]: Without dead ends: 284 [2022-04-07 00:49:33,235 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-07 00:49:33,237 INFO L913 BasicCegarLoop]: 216 mSDtfsCounter, 218 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-07 00:49:33,237 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 223 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-07 00:49:33,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-04-07 00:49:33,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 276. [2022-04-07 00:49:33,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 271 states have (on average 1.4981549815498154) internal successors, (406), 271 states have internal predecessors, (406), 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) [2022-04-07 00:49:33,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 410 transitions. [2022-04-07 00:49:33,268 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 410 transitions. Word has length 67 [2022-04-07 00:49:33,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:49:33,268 INFO L478 AbstractCegarLoop]: Abstraction has 276 states and 410 transitions. [2022-04-07 00:49:33,268 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-07 00:49:33,268 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 410 transitions. [2022-04-07 00:49:33,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-04-07 00:49:33,270 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:49:33,270 INFO L499 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:49:33,270 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-07 00:49:33,270 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:49:33,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:49:33,271 INFO L85 PathProgramCache]: Analyzing trace with hash 2142422128, now seen corresponding path program 1 times [2022-04-07 00:49:33,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:49:33,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [733157977] [2022-04-07 00:49:33,282 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Cannot deal with arrays. [2022-04-07 00:49:33,282 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 00:49:33,282 INFO L85 PathProgramCache]: Analyzing trace with hash 2142422128, now seen corresponding path program 2 times [2022-04-07 00:49:33,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:49:33,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599733473] [2022-04-07 00:49:33,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:49:33,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:49:33,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:49:33,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:49:33,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:49:33,371 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-04-07 00:49:33,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:49:33,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599733473] [2022-04-07 00:49:33,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599733473] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:49:33,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:49:33,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-07 00:49:33,372 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:49:33,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [733157977] [2022-04-07 00:49:33,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [733157977] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:49:33,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:49:33,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-07 00:49:33,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053511611] [2022-04-07 00:49:33,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:49:33,373 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-07 00:49:33,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:49:33,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-07 00:49:33,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-07 00:49:33,374 INFO L87 Difference]: Start difference. First operand 276 states and 410 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-07 00:49:33,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:49:33,605 INFO L93 Difference]: Finished difference Result 594 states and 898 transitions. [2022-04-07 00:49:33,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-07 00:49:33,606 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 1 states have call successors, (3), 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 88 [2022-04-07 00:49:33,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:49:33,608 INFO L225 Difference]: With dead ends: 594 [2022-04-07 00:49:33,608 INFO L226 Difference]: Without dead ends: 332 [2022-04-07 00:49:33,610 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-07 00:49:33,611 INFO L913 BasicCegarLoop]: 216 mSDtfsCounter, 218 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-07 00:49:33,615 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 223 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-07 00:49:33,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2022-04-07 00:49:33,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 324. [2022-04-07 00:49:33,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 319 states have (on average 1.4545454545454546) internal successors, (464), 319 states have internal predecessors, (464), 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) [2022-04-07 00:49:33,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 468 transitions. [2022-04-07 00:49:33,635 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 468 transitions. Word has length 88 [2022-04-07 00:49:33,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:49:33,636 INFO L478 AbstractCegarLoop]: Abstraction has 324 states and 468 transitions. [2022-04-07 00:49:33,637 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-07 00:49:33,637 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 468 transitions. [2022-04-07 00:49:33,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-04-07 00:49:33,638 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:49:33,638 INFO L499 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:49:33,639 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-07 00:49:33,640 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:49:33,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:49:33,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1255151890, now seen corresponding path program 1 times [2022-04-07 00:49:33,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:49:33,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1463012682] [2022-04-07 00:49:33,649 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Cannot deal with arrays. [2022-04-07 00:49:33,650 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 00:49:33,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1255151890, now seen corresponding path program 2 times [2022-04-07 00:49:33,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:49:33,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158893082] [2022-04-07 00:49:33,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:49:33,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:49:33,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:49:33,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:49:33,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:49:33,727 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-04-07 00:49:33,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:49:33,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158893082] [2022-04-07 00:49:33,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158893082] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:49:33,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:49:33,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-07 00:49:33,728 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:49:33,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1463012682] [2022-04-07 00:49:33,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1463012682] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:49:33,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:49:33,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-07 00:49:33,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146708614] [2022-04-07 00:49:33,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:49:33,729 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-07 00:49:33,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:49:33,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-07 00:49:33,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-07 00:49:33,730 INFO L87 Difference]: Start difference. First operand 324 states and 468 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-07 00:49:34,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:49:34,000 INFO L93 Difference]: Finished difference Result 724 states and 1081 transitions. [2022-04-07 00:49:34,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-07 00:49:34,000 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 1 states have call successors, (3), 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 88 [2022-04-07 00:49:34,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:49:34,003 INFO L225 Difference]: With dead ends: 724 [2022-04-07 00:49:34,003 INFO L226 Difference]: Without dead ends: 414 [2022-04-07 00:49:34,004 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-07 00:49:34,005 INFO L913 BasicCegarLoop]: 218 mSDtfsCounter, 218 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-07 00:49:34,006 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 225 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-07 00:49:34,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2022-04-07 00:49:34,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 406. [2022-04-07 00:49:34,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 401 states have (on average 1.3865336658354115) internal successors, (556), 401 states have internal predecessors, (556), 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) [2022-04-07 00:49:34,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 560 transitions. [2022-04-07 00:49:34,021 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 560 transitions. Word has length 88 [2022-04-07 00:49:34,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:49:34,022 INFO L478 AbstractCegarLoop]: Abstraction has 406 states and 560 transitions. [2022-04-07 00:49:34,022 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-07 00:49:34,022 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 560 transitions. [2022-04-07 00:49:34,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-04-07 00:49:34,029 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:49:34,029 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:49:34,030 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-07 00:49:34,030 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:49:34,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:49:34,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1056913504, now seen corresponding path program 1 times [2022-04-07 00:49:34,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:49:34,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [104249153] [2022-04-07 00:49:34,036 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Cannot deal with arrays. [2022-04-07 00:49:34,036 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 00:49:34,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1056913504, now seen corresponding path program 2 times [2022-04-07 00:49:34,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:49:34,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929097917] [2022-04-07 00:49:34,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:49:34,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:49:34,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:49:34,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:49:34,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:49:34,117 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-04-07 00:49:34,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:49:34,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929097917] [2022-04-07 00:49:34,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929097917] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:49:34,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:49:34,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-07 00:49:34,118 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:49:34,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [104249153] [2022-04-07 00:49:34,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [104249153] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:49:34,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:49:34,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-07 00:49:34,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123837842] [2022-04-07 00:49:34,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:49:34,119 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-07 00:49:34,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:49:34,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-07 00:49:34,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-07 00:49:34,120 INFO L87 Difference]: Start difference. First operand 406 states and 560 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-07 00:49:34,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:49:34,320 INFO L93 Difference]: Finished difference Result 874 states and 1236 transitions. [2022-04-07 00:49:34,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-07 00:49:34,321 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 109 [2022-04-07 00:49:34,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:49:34,323 INFO L225 Difference]: With dead ends: 874 [2022-04-07 00:49:34,323 INFO L226 Difference]: Without dead ends: 482 [2022-04-07 00:49:34,324 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-07 00:49:34,325 INFO L913 BasicCegarLoop]: 216 mSDtfsCounter, 249 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-07 00:49:34,325 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [249 Valid, 223 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-07 00:49:34,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2022-04-07 00:49:34,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 456. [2022-04-07 00:49:34,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 451 states have (on average 1.3658536585365855) internal successors, (616), 451 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) [2022-04-07 00:49:34,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 620 transitions. [2022-04-07 00:49:34,345 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 620 transitions. Word has length 109 [2022-04-07 00:49:34,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:49:34,346 INFO L478 AbstractCegarLoop]: Abstraction has 456 states and 620 transitions. [2022-04-07 00:49:34,346 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-07 00:49:34,346 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 620 transitions. [2022-04-07 00:49:34,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-04-07 00:49:34,349 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:49:34,349 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-04-07 00:49:34,349 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-07 00:49:34,349 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:49:34,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:49:34,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1703407444, now seen corresponding path program 1 times [2022-04-07 00:49:34,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:49:34,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1441038195] [2022-04-07 00:49:34,355 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Cannot deal with arrays. [2022-04-07 00:49:34,356 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 00:49:34,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1703407444, now seen corresponding path program 2 times [2022-04-07 00:49:34,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:49:34,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424997842] [2022-04-07 00:49:34,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:49:34,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:49:34,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-07 00:49:34,380 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-07 00:49:34,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-07 00:49:34,449 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-07 00:49:34,449 INFO L130 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found a feasible trace [2022-04-07 00:49:34,449 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-07 00:49:34,456 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-07 00:49:34,457 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-04-07 00:49:34,461 INFO L719 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 2, 2] [2022-04-07 00:49:34,464 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-07 00:49:34,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.04 12:49:34 BoogieIcfgContainer [2022-04-07 00:49:34,490 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-07 00:49:34,490 INFO L158 Benchmark]: Toolchain (without parser) took 3248.83ms. Allocated memory was 178.3MB in the beginning and 219.2MB in the end (delta: 40.9MB). Free memory was 127.4MB in the beginning and 93.7MB in the end (delta: 33.7MB). Peak memory consumption was 73.9MB. Max. memory is 8.0GB. [2022-04-07 00:49:34,490 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 178.3MB. Free memory is still 144.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-07 00:49:34,490 INFO L158 Benchmark]: CACSL2BoogieTranslator took 259.32ms. Allocated memory is still 178.3MB. Free memory was 127.1MB in the beginning and 150.4MB in the end (delta: -23.4MB). Peak memory consumption was 11.9MB. Max. memory is 8.0GB. [2022-04-07 00:49:34,491 INFO L158 Benchmark]: Boogie Preprocessor took 37.57ms. Allocated memory is still 178.3MB. Free memory was 150.4MB in the beginning and 147.8MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-04-07 00:49:34,491 INFO L158 Benchmark]: RCFGBuilder took 519.99ms. Allocated memory is still 178.3MB. Free memory was 147.8MB in the beginning and 120.5MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB. [2022-04-07 00:49:34,491 INFO L158 Benchmark]: TraceAbstraction took 2426.64ms. Allocated memory was 178.3MB in the beginning and 219.2MB in the end (delta: 40.9MB). Free memory was 120.0MB in the beginning and 93.7MB in the end (delta: 26.3MB). Peak memory consumption was 68.3MB. Max. memory is 8.0GB. [2022-04-07 00:49:34,492 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 178.3MB. Free memory is still 144.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 259.32ms. Allocated memory is still 178.3MB. Free memory was 127.1MB in the beginning and 150.4MB in the end (delta: -23.4MB). Peak memory consumption was 11.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 37.57ms. Allocated memory is still 178.3MB. Free memory was 150.4MB in the beginning and 147.8MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 519.99ms. Allocated memory is still 178.3MB. Free memory was 147.8MB in the beginning and 120.5MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB. * TraceAbstraction took 2426.64ms. Allocated memory was 178.3MB in the beginning and 219.2MB in the end (delta: 40.9MB). Free memory was 120.0MB in the beginning and 93.7MB in the end (delta: 26.3MB). Peak memory consumption was 68.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 623]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L628] int s ; [L629] int tmp ; [L633] s = 8464 [L634] CALL ssl3_accept(s) [L23] int s__info_callback = __VERIFIER_nondet_int() ; [L24] int s__in_handshake = __VERIFIER_nondet_int() ; [L25] int s__state ; [L26] int s__new_session ; [L27] int s__server ; [L28] int s__version = __VERIFIER_nondet_int() ; [L29] int s__type ; [L30] int s__init_num ; [L31] int s__hit = __VERIFIER_nondet_int() ; [L32] int s__rwstate ; [L33] int s__init_buf___0 = 1; [L34] int s__debug = __VERIFIER_nondet_int() ; [L35] int s__shutdown ; [L36] int s__cert = __VERIFIER_nondet_int() ; [L37] int s__options = __VERIFIER_nondet_int() ; [L38] int s__verify_mode = __VERIFIER_nondet_int() ; [L39] int s__session__peer = __VERIFIER_nondet_int() ; [L40] int s__cert__pkeys__AT0__privatekey = __VERIFIER_nondet_int() ; [L41] int s__ctx__info_callback = __VERIFIER_nondet_int() ; [L42] int s__ctx__stats__sess_accept_renegotiate = __VERIFIER_nondet_int() ; [L43] int s__ctx__stats__sess_accept = __VERIFIER_nondet_int() ; [L44] int s__ctx__stats__sess_accept_good = __VERIFIER_nondet_int() ; [L45] int s__s3__tmp__cert_request ; [L46] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int() ; [L47] int s__s3__tmp__use_rsa_tmp ; [L48] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int() ; [L49] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() ; [L50] int s__s3__tmp__next_state___0 ; [L51] int s__s3__tmp__new_cipher__algo_strength = __VERIFIER_nondet_int() ; [L52] int s__session__cipher ; [L53] int buf = __VERIFIER_nondet_int() ; [L54] unsigned long l ; [L55] unsigned long Time ; [L56] unsigned long tmp = __VERIFIER_nondet_long() ; [L57] int cb ; [L58] long num1 ; [L59] int ret ; [L60] int new_state ; [L61] int state ; [L62] int skip ; [L63] int got_new_session ; [L64] int tmp___1 = __VERIFIER_nondet_int() ; [L65] int tmp___2 = __VERIFIER_nondet_int() ; [L66] int tmp___3 ; [L67] int tmp___4 ; [L68] int tmp___5 ; [L69] int tmp___6 ; [L70] int tmp___7 ; [L71] long tmp___8 = __VERIFIER_nondet_long() ; [L72] int tmp___9 ; [L73] int tmp___10 ; [L74] int blastFlag ; [L75] int __cil_tmp55 ; [L76] unsigned long __cil_tmp56 ; [L77] unsigned long __cil_tmp57 ; [L78] unsigned long __cil_tmp58 ; [L79] unsigned long __cil_tmp59 ; [L80] int __cil_tmp60 ; [L81] unsigned long __cil_tmp61 ; [L85] s__state = initial_state [L86] blastFlag = 0 [L87] Time = tmp [L88] cb = 0 [L89] ret = -1 [L90] skip = 0 [L91] got_new_session = 0 [L92] COND TRUE s__info_callback != 0 [L93] cb = s__info_callback [L99] s__in_handshake ++ [L100] COND FALSE !(tmp___1 + 12288) [L105] COND FALSE !(s__cert == 0) [L109] COND TRUE 1 [L111] state = s__state [L112] COND FALSE !(s__state == 12292) [L115] COND FALSE !(s__state == 16384) [L118] COND FALSE !(s__state == 8192) [L121] COND FALSE !(s__state == 24576) [L124] COND FALSE !(s__state == 8195) [L127] COND FALSE !(s__state == 8480) [L130] COND FALSE !(s__state == 8481) [L133] COND FALSE !(s__state == 8482) [L136] COND TRUE s__state == 8464 [L280] s__shutdown = 0 [L281] ret = __VERIFIER_nondet_int() [L282] COND TRUE blastFlag == 0 [L283] blastFlag = 1 [L285] COND FALSE !(ret <= 0) [L288] got_new_session = 1 [L289] s__state = 8496 [L290] s__init_num = 0 [L595] COND FALSE !(! s__s3__tmp__reuse_message) [L612] skip = 0 [L109] COND TRUE 1 [L111] state = s__state [L112] COND FALSE !(s__state == 12292) [L115] COND FALSE !(s__state == 16384) [L118] COND FALSE !(s__state == 8192) [L121] COND FALSE !(s__state == 24576) [L124] COND FALSE !(s__state == 8195) [L127] COND FALSE !(s__state == 8480) [L130] COND FALSE !(s__state == 8481) [L133] COND FALSE !(s__state == 8482) [L136] COND FALSE !(s__state == 8464) [L139] COND FALSE !(s__state == 8465) [L142] COND FALSE !(s__state == 8466) [L145] COND TRUE s__state == 8496 [L294] ret = __VERIFIER_nondet_int() [L295] COND TRUE blastFlag == 1 [L296] blastFlag = 2 [L298] COND FALSE !(ret <= 0) [L301] COND TRUE \read(s__hit) [L302] s__state = 8656 [L306] s__init_num = 0 [L595] COND FALSE !(! s__s3__tmp__reuse_message) [L612] skip = 0 [L109] COND TRUE 1 [L111] state = s__state [L112] COND FALSE !(s__state == 12292) [L115] COND FALSE !(s__state == 16384) [L118] COND FALSE !(s__state == 8192) [L121] COND FALSE !(s__state == 24576) [L124] COND FALSE !(s__state == 8195) [L127] COND FALSE !(s__state == 8480) [L130] COND FALSE !(s__state == 8481) [L133] COND FALSE !(s__state == 8482) [L136] COND FALSE !(s__state == 8464) [L139] COND FALSE !(s__state == 8465) [L142] COND FALSE !(s__state == 8466) [L145] COND FALSE !(s__state == 8496) [L148] COND FALSE !(s__state == 8497) [L151] COND FALSE !(s__state == 8512) [L154] COND FALSE !(s__state == 8513) [L157] COND FALSE !(s__state == 8528) [L160] COND FALSE !(s__state == 8529) [L163] COND FALSE !(s__state == 8544) [L166] COND FALSE !(s__state == 8545) [L169] COND FALSE !(s__state == 8560) [L172] COND FALSE !(s__state == 8561) [L175] COND FALSE !(s__state == 8448) [L178] COND FALSE !(s__state == 8576) [L181] COND FALSE !(s__state == 8577) [L184] COND FALSE !(s__state == 8592) [L187] COND FALSE !(s__state == 8593) [L190] COND FALSE !(s__state == 8608) [L193] COND FALSE !(s__state == 8609) [L196] COND FALSE !(s__state == 8640) [L199] COND FALSE !(s__state == 8641) [L202] COND TRUE s__state == 8656 [L500] s__session__cipher = s__s3__tmp__new_cipher [L501] tmp___9 = __VERIFIER_nondet_int() [L502] COND FALSE !(! tmp___9) [L506] ret = __VERIFIER_nondet_int() [L507] COND TRUE blastFlag == 2 [L508] blastFlag = 3 [L510] COND FALSE !(ret <= 0) [L513] s__state = 8672 [L514] s__init_num = 0 [L515] tmp___10 = __VERIFIER_nondet_int() [L516] COND FALSE !(! tmp___10) [L595] COND FALSE !(! s__s3__tmp__reuse_message) [L612] skip = 0 [L109] COND TRUE 1 [L111] state = s__state [L112] COND FALSE !(s__state == 12292) [L115] COND FALSE !(s__state == 16384) [L118] COND FALSE !(s__state == 8192) [L121] COND FALSE !(s__state == 24576) [L124] COND FALSE !(s__state == 8195) [L127] COND FALSE !(s__state == 8480) [L130] COND FALSE !(s__state == 8481) [L133] COND FALSE !(s__state == 8482) [L136] COND FALSE !(s__state == 8464) [L139] COND FALSE !(s__state == 8465) [L142] COND FALSE !(s__state == 8466) [L145] COND FALSE !(s__state == 8496) [L148] COND FALSE !(s__state == 8497) [L151] COND FALSE !(s__state == 8512) [L154] COND FALSE !(s__state == 8513) [L157] COND FALSE !(s__state == 8528) [L160] COND FALSE !(s__state == 8529) [L163] COND FALSE !(s__state == 8544) [L166] COND FALSE !(s__state == 8545) [L169] COND FALSE !(s__state == 8560) [L172] COND FALSE !(s__state == 8561) [L175] COND FALSE !(s__state == 8448) [L178] COND FALSE !(s__state == 8576) [L181] COND FALSE !(s__state == 8577) [L184] COND FALSE !(s__state == 8592) [L187] COND FALSE !(s__state == 8593) [L190] COND FALSE !(s__state == 8608) [L193] COND FALSE !(s__state == 8609) [L196] COND FALSE !(s__state == 8640) [L199] COND FALSE !(s__state == 8641) [L202] COND FALSE !(s__state == 8656) [L205] COND FALSE !(s__state == 8657) [L208] COND TRUE s__state == 8672 [L523] ret = __VERIFIER_nondet_int() [L524] COND FALSE !(blastFlag == 4) [L527] COND TRUE blastFlag == 3 [L623] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 155 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.3s, OverallIterations: 6, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1542 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1540 mSDsluCounter, 1144 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 37 mSDsCounter, 94 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1119 IncrementalHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 94 mSolverCounterUnsat, 1107 mSDtfsCounter, 1119 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=456occurred in iteration=5, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 50 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-04-07 00:49:34,518 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...