/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/openssl-simplified/s3_srvr_13.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-06 18:51:53,425 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-06 18:51:53,427 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-06 18:51:53,446 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-06 18:51:53,452 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-06 18:51:53,452 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-06 18:51:53,453 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-06 18:51:53,453 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-06 18:51:53,454 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-06 18:51:53,454 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-06 18:51:53,455 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-06 18:51:53,456 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-06 18:51:53,457 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-06 18:51:53,458 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-06 18:51:53,458 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-06 18:51:53,459 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-06 18:51:53,459 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-06 18:51:53,461 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-06 18:51:53,465 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-06 18:51:53,466 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-06 18:51:53,466 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-06 18:51:53,467 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-04-06 18:51:53,472 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-06 18:51:53,473 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-06 18:51:53,473 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-06 18:51:53,474 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-06 18:51:53,474 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-06 18:51:53,474 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-06 18:51:53,474 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-06 18:51:53,474 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-06 18:51:53,474 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-06 18:51:53,474 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-06 18:51:53,475 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-06 18:51:53,475 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-06 18:51:53,475 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-06 18:51:53,475 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-06 18:51:53,475 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-06 18:51:53,475 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-06 18:51:53,475 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-06 18:51:53,476 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-06 18:51:53,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 18:51:53,476 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-06 18:51:53,476 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-06 18:51:53,476 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-06 18:51:53,476 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-06 18:51:53,476 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-06 18:51:53,476 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-04-06 18:51:53,477 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-06 18:51:53,647 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-06 18:51:53,665 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-06 18:51:53,666 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-06 18:51:53,667 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-06 18:51:53,669 INFO L275 PluginConnector]: CDTParser initialized [2022-04-06 18:51:53,669 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/openssl-simplified/s3_srvr_13.cil.c [2022-04-06 18:51:53,722 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5318c7645/28a7b3b51c5243c3b86269b381e6a552/FLAGa52eb5e3f [2022-04-06 18:51:54,036 INFO L306 CDTParser]: Found 1 translation units. [2022-04-06 18:51:54,037 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/openssl-simplified/s3_srvr_13.cil.c [2022-04-06 18:51:54,049 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5318c7645/28a7b3b51c5243c3b86269b381e6a552/FLAGa52eb5e3f [2022-04-06 18:51:54,448 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5318c7645/28a7b3b51c5243c3b86269b381e6a552 [2022-04-06 18:51:54,450 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-06 18:51:54,451 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-06 18:51:54,453 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-06 18:51:54,453 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-06 18:51:54,456 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-06 18:51:54,456 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 06:51:54" (1/1) ... [2022-04-06 18:51:54,457 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64239f2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:51:54, skipping insertion in model container [2022-04-06 18:51:54,457 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 06:51:54" (1/1) ... [2022-04-06 18:51:54,461 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-06 18:51:54,490 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-06 18:51:54,692 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_13.cil.c[45032,45045] [2022-04-06 18:51:54,702 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 18:51:54,708 INFO L203 MainTranslator]: Completed pre-run [2022-04-06 18:51:54,760 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_13.cil.c[45032,45045] [2022-04-06 18:51:54,762 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 18:51:54,770 INFO L208 MainTranslator]: Completed translation [2022-04-06 18:51:54,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:51:54 WrapperNode [2022-04-06 18:51:54,771 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-06 18:51:54,771 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-06 18:51:54,771 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-06 18:51:54,771 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-06 18:51:54,779 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:51:54" (1/1) ... [2022-04-06 18:51:54,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:51:54" (1/1) ... [2022-04-06 18:51:54,801 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:51:54" (1/1) ... [2022-04-06 18:51:54,802 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:51:54" (1/1) ... [2022-04-06 18:51:54,820 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:51:54" (1/1) ... [2022-04-06 18:51:54,826 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:51:54" (1/1) ... [2022-04-06 18:51:54,827 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:51:54" (1/1) ... [2022-04-06 18:51:54,829 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-06 18:51:54,830 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-06 18:51:54,830 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-06 18:51:54,830 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-06 18:51:54,840 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:51:54" (1/1) ... [2022-04-06 18:51:54,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 18:51:54,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 18:51:54,869 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) [2022-04-06 18:51:54,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-06 18:51:54,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-06 18:51:54,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-06 18:51:54,898 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-06 18:51:54,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2022-04-06 18:51:54,899 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-06 18:51:54,899 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-06 18:51:54,899 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-06 18:51:54,899 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-06 18:51:54,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-06 18:51:54,899 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-04-06 18:51:54,900 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-06 18:51:54,900 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-04-06 18:51:54,901 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2022-04-06 18:51:54,901 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-06 18:51:54,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-06 18:51:54,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-06 18:51:54,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-06 18:51:54,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-06 18:51:54,901 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-06 18:51:54,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-06 18:51:55,009 INFO L234 CfgBuilder]: Building ICFG [2022-04-06 18:51:55,010 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-06 18:51:55,086 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 18:51:55,373 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2022-04-06 18:51:55,373 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2022-04-06 18:51:55,383 INFO L275 CfgBuilder]: Performing block encoding [2022-04-06 18:51:55,388 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-06 18:51:55,388 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-06 18:51:55,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 06:51:55 BoogieIcfgContainer [2022-04-06 18:51:55,390 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-06 18:51:55,391 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-06 18:51:55,391 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-06 18:51:55,393 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-06 18:51:55,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.04 06:51:54" (1/3) ... [2022-04-06 18:51:55,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28bbfe50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 06:51:55, skipping insertion in model container [2022-04-06 18:51:55,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:51:54" (2/3) ... [2022-04-06 18:51:55,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28bbfe50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 06:51:55, skipping insertion in model container [2022-04-06 18:51:55,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 06:51:55" (3/3) ... [2022-04-06 18:51:55,395 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_13.cil.c [2022-04-06 18:51:55,398 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-06 18:51:55,398 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-06 18:51:55,427 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-06 18:51:55,431 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 [2022-04-06 18:51:55,431 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-06 18:51:55,442 INFO L276 IsEmpty]: Start isEmpty. Operand has 162 states, 154 states have (on average 1.7272727272727273) internal successors, (266), 155 states have internal predecessors, (266), 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) [2022-04-06 18:51:55,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-04-06 18:51:55,448 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 18:51:55,449 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] [2022-04-06 18:51:55,449 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 18:51:55,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 18:51:55,452 INFO L85 PathProgramCache]: Analyzing trace with hash -963493744, now seen corresponding path program 1 times [2022-04-06 18:51:55,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 18:51:55,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1227722122] [2022-04-06 18:51:55,464 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 18:51:55,464 INFO L85 PathProgramCache]: Analyzing trace with hash -963493744, now seen corresponding path program 2 times [2022-04-06 18:51:55,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 18:51:55,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152847694] [2022-04-06 18:51:55,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 18:51:55,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 18:51:55,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:51:55,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 18:51:55,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:51:55,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 18:51:55,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 18:51:55,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152847694] [2022-04-06 18:51:55,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152847694] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:51:55,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:51:55,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-06 18:51:55,688 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 18:51:55,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1227722122] [2022-04-06 18:51:55,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1227722122] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:51:55,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:51:55,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-06 18:51:55,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380511345] [2022-04-06 18:51:55,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 18:51:55,693 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-06 18:51:55,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 18:51:55,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-06 18:51:55,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-06 18:51:55,720 INFO L87 Difference]: Start difference. First operand has 162 states, 154 states have (on average 1.7272727272727273) internal successors, (266), 155 states have internal predecessors, (266), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:51:56,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 18:51:56,230 INFO L93 Difference]: Finished difference Result 364 states and 611 transitions. [2022-04-06 18:51:56,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-06 18:51:56,233 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (3), 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 32 [2022-04-06 18:51:56,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 18:51:56,240 INFO L225 Difference]: With dead ends: 364 [2022-04-06 18:51:56,240 INFO L226 Difference]: Without dead ends: 185 [2022-04-06 18:51:56,242 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-04-06 18:51:56,244 INFO L913 BasicCegarLoop]: 231 mSDtfsCounter, 542 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-06 18:51:56,245 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [543 Valid, 246 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-06 18:51:56,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-04-06 18:51:56,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 162. [2022-04-06 18:51:56,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 157 states have (on average 1.5414012738853504) internal successors, (242), 157 states have internal predecessors, (242), 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) [2022-04-06 18:51:56,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 246 transitions. [2022-04-06 18:51:56,290 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 246 transitions. Word has length 32 [2022-04-06 18:51:56,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 18:51:56,290 INFO L478 AbstractCegarLoop]: Abstraction has 162 states and 246 transitions. [2022-04-06 18:51:56,290 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:51:56,290 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 246 transitions. [2022-04-06 18:51:56,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-04-06 18:51:56,293 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 18:51:56,293 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] [2022-04-06 18:51:56,293 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-06 18:51:56,294 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 18:51:56,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 18:51:56,295 INFO L85 PathProgramCache]: Analyzing trace with hash -76895489, now seen corresponding path program 1 times [2022-04-06 18:51:56,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 18:51:56,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [334170677] [2022-04-06 18:51:56,298 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 18:51:56,298 INFO L85 PathProgramCache]: Analyzing trace with hash -76895489, now seen corresponding path program 2 times [2022-04-06 18:51:56,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 18:51:56,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980404156] [2022-04-06 18:51:56,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 18:51:56,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 18:51:56,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:51:56,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 18:51:56,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:51:56,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 18:51:56,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 18:51:56,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980404156] [2022-04-06 18:51:56,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980404156] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:51:56,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:51:56,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-06 18:51:56,381 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 18:51:56,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [334170677] [2022-04-06 18:51:56,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [334170677] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:51:56,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:51:56,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-06 18:51:56,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609996987] [2022-04-06 18:51:56,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 18:51:56,382 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-06 18:51:56,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 18:51:56,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-06 18:51:56,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-06 18:51:56,383 INFO L87 Difference]: Start difference. First operand 162 states and 246 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:51:56,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 18:51:56,665 INFO L93 Difference]: Finished difference Result 330 states and 501 transitions. [2022-04-06 18:51:56,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-06 18:51:56,668 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (3), 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 33 [2022-04-06 18:51:56,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 18:51:56,677 INFO L225 Difference]: With dead ends: 330 [2022-04-06 18:51:56,678 INFO L226 Difference]: Without dead ends: 182 [2022-04-06 18:51:56,679 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-04-06 18:51:56,680 INFO L913 BasicCegarLoop]: 169 mSDtfsCounter, 424 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 18:51:56,680 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [424 Valid, 181 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 18:51:56,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-04-06 18:51:56,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 152. [2022-04-06 18:51:56,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 147 states have (on average 1.5578231292517006) internal successors, (229), 147 states have internal predecessors, (229), 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) [2022-04-06 18:51:56,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 233 transitions. [2022-04-06 18:51:56,696 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 233 transitions. Word has length 33 [2022-04-06 18:51:56,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 18:51:56,696 INFO L478 AbstractCegarLoop]: Abstraction has 152 states and 233 transitions. [2022-04-06 18:51:56,697 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:51:56,697 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 233 transitions. [2022-04-06 18:51:56,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-04-06 18:51:56,697 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 18:51:56,698 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] [2022-04-06 18:51:56,698 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-06 18:51:56,698 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 18:51:56,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 18:51:56,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1425858867, now seen corresponding path program 1 times [2022-04-06 18:51:56,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 18:51:56,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1751110373] [2022-04-06 18:51:56,699 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 18:51:56,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1425858867, now seen corresponding path program 2 times [2022-04-06 18:51:56,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 18:51:56,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900541605] [2022-04-06 18:51:56,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 18:51:56,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 18:51:56,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:51:56,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 18:51:56,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:51:56,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 18:51:56,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 18:51:56,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900541605] [2022-04-06 18:51:56,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900541605] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:51:56,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:51:56,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 18:51:56,739 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 18:51:56,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1751110373] [2022-04-06 18:51:56,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1751110373] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:51:56,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:51:56,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 18:51:56,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059244819] [2022-04-06 18:51:56,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 18:51:56,740 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 18:51:56,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 18:51:56,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 18:51:56,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 18:51:56,741 INFO L87 Difference]: Start difference. First operand 152 states and 233 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:51:56,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 18:51:56,965 INFO L93 Difference]: Finished difference Result 337 states and 535 transitions. [2022-04-06 18:51:56,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 18:51:56,966 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (3), 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 33 [2022-04-06 18:51:56,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 18:51:56,967 INFO L225 Difference]: With dead ends: 337 [2022-04-06 18:51:56,967 INFO L226 Difference]: Without dead ends: 151 [2022-04-06 18:51:56,967 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 [2022-04-06 18:51:56,968 INFO L913 BasicCegarLoop]: 237 mSDtfsCounter, 269 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 18:51:56,968 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [269 Valid, 244 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 18:51:56,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-04-06 18:51:56,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2022-04-06 18:51:56,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 146 states have (on average 1.547945205479452) internal successors, (226), 146 states have internal predecessors, (226), 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) [2022-04-06 18:51:56,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 230 transitions. [2022-04-06 18:51:56,980 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 230 transitions. Word has length 33 [2022-04-06 18:51:56,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 18:51:56,980 INFO L478 AbstractCegarLoop]: Abstraction has 151 states and 230 transitions. [2022-04-06 18:51:56,980 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:51:56,980 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 230 transitions. [2022-04-06 18:51:56,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-04-06 18:51:56,981 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 18:51:56,981 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] [2022-04-06 18:51:56,981 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-06 18:51:56,981 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 18:51:56,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 18:51:56,981 INFO L85 PathProgramCache]: Analyzing trace with hash -319735020, now seen corresponding path program 1 times [2022-04-06 18:51:56,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 18:51:56,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1534517582] [2022-04-06 18:51:56,982 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 18:51:56,982 INFO L85 PathProgramCache]: Analyzing trace with hash -319735020, now seen corresponding path program 2 times [2022-04-06 18:51:56,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 18:51:56,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230779411] [2022-04-06 18:51:56,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 18:51:56,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 18:51:56,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:51:57,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 18:51:57,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:51:57,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 18:51:57,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 18:51:57,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230779411] [2022-04-06 18:51:57,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230779411] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:51:57,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:51:57,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-06 18:51:57,018 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 18:51:57,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1534517582] [2022-04-06 18:51:57,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1534517582] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:51:57,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:51:57,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-06 18:51:57,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502599807] [2022-04-06 18:51:57,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 18:51:57,019 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-06 18:51:57,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 18:51:57,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-06 18:51:57,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-06 18:51:57,019 INFO L87 Difference]: Start difference. First operand 151 states and 230 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:51:57,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 18:51:57,301 INFO L93 Difference]: Finished difference Result 329 states and 498 transitions. [2022-04-06 18:51:57,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-06 18:51:57,301 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (3), 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 33 [2022-04-06 18:51:57,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 18:51:57,302 INFO L225 Difference]: With dead ends: 329 [2022-04-06 18:51:57,302 INFO L226 Difference]: Without dead ends: 192 [2022-04-06 18:51:57,304 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-04-06 18:51:57,310 INFO L913 BasicCegarLoop]: 176 mSDtfsCounter, 421 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 18:51:57,311 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [421 Valid, 188 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 18:51:57,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-04-06 18:51:57,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 149. [2022-04-06 18:51:57,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 144 states have (on average 1.5555555555555556) internal successors, (224), 144 states have internal predecessors, (224), 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) [2022-04-06 18:51:57,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 228 transitions. [2022-04-06 18:51:57,328 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 228 transitions. Word has length 33 [2022-04-06 18:51:57,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 18:51:57,329 INFO L478 AbstractCegarLoop]: Abstraction has 149 states and 228 transitions. [2022-04-06 18:51:57,329 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:51:57,329 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 228 transitions. [2022-04-06 18:51:57,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-04-06 18:51:57,330 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 18:51:57,330 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] [2022-04-06 18:51:57,330 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-06 18:51:57,330 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 18:51:57,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 18:51:57,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1614356125, now seen corresponding path program 1 times [2022-04-06 18:51:57,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 18:51:57,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [600367308] [2022-04-06 18:51:57,331 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 18:51:57,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1614356125, now seen corresponding path program 2 times [2022-04-06 18:51:57,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 18:51:57,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154076906] [2022-04-06 18:51:57,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 18:51:57,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 18:51:57,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:51:57,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 18:51:57,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:51:57,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 18:51:57,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 18:51:57,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154076906] [2022-04-06 18:51:57,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154076906] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:51:57,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:51:57,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 18:51:57,412 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 18:51:57,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [600367308] [2022-04-06 18:51:57,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [600367308] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:51:57,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:51:57,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 18:51:57,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435081867] [2022-04-06 18:51:57,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 18:51:57,412 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 18:51:57,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 18:51:57,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 18:51:57,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 18:51:57,413 INFO L87 Difference]: Start difference. First operand 149 states and 228 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:51:57,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 18:51:57,600 INFO L93 Difference]: Finished difference Result 418 states and 647 transitions. [2022-04-06 18:51:57,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 18:51:57,600 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (3), 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 39 [2022-04-06 18:51:57,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 18:51:57,601 INFO L225 Difference]: With dead ends: 418 [2022-04-06 18:51:57,601 INFO L226 Difference]: Without dead ends: 283 [2022-04-06 18:51:57,602 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 [2022-04-06 18:51:57,602 INFO L913 BasicCegarLoop]: 212 mSDtfsCounter, 581 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 581 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 18:51:57,603 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [581 Valid, 219 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 18:51:57,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2022-04-06 18:51:57,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 281. [2022-04-06 18:51:57,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 276 states have (on average 1.5289855072463767) internal successors, (422), 276 states have internal predecessors, (422), 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) [2022-04-06 18:51:57,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 426 transitions. [2022-04-06 18:51:57,620 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 426 transitions. Word has length 39 [2022-04-06 18:51:57,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 18:51:57,620 INFO L478 AbstractCegarLoop]: Abstraction has 281 states and 426 transitions. [2022-04-06 18:51:57,620 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:51:57,620 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 426 transitions. [2022-04-06 18:51:57,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-04-06 18:51:57,621 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 18:51:57,621 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] [2022-04-06 18:51:57,621 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-06 18:51:57,621 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 18:51:57,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 18:51:57,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1772802082, now seen corresponding path program 1 times [2022-04-06 18:51:57,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 18:51:57,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [495279229] [2022-04-06 18:51:57,622 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 18:51:57,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1772802082, now seen corresponding path program 2 times [2022-04-06 18:51:57,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 18:51:57,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106536126] [2022-04-06 18:51:57,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 18:51:57,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 18:51:57,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:51:57,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 18:51:57,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:51:57,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 18:51:57,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 18:51:57,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106536126] [2022-04-06 18:51:57,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106536126] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:51:57,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:51:57,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 18:51:57,673 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 18:51:57,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [495279229] [2022-04-06 18:51:57,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [495279229] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:51:57,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:51:57,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 18:51:57,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717608894] [2022-04-06 18:51:57,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 18:51:57,673 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 18:51:57,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 18:51:57,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 18:51:57,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 18:51:57,674 INFO L87 Difference]: Start difference. First operand 281 states and 426 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:51:57,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 18:51:57,906 INFO L93 Difference]: Finished difference Result 662 states and 1032 transitions. [2022-04-06 18:51:57,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 18:51:57,907 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (3), 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 41 [2022-04-06 18:51:57,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 18:51:57,909 INFO L225 Difference]: With dead ends: 662 [2022-04-06 18:51:57,909 INFO L226 Difference]: Without dead ends: 395 [2022-04-06 18:51:57,909 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 [2022-04-06 18:51:57,910 INFO L913 BasicCegarLoop]: 232 mSDtfsCounter, 302 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 18:51:57,910 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 239 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 18:51:57,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2022-04-06 18:51:57,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 367. [2022-04-06 18:51:57,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 362 states have (on average 1.4530386740331491) internal successors, (526), 362 states have internal predecessors, (526), 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) [2022-04-06 18:51:57,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 530 transitions. [2022-04-06 18:51:57,930 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 530 transitions. Word has length 41 [2022-04-06 18:51:57,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 18:51:57,930 INFO L478 AbstractCegarLoop]: Abstraction has 367 states and 530 transitions. [2022-04-06 18:51:57,931 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:51:57,931 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 530 transitions. [2022-04-06 18:51:57,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-04-06 18:51:57,932 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 18:51:57,932 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] [2022-04-06 18:51:57,932 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-04-06 18:51:57,932 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 18:51:57,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 18:51:57,932 INFO L85 PathProgramCache]: Analyzing trace with hash 2030967520, now seen corresponding path program 1 times [2022-04-06 18:51:57,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 18:51:57,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1299024240] [2022-04-06 18:51:57,933 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 18:51:57,933 INFO L85 PathProgramCache]: Analyzing trace with hash 2030967520, now seen corresponding path program 2 times [2022-04-06 18:51:57,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 18:51:57,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416339970] [2022-04-06 18:51:57,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 18:51:57,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 18:51:57,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:51:57,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 18:51:57,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:51:57,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 18:51:57,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 18:51:57,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416339970] [2022-04-06 18:51:57,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416339970] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:51:57,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:51:57,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 18:51:57,960 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 18:51:57,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1299024240] [2022-04-06 18:51:57,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1299024240] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:51:57,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:51:57,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 18:51:57,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245504757] [2022-04-06 18:51:57,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 18:51:57,960 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 18:51:57,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 18:51:57,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 18:51:57,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 18:51:57,961 INFO L87 Difference]: Start difference. First operand 367 states and 530 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:51:58,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 18:51:58,209 INFO L93 Difference]: Finished difference Result 850 states and 1263 transitions. [2022-04-06 18:51:58,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 18:51:58,209 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (3), 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 41 [2022-04-06 18:51:58,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 18:51:58,211 INFO L225 Difference]: With dead ends: 850 [2022-04-06 18:51:58,211 INFO L226 Difference]: Without dead ends: 473 [2022-04-06 18:51:58,212 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 [2022-04-06 18:51:58,212 INFO L913 BasicCegarLoop]: 234 mSDtfsCounter, 313 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 18:51:58,213 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [313 Valid, 241 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 18:51:58,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2022-04-06 18:51:58,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 461. [2022-04-06 18:51:58,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 456 states have (on average 1.4473684210526316) internal successors, (660), 456 states have internal predecessors, (660), 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) [2022-04-06 18:51:58,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 664 transitions. [2022-04-06 18:51:58,251 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 664 transitions. Word has length 41 [2022-04-06 18:51:58,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 18:51:58,251 INFO L478 AbstractCegarLoop]: Abstraction has 461 states and 664 transitions. [2022-04-06 18:51:58,252 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:51:58,252 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 664 transitions. [2022-04-06 18:51:58,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-04-06 18:51:58,252 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 18:51:58,252 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] [2022-04-06 18:51:58,253 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-04-06 18:51:58,253 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 18:51:58,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 18:51:58,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1025513814, now seen corresponding path program 1 times [2022-04-06 18:51:58,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 18:51:58,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1613882548] [2022-04-06 18:51:58,254 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 18:51:58,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1025513814, now seen corresponding path program 2 times [2022-04-06 18:51:58,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 18:51:58,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367154781] [2022-04-06 18:51:58,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 18:51:58,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 18:51:58,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:51:58,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 18:51:58,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:51:58,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 18:51:58,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 18:51:58,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367154781] [2022-04-06 18:51:58,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367154781] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:51:58,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:51:58,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 18:51:58,281 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 18:51:58,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1613882548] [2022-04-06 18:51:58,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1613882548] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:51:58,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:51:58,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 18:51:58,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142209119] [2022-04-06 18:51:58,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 18:51:58,282 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 18:51:58,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 18:51:58,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 18:51:58,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 18:51:58,282 INFO L87 Difference]: Start difference. First operand 461 states and 664 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:51:58,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 18:51:58,467 INFO L93 Difference]: Finished difference Result 920 states and 1326 transitions. [2022-04-06 18:51:58,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 18:51:58,468 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (3), 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 41 [2022-04-06 18:51:58,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 18:51:58,469 INFO L225 Difference]: With dead ends: 920 [2022-04-06 18:51:58,469 INFO L226 Difference]: Without dead ends: 473 [2022-04-06 18:51:58,470 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 [2022-04-06 18:51:58,471 INFO L913 BasicCegarLoop]: 226 mSDtfsCounter, 221 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 18:51:58,471 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [221 Valid, 233 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 18:51:58,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2022-04-06 18:51:58,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 471. [2022-04-06 18:51:58,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 466 states have (on average 1.44206008583691) internal successors, (672), 466 states have internal predecessors, (672), 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) [2022-04-06 18:51:58,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 676 transitions. [2022-04-06 18:51:58,497 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 676 transitions. Word has length 41 [2022-04-06 18:51:58,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 18:51:58,497 INFO L478 AbstractCegarLoop]: Abstraction has 471 states and 676 transitions. [2022-04-06 18:51:58,497 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:51:58,497 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 676 transitions. [2022-04-06 18:51:58,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-04-06 18:51:58,497 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 18:51:58,498 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 18:51:58,498 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-04-06 18:51:58,498 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 18:51:58,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 18:51:58,498 INFO L85 PathProgramCache]: Analyzing trace with hash 564813646, now seen corresponding path program 1 times [2022-04-06 18:51:58,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 18:51:58,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [519050028] [2022-04-06 18:51:58,499 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 18:51:58,499 INFO L85 PathProgramCache]: Analyzing trace with hash 564813646, now seen corresponding path program 2 times [2022-04-06 18:51:58,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 18:51:58,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008564480] [2022-04-06 18:51:58,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 18:51:58,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 18:51:58,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:51:58,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 18:51:58,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:51:58,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 18:51:58,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 18:51:58,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008564480] [2022-04-06 18:51:58,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008564480] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:51:58,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:51:58,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 18:51:58,524 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 18:51:58,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [519050028] [2022-04-06 18:51:58,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [519050028] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:51:58,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:51:58,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 18:51:58,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308982880] [2022-04-06 18:51:58,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 18:51:58,524 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 18:51:58,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 18:51:58,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 18:51:58,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 18:51:58,525 INFO L87 Difference]: Start difference. First operand 471 states and 676 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:51:58,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 18:51:58,748 INFO L93 Difference]: Finished difference Result 1058 states and 1561 transitions. [2022-04-06 18:51:58,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 18:51:58,749 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 43 [2022-04-06 18:51:58,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 18:51:58,751 INFO L225 Difference]: With dead ends: 1058 [2022-04-06 18:51:58,751 INFO L226 Difference]: Without dead ends: 577 [2022-04-06 18:51:58,752 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 [2022-04-06 18:51:58,753 INFO L913 BasicCegarLoop]: 234 mSDtfsCounter, 352 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 18:51:58,754 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [352 Valid, 241 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 18:51:58,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2022-04-06 18:51:58,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 533. [2022-04-06 18:51:58,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 528 states have (on average 1.4621212121212122) internal successors, (772), 528 states have internal predecessors, (772), 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) [2022-04-06 18:51:58,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 776 transitions. [2022-04-06 18:51:58,779 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 776 transitions. Word has length 43 [2022-04-06 18:51:58,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 18:51:58,779 INFO L478 AbstractCegarLoop]: Abstraction has 533 states and 776 transitions. [2022-04-06 18:51:58,779 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:51:58,779 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 776 transitions. [2022-04-06 18:51:58,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-04-06 18:51:58,780 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 18:51:58,780 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] [2022-04-06 18:51:58,780 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-04-06 18:51:58,780 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 18:51:58,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 18:51:58,781 INFO L85 PathProgramCache]: Analyzing trace with hash 924583977, now seen corresponding path program 1 times [2022-04-06 18:51:58,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 18:51:58,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [601979088] [2022-04-06 18:51:58,781 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 18:51:58,781 INFO L85 PathProgramCache]: Analyzing trace with hash 924583977, now seen corresponding path program 2 times [2022-04-06 18:51:58,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 18:51:58,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216941979] [2022-04-06 18:51:58,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 18:51:58,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 18:51:58,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:51:58,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 18:51:58,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:51:58,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 18:51:58,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 18:51:58,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216941979] [2022-04-06 18:51:58,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216941979] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:51:58,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:51:58,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 18:51:58,826 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 18:51:58,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [601979088] [2022-04-06 18:51:58,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [601979088] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:51:58,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:51:58,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 18:51:58,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845790211] [2022-04-06 18:51:58,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 18:51:58,827 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 18:51:58,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 18:51:58,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 18:51:58,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 18:51:58,827 INFO L87 Difference]: Start difference. First operand 533 states and 776 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:51:59,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 18:51:59,021 INFO L93 Difference]: Finished difference Result 1555 states and 2264 transitions. [2022-04-06 18:51:59,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 18:51:59,022 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (3), 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 47 [2022-04-06 18:51:59,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 18:51:59,025 INFO L225 Difference]: With dead ends: 1555 [2022-04-06 18:51:59,025 INFO L226 Difference]: Without dead ends: 1036 [2022-04-06 18:51:59,026 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 [2022-04-06 18:51:59,027 INFO L913 BasicCegarLoop]: 409 mSDtfsCounter, 419 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 18:51:59,027 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [419 Valid, 416 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 18:51:59,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2022-04-06 18:51:59,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 535. [2022-04-06 18:51:59,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 530 states have (on average 1.460377358490566) internal successors, (774), 530 states have internal predecessors, (774), 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) [2022-04-06 18:51:59,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 778 transitions. [2022-04-06 18:51:59,058 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 778 transitions. Word has length 47 [2022-04-06 18:51:59,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 18:51:59,059 INFO L478 AbstractCegarLoop]: Abstraction has 535 states and 778 transitions. [2022-04-06 18:51:59,059 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:51:59,059 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 778 transitions. [2022-04-06 18:51:59,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-04-06 18:51:59,060 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 18:51:59,060 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] [2022-04-06 18:51:59,060 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-04-06 18:51:59,060 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 18:51:59,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 18:51:59,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1945652331, now seen corresponding path program 1 times [2022-04-06 18:51:59,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 18:51:59,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1189755876] [2022-04-06 18:51:59,061 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 18:51:59,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1945652331, now seen corresponding path program 2 times [2022-04-06 18:51:59,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 18:51:59,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579481452] [2022-04-06 18:51:59,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 18:51:59,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 18:51:59,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:51:59,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 18:51:59,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:51:59,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 18:51:59,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 18:51:59,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579481452] [2022-04-06 18:51:59,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579481452] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:51:59,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:51:59,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 18:51:59,110 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 18:51:59,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1189755876] [2022-04-06 18:51:59,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1189755876] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:51:59,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:51:59,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 18:51:59,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411746698] [2022-04-06 18:51:59,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 18:51:59,111 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 18:51:59,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 18:51:59,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 18:51:59,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-04-06 18:51:59,112 INFO L87 Difference]: Start difference. First operand 535 states and 778 transitions. Second operand has 6 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 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) [2022-04-06 18:51:59,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 18:51:59,454 INFO L93 Difference]: Finished difference Result 1175 states and 1726 transitions. [2022-04-06 18:51:59,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-06 18:51:59,454 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 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) Word has length 47 [2022-04-06 18:51:59,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 18:51:59,456 INFO L225 Difference]: With dead ends: 1175 [2022-04-06 18:51:59,456 INFO L226 Difference]: Without dead ends: 642 [2022-04-06 18:51:59,457 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-04-06 18:51:59,458 INFO L913 BasicCegarLoop]: 181 mSDtfsCounter, 630 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 630 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-06 18:51:59,458 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [630 Valid, 198 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-06 18:51:59,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2022-04-06 18:51:59,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 595. [2022-04-06 18:51:59,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 590 states have (on average 1.4508474576271186) internal successors, (856), 590 states have internal predecessors, (856), 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) [2022-04-06 18:51:59,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 860 transitions. [2022-04-06 18:51:59,508 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 860 transitions. Word has length 47 [2022-04-06 18:51:59,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 18:51:59,508 INFO L478 AbstractCegarLoop]: Abstraction has 595 states and 860 transitions. [2022-04-06 18:51:59,509 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 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) [2022-04-06 18:51:59,509 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 860 transitions. [2022-04-06 18:51:59,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-04-06 18:51:59,510 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 18:51:59,510 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 18:51:59,510 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-04-06 18:51:59,510 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 18:51:59,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 18:51:59,511 INFO L85 PathProgramCache]: Analyzing trace with hash 427057800, now seen corresponding path program 1 times [2022-04-06 18:51:59,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 18:51:59,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1192141274] [2022-04-06 18:51:59,669 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 4 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=2, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:51:59,669 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.logic.Theory.term(Theory.java:1603) 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.acceleratedinterpolation.PredicateHelper.makeReflexive(PredicateHelper.java:222) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolationCore.acceleratedInterpolationCoreIsCorrect(AcceleratedInterpolationCore.java:253) 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:412) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) 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) [2022-04-06 18:51:59,675 INFO L158 Benchmark]: Toolchain (without parser) took 5223.64ms. Allocated memory was 201.3MB in the beginning and 399.5MB in the end (delta: 198.2MB). Free memory was 150.4MB in the beginning and 287.8MB in the end (delta: -137.4MB). Peak memory consumption was 61.5MB. Max. memory is 8.0GB. [2022-04-06 18:51:59,675 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 201.3MB. Free memory is still 166.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-06 18:51:59,676 INFO L158 Benchmark]: CACSL2BoogieTranslator took 317.83ms. Allocated memory is still 201.3MB. Free memory was 150.2MB in the beginning and 172.2MB in the end (delta: -22.0MB). Peak memory consumption was 12.2MB. Max. memory is 8.0GB. [2022-04-06 18:51:59,676 INFO L158 Benchmark]: Boogie Preprocessor took 58.23ms. Allocated memory is still 201.3MB. Free memory was 172.2MB in the beginning and 169.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-06 18:51:59,676 INFO L158 Benchmark]: RCFGBuilder took 559.64ms. Allocated memory is still 201.3MB. Free memory was 169.5MB in the beginning and 140.8MB in the end (delta: 28.6MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. [2022-04-06 18:51:59,676 INFO L158 Benchmark]: TraceAbstraction took 4283.90ms. Allocated memory was 201.3MB in the beginning and 399.5MB in the end (delta: 198.2MB). Free memory was 140.5MB in the beginning and 287.8MB in the end (delta: -147.2MB). Peak memory consumption was 52.4MB. Max. memory is 8.0GB. [2022-04-06 18:51:59,677 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 201.3MB. Free memory is still 166.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 317.83ms. Allocated memory is still 201.3MB. Free memory was 150.2MB in the beginning and 172.2MB in the end (delta: -22.0MB). Peak memory consumption was 12.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 58.23ms. Allocated memory is still 201.3MB. Free memory was 172.2MB in the beginning and 169.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 559.64ms. Allocated memory is still 201.3MB. Free memory was 169.5MB in the beginning and 140.8MB in the end (delta: 28.6MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. * TraceAbstraction took 4283.90ms. Allocated memory was 201.3MB in the beginning and 399.5MB in the end (delta: 198.2MB). Free memory was 140.5MB in the beginning and 287.8MB in the end (delta: -147.2MB). Peak memory consumption was 52.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.logic.Theory.term(Theory.java:1603) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-04-06 18:51:59,699 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...