/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_13.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 13:21:26,327 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 13:21:26,330 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 13:21:26,343 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 13:21:26,343 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 13:21:26,345 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 13:21:26,346 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 13:21:26,348 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 13:21:26,350 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 13:21:26,351 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 13:21:26,352 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 13:21:26,353 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 13:21:26,353 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 13:21:26,355 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 13:21:26,356 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 13:21:26,357 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 13:21:26,358 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 13:21:26,359 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 13:21:26,360 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 13:21:26,363 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 13:21:26,364 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 13:21:26,366 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 13:21:26,367 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 13:21:26,368 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 13:21:26,370 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 13:21:26,379 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 13:21:26,380 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 13:21:26,381 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 13:21:26,382 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 13:21:26,391 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 13:21:26,392 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 13:21:26,393 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 13:21:26,393 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 13:21:26,393 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 13:21:26,393 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 13:21:26,393 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 13:21:26,394 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 13:21:26,394 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 13:21:26,394 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 13:21:26,394 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 13:21:26,399 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 13:21:26,399 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 13:21:26,399 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 13:21:26,399 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 13:21:26,400 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 13:21:26,400 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 13:21:26,400 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 13:21:26,400 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:21:26,400 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 13:21:26,401 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 13:21:26,401 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 13:21:26,401 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 13:21:26,686 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 13:21:26,704 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 13:21:26,710 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 13:21:26,711 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 13:21:26,712 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 13:21:26,713 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_13.cil.c [2020-07-07 13:21:26,797 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/739b9e619/5a1657c4f4a54a72b89d4419938b84c4/FLAG130fe9fd4 [2020-07-07 13:21:27,379 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 13:21:27,380 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ssh-simplified/s3_srvr_13.cil.c [2020-07-07 13:21:27,393 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/739b9e619/5a1657c4f4a54a72b89d4419938b84c4/FLAG130fe9fd4 [2020-07-07 13:21:27,661 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/739b9e619/5a1657c4f4a54a72b89d4419938b84c4 [2020-07-07 13:21:27,670 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 13:21:27,672 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 13:21:27,673 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 13:21:27,673 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 13:21:27,677 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 13:21:27,678 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:21:27" (1/1) ... [2020-07-07 13:21:27,681 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f48acc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:21:27, skipping insertion in model container [2020-07-07 13:21:27,682 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:21:27" (1/1) ... [2020-07-07 13:21:27,690 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 13:21:27,734 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 13:21:28,013 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:21:28,018 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 13:21:28,203 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:21:28,225 INFO L208 MainTranslator]: Completed translation [2020-07-07 13:21:28,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:21:28 WrapperNode [2020-07-07 13:21:28,225 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 13:21:28,226 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 13:21:28,227 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 13:21:28,227 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 13:21:28,239 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:21:28" (1/1) ... [2020-07-07 13:21:28,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:21:28" (1/1) ... [2020-07-07 13:21:28,249 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:21:28" (1/1) ... [2020-07-07 13:21:28,250 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:21:28" (1/1) ... [2020-07-07 13:21:28,263 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:21:28" (1/1) ... [2020-07-07 13:21:28,279 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:21:28" (1/1) ... [2020-07-07 13:21:28,282 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:21:28" (1/1) ... [2020-07-07 13:21:28,287 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 13:21:28,288 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 13:21:28,288 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 13:21:28,288 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 13:21:28,289 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:21:28" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:21:28,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 13:21:28,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 13:21:28,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-07-07 13:21:28,363 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 13:21:28,363 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 13:21:28,364 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-07-07 13:21:28,364 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 13:21:28,364 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-07-07 13:21:28,364 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-07-07 13:21:28,364 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 13:21:28,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 13:21:28,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 13:21:28,631 WARN L775 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-07-07 13:21:29,343 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-07-07 13:21:29,344 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-07-07 13:21:29,360 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 13:21:29,361 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-07 13:21:29,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:21:29 BoogieIcfgContainer [2020-07-07 13:21:29,369 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 13:21:29,371 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 13:21:29,371 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 13:21:29,374 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 13:21:29,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 01:21:27" (1/3) ... [2020-07-07 13:21:29,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2015dfdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:21:29, skipping insertion in model container [2020-07-07 13:21:29,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:21:28" (2/3) ... [2020-07-07 13:21:29,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2015dfdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:21:29, skipping insertion in model container [2020-07-07 13:21:29,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:21:29" (3/3) ... [2020-07-07 13:21:29,379 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_13.cil.c [2020-07-07 13:21:29,392 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 13:21:29,402 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 13:21:29,418 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 13:21:29,443 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 13:21:29,443 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 13:21:29,444 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 13:21:29,444 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 13:21:29,444 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 13:21:29,444 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 13:21:29,445 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 13:21:29,445 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 13:21:29,475 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states. [2020-07-07 13:21:29,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-07-07 13:21:29,501 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:21:29,503 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:21:29,503 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:21:29,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:21:29,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1103530067, now seen corresponding path program 1 times [2020-07-07 13:21:29,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:21:29,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1099638434] [2020-07-07 13:21:29,523 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:21:29,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:29,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:30,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:21:30,036 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:21:30,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1099638434] [2020-07-07 13:21:30,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:21:30,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-07 13:21:30,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009179583] [2020-07-07 13:21:30,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-07 13:21:30,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:21:30,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-07 13:21:30,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-07 13:21:30,067 INFO L87 Difference]: Start difference. First operand 440 states. Second operand 6 states. [2020-07-07 13:21:30,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:21:30,609 INFO L93 Difference]: Finished difference Result 832 states and 1103 transitions. [2020-07-07 13:21:30,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-07 13:21:30,612 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 160 [2020-07-07 13:21:30,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:21:30,639 INFO L225 Difference]: With dead ends: 832 [2020-07-07 13:21:30,643 INFO L226 Difference]: Without dead ends: 472 [2020-07-07 13:21:30,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-07-07 13:21:30,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2020-07-07 13:21:30,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 459. [2020-07-07 13:21:30,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 459 states. [2020-07-07 13:21:30,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 549 transitions. [2020-07-07 13:21:30,823 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 549 transitions. Word has length 160 [2020-07-07 13:21:30,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:21:30,824 INFO L479 AbstractCegarLoop]: Abstraction has 459 states and 549 transitions. [2020-07-07 13:21:30,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-07 13:21:30,825 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 549 transitions. [2020-07-07 13:21:30,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-07-07 13:21:30,829 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:21:30,829 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:21:30,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 13:21:30,830 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:21:30,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:21:30,831 INFO L82 PathProgramCache]: Analyzing trace with hash -466072829, now seen corresponding path program 1 times [2020-07-07 13:21:30,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:21:30,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1476972152] [2020-07-07 13:21:30,832 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:21:30,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:30,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:31,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:21:31,016 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:21:31,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1476972152] [2020-07-07 13:21:31,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:21:31,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:21:31,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439307100] [2020-07-07 13:21:31,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:21:31,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:21:31,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:21:31,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:21:31,023 INFO L87 Difference]: Start difference. First operand 459 states and 549 transitions. Second operand 3 states. [2020-07-07 13:21:31,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:21:31,178 INFO L93 Difference]: Finished difference Result 1085 states and 1347 transitions. [2020-07-07 13:21:31,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:21:31,179 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 169 [2020-07-07 13:21:31,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:21:31,186 INFO L225 Difference]: With dead ends: 1085 [2020-07-07 13:21:31,186 INFO L226 Difference]: Without dead ends: 766 [2020-07-07 13:21:31,193 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:21:31,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2020-07-07 13:21:31,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 764. [2020-07-07 13:21:31,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 764 states. [2020-07-07 13:21:31,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 931 transitions. [2020-07-07 13:21:31,264 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 931 transitions. Word has length 169 [2020-07-07 13:21:31,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:21:31,266 INFO L479 AbstractCegarLoop]: Abstraction has 764 states and 931 transitions. [2020-07-07 13:21:31,266 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:21:31,267 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 931 transitions. [2020-07-07 13:21:31,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-07-07 13:21:31,278 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:21:31,279 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:21:31,279 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 13:21:31,279 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:21:31,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:21:31,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1669990880, now seen corresponding path program 1 times [2020-07-07 13:21:31,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:21:31,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [658127341] [2020-07-07 13:21:31,281 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:21:31,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:31,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:31,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:21:31,433 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:21:31,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [658127341] [2020-07-07 13:21:31,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:21:31,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:21:31,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493534031] [2020-07-07 13:21:31,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:21:31,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:21:31,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:21:31,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:21:31,437 INFO L87 Difference]: Start difference. First operand 764 states and 931 transitions. Second operand 3 states. [2020-07-07 13:21:31,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:21:31,794 INFO L93 Difference]: Finished difference Result 1539 states and 1955 transitions. [2020-07-07 13:21:31,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:21:31,795 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 170 [2020-07-07 13:21:31,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:21:31,801 INFO L225 Difference]: With dead ends: 1539 [2020-07-07 13:21:31,802 INFO L226 Difference]: Without dead ends: 891 [2020-07-07 13:21:31,804 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:21:31,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2020-07-07 13:21:31,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 822. [2020-07-07 13:21:31,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 822 states. [2020-07-07 13:21:31,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 1019 transitions. [2020-07-07 13:21:31,867 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 1019 transitions. Word has length 170 [2020-07-07 13:21:31,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:21:31,868 INFO L479 AbstractCegarLoop]: Abstraction has 822 states and 1019 transitions. [2020-07-07 13:21:31,868 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:21:31,868 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 1019 transitions. [2020-07-07 13:21:31,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-07-07 13:21:31,871 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:21:31,871 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:21:31,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 13:21:31,872 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:21:31,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:21:31,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1230208187, now seen corresponding path program 1 times [2020-07-07 13:21:31,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:21:31,873 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1794501061] [2020-07-07 13:21:31,873 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:21:31,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:32,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:32,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:21:32,121 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:21:32,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1794501061] [2020-07-07 13:21:32,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:21:32,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-07 13:21:32,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838369192] [2020-07-07 13:21:32,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-07 13:21:32,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:21:32,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-07 13:21:32,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-07 13:21:32,125 INFO L87 Difference]: Start difference. First operand 822 states and 1019 transitions. Second operand 6 states. [2020-07-07 13:21:32,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:21:32,573 INFO L93 Difference]: Finished difference Result 1293 states and 1643 transitions. [2020-07-07 13:21:32,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-07 13:21:32,574 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 175 [2020-07-07 13:21:32,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:21:32,578 INFO L225 Difference]: With dead ends: 1293 [2020-07-07 13:21:32,578 INFO L226 Difference]: Without dead ends: 585 [2020-07-07 13:21:32,581 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-07-07 13:21:32,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2020-07-07 13:21:32,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 569. [2020-07-07 13:21:32,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 569 states. [2020-07-07 13:21:32,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 703 transitions. [2020-07-07 13:21:32,633 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 703 transitions. Word has length 175 [2020-07-07 13:21:32,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:21:32,633 INFO L479 AbstractCegarLoop]: Abstraction has 569 states and 703 transitions. [2020-07-07 13:21:32,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-07 13:21:32,633 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 703 transitions. [2020-07-07 13:21:32,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-07-07 13:21:32,636 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:21:32,637 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:21:32,637 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 13:21:32,637 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:21:32,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:21:32,638 INFO L82 PathProgramCache]: Analyzing trace with hash -312164926, now seen corresponding path program 1 times [2020-07-07 13:21:32,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:21:32,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [795583443] [2020-07-07 13:21:32,639 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:21:32,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:32,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:32,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:21:32,771 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:21:32,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [795583443] [2020-07-07 13:21:32,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:21:32,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:21:32,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640020109] [2020-07-07 13:21:32,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:21:32,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:21:32,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:21:32,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:21:32,775 INFO L87 Difference]: Start difference. First operand 569 states and 703 transitions. Second operand 3 states. [2020-07-07 13:21:32,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:21:32,960 INFO L93 Difference]: Finished difference Result 1382 states and 1775 transitions. [2020-07-07 13:21:32,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:21:32,961 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 197 [2020-07-07 13:21:32,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:21:32,969 INFO L225 Difference]: With dead ends: 1382 [2020-07-07 13:21:32,970 INFO L226 Difference]: Without dead ends: 969 [2020-07-07 13:21:32,972 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:21:32,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 969 states. [2020-07-07 13:21:33,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 969 to 967. [2020-07-07 13:21:33,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 967 states. [2020-07-07 13:21:33,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1221 transitions. [2020-07-07 13:21:33,117 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1221 transitions. Word has length 197 [2020-07-07 13:21:33,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:21:33,118 INFO L479 AbstractCegarLoop]: Abstraction has 967 states and 1221 transitions. [2020-07-07 13:21:33,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:21:33,119 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1221 transitions. [2020-07-07 13:21:33,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-07-07 13:21:33,122 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:21:33,123 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:21:33,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-07 13:21:33,123 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:21:33,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:21:33,124 INFO L82 PathProgramCache]: Analyzing trace with hash -1190618208, now seen corresponding path program 1 times [2020-07-07 13:21:33,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:21:33,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [983537872] [2020-07-07 13:21:33,125 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:21:33,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:33,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:33,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:21:33,287 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:21:33,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [983537872] [2020-07-07 13:21:33,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:21:33,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:21:33,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718603484] [2020-07-07 13:21:33,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:21:33,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:21:33,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:21:33,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:21:33,292 INFO L87 Difference]: Start difference. First operand 967 states and 1221 transitions. Second operand 3 states. [2020-07-07 13:21:33,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:21:33,635 INFO L93 Difference]: Finished difference Result 1889 states and 2467 transitions. [2020-07-07 13:21:33,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:21:33,636 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 198 [2020-07-07 13:21:33,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:21:33,645 INFO L225 Difference]: With dead ends: 1889 [2020-07-07 13:21:33,645 INFO L226 Difference]: Without dead ends: 1078 [2020-07-07 13:21:33,648 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:21:33,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1078 states. [2020-07-07 13:21:33,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1078 to 1062. [2020-07-07 13:21:33,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1062 states. [2020-07-07 13:21:33,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1062 states to 1062 states and 1334 transitions. [2020-07-07 13:21:33,746 INFO L78 Accepts]: Start accepts. Automaton has 1062 states and 1334 transitions. Word has length 198 [2020-07-07 13:21:33,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:21:33,747 INFO L479 AbstractCegarLoop]: Abstraction has 1062 states and 1334 transitions. [2020-07-07 13:21:33,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:21:33,754 INFO L276 IsEmpty]: Start isEmpty. Operand 1062 states and 1334 transitions. [2020-07-07 13:21:33,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-07-07 13:21:33,759 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:21:33,759 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:21:33,759 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-07 13:21:33,759 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:21:33,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:21:33,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1815361344, now seen corresponding path program 1 times [2020-07-07 13:21:33,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:21:33,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2065060844] [2020-07-07 13:21:33,761 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:21:33,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:33,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:33,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:21:33,879 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:21:33,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2065060844] [2020-07-07 13:21:33,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:21:33,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:21:33,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679239931] [2020-07-07 13:21:33,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:21:33,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:21:33,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:21:33,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:21:33,882 INFO L87 Difference]: Start difference. First operand 1062 states and 1334 transitions. Second operand 3 states. [2020-07-07 13:21:34,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:21:34,210 INFO L93 Difference]: Finished difference Result 2052 states and 2632 transitions. [2020-07-07 13:21:34,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:21:34,210 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 198 [2020-07-07 13:21:34,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:21:34,217 INFO L225 Difference]: With dead ends: 2052 [2020-07-07 13:21:34,217 INFO L226 Difference]: Without dead ends: 1126 [2020-07-07 13:21:34,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:21:34,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2020-07-07 13:21:34,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 1093. [2020-07-07 13:21:34,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1093 states. [2020-07-07 13:21:34,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 1379 transitions. [2020-07-07 13:21:34,304 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 1379 transitions. Word has length 198 [2020-07-07 13:21:34,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:21:34,305 INFO L479 AbstractCegarLoop]: Abstraction has 1093 states and 1379 transitions. [2020-07-07 13:21:34,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:21:34,305 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 1379 transitions. [2020-07-07 13:21:34,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-07-07 13:21:34,309 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:21:34,309 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:21:34,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-07 13:21:34,310 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:21:34,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:21:34,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1252882748, now seen corresponding path program 1 times [2020-07-07 13:21:34,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:21:34,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1306628813] [2020-07-07 13:21:34,312 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:21:34,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:34,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:34,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:21:34,430 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:21:34,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1306628813] [2020-07-07 13:21:34,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:21:34,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:21:34,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662797370] [2020-07-07 13:21:34,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:21:34,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:21:34,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:21:34,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:21:34,433 INFO L87 Difference]: Start difference. First operand 1093 states and 1379 transitions. Second operand 3 states. [2020-07-07 13:21:34,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:21:34,554 INFO L93 Difference]: Finished difference Result 2050 states and 2622 transitions. [2020-07-07 13:21:34,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:21:34,555 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 207 [2020-07-07 13:21:34,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:21:34,561 INFO L225 Difference]: With dead ends: 2050 [2020-07-07 13:21:34,562 INFO L226 Difference]: Without dead ends: 1113 [2020-07-07 13:21:34,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:21:34,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2020-07-07 13:21:34,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 1111. [2020-07-07 13:21:34,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1111 states. [2020-07-07 13:21:34,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 1399 transitions. [2020-07-07 13:21:34,689 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 1399 transitions. Word has length 207 [2020-07-07 13:21:34,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:21:34,690 INFO L479 AbstractCegarLoop]: Abstraction has 1111 states and 1399 transitions. [2020-07-07 13:21:34,690 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:21:34,690 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 1399 transitions. [2020-07-07 13:21:34,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-07-07 13:21:34,694 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:21:34,694 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:21:34,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-07 13:21:34,694 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:21:34,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:21:34,695 INFO L82 PathProgramCache]: Analyzing trace with hash -50860722, now seen corresponding path program 1 times [2020-07-07 13:21:34,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:21:34,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1012114939] [2020-07-07 13:21:34,696 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:21:34,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:34,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:34,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:21:34,823 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:21:34,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1012114939] [2020-07-07 13:21:34,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:21:34,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 13:21:34,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237237285] [2020-07-07 13:21:34,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 13:21:34,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:21:34,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 13:21:34,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 13:21:34,831 INFO L87 Difference]: Start difference. First operand 1111 states and 1399 transitions. Second operand 4 states. [2020-07-07 13:21:35,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:21:35,271 INFO L93 Difference]: Finished difference Result 2163 states and 2744 transitions. [2020-07-07 13:21:35,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 13:21:35,272 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 209 [2020-07-07 13:21:35,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:21:35,281 INFO L225 Difference]: With dead ends: 2163 [2020-07-07 13:21:35,282 INFO L226 Difference]: Without dead ends: 1208 [2020-07-07 13:21:35,286 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-07 13:21:35,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1208 states. [2020-07-07 13:21:35,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1208 to 1131. [2020-07-07 13:21:35,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1131 states. [2020-07-07 13:21:35,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1131 states to 1131 states and 1419 transitions. [2020-07-07 13:21:35,420 INFO L78 Accepts]: Start accepts. Automaton has 1131 states and 1419 transitions. Word has length 209 [2020-07-07 13:21:35,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:21:35,420 INFO L479 AbstractCegarLoop]: Abstraction has 1131 states and 1419 transitions. [2020-07-07 13:21:35,420 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 13:21:35,421 INFO L276 IsEmpty]: Start isEmpty. Operand 1131 states and 1419 transitions. [2020-07-07 13:21:35,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-07-07 13:21:35,425 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:21:35,429 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:21:35,430 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-07 13:21:35,430 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:21:35,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:21:35,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1999743939, now seen corresponding path program 1 times [2020-07-07 13:21:35,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:21:35,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [854330075] [2020-07-07 13:21:35,433 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:21:35,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:35,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:35,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:21:35,606 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:21:35,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [854330075] [2020-07-07 13:21:35,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:21:35,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:21:35,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792947490] [2020-07-07 13:21:35,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:21:35,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:21:35,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:21:35,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:21:35,610 INFO L87 Difference]: Start difference. First operand 1131 states and 1419 transitions. Second operand 3 states. [2020-07-07 13:21:36,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:21:36,092 INFO L93 Difference]: Finished difference Result 2295 states and 2960 transitions. [2020-07-07 13:21:36,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:21:36,093 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 211 [2020-07-07 13:21:36,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:21:36,104 INFO L225 Difference]: With dead ends: 2295 [2020-07-07 13:21:36,104 INFO L226 Difference]: Without dead ends: 1284 [2020-07-07 13:21:36,109 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:21:36,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2020-07-07 13:21:36,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 1207. [2020-07-07 13:21:36,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1207 states. [2020-07-07 13:21:36,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1207 states to 1207 states and 1529 transitions. [2020-07-07 13:21:36,258 INFO L78 Accepts]: Start accepts. Automaton has 1207 states and 1529 transitions. Word has length 211 [2020-07-07 13:21:36,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:21:36,259 INFO L479 AbstractCegarLoop]: Abstraction has 1207 states and 1529 transitions. [2020-07-07 13:21:36,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:21:36,259 INFO L276 IsEmpty]: Start isEmpty. Operand 1207 states and 1529 transitions. [2020-07-07 13:21:36,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-07-07 13:21:36,264 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:21:36,264 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:21:36,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-07 13:21:36,265 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:21:36,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:21:36,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1941211029, now seen corresponding path program 1 times [2020-07-07 13:21:36,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:21:36,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [91054801] [2020-07-07 13:21:36,266 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:21:36,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:36,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:36,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:21:36,440 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:21:36,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [91054801] [2020-07-07 13:21:36,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:21:36,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 13:21:36,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600911429] [2020-07-07 13:21:36,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 13:21:36,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:21:36,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 13:21:36,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 13:21:36,444 INFO L87 Difference]: Start difference. First operand 1207 states and 1529 transitions. Second operand 4 states. [2020-07-07 13:21:37,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:21:37,120 INFO L93 Difference]: Finished difference Result 3413 states and 4441 transitions. [2020-07-07 13:21:37,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 13:21:37,121 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 216 [2020-07-07 13:21:37,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:21:37,136 INFO L225 Difference]: With dead ends: 3413 [2020-07-07 13:21:37,137 INFO L226 Difference]: Without dead ends: 2338 [2020-07-07 13:21:37,141 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-07 13:21:37,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2338 states. [2020-07-07 13:21:37,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2338 to 1243. [2020-07-07 13:21:37,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1243 states. [2020-07-07 13:21:37,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1243 states to 1243 states and 1583 transitions. [2020-07-07 13:21:37,307 INFO L78 Accepts]: Start accepts. Automaton has 1243 states and 1583 transitions. Word has length 216 [2020-07-07 13:21:37,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:21:37,308 INFO L479 AbstractCegarLoop]: Abstraction has 1243 states and 1583 transitions. [2020-07-07 13:21:37,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 13:21:37,308 INFO L276 IsEmpty]: Start isEmpty. Operand 1243 states and 1583 transitions. [2020-07-07 13:21:37,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-07-07 13:21:37,313 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:21:37,313 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:21:37,314 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-07 13:21:37,314 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:21:37,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:21:37,314 INFO L82 PathProgramCache]: Analyzing trace with hash -165389337, now seen corresponding path program 1 times [2020-07-07 13:21:37,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:21:37,315 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1732798001] [2020-07-07 13:21:37,316 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:21:37,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:37,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:37,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:21:37,437 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:21:37,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1732798001] [2020-07-07 13:21:37,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:21:37,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:21:37,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270233505] [2020-07-07 13:21:37,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:21:37,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:21:37,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:21:37,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:21:37,439 INFO L87 Difference]: Start difference. First operand 1243 states and 1583 transitions. Second operand 3 states. [2020-07-07 13:21:37,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:21:37,680 INFO L93 Difference]: Finished difference Result 2889 states and 3745 transitions. [2020-07-07 13:21:37,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:21:37,681 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 232 [2020-07-07 13:21:37,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:21:37,691 INFO L225 Difference]: With dead ends: 2889 [2020-07-07 13:21:37,691 INFO L226 Difference]: Without dead ends: 1802 [2020-07-07 13:21:37,695 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:21:37,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1802 states. [2020-07-07 13:21:37,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1802 to 1800. [2020-07-07 13:21:37,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1800 states. [2020-07-07 13:21:37,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1800 states to 1800 states and 2315 transitions. [2020-07-07 13:21:37,960 INFO L78 Accepts]: Start accepts. Automaton has 1800 states and 2315 transitions. Word has length 232 [2020-07-07 13:21:37,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:21:37,961 INFO L479 AbstractCegarLoop]: Abstraction has 1800 states and 2315 transitions. [2020-07-07 13:21:37,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:21:37,962 INFO L276 IsEmpty]: Start isEmpty. Operand 1800 states and 2315 transitions. [2020-07-07 13:21:37,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-07-07 13:21:37,969 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:21:37,970 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:21:37,970 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-07-07 13:21:37,970 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:21:37,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:21:37,971 INFO L82 PathProgramCache]: Analyzing trace with hash -662598379, now seen corresponding path program 1 times [2020-07-07 13:21:37,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:21:37,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1974452801] [2020-07-07 13:21:37,972 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:21:38,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:38,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:38,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:21:38,146 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:21:38,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1974452801] [2020-07-07 13:21:38,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:21:38,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 13:21:38,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142602356] [2020-07-07 13:21:38,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 13:21:38,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:21:38,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 13:21:38,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 13:21:38,150 INFO L87 Difference]: Start difference. First operand 1800 states and 2315 transitions. Second operand 4 states. [2020-07-07 13:21:39,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:21:39,007 INFO L93 Difference]: Finished difference Result 5166 states and 6784 transitions. [2020-07-07 13:21:39,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 13:21:39,008 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 244 [2020-07-07 13:21:39,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:21:39,029 INFO L225 Difference]: With dead ends: 5166 [2020-07-07 13:21:39,030 INFO L226 Difference]: Without dead ends: 3522 [2020-07-07 13:21:39,036 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-07 13:21:39,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3522 states. [2020-07-07 13:21:39,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3522 to 1809. [2020-07-07 13:21:39,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1809 states. [2020-07-07 13:21:39,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1809 states to 1809 states and 2324 transitions. [2020-07-07 13:21:39,316 INFO L78 Accepts]: Start accepts. Automaton has 1809 states and 2324 transitions. Word has length 244 [2020-07-07 13:21:39,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:21:39,316 INFO L479 AbstractCegarLoop]: Abstraction has 1809 states and 2324 transitions. [2020-07-07 13:21:39,316 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 13:21:39,316 INFO L276 IsEmpty]: Start isEmpty. Operand 1809 states and 2324 transitions. [2020-07-07 13:21:39,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-07-07 13:21:39,325 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:21:39,325 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:21:39,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-07-07 13:21:39,326 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:21:39,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:21:39,326 INFO L82 PathProgramCache]: Analyzing trace with hash 435015861, now seen corresponding path program 1 times [2020-07-07 13:21:39,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:21:39,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [549600596] [2020-07-07 13:21:39,337 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:21:39,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:39,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:39,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:21:39,472 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:21:39,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [549600596] [2020-07-07 13:21:39,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:21:39,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 13:21:39,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910489061] [2020-07-07 13:21:39,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 13:21:39,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:21:39,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 13:21:39,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 13:21:39,475 INFO L87 Difference]: Start difference. First operand 1809 states and 2324 transitions. Second operand 4 states. [2020-07-07 13:21:40,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:21:40,253 INFO L93 Difference]: Finished difference Result 5214 states and 6800 transitions. [2020-07-07 13:21:40,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 13:21:40,254 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 244 [2020-07-07 13:21:40,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:21:40,274 INFO L225 Difference]: With dead ends: 5214 [2020-07-07 13:21:40,274 INFO L226 Difference]: Without dead ends: 3537 [2020-07-07 13:21:40,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-07 13:21:40,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3537 states. [2020-07-07 13:21:40,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3537 to 1849. [2020-07-07 13:21:40,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1849 states. [2020-07-07 13:21:40,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1849 states to 1849 states and 2386 transitions. [2020-07-07 13:21:40,540 INFO L78 Accepts]: Start accepts. Automaton has 1849 states and 2386 transitions. Word has length 244 [2020-07-07 13:21:40,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:21:40,541 INFO L479 AbstractCegarLoop]: Abstraction has 1849 states and 2386 transitions. [2020-07-07 13:21:40,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 13:21:40,541 INFO L276 IsEmpty]: Start isEmpty. Operand 1849 states and 2386 transitions. [2020-07-07 13:21:40,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-07-07 13:21:40,547 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:21:40,547 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:21:40,548 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-07-07 13:21:40,548 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:21:40,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:21:40,548 INFO L82 PathProgramCache]: Analyzing trace with hash -173027549, now seen corresponding path program 1 times [2020-07-07 13:21:40,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:21:40,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1998401883] [2020-07-07 13:21:40,549 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:21:40,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:40,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:40,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:21:40,668 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:21:40,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1998401883] [2020-07-07 13:21:40,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:21:40,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 13:21:40,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765663190] [2020-07-07 13:21:40,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 13:21:40,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:21:40,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 13:21:40,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 13:21:40,670 INFO L87 Difference]: Start difference. First operand 1849 states and 2386 transitions. Second operand 4 states. [2020-07-07 13:21:41,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:21:41,418 INFO L93 Difference]: Finished difference Result 4492 states and 5930 transitions. [2020-07-07 13:21:41,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 13:21:41,419 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 247 [2020-07-07 13:21:41,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:21:41,434 INFO L225 Difference]: With dead ends: 4492 [2020-07-07 13:21:41,435 INFO L226 Difference]: Without dead ends: 2769 [2020-07-07 13:21:41,442 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-07 13:21:41,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2769 states. [2020-07-07 13:21:41,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2769 to 1400. [2020-07-07 13:21:41,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1400 states. [2020-07-07 13:21:41,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 1741 transitions. [2020-07-07 13:21:41,744 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 1741 transitions. Word has length 247 [2020-07-07 13:21:41,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:21:41,744 INFO L479 AbstractCegarLoop]: Abstraction has 1400 states and 1741 transitions. [2020-07-07 13:21:41,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 13:21:41,744 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 1741 transitions. [2020-07-07 13:21:41,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-07-07 13:21:41,750 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:21:41,750 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:21:41,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-07-07 13:21:41,750 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:21:41,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:21:41,751 INFO L82 PathProgramCache]: Analyzing trace with hash -196875119, now seen corresponding path program 1 times [2020-07-07 13:21:41,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:21:41,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1438920755] [2020-07-07 13:21:41,752 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:21:41,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 13:21:41,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 13:21:41,951 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:21:41,952 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-07 13:21:41,952 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 13:21:41,953 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-07-07 13:21:41,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 01:21:41 BoogieIcfgContainer [2020-07-07 13:21:41,984 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 13:21:41,987 INFO L168 Benchmark]: Toolchain (without parser) took 14314.47 ms. Allocated memory was 134.7 MB in the beginning and 630.2 MB in the end (delta: 495.5 MB). Free memory was 99.3 MB in the beginning and 513.4 MB in the end (delta: -414.1 MB). Peak memory consumption was 81.4 MB. Max. memory is 7.1 GB. [2020-07-07 13:21:41,988 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 134.7 MB. Free memory was 118.2 MB in the beginning and 118.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-07 13:21:41,989 INFO L168 Benchmark]: CACSL2BoogieTranslator took 552.91 ms. Allocated memory was 134.7 MB in the beginning and 199.8 MB in the end (delta: 65.0 MB). Free memory was 99.1 MB in the beginning and 175.2 MB in the end (delta: -76.0 MB). Peak memory consumption was 27.4 MB. Max. memory is 7.1 GB. [2020-07-07 13:21:41,989 INFO L168 Benchmark]: Boogie Preprocessor took 61.36 ms. Allocated memory is still 199.8 MB. Free memory was 175.2 MB in the beginning and 172.2 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-07-07 13:21:41,990 INFO L168 Benchmark]: RCFGBuilder took 1081.42 ms. Allocated memory is still 199.8 MB. Free memory was 172.2 MB in the beginning and 99.0 MB in the end (delta: 73.2 MB). Peak memory consumption was 73.2 MB. Max. memory is 7.1 GB. [2020-07-07 13:21:41,990 INFO L168 Benchmark]: TraceAbstraction took 12613.86 ms. Allocated memory was 199.8 MB in the beginning and 630.2 MB in the end (delta: 430.4 MB). Free memory was 98.3 MB in the beginning and 513.4 MB in the end (delta: -415.2 MB). Peak memory consumption was 15.3 MB. Max. memory is 7.1 GB. [2020-07-07 13:21:41,993 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 134.7 MB. Free memory was 118.2 MB in the beginning and 118.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 552.91 ms. Allocated memory was 134.7 MB in the beginning and 199.8 MB in the end (delta: 65.0 MB). Free memory was 99.1 MB in the beginning and 175.2 MB in the end (delta: -76.0 MB). Peak memory consumption was 27.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 61.36 ms. Allocated memory is still 199.8 MB. Free memory was 175.2 MB in the beginning and 172.2 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1081.42 ms. Allocated memory is still 199.8 MB. Free memory was 172.2 MB in the beginning and 99.0 MB in the end (delta: 73.2 MB). Peak memory consumption was 73.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12613.86 ms. Allocated memory was 199.8 MB in the beginning and 630.2 MB in the end (delta: 430.4 MB). Free memory was 98.3 MB in the beginning and 513.4 MB in the end (delta: -415.2 MB). Peak memory consumption was 15.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 642]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L647] int s ; [L648] int tmp ; [L652] s = 8464 [L653] CALL ssl3_accept(s) [L11] int s__info_callback = __VERIFIER_nondet_int() ; [L12] int s__in_handshake = __VERIFIER_nondet_int() ; [L13] int s__state ; [L14] int s__new_session ; [L15] int s__server ; [L16] int s__version = __VERIFIER_nondet_int() ; [L17] int s__type ; [L18] int s__init_num ; [L19] int s__hit = __VERIFIER_nondet_int() ; [L20] int s__rwstate ; [L21] int s__init_buf___0 = 1; [L22] int s__debug = __VERIFIER_nondet_int() ; [L23] int s__shutdown ; [L24] int s__cert = __VERIFIER_nondet_int() ; [L25] int s__options = __VERIFIER_nondet_int() ; [L26] int s__verify_mode = __VERIFIER_nondet_int() ; [L27] int s__session__peer = __VERIFIER_nondet_int() ; [L28] int s__cert__pkeys__AT0__privatekey = __VERIFIER_nondet_int() ; [L29] int s__ctx__info_callback = __VERIFIER_nondet_int() ; [L30] int s__ctx__stats__sess_accept_renegotiate = __VERIFIER_nondet_int() ; [L31] int s__ctx__stats__sess_accept = __VERIFIER_nondet_int() ; [L32] int s__ctx__stats__sess_accept_good = __VERIFIER_nondet_int() ; [L33] int s__s3__tmp__cert_request ; [L34] int s__s3__tmp__reuse_message ; [L35] int s__s3__tmp__use_rsa_tmp ; [L36] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int() ; [L37] int s__s3__tmp__new_cipher__algorithms ; [L38] int s__s3__tmp__next_state___0 ; [L39] int s__s3__tmp__new_cipher__algo_strength ; [L40] int s__session__cipher ; [L41] int buf ; [L42] unsigned long l ; [L43] unsigned long Time ; [L44] unsigned long tmp ; [L45] int cb ; [L46] long num1 = __VERIFIER_nondet_long() ; [L47] int ret ; [L48] int new_state ; [L49] int state ; [L50] int skip ; [L51] int got_new_session ; [L52] int tmp___1 = __VERIFIER_nondet_int() ; [L53] int tmp___2 = __VERIFIER_nondet_int() ; [L54] int tmp___3 = __VERIFIER_nondet_int() ; [L55] int tmp___4 = __VERIFIER_nondet_int() ; [L56] int tmp___5 = __VERIFIER_nondet_int() ; [L57] int tmp___6 = __VERIFIER_nondet_int() ; [L58] int tmp___7 = __VERIFIER_nondet_int() ; [L59] long tmp___8 = __VERIFIER_nondet_long() ; [L60] int tmp___9 = __VERIFIER_nondet_int() ; [L61] int tmp___10 = __VERIFIER_nondet_int() ; [L62] int blastFlag ; [L63] int __cil_tmp55 ; [L64] unsigned long __cil_tmp56 ; [L65] unsigned long __cil_tmp57 ; [L66] unsigned long __cil_tmp58 ; [L67] unsigned long __cil_tmp59 ; [L68] int __cil_tmp60 ; [L69] unsigned long __cil_tmp61 ; [L72] s__state = initial_state [L73] blastFlag = 0 [L74] tmp = __VERIFIER_nondet_int() [L75] Time = tmp [L76] cb = 0 [L77] ret = -1 [L78] skip = 0 [L79] got_new_session = 0 [L80] COND TRUE s__info_callback != 0 [L81] cb = s__info_callback [L87] s__in_handshake ++ [L88] COND FALSE !(tmp___1 + 12288) [L93] COND FALSE !(s__cert == 0) [L97] COND TRUE 1 [L99] state = s__state [L100] COND FALSE !(s__state == 12292) [L103] COND FALSE !(s__state == 16384) [L106] COND FALSE !(s__state == 8192) [L109] COND FALSE !(s__state == 24576) [L112] COND FALSE !(s__state == 8195) [L115] COND FALSE !(s__state == 8480) [L118] COND FALSE !(s__state == 8481) [L121] COND FALSE !(s__state == 8482) [L124] COND TRUE s__state == 8464 [L270] s__shutdown = 0 [L271] ret = __VERIFIER_nondet_int() [L272] COND TRUE blastFlag == 0 [L273] blastFlag = 1 [L275] COND FALSE !(ret <= 0) [L278] got_new_session = 1 [L279] s__state = 8496 [L280] s__init_num = 0 [L599] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L600] COND FALSE !(! s__s3__tmp__reuse_message) [L631] skip = 0 [L97] COND TRUE 1 [L99] state = s__state [L100] COND FALSE !(s__state == 12292) [L103] COND FALSE !(s__state == 16384) [L106] COND FALSE !(s__state == 8192) [L109] COND FALSE !(s__state == 24576) [L112] COND FALSE !(s__state == 8195) [L115] COND FALSE !(s__state == 8480) [L118] COND FALSE !(s__state == 8481) [L121] COND FALSE !(s__state == 8482) [L124] COND FALSE !(s__state == 8464) [L127] COND FALSE !(s__state == 8465) [L130] COND FALSE !(s__state == 8466) [L133] COND TRUE s__state == 8496 [L284] ret = __VERIFIER_nondet_int() [L285] COND TRUE blastFlag == 1 [L286] blastFlag = 2 [L288] COND FALSE !(ret <= 0) [L291] COND FALSE !(\read(s__hit)) [L294] s__state = 8512 [L296] s__init_num = 0 [L599] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L600] COND FALSE !(! s__s3__tmp__reuse_message) [L631] skip = 0 [L97] COND TRUE 1 [L99] state = s__state [L100] COND FALSE !(s__state == 12292) [L103] COND FALSE !(s__state == 16384) [L106] COND FALSE !(s__state == 8192) [L109] COND FALSE !(s__state == 24576) [L112] COND FALSE !(s__state == 8195) [L115] COND FALSE !(s__state == 8480) [L118] COND FALSE !(s__state == 8481) [L121] COND FALSE !(s__state == 8482) [L124] COND FALSE !(s__state == 8464) [L127] COND FALSE !(s__state == 8465) [L130] COND FALSE !(s__state == 8466) [L133] COND FALSE !(s__state == 8496) [L136] COND FALSE !(s__state == 8497) [L139] COND TRUE s__state == 8512 [L301] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L302] __cil_tmp56 = (unsigned long )s__s3__tmp__new_cipher__algorithms [L303] COND TRUE __cil_tmp56 + 256UL [L304] skip = 1 [L315] s__state = 8528 [L316] s__init_num = 0 [L599] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L600] COND FALSE !(! s__s3__tmp__reuse_message) [L631] skip = 0 [L97] COND TRUE 1 [L99] state = s__state [L100] COND FALSE !(s__state == 12292) [L103] COND FALSE !(s__state == 16384) [L106] COND FALSE !(s__state == 8192) [L109] COND FALSE !(s__state == 24576) [L112] COND FALSE !(s__state == 8195) [L115] COND FALSE !(s__state == 8480) [L118] COND FALSE !(s__state == 8481) [L121] COND FALSE !(s__state == 8482) [L124] COND FALSE !(s__state == 8464) [L127] COND FALSE !(s__state == 8465) [L130] COND FALSE !(s__state == 8466) [L133] COND FALSE !(s__state == 8496) [L136] COND FALSE !(s__state == 8497) [L139] COND FALSE !(s__state == 8512) [L142] COND FALSE !(s__state == 8513) [L145] COND TRUE s__state == 8528 [L320] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L321] l = (unsigned long )s__s3__tmp__new_cipher__algorithms [L323] __cil_tmp57 = (unsigned long )s__options [L324] COND TRUE __cil_tmp57 + 2097152UL [L325] s__s3__tmp__use_rsa_tmp = 1 [L330] COND TRUE \read(s__s3__tmp__use_rsa_tmp) [L357] ret = __VERIFIER_nondet_int() [L358] COND FALSE !(blastFlag == 6) [L361] COND FALSE !(ret <= 0) [L378] s__state = 8544 [L379] s__init_num = 0 [L599] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L600] COND TRUE ! s__s3__tmp__reuse_message [L601] COND TRUE ! skip [L602] COND TRUE state == 8528 [L603] COND TRUE s__state == 8544 [L604] COND TRUE tmp___7 != 1024 [L605] COND TRUE tmp___7 != 512 [L606] COND TRUE __cil_tmp58 != 4294967294 [L607] COND TRUE l != 4294967266 [L642] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 440 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 12.5s, OverallIterations: 16, TraceHistogramMax: 4, AutomataDifference: 7.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 8226 SDtfs, 6707 SDslu, 8930 SDs, 0 SdLazy, 2374 SolverSat, 495 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 104 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1849occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.3s AutomataMinimizationTime, 15 MinimizatonAttempts, 6174 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...