/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_1.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 16:33:20,495 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 16:33:20,500 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 16:33:20,546 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-09-04 16:33:20,579 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 16:33:20,582 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 16:33:20,586 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 16:33:20,588 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 16:33:20,590 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 16:33:20,592 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 16:33:20,594 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 16:33:20,605 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 16:33:20,608 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 16:33:20,610 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 16:33:20,611 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 16:33:20,612 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 16:33:20,617 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 16:33:20,629 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 16:33:20,630 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 16:33:20,631 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 16:33:20,633 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 16:33:20,654 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 16:33:20,655 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 16:33:20,657 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 16:33:20,658 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 16:33:20,658 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 16:33:20,658 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 16:33:20,658 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 16:33:20,659 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 16:33:20,659 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 16:33:20,660 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 16:33:20,661 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 16:33:20,661 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 16:33:20,661 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 16:33:20,662 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 16:33:20,662 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 16:33:20,662 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 16:33:20,662 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 16:33:20,663 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 16:33:20,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 16:33:20,663 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 16:33:20,663 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 16:33:20,664 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 16:33:20,664 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 16:33:21,131 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 16:33:21,150 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 16:33:21,155 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 16:33:21,157 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 16:33:21,158 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 16:33:21,159 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_1.cil-1.c [2020-09-04 16:33:21,262 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/392da8b61/6aeb681f88604c15abb2a7099c5a2a74/FLAG50026e4c6 [2020-09-04 16:33:21,962 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 16:33:21,963 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_1.cil-1.c [2020-09-04 16:33:21,978 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/392da8b61/6aeb681f88604c15abb2a7099c5a2a74/FLAG50026e4c6 [2020-09-04 16:33:22,357 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/392da8b61/6aeb681f88604c15abb2a7099c5a2a74 [2020-09-04 16:33:22,373 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 16:33:22,376 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 16:33:22,378 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 16:33:22,378 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 16:33:22,383 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 16:33:22,384 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:33:22" (1/1) ... [2020-09-04 16:33:22,388 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3baf0e4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:33:22, skipping insertion in model container [2020-09-04 16:33:22,388 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:33:22" (1/1) ... [2020-09-04 16:33:22,398 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 16:33:22,466 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 16:33:22,837 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:33:22,844 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 16:33:23,027 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:33:23,047 INFO L208 MainTranslator]: Completed translation [2020-09-04 16:33:23,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:33:23 WrapperNode [2020-09-04 16:33:23,048 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 16:33:23,049 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 16:33:23,050 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 16:33:23,050 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 16:33:23,069 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:33:23" (1/1) ... [2020-09-04 16:33:23,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:33:23" (1/1) ... [2020-09-04 16:33:23,080 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:33:23" (1/1) ... [2020-09-04 16:33:23,080 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:33:23" (1/1) ... [2020-09-04 16:33:23,094 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:33:23" (1/1) ... [2020-09-04 16:33:23,110 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:33:23" (1/1) ... [2020-09-04 16:33:23,114 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:33:23" (1/1) ... [2020-09-04 16:33:23,120 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 16:33:23,121 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 16:33:23,121 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 16:33:23,121 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 16:33:23,123 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:33:23" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 16:33:23,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 16:33:23,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 16:33:23,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-09-04 16:33:23,219 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 16:33:23,219 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 16:33:23,219 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-04 16:33:23,220 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 16:33:23,220 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-09-04 16:33:23,220 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-09-04 16:33:23,220 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 16:33:23,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 16:33:23,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 16:33:23,487 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-04 16:33:24,284 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-09-04 16:33:24,285 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-09-04 16:33:24,319 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 16:33:24,319 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-04 16:33:24,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:33:24 BoogieIcfgContainer [2020-09-04 16:33:24,337 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 16:33:24,340 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 16:33:24,341 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 16:33:24,345 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 16:33:24,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 04:33:22" (1/3) ... [2020-09-04 16:33:24,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64527195 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:33:24, skipping insertion in model container [2020-09-04 16:33:24,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:33:23" (2/3) ... [2020-09-04 16:33:24,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64527195 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:33:24, skipping insertion in model container [2020-09-04 16:33:24,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:33:24" (3/3) ... [2020-09-04 16:33:24,355 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_1.cil-1.c [2020-09-04 16:33:24,369 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 16:33:24,387 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 16:33:24,411 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 16:33:24,444 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 16:33:24,444 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 16:33:24,444 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 16:33:24,445 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 16:33:24,445 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 16:33:24,445 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 16:33:24,445 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 16:33:24,445 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 16:33:24,471 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states. [2020-09-04 16:33:24,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-04 16:33:24,500 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:24,502 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] [2020-09-04 16:33:24,503 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:24,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:24,510 INFO L82 PathProgramCache]: Analyzing trace with hash 42998903, now seen corresponding path program 1 times [2020-09-04 16:33:24,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:24,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2044320100] [2020-09-04 16:33:24,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:24,601 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:24,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:25,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:25,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:25,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:33:25,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2044320100] [2020-09-04 16:33:25,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:25,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 16:33:25,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252367928] [2020-09-04 16:33:25,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 16:33:25,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:25,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 16:33:25,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-04 16:33:25,298 INFO L87 Difference]: Start difference. First operand 416 states. Second operand 6 states. [2020-09-04 16:33:25,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:25,983 INFO L93 Difference]: Finished difference Result 738 states and 951 transitions. [2020-09-04 16:33:25,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 16:33:25,986 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 169 [2020-09-04 16:33:25,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:26,034 INFO L225 Difference]: With dead ends: 738 [2020-09-04 16:33:26,035 INFO L226 Difference]: Without dead ends: 413 [2020-09-04 16:33:26,049 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-04 16:33:26,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2020-09-04 16:33:26,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 402. [2020-09-04 16:33:26,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 402 states. [2020-09-04 16:33:26,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 476 transitions. [2020-09-04 16:33:26,210 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 476 transitions. Word has length 169 [2020-09-04 16:33:26,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:26,212 INFO L479 AbstractCegarLoop]: Abstraction has 402 states and 476 transitions. [2020-09-04 16:33:26,212 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 16:33:26,212 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 476 transitions. [2020-09-04 16:33:26,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-04 16:33:26,217 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:26,218 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:33:26,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 16:33:26,219 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:26,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:26,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1881331938, now seen corresponding path program 1 times [2020-09-04 16:33:26,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:26,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [751930273] [2020-09-04 16:33:26,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:26,267 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:26,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:26,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:26,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:26,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:33:26,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [751930273] [2020-09-04 16:33:26,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:26,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 16:33:26,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077395429] [2020-09-04 16:33:26,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 16:33:26,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:26,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 16:33:26,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:33:26,496 INFO L87 Difference]: Start difference. First operand 402 states and 476 transitions. Second operand 3 states. [2020-09-04 16:33:26,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:26,593 INFO L93 Difference]: Finished difference Result 689 states and 834 transitions. [2020-09-04 16:33:26,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 16:33:26,595 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 191 [2020-09-04 16:33:26,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:26,600 INFO L225 Difference]: With dead ends: 689 [2020-09-04 16:33:26,600 INFO L226 Difference]: Without dead ends: 418 [2020-09-04 16:33:26,604 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 [2020-09-04 16:33:26,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2020-09-04 16:33:26,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 418. [2020-09-04 16:33:26,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-09-04 16:33:26,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 492 transitions. [2020-09-04 16:33:26,681 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 492 transitions. Word has length 191 [2020-09-04 16:33:26,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:26,683 INFO L479 AbstractCegarLoop]: Abstraction has 418 states and 492 transitions. [2020-09-04 16:33:26,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 16:33:26,683 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 492 transitions. [2020-09-04 16:33:26,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-09-04 16:33:26,688 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:26,689 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:33:26,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 16:33:26,690 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:26,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:26,691 INFO L82 PathProgramCache]: Analyzing trace with hash 572919500, now seen corresponding path program 1 times [2020-09-04 16:33:26,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:26,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1232291975] [2020-09-04 16:33:26,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:26,703 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:26,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:26,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:26,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:26,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:33:26,856 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1232291975] [2020-09-04 16:33:26,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:26,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 16:33:26,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024029941] [2020-09-04 16:33:26,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 16:33:26,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:26,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 16:33:26,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:33:26,859 INFO L87 Difference]: Start difference. First operand 418 states and 492 transitions. Second operand 3 states. [2020-09-04 16:33:27,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:27,177 INFO L93 Difference]: Finished difference Result 724 states and 887 transitions. [2020-09-04 16:33:27,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 16:33:27,178 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 192 [2020-09-04 16:33:27,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:27,182 INFO L225 Difference]: With dead ends: 724 [2020-09-04 16:33:27,183 INFO L226 Difference]: Without dead ends: 453 [2020-09-04 16:33:27,184 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 [2020-09-04 16:33:27,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2020-09-04 16:33:27,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 442. [2020-09-04 16:33:27,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2020-09-04 16:33:27,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 521 transitions. [2020-09-04 16:33:27,241 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 521 transitions. Word has length 192 [2020-09-04 16:33:27,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:27,242 INFO L479 AbstractCegarLoop]: Abstraction has 442 states and 521 transitions. [2020-09-04 16:33:27,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 16:33:27,243 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 521 transitions. [2020-09-04 16:33:27,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-04 16:33:27,249 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:27,249 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:33:27,250 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 16:33:27,250 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:27,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:27,251 INFO L82 PathProgramCache]: Analyzing trace with hash -442840212, now seen corresponding path program 1 times [2020-09-04 16:33:27,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:27,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2068499310] [2020-09-04 16:33:27,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:27,270 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:27,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:27,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:27,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:27,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:33:27,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2068499310] [2020-09-04 16:33:27,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:27,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 16:33:27,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612688462] [2020-09-04 16:33:27,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 16:33:27,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:27,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 16:33:27,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:33:27,503 INFO L87 Difference]: Start difference. First operand 442 states and 521 transitions. Second operand 3 states. [2020-09-04 16:33:27,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:27,693 INFO L93 Difference]: Finished difference Result 1025 states and 1255 transitions. [2020-09-04 16:33:27,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 16:33:27,695 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 199 [2020-09-04 16:33:27,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:27,702 INFO L225 Difference]: With dead ends: 1025 [2020-09-04 16:33:27,702 INFO L226 Difference]: Without dead ends: 730 [2020-09-04 16:33:27,706 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 [2020-09-04 16:33:27,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2020-09-04 16:33:27,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 730. [2020-09-04 16:33:27,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 730 states. [2020-09-04 16:33:27,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 881 transitions. [2020-09-04 16:33:27,830 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 881 transitions. Word has length 199 [2020-09-04 16:33:27,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:27,832 INFO L479 AbstractCegarLoop]: Abstraction has 730 states and 881 transitions. [2020-09-04 16:33:27,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 16:33:27,832 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 881 transitions. [2020-09-04 16:33:27,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-09-04 16:33:27,837 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:27,838 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:33:27,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 16:33:27,839 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:27,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:27,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1902289806, now seen corresponding path program 1 times [2020-09-04 16:33:27,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:27,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [713968162] [2020-09-04 16:33:27,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:27,855 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:27,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:27,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:27,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:28,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:33:28,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [713968162] [2020-09-04 16:33:28,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:28,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 16:33:28,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245180805] [2020-09-04 16:33:28,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 16:33:28,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:28,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 16:33:28,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:33:28,034 INFO L87 Difference]: Start difference. First operand 730 states and 881 transitions. Second operand 3 states. [2020-09-04 16:33:28,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:28,473 INFO L93 Difference]: Finished difference Result 1430 states and 1801 transitions. [2020-09-04 16:33:28,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 16:33:28,474 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 217 [2020-09-04 16:33:28,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:28,480 INFO L225 Difference]: With dead ends: 1430 [2020-09-04 16:33:28,480 INFO L226 Difference]: Without dead ends: 847 [2020-09-04 16:33:28,483 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 [2020-09-04 16:33:28,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2020-09-04 16:33:28,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 820. [2020-09-04 16:33:28,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 820 states. [2020-09-04 16:33:28,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 981 transitions. [2020-09-04 16:33:28,566 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 981 transitions. Word has length 217 [2020-09-04 16:33:28,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:28,567 INFO L479 AbstractCegarLoop]: Abstraction has 820 states and 981 transitions. [2020-09-04 16:33:28,567 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 16:33:28,568 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 981 transitions. [2020-09-04 16:33:28,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-09-04 16:33:28,572 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:28,573 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:33:28,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 16:33:28,573 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:28,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:28,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1839961070, now seen corresponding path program 1 times [2020-09-04 16:33:28,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:28,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1869506548] [2020-09-04 16:33:28,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:28,594 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:28,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:28,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:28,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:28,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:33:28,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1869506548] [2020-09-04 16:33:28,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:28,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 16:33:28,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023488923] [2020-09-04 16:33:28,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 16:33:28,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:28,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 16:33:28,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:33:28,733 INFO L87 Difference]: Start difference. First operand 820 states and 981 transitions. Second operand 3 states. [2020-09-04 16:33:29,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:29,122 INFO L93 Difference]: Finished difference Result 1565 states and 1923 transitions. [2020-09-04 16:33:29,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 16:33:29,123 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 217 [2020-09-04 16:33:29,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:29,131 INFO L225 Difference]: With dead ends: 1565 [2020-09-04 16:33:29,135 INFO L226 Difference]: Without dead ends: 892 [2020-09-04 16:33:29,141 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 [2020-09-04 16:33:29,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2020-09-04 16:33:29,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 872. [2020-09-04 16:33:29,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 872 states. [2020-09-04 16:33:29,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1043 transitions. [2020-09-04 16:33:29,259 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1043 transitions. Word has length 217 [2020-09-04 16:33:29,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:29,260 INFO L479 AbstractCegarLoop]: Abstraction has 872 states and 1043 transitions. [2020-09-04 16:33:29,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 16:33:29,261 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1043 transitions. [2020-09-04 16:33:29,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-09-04 16:33:29,268 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:29,268 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-04 16:33:29,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 16:33:29,269 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:29,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:29,270 INFO L82 PathProgramCache]: Analyzing trace with hash 561231978, now seen corresponding path program 1 times [2020-09-04 16:33:29,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:29,272 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [956942021] [2020-09-04 16:33:29,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:29,285 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:29,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:29,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:29,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:29,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:33:29,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [956942021] [2020-09-04 16:33:29,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:29,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 16:33:29,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924756247] [2020-09-04 16:33:29,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 16:33:29,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:29,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 16:33:29,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:33:29,449 INFO L87 Difference]: Start difference. First operand 872 states and 1043 transitions. Second operand 3 states. [2020-09-04 16:33:29,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:29,654 INFO L93 Difference]: Finished difference Result 2236 states and 2701 transitions. [2020-09-04 16:33:29,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 16:33:29,655 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 224 [2020-09-04 16:33:29,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:29,667 INFO L225 Difference]: With dead ends: 2236 [2020-09-04 16:33:29,668 INFO L226 Difference]: Without dead ends: 1511 [2020-09-04 16:33:29,672 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 [2020-09-04 16:33:29,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1511 states. [2020-09-04 16:33:29,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1511 to 1509. [2020-09-04 16:33:29,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1509 states. [2020-09-04 16:33:29,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1509 states to 1509 states and 1798 transitions. [2020-09-04 16:33:29,868 INFO L78 Accepts]: Start accepts. Automaton has 1509 states and 1798 transitions. Word has length 224 [2020-09-04 16:33:29,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:29,869 INFO L479 AbstractCegarLoop]: Abstraction has 1509 states and 1798 transitions. [2020-09-04 16:33:29,869 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 16:33:29,870 INFO L276 IsEmpty]: Start isEmpty. Operand 1509 states and 1798 transitions. [2020-09-04 16:33:29,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-09-04 16:33:29,878 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:29,878 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:33:29,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-04 16:33:29,879 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:29,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:29,880 INFO L82 PathProgramCache]: Analyzing trace with hash -902826781, now seen corresponding path program 1 times [2020-09-04 16:33:29,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:29,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1404834607] [2020-09-04 16:33:29,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:29,899 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:29,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:30,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:30,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:30,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:33:30,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1404834607] [2020-09-04 16:33:30,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:30,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 16:33:30,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216777313] [2020-09-04 16:33:30,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 16:33:30,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:30,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 16:33:30,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:33:30,053 INFO L87 Difference]: Start difference. First operand 1509 states and 1798 transitions. Second operand 3 states. [2020-09-04 16:33:30,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:30,242 INFO L93 Difference]: Finished difference Result 2897 states and 3475 transitions. [2020-09-04 16:33:30,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 16:33:30,243 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 225 [2020-09-04 16:33:30,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:30,254 INFO L225 Difference]: With dead ends: 2897 [2020-09-04 16:33:30,254 INFO L226 Difference]: Without dead ends: 1535 [2020-09-04 16:33:30,261 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 [2020-09-04 16:33:30,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1535 states. [2020-09-04 16:33:30,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1535 to 1521. [2020-09-04 16:33:30,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1521 states. [2020-09-04 16:33:30,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1521 states to 1521 states and 1804 transitions. [2020-09-04 16:33:30,420 INFO L78 Accepts]: Start accepts. Automaton has 1521 states and 1804 transitions. Word has length 225 [2020-09-04 16:33:30,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:30,421 INFO L479 AbstractCegarLoop]: Abstraction has 1521 states and 1804 transitions. [2020-09-04 16:33:30,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 16:33:30,422 INFO L276 IsEmpty]: Start isEmpty. Operand 1521 states and 1804 transitions. [2020-09-04 16:33:30,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-09-04 16:33:30,431 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:30,431 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] [2020-09-04 16:33:30,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-04 16:33:30,432 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:30,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:30,433 INFO L82 PathProgramCache]: Analyzing trace with hash -182509933, now seen corresponding path program 1 times [2020-09-04 16:33:30,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:30,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [645387332] [2020-09-04 16:33:30,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:30,443 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:30,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:30,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:30,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:30,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:33:30,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [645387332] [2020-09-04 16:33:30,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:30,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 16:33:30,595 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236120886] [2020-09-04 16:33:30,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 16:33:30,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:30,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 16:33:30,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:33:30,597 INFO L87 Difference]: Start difference. First operand 1521 states and 1804 transitions. Second operand 3 states. [2020-09-04 16:33:30,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:30,856 INFO L93 Difference]: Finished difference Result 4275 states and 5108 transitions. [2020-09-04 16:33:30,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 16:33:30,856 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 227 [2020-09-04 16:33:30,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:30,872 INFO L225 Difference]: With dead ends: 4275 [2020-09-04 16:33:30,872 INFO L226 Difference]: Without dead ends: 2901 [2020-09-04 16:33:30,880 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 [2020-09-04 16:33:30,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2901 states. [2020-09-04 16:33:31,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2901 to 2899. [2020-09-04 16:33:31,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2899 states. [2020-09-04 16:33:31,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2899 states to 2899 states and 3440 transitions. [2020-09-04 16:33:31,107 INFO L78 Accepts]: Start accepts. Automaton has 2899 states and 3440 transitions. Word has length 227 [2020-09-04 16:33:31,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:31,108 INFO L479 AbstractCegarLoop]: Abstraction has 2899 states and 3440 transitions. [2020-09-04 16:33:31,110 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 16:33:31,111 INFO L276 IsEmpty]: Start isEmpty. Operand 2899 states and 3440 transitions. [2020-09-04 16:33:31,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-09-04 16:33:31,124 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:31,124 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-04 16:33:31,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-04 16:33:31,125 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:31,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:31,125 INFO L82 PathProgramCache]: Analyzing trace with hash -331944198, now seen corresponding path program 1 times [2020-09-04 16:33:31,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:31,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [468688133] [2020-09-04 16:33:31,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:31,140 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:31,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:31,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:31,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:31,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:33:31,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [468688133] [2020-09-04 16:33:31,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:31,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 16:33:31,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659526667] [2020-09-04 16:33:31,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 16:33:31,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:31,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 16:33:31,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:33:31,312 INFO L87 Difference]: Start difference. First operand 2899 states and 3440 transitions. Second operand 3 states. [2020-09-04 16:33:31,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:31,691 INFO L93 Difference]: Finished difference Result 6983 states and 8335 transitions. [2020-09-04 16:33:31,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 16:33:31,692 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 228 [2020-09-04 16:33:31,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:31,720 INFO L225 Difference]: With dead ends: 6983 [2020-09-04 16:33:31,720 INFO L226 Difference]: Without dead ends: 4253 [2020-09-04 16:33:31,732 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 [2020-09-04 16:33:31,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4253 states. [2020-09-04 16:33:32,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4253 to 4253. [2020-09-04 16:33:32,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4253 states. [2020-09-04 16:33:32,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4253 states to 4253 states and 5058 transitions. [2020-09-04 16:33:32,077 INFO L78 Accepts]: Start accepts. Automaton has 4253 states and 5058 transitions. Word has length 228 [2020-09-04 16:33:32,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:32,078 INFO L479 AbstractCegarLoop]: Abstraction has 4253 states and 5058 transitions. [2020-09-04 16:33:32,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 16:33:32,078 INFO L276 IsEmpty]: Start isEmpty. Operand 4253 states and 5058 transitions. [2020-09-04 16:33:32,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-09-04 16:33:32,091 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:32,091 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:33:32,091 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-04 16:33:32,092 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:32,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:32,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1338604276, now seen corresponding path program 1 times [2020-09-04 16:33:32,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:32,093 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [46727902] [2020-09-04 16:33:32,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:32,101 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:32,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 16:33:32,134 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 16:33:32,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 16:33:32,161 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 16:33:32,267 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 16:33:32,267 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 16:33:32,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-04 16:33:32,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 04:33:32 BoogieIcfgContainer [2020-09-04 16:33:32,306 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 16:33:32,310 INFO L168 Benchmark]: Toolchain (without parser) took 9933.13 ms. Allocated memory was 141.6 MB in the beginning and 516.4 MB in the end (delta: 374.9 MB). Free memory was 101.2 MB in the beginning and 376.2 MB in the end (delta: -275.0 MB). Peak memory consumption was 99.9 MB. Max. memory is 7.1 GB. [2020-09-04 16:33:32,311 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 141.6 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 16:33:32,311 INFO L168 Benchmark]: CACSL2BoogieTranslator took 671.29 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 101.0 MB in the beginning and 179.1 MB in the end (delta: -78.1 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2020-09-04 16:33:32,312 INFO L168 Benchmark]: Boogie Preprocessor took 71.20 ms. Allocated memory is still 204.5 MB. Free memory was 179.1 MB in the beginning and 176.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-09-04 16:33:32,313 INFO L168 Benchmark]: RCFGBuilder took 1216.56 ms. Allocated memory is still 204.5 MB. Free memory was 176.5 MB in the beginning and 107.7 MB in the end (delta: 68.8 MB). Peak memory consumption was 68.8 MB. Max. memory is 7.1 GB. [2020-09-04 16:33:32,314 INFO L168 Benchmark]: TraceAbstraction took 7966.50 ms. Allocated memory was 204.5 MB in the beginning and 516.4 MB in the end (delta: 312.0 MB). Free memory was 107.1 MB in the beginning and 376.2 MB in the end (delta: -269.1 MB). Peak memory consumption was 42.8 MB. Max. memory is 7.1 GB. [2020-09-04 16:33:32,317 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 141.6 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 671.29 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 101.0 MB in the beginning and 179.1 MB in the end (delta: -78.1 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 71.20 ms. Allocated memory is still 204.5 MB. Free memory was 179.1 MB in the beginning and 176.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1216.56 ms. Allocated memory is still 204.5 MB. Free memory was 176.5 MB in the beginning and 107.7 MB in the end (delta: 68.8 MB). Peak memory consumption was 68.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7966.50 ms. Allocated memory was 204.5 MB in the beginning and 516.4 MB in the end (delta: 312.0 MB). Free memory was 107.1 MB in the beginning and 376.2 MB in the end (delta: -269.1 MB). Peak memory consumption was 42.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 611]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L616] int s ; [L617] int tmp ; [L621] s = 8464 [L622] 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 = __VERIFIER_nondet_int() ; [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 = __VERIFIER_nondet_int() ; [L38] int s__s3__tmp__next_state___0 ; [L39] int s__s3__tmp__new_cipher__algo_strength = __VERIFIER_nondet_int() ; [L40] int s__session__cipher ; [L41] int buf = __VERIFIER_nondet_int() ; [L42] unsigned long l ; [L43] unsigned long Time ; [L44] unsigned long tmp = __VERIFIER_nondet_long() ; [L45] int cb ; [L46] long num1 ; [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 ; [L55] int tmp___4 ; [L56] int tmp___5 ; [L57] int tmp___6 ; [L58] int tmp___7 ; [L59] long tmp___8 = __VERIFIER_nondet_long() ; [L60] int tmp___9 ; [L61] int tmp___10 ; [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 ; [L73] s__state = initial_state [L74] blastFlag = 0 [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 [L268] s__shutdown = 0 [L269] ret = __VERIFIER_nondet_int() [L270] COND TRUE blastFlag == 0 [L271] blastFlag = 1 [L273] COND FALSE !(ret <= 0) [L276] got_new_session = 1 [L277] s__state = 8496 [L278] s__init_num = 0 [L583] COND FALSE !(! s__s3__tmp__reuse_message) [L600] 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 [L282] ret = __VERIFIER_nondet_int() [L283] COND TRUE blastFlag == 1 [L284] blastFlag = 2 [L286] COND FALSE !(ret <= 0) [L289] COND TRUE \read(s__hit) [L290] s__state = 8656 [L294] s__init_num = 0 [L583] COND FALSE !(! s__s3__tmp__reuse_message) [L600] 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 FALSE !(s__state == 8528) [L148] COND FALSE !(s__state == 8529) [L151] COND FALSE !(s__state == 8544) [L154] COND FALSE !(s__state == 8545) [L157] COND FALSE !(s__state == 8560) [L160] COND FALSE !(s__state == 8561) [L163] COND FALSE !(s__state == 8448) [L166] COND FALSE !(s__state == 8576) [L169] COND FALSE !(s__state == 8577) [L172] COND FALSE !(s__state == 8592) [L175] COND FALSE !(s__state == 8593) [L178] COND FALSE !(s__state == 8608) [L181] COND FALSE !(s__state == 8609) [L184] COND FALSE !(s__state == 8640) [L187] COND FALSE !(s__state == 8641) [L190] COND TRUE s__state == 8656 [L488] s__session__cipher = s__s3__tmp__new_cipher [L489] tmp___9 = __VERIFIER_nondet_int() [L490] COND FALSE !(! tmp___9) [L494] ret = __VERIFIER_nondet_int() [L495] COND TRUE blastFlag == 2 [L496] blastFlag = 3 [L498] COND FALSE !(ret <= 0) [L501] s__state = 8672 [L502] s__init_num = 0 [L503] tmp___10 = __VERIFIER_nondet_int() [L504] COND FALSE !(! tmp___10) [L583] COND FALSE !(! s__s3__tmp__reuse_message) [L600] 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 FALSE !(s__state == 8528) [L148] COND FALSE !(s__state == 8529) [L151] COND FALSE !(s__state == 8544) [L154] COND FALSE !(s__state == 8545) [L157] COND FALSE !(s__state == 8560) [L160] COND FALSE !(s__state == 8561) [L163] COND FALSE !(s__state == 8448) [L166] COND FALSE !(s__state == 8576) [L169] COND FALSE !(s__state == 8577) [L172] COND FALSE !(s__state == 8592) [L175] COND FALSE !(s__state == 8593) [L178] COND FALSE !(s__state == 8608) [L181] COND FALSE !(s__state == 8609) [L184] COND FALSE !(s__state == 8640) [L187] COND FALSE !(s__state == 8641) [L190] COND FALSE !(s__state == 8656) [L193] COND FALSE !(s__state == 8657) [L196] COND TRUE s__state == 8672 [L511] ret = __VERIFIER_nondet_int() [L512] COND FALSE !(blastFlag == 4) [L515] COND TRUE blastFlag == 3 [L611] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 416 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 7.8s, OverallIterations: 11, TraceHistogramMax: 4, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5167 SDtfs, 2473 SDslu, 4213 SDs, 0 SdLazy, 584 SolverSat, 88 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4253occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 10 MinimizatonAttempts, 87 StatesRemovedByMinimization, 7 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...