/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/openssl-simplified/s3_srvr_1.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-5d317bd [2022-03-19 13:15:49,012 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-19 13:15:49,014 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-19 13:15:49,051 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-19 13:15:49,069 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-19 13:15:49,069 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-19 13:15:49,070 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-19 13:15:49,071 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-19 13:15:49,072 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-19 13:15:49,072 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-19 13:15:49,073 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-19 13:15:49,075 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-19 13:15:49,076 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-19 13:15:49,078 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-19 13:15:49,080 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-19 13:15:49,083 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-19 13:15:49,084 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-19 13:15:49,090 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-19 13:15:49,098 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-19 13:15:49,098 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-19 13:15:49,101 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-19 13:15:49,101 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-03-19 13:15:49,112 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-19 13:15:49,113 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-19 13:15:49,114 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-19 13:15:49,115 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-19 13:15:49,115 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-19 13:15:49,115 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-19 13:15:49,115 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-19 13:15:49,115 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-19 13:15:49,115 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-19 13:15:49,116 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-19 13:15:49,116 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-19 13:15:49,116 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-19 13:15:49,116 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-19 13:15:49,116 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-19 13:15:49,117 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-19 13:15:49,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-19 13:15:49,117 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-19 13:15:49,117 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-19 13:15:49,117 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-03-19 13:15:49,117 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-03-19 13:15:49,117 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-19 13:15:49,118 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-03-19 13:15:49,118 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-19 13:15:49,357 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-19 13:15:49,388 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-19 13:15:49,390 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-19 13:15:49,391 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-19 13:15:49,392 INFO L275 PluginConnector]: CDTParser initialized [2022-03-19 13:15:49,393 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/openssl-simplified/s3_srvr_1.cil-2.c [2022-03-19 13:15:49,442 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f38440d6c/365760f69d01482794780107d7f244ea/FLAGf8f7bc459 [2022-03-19 13:15:49,888 INFO L306 CDTParser]: Found 1 translation units. [2022-03-19 13:15:49,888 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/openssl-simplified/s3_srvr_1.cil-2.c [2022-03-19 13:15:49,920 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f38440d6c/365760f69d01482794780107d7f244ea/FLAGf8f7bc459 [2022-03-19 13:15:50,427 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f38440d6c/365760f69d01482794780107d7f244ea [2022-03-19 13:15:50,429 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-19 13:15:50,430 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-19 13:15:50,435 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-19 13:15:50,435 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-19 13:15:50,438 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-19 13:15:50,439 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 01:15:50" (1/1) ... [2022-03-19 13:15:50,439 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a48738e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:15:50, skipping insertion in model container [2022-03-19 13:15:50,440 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 01:15:50" (1/1) ... [2022-03-19 13:15:50,445 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-19 13:15:50,471 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-19 13:15:50,682 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/openssl-simplified/s3_srvr_1.cil-2.c[43387,43400] [2022-03-19 13:15:50,685 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-19 13:15:50,691 INFO L203 MainTranslator]: Completed pre-run [2022-03-19 13:15:50,731 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/openssl-simplified/s3_srvr_1.cil-2.c[43387,43400] [2022-03-19 13:15:50,732 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-19 13:15:50,743 INFO L208 MainTranslator]: Completed translation [2022-03-19 13:15:50,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:15:50 WrapperNode [2022-03-19 13:15:50,743 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-19 13:15:50,744 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-19 13:15:50,744 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-19 13:15:50,744 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-19 13:15:50,757 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:15:50" (1/1) ... [2022-03-19 13:15:50,757 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:15:50" (1/1) ... [2022-03-19 13:15:50,764 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:15:50" (1/1) ... [2022-03-19 13:15:50,765 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:15:50" (1/1) ... [2022-03-19 13:15:50,774 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:15:50" (1/1) ... [2022-03-19 13:15:50,781 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:15:50" (1/1) ... [2022-03-19 13:15:50,783 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:15:50" (1/1) ... [2022-03-19 13:15:50,786 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-19 13:15:50,787 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-19 13:15:50,787 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-19 13:15:50,787 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-19 13:15:50,788 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:15:50" (1/1) ... [2022-03-19 13:15:50,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-19 13:15:50,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 13:15:50,833 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-19 13:15:50,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-19 13:15:50,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-19 13:15:50,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-19 13:15:50,863 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-19 13:15:50,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2022-03-19 13:15:50,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR [2022-03-19 13:15:50,863 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-19 13:15:50,863 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-19 13:15:50,863 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-19 13:15:50,863 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-19 13:15:50,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-19 13:15:50,863 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-03-19 13:15:50,864 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-19 13:15:50,864 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-03-19 13:15:50,864 INFO L130 BoogieDeclarations]: Found specification of procedure ERR [2022-03-19 13:15:50,864 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2022-03-19 13:15:50,864 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-19 13:15:50,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-19 13:15:50,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-19 13:15:50,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-19 13:15:50,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-19 13:15:50,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-19 13:15:50,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-19 13:15:50,939 INFO L234 CfgBuilder]: Building ICFG [2022-03-19 13:15:50,940 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-19 13:15:51,044 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 13:15:51,506 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2022-03-19 13:15:51,506 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2022-03-19 13:15:51,515 INFO L275 CfgBuilder]: Performing block encoding [2022-03-19 13:15:51,522 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-19 13:15:51,522 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-19 13:15:51,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 01:15:51 BoogieIcfgContainer [2022-03-19 13:15:51,528 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-19 13:15:51,531 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-19 13:15:51,531 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-19 13:15:51,534 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-19 13:15:51,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.03 01:15:50" (1/3) ... [2022-03-19 13:15:51,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@688a7aab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 01:15:51, skipping insertion in model container [2022-03-19 13:15:51,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:15:50" (2/3) ... [2022-03-19 13:15:51,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@688a7aab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 01:15:51, skipping insertion in model container [2022-03-19 13:15:51,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 01:15:51" (3/3) ... [2022-03-19 13:15:51,538 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_1.cil-2.c [2022-03-19 13:15:51,542 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-19 13:15:51,542 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-19 13:15:51,585 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-19 13:15:51,593 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-19 13:15:51,593 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-19 13:15:51,611 INFO L276 IsEmpty]: Start isEmpty. Operand has 155 states, 145 states have (on average 1.696551724137931) internal successors, (246), 147 states have internal predecessors, (246), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-03-19 13:15:51,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-03-19 13:15:51,632 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:15:51,633 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:15:51,633 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ERRErr0ASSERT_VIOLATIONERROR_FUNCTION === [ERRErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:15:51,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:15:51,638 INFO L85 PathProgramCache]: Analyzing trace with hash -360564499, now seen corresponding path program 1 times [2022-03-19 13:15:51,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:15:51,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1452716000] [2022-03-19 13:15:51,658 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 13:15:51,659 INFO L85 PathProgramCache]: Analyzing trace with hash -360564499, now seen corresponding path program 2 times [2022-03-19 13:15:51,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:15:51,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564636639] [2022-03-19 13:15:51,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:15:51,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:15:51,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:51,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:15:51,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:51,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 13:15:51,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:15:51,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564636639] [2022-03-19 13:15:51,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564636639] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:15:51,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:15:51,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-19 13:15:51,968 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:15:51,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1452716000] [2022-03-19 13:15:51,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1452716000] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:15:51,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:15:51,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-19 13:15:51,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072173682] [2022-03-19 13:15:51,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:15:51,972 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-19 13:15:51,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:15:52,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-19 13:15:52,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-19 13:15:52,004 INFO L87 Difference]: Start difference. First operand has 155 states, 145 states have (on average 1.696551724137931) internal successors, (246), 147 states have internal predecessors, (246), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 13:15:52,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:15:52,460 INFO L93 Difference]: Finished difference Result 424 states and 712 transitions. [2022-03-19 13:15:52,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-19 13:15:52,462 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 52 [2022-03-19 13:15:52,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:15:52,474 INFO L225 Difference]: With dead ends: 424 [2022-03-19 13:15:52,474 INFO L226 Difference]: Without dead ends: 256 [2022-03-19 13:15:52,478 INFO L911 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 [2022-03-19 13:15:52,481 INFO L912 BasicCegarLoop]: 242 mSDtfsCounter, 637 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 639 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-19 13:15:52,481 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [639 Valid, 251 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-19 13:15:52,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2022-03-19 13:15:52,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2022-03-19 13:15:52,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 250 states have (on average 1.52) internal successors, (380), 250 states have internal predecessors, (380), 4 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 13:15:52,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 385 transitions. [2022-03-19 13:15:52,536 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 385 transitions. Word has length 52 [2022-03-19 13:15:52,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:15:52,537 INFO L478 AbstractCegarLoop]: Abstraction has 256 states and 385 transitions. [2022-03-19 13:15:52,537 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 13:15:52,537 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 385 transitions. [2022-03-19 13:15:52,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-03-19 13:15:52,540 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:15:52,540 INFO L500 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:15:52,541 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-19 13:15:52,541 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ERRErr0ASSERT_VIOLATIONERROR_FUNCTION === [ERRErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:15:52,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:15:52,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1193418840, now seen corresponding path program 1 times [2022-03-19 13:15:52,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:15:52,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [70231917]